version-1.0

data/zutki_likes.sql

+-- MySQL dump 10.13  Distrib 8.0.12, for Win64 (x86_64)
+--
+-- Host: localhost    Database: zutki
+-- ------------------------------------------------------
+-- Server version	8.0.12
+
+/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
+/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
+/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
+ SET NAMES utf8 ;
+/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
+/*!40103 SET TIME_ZONE='+00:00' */;
+/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
+/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
+/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
+/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
+
+--
+-- Table structure for table `likes`
+--
+
+DROP TABLE IF EXISTS `likes`;
+/*!40101 SET @saved_cs_client     = @@character_set_client */;
+ SET character_set_client = utf8mb4 ;
+CREATE TABLE `likes` (
+  `lid` int(11) NOT NULL AUTO_INCREMENT COMMENT '喜欢id',
+  `uid` int(11) NOT NULL COMMENT '用户id',
+  `pid` int(11) NOT NULL COMMENT '论文id',
+  PRIMARY KEY (`lid`)
+) ENGINE=InnoDB AUTO_INCREMENT=50 DEFAULT CHARSET=utf8 COMMENT='喜欢项的表(推荐相关)';
+/*!40101 SET character_set_client = @saved_cs_client */;
+
+--
+-- Dumping data for table `likes`
+--
+
+LOCK TABLES `likes` WRITE;
+/*!40000 ALTER TABLE `likes` DISABLE KEYS */;
+INSERT INTO `likes` VALUES (1,2,1),(2,2,2),(3,1,2),(4,1,1),(18,1,3),(19,1,4),(20,1,7),(21,2,4),(22,2,6),(23,2,7),(24,3,3),(25,3,6),(26,3,1),(27,5,7),(28,5,2),(29,6,1),(30,6,3),(31,6,2),(32,5,1),(33,5,1),(34,5,1),(35,5,1),(36,1,1),(37,5,1),(38,5,2),(39,5,5),(40,5,8),(41,5,2),(42,1,2),(43,1,4),(44,1,4),(45,5,1),(46,4,2),(47,4,3),(48,4,7),(49,1,4);
+/*!40000 ALTER TABLE `likes` ENABLE KEYS */;
+UNLOCK TABLES;
+/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;
+
+/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
+/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
+/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
+/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
+/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
+/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
+/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
+
+-- Dump completed on 2019-06-21 13:44:00

data/zutki_papers.sql

+-- MySQL dump 10.13  Distrib 8.0.12, for Win64 (x86_64)
+--
+-- Host: localhost    Database: zutki
+-- ------------------------------------------------------
+-- Server version	8.0.12
+
+/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
+/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
+/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
+ SET NAMES utf8 ;
+/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
+/*!40103 SET TIME_ZONE='+00:00' */;
+/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
+/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
+/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
+/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
+
+--
+-- Table structure for table `papers`
+--
+
+DROP TABLE IF EXISTS `papers`;
+/*!40101 SET @saved_cs_client     = @@character_set_client */;
+ SET character_set_client = utf8mb4 ;
+CREATE TABLE `papers` (
+  `pid` int(11) NOT NULL AUTO_INCREMENT,
+  `author` varchar(500) DEFAULT 'unknown' COMMENT '作者',
+  `place` varchar(500) DEFAULT 'unknown' COMMENT '发表机构',
+  `title` varchar(500) DEFAULT 'unknown' COMMENT '论文题目',
+  `digest` varchar(1000) DEFAULT 'unknown' COMMENT '摘要',
+  `source` varchar(100) DEFAULT 'unknown' COMMENT '来源',
+  `likeCnt` int(11) DEFAULT '0' COMMENT '喜欢该论文人数',
+  `downCnt` int(11) DEFAULT '0' COMMENT '该论文下载人数',
+  `date` date DEFAULT NULL COMMENT '发表日期',
+  PRIMARY KEY (`pid`)
+) ENGINE=InnoDB AUTO_INCREMENT=9 DEFAULT CHARSET=utf8 COMMENT='论文表';
+/*!40101 SET character_set_client = @saved_cs_client */;
+
+--
+-- Dumping data for table `papers`
+--
+
+LOCK TABLES `papers` WRITE;
+/*!40000 ALTER TABLE `papers` DISABLE KEYS */;
+INSERT INTO `papers` VALUES (1,'Truong Khang Nguyen;','unknown','Investigation of a computer CPU','Abstract(#br)In the present study, the thermal performance of an air-cooled, flat-plate heat sink in forced convection was performed using a three-dimension','Elsevierjournal',61,153,'2019-05-04'),(2,'络首发	陈林林; 韩可; 李伟; 吴嘉树; 辛嘉英','unknown','铬天青S法结合高效液相色谱法测定甲烷氧化菌素含量 网络首发','unknown','食品工业科技',29,12,'2019-03-07'),(3,'薛硕;董曼;张璐璐;尹凯静;王琳','unknown','β-环糊精与香芹酮形成常数的测定及其包合物的制备及表征 网络首发','unknown','食品与发酵工业',0,0,'2019-02-11'),(4,'	Investigation of a computer CPU heat sink under laminar forced convection using a structural ','unknown','	Investigation of a computer CPU heat sink under laminar forced convection using a structural ','unknown','International Journal of Heat and Mass ',3,0,'2019-05-04'),(5,'何玲， 黎加厚','unknown','促进学生深度学习','正深度学习的提出早在20 世纪50 年代中期, 在瑞典工作的两位美国学者FerenceMarton ','计算机教与学. 现代教学',25,41,'2019-05-04'),(6,'	马湧; 王晓鹏; 马莎莎','unknown','	基于Keras深度学习框架下BP神经网络的热轧带钢力学性能预测','unknown','	冶金自动化',12,31,'2019-05-04'),(7,'	齐孟雷','unknown','基于云班课的《数控加工技术》混合式学习研究','unknown','	山东工业技术',0,0,'2019-03-08'),(8,'滕爱杰','unknown','	基于微信的混合式学习模式在独立院校英语教学中的应','unknown','	黑龙江教育学院学报	',23,13,'2019-03-08');
+/*!40000 ALTER TABLE `papers` ENABLE KEYS */;
+UNLOCK TABLES;
+/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;
+
+/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
+/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
+/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
+/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
+/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
+/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
+/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
+
+-- Dump completed on 2019-06-21 13:43:59

data/zutki_users.sql

+-- MySQL dump 10.13  Distrib 8.0.12, for Win64 (x86_64)
+--
+-- Host: localhost    Database: zutki
+-- ------------------------------------------------------
+-- Server version	8.0.12
+
+/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
+/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
+/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
+ SET NAMES utf8 ;
+/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
+/*!40103 SET TIME_ZONE='+00:00' */;
+/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
+/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
+/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
+/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
+
+--
+-- Table structure for table `users`
+--
+
+DROP TABLE IF EXISTS `users`;
+/*!40101 SET @saved_cs_client     = @@character_set_client */;
+ SET character_set_client = utf8mb4 ;
+CREATE TABLE `users` (
+  `uid` int(11) NOT NULL AUTO_INCREMENT COMMENT '用户id',
+  `username` varchar(20) NOT NULL COMMENT '用户名',
+  `password` varchar(20) NOT NULL COMMENT '密码',
+  `major` varchar(20) DEFAULT NULL COMMENT '专业',
+  `email` varchar(20) DEFAULT NULL COMMENT '邮箱',
+  PRIMARY KEY (`uid`)
+) ENGINE=InnoDB AUTO_INCREMENT=8 DEFAULT CHARSET=utf8 COMMENT='用户表';
+/*!40101 SET character_set_client = @saved_cs_client */;
+
+--
+-- Dumping data for table `users`
+--
+
+LOCK TABLES `users` WRITE;
+/*!40000 ALTER TABLE `users` DISABLE KEYS */;
+INSERT INTO `users` VALUES (1,'1','123',NULL,NULL),(2,'57820','5705',NULL,NULL),(3,'442','35','science','a15907120@qq.com'),(4,'2047','40570','science','41075@qq.com'),(5,'ss','123','economics','ss@qq'),(6,'aa','123','economics','ss@qq'),(7,'15465','56465','economics','156@qq');
+/*!40000 ALTER TABLE `users` ENABLE KEYS */;
+UNLOCK TABLES;
+/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;
+
+/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
+/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
+/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
+/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
+/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
+/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
+/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
+
+-- Dump completed on 2019-06-21 13:43:59

src/dao/LikeDao.java

+package dao;
+
+import entity.Like;
+import util.BaseDao;
+
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.Statement;
+import java.util.ArrayList;
+import java.util.Vector;
+
+public class LikeDao {
+    public ArrayList<Like> findLikesByUser(int uid){
+        ArrayList<Like> result = null;
+        Connection con=null;
+        ResultSet rs=null;
+        Statement st=null;
+
+        try {
+            String sql="SELECT * FROM zutki.likes where uid = "+uid+";";
+            System.out.println(sql);
+            con= BaseDao.getConnection();
+            st=con.createStatement();
+            result = new ArrayList<Like>();
+            rs = st.executeQuery(sql);
+
+            while(rs.next()){
+                Like like = new Like();
+                like.setLid(rs.getInt("lid"));
+                like.setPid(rs.getInt("pid"));
+                like.setUid(rs.getInt("uid"));
+
+                result.add(like);
+            }
+
+        }catch(Exception e) {
+            e.printStackTrace();
+        }finally{
+            BaseDao.closeAll(rs, st, con);
+        }
+        return result;
+    }
+
+    public static void addLike(int uid, int pid){
+        Vector<Like> result = null;
+        Connection con=null;
+        ResultSet rs=null;
+        Statement st=null;
+
+        try {
+            String sql="INSERT INTO `zutki`.`likes` (`uid`, `pid`) VALUES ('"+uid+"', '"+pid+"');";
+            System.out.println(sql);
+            con= BaseDao.getConnection();
+            st=con.createStatement();
+            st.execute(sql);
+        }catch(Exception e) {
+            e.printStackTrace();
+        }finally{
+            BaseDao.closeAll(rs, st, con);
+        }
+    }
+}

src/dao/PaperDao.java

+package dao;
+
+import entity.Like;
+import entity.Paper;
+import util.BaseDao;
+
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.Statement;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Vector;
+
+public class PaperDao {
+    public Paper findPaperById(int pid){
+        Connection con=null;
+        ResultSet rs=null;
+        Statement st=null;
+
+        Paper paper = new Paper();
+        try {
+            String sql="SELECT * FROM zutki.papers where pid = "+pid+";";
+            System.out.println(sql);
+            con= BaseDao.getConnection();
+            st=con.createStatement();
+            rs = st.executeQuery(sql);
+
+            if (rs.next()){
+                paper.setPid(rs.getInt("pid"));
+                paper.setAuthor(rs.getString("author"));
+                paper.setCnt(rs.getInt("downCnt"));
+                paper.setDate(rs.getDate("date"));
+                paper.setDigest(rs.getString("digest"));
+                paper.setPlace(rs.getString("place"));
+                paper.setSource(rs.getString("source"));
+                paper.setTitle(rs.getString("title"));
+            }
+        }catch(Exception e) {
+            e.printStackTrace();
+        }finally{
+            BaseDao.closeAll(rs, st, con);
+        }
+        return paper;
+    }
+
+    public ArrayList<Paper> findTopNPapers(ArrayList<Paper> papers){
+        //将喜欢人数最多的论文补入推荐列表, 直至满五篇(考虑重复)
+        Connection con=null;
+        ResultSet rs=null;
+        Statement st=null;
+
+        try {
+            String sql = "SELECT * FROM zutki.papers order by likeCnt desc;";
+            System.out.println(sql);
+            con= BaseDao.getConnection();
+            st=con.createStatement();
+            rs = st.executeQuery(sql);
+
+            while(rs.next() && papers.size() < 5){
+                Paper paper = new Paper();
+                paper.setPid(rs.getInt("pid"));
+                paper.setAuthor(rs.getString("author"));
+                paper.setCnt(rs.getInt("downCnt"));
+                paper.setDate(rs.getDate("date"));
+                paper.setDigest(rs.getString("digest"));
+                paper.setPlace(rs.getString("place"));
+                paper.setSource(rs.getString("source"));
+                paper.setTitle(rs.getString("title"));
+
+                if(BaseDao.isExist(papers, paper.getPid()))
+                    papers.add(paper);
+            }
+        }catch(Exception e) {
+            e.printStackTrace();
+        }finally{
+            BaseDao.closeAll(rs, st, con);
+        }
+        return papers;
+    }
+
+    public ArrayList<Paper> SearchPapers(String classify, String search){
+        ArrayList<Paper> result = null;
+        Connection con=null;
+        ResultSet rs=null;
+        Statement st=null;
+
+        try {
+            String sql="select * from zutki.papers where "+classify+" like '%"+search+"%'";
+            System.out.println(sql);
+            con= BaseDao.getConnection();
+            st=con.createStatement();
+            result = new ArrayList<Paper>();
+            rs = st.executeQuery(sql);
+
+            while(rs.next()){
+                Paper paper = new Paper();
+                paper.setPid(rs.getInt("pid"));
+                paper.setAuthor(rs.getString("author"));
+                paper.setCnt(rs.getInt("downCnt"));
+                paper.setDate(rs.getDate("date"));
+                paper.setDigest(rs.getString("digest"));
+                paper.setPlace(rs.getString("place"));
+                paper.setSource(rs.getString("source"));
+                paper.setTitle(rs.getString("title"));
+
+                result.add(paper);
+            }
+
+        }catch(Exception e) {
+            e.printStackTrace();
+        }finally{
+            BaseDao.closeAll(rs, st, con);
+        }
+        return result;
+    }
+
+    public ArrayList<Paper> getAllPapers(){
+        ArrayList<Paper> result = null;
+        Connection con=null;
+        ResultSet rs=null;
+        Statement st=null;
+
+        try {
+            String sql = "SELECT * FROM zutki.papers;";
+            System.out.println(sql);
+            con= BaseDao.getConnection();
+            st=con.createStatement();
+            result = new ArrayList<Paper>();
+            rs = st.executeQuery(sql);
+
+            while(rs.next()){
+                Paper paper = new Paper();
+                paper.setPid(rs.getInt("pid"));
+                paper.setAuthor(rs.getString("author"));
+                paper.setCnt(rs.getInt("downCnt"));
+                paper.setDate(rs.getDate("date"));
+                paper.setDigest(rs.getString("digest"));
+                paper.setPlace(rs.getString("place"));
+                paper.setSource(rs.getString("source"));
+                paper.setTitle(rs.getString("title"));
+                result.add(paper);
+            }
+
+        }catch(Exception e) {
+            e.printStackTrace();
+        }finally{
+            BaseDao.closeAll(rs, st, con);
+        }
+        return result;
+    }
+
+    public void addLikeCnt(int pid){
+        Connection con=null;
+        ResultSet rs=null;
+        Statement st=null;
+
+        try {
+            String sql = "UPDATE `zutki`.`papers` SET `likeCnt` = likeCnt+'1' WHERE (`pid` = '"+pid+"');";
+            System.out.println(sql);
+            con= BaseDao.getConnection();
+            st=con.createStatement();
+            st.execute(sql);
+        }catch(Exception e) {
+            e.printStackTrace();
+        }finally{
+            BaseDao.closeAll(rs, st, con);
+        }
+    }
+}

src/dao/UserDao.java

+package dao;
+
+import entity.Paper;
+import entity.User;
+import util.BaseDao;
+
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.ArrayList;
+import java.util.Vector;
+
+public class UserDao {
+    public boolean userAdd(User user) {
+        //添加用户
+        int result=0;
+        Connection con=null;
+        ResultSet rt=null;
+        Statement st=null;
+
+        try {
+            String sql = "INSERT INTO `zutki`.`users` (`username`, `password`, `major`, `email`) VALUES ('"+user.getUsername()+"', '"+user.getPassword()+"'," +
+                    " '"+user.getMajor()+"', '"+user.getEmail()+"');\n";
+
+            System.out.println(sql);
+            con= BaseDao.getConnection();
+            st= con.createStatement();
+            result=st.executeUpdate(sql);
+
+        } catch (Exception e) {
+            e.printStackTrace();
+            return false;
+        }finally{
+            BaseDao.closeAll(rt, st, con);
+        }
+
+        if(result>=0)
+            return true;
+        else
+            return false;
+    }
+
+    public User findByName(String username) {
+        //通过用户名来查找该用户
+        Connection conn=null;
+        Statement st=null;
+        ResultSet rs=null;
+
+        try {
+            String sql="select * from zutki.users where username='"+username+"'";
+            conn=BaseDao.getConnection();
+            st=conn.createStatement();
+            rs=st.executeQuery(sql);
+            if (rs.next()){
+                User target = new User(rs.getInt("uid"), rs.getString("username"),
+                        rs.getString("password"), rs.getString("major"), rs.getString("email"));
+                return target;
+            }else {
+                return null;
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        finally {
+            BaseDao.closeAll(rs, st, conn);
+        }
+        return null;
+    }
+
+    public boolean isExist(String username){
+        //通过用户名查找该用户是否存在
+        Connection conn=null;
+        Statement st=null;
+        ResultSet rs=null;
+
+        try {
+            String sql = "select count(*) from users where uid = '"+username+"';";
+            System.out.println(sql);
+            conn = BaseDao.getConnection();
+            st = conn.createStatement();
+            rs = st.executeQuery(sql);
+
+            //如果找到该用户返回true
+            while (rs.next()){
+                if(rs.getBoolean(1))
+                    return true;
+                else
+                    return false;
+            }
+
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }finally {
+            BaseDao.closeAll(rs, st, conn);
+        }
+        return false;
+    }
+
+
+
+    public ArrayList<User> getAllUsers(){
+        ArrayList<User> result = null;
+        Connection con=null;
+        ResultSet rs=null;
+        Statement st=null;
+
+        try {
+            String sql = "SELECT * FROM zutki.users;";
+            System.out.println(sql);
+            con= BaseDao.getConnection();
+            st=con.createStatement();
+            result = new ArrayList<User>();
+            rs = st.executeQuery(sql);
+
+            while(rs.next()){
+                User user = new User();
+                user.setEmail(rs.getString("email"));
+                user.setMajor(rs.getString("major"));
+                user.setPassword(rs.getString("password"));
+                user.setUsername(rs.getString("username"));
+                user.setUid(rs.getInt("uid"));
+
+                result.add(user);
+            }
+
+        }catch(Exception e) {
+            e.printStackTrace();
+        }finally{
+            BaseDao.closeAll(rs, st, con);
+        }
+        return result;
+
+
+    }
+}

src/entity/Like.java

+package entity;
+
+public class Like {
+    int uid; //发起喜欢的用户
+    int pid; //被喜欢的文章
+    int lid; //该喜欢行为的id
+
+    public Like(int uid, int pid, int lid) {
+        this.uid = uid;
+        this.pid = pid;
+        this.lid = lid;
+    }
+
+    public Like(){
+
+    }
+
+    public int getUid() {
+        return uid;
+    }
+
+    public void setUid(int uid) {
+        this.uid = uid;
+    }
+
+    public int getPid() {
+        return pid;
+    }
+
+    public void setPid(int pid) {
+        this.pid = pid;
+    }
+
+    public int getLid() {
+        return lid;
+    }
+
+    public void setLid(int lid) {
+        this.lid = lid;
+    }
+
+    @Override
+    public String toString() {
+        return "Like{" +
+                "uid=" + uid +
+                ", pid=" + pid +
+                ", lid=" + lid +
+                '}';
+    }
+}

src/entity/Paper.java

+package entity;
+
+
+import java.util.Date;
+
+public class Paper {
+    int pid;        //论文id
+    String author;  //作者
+    Date date;      //发表日期
+    String place;   //发表机构
+    String title;   //论文题目
+    String digest;  //摘要
+    String source;  //论文来源
+    int cnt;        //喜欢该论文的用户数量
+    int downCnt;    //下载量
+    double w;       //相似度(只在推荐时调用)
+
+    public Paper() {
+    }
+
+    public Paper(int pid, String author, Date date, String place, String title, String digest, String source, int cnt, int downCnt) {
+        this.pid = pid;
+        this.author = author;
+        this.date = date;
+        this.place = place;
+        this.title = title;
+        this.digest = digest;
+        this.source = source;
+        this.cnt = cnt;
+        this.downCnt = downCnt;
+    }
+
+    public int getPid() {
+        return pid;
+    }
+
+    public void setPid(int pid) {
+        this.pid = pid;
+    }
+
+    public String getAuthor() {
+        return author;
+    }
+
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+    public Date getDate() {
+        return date;
+    }
+
+    public void setDate(Date date) {
+        this.date = date;
+    }
+
+    public String getPlace() {
+        return place;
+    }
+
+    public void setPlace(String place) {
+        this.place = place;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getDigest() {
+        return digest;
+    }
+
+    public void setDigest(String digest) {
+        this.digest = digest;
+    }
+
+    public String getSource() {
+        return source;
+    }
+
+    public void setSource(String source) {
+        this.source = source;
+    }
+
+    public int getCnt() {
+        return cnt;
+    }
+
+    public void setCnt(int cnt) {
+        this.cnt = cnt;
+    }
+
+    public int getDownCnt() {
+        return downCnt;
+    }
+
+    public void setDownCnt(int downCnt) {
+        this.downCnt = downCnt;
+    }
+
+    public double getW() {
+        return w;
+    }
+
+    public void setW(double w) {
+        this.w = w;
+    }
+
+    @Override
+    public String toString() {
+        return "Paper{" +
+                "pid=" + pid +
+                ", author='" + author + '\'' +
+                ", date=" + date +
+                ", place='" + place + '\'' +
+                ", title='" + title + '\'' +
+                ", degest='" + digest + '\'' +
+                ", source='" + source + '\'' +
+                ", cnt=" + cnt +
+                ", downCnt=" + downCnt +
+                '}';
+    }
+}
+

src/entity/User.java

+package entity;
+
+public class User {
+    int uid;            //用户id
+    String username;    //用户名
+    String password;    //密码
+    String major;       //专业
+    String email;       //邮箱
+
+    public User() {
+    }
+
+    public User(int uid, String username, String password, String major, String email) {
+        this.uid = uid;
+        this.username = username;
+        this.password = password;
+        this.major = major;
+        this.email = email;
+    }
+
+    public User(String username, String password, String major, String email) {
+        this.username = username;
+        this.password = password;
+        this.major = major;
+        this.email = email;
+    }
+
+    public int getUid() {
+        return uid;
+    }
+
+    public void setUid(int uid) {
+        this.uid = uid;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getMajor() {
+        return major;
+    }
+
+    public void setMajor(String major) {
+        this.major = major;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    @Override
+    public String toString() {
+        return "User{" +
+                "uid=" + uid +
+                ", username='" + username + '\'' +
+                ", password='" + password + '\'' +
+                '}';
+    }
+}

src/servlet/IndexServlet.java

+package servlet;
+
+import dao.PaperDao;
+import entity.Paper;
+import entity.User;
+import util.ItemSimilarity;
+
+import javax.servlet.ServletException;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.*;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Vector;
+
+@WebServlet(name = "IndexServlet", urlPatterns = "/IndexServlet")
+public class IndexServlet extends HttpServlet {
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        doGet(request, response);
+    }
+
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        response.setContentType("text/html;charset=utf-8");
+
+        PaperDao dao = new PaperDao();
+        HttpSession session = request.getSession();
+        User user = (User) session.getAttribute("user");
+
+        //生成推荐
+        ArrayList<Paper> recomends = new ArrayList<>();
+
+        if(user!=null)
+            recomends = ItemSimilarity.recommend(user.getUid());
+        else
+            recomends = dao.findTopNPapers(recomends);
+
+        request.setAttribute("recomends", recomends);
+
+        System.out.println("推荐列表为: ");
+        for(Paper paper: recomends)
+            System.out.println("推荐题目为: "+paper.getTitle());
+
+        request.getRequestDispatcher("htmls/index.jsp").forward(request, response);
+    }
+}

src/servlet/LoginServlet.java

+package servlet;
+
+import dao.UserDao;
+import entity.User;
+
+import javax.servlet.ServletException;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.io.PrintWriter;
+
+@WebServlet(name = "LoginServlet", urlPatterns = "/LoginServlet")
+public class LoginServlet extends javax.servlet.http.HttpServlet {
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        response.setContentType("text/html;charset=utf-8");
+        String username = request.getParameter("username");
+        String password = request.getParameter("password");
+        UserDao dao = new UserDao();
+
+        //查看数据库中是否有该用户
+        User qUser = dao.findByName(username);
+        if(qUser==null){
+            request.setAttribute("status", "该用户不存在");
+            System.out.println("该用户不存在");
+        }else if(qUser.getPassword().equals(password)){
+            request.setAttribute("status", "登录成功, 等待跳转...");
+            System.out.println("登录成功, 等待跳转...");
+            request.getSession().setAttribute("user",qUser);
+        }else {
+            System.out.println("账号或密码输入错误");
+            request.setAttribute("status", "账号或密码输入错误");
+        }
+        response.sendRedirect("/zutki_war_exploded/IndexServlet");
+    }
+
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        doPost(request, response);
+    }
+}

src/servlet/LogoutServlet.java

+package servlet;
+
+import javax.servlet.ServletException;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+@WebServlet(name = "LogoutServlet", urlPatterns = "/LogoutServlet")
+public class LogoutServlet extends HttpServlet {
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        doGet(request, response);
+    }
+
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        request.getSession().removeAttribute("user");
+
+        response.sendRedirect("/zutki_war_exploded/IndexServlet");
+    }
+}

src/servlet/PaperServlet.java

+package servlet;
+
+import com.mysql.cj.Session;
+import dao.LikeDao;
+import dao.PaperDao;
+import entity.Paper;
+import entity.User;
+
+import javax.persistence.metamodel.SetAttribute;
+import javax.servlet.ServletException;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+import java.io.IOException;
+
+@WebServlet(name = "PaperServlet", urlPatterns = "/PaperServlet")
+public class PaperServlet extends HttpServlet {
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        doGet(request, response);
+    }
+
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        response.setContentType("text/html;charset=utf-8");
+        PaperDao dao = new PaperDao();
+
+        //展示论文信息
+        int pid = Integer.parseInt(request.getParameter("pid"));
+        Paper paper = dao.findPaperById(pid);
+        request.setAttribute("paper", paper);
+        request.getRequestDispatcher("htmls/paper.jsp").forward(request, response);
+
+        //添加一次喜欢
+        int lid = (Integer) request.getAttribute("lid");
+        dao.addLikeCnt(lid);
+
+        HttpSession session = request.getSession();
+        User user = (User) session.getAttribute("user");
+
+        System.out.println(user.toString() +" : " +lid);
+        LikeDao.addLike(user.getUid(), lid);
+    }
+}

src/servlet/RegistServlet.java

+package servlet;
+
+import dao.UserDao;
+import entity.User;
+
+import javax.servlet.ServletException;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+@WebServlet("/RegistServlet")
+public class RegistServlet extends HttpServlet {
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        response.setContentType("text/html;charset=utf-8");
+        UserDao dao = new UserDao();
+
+        String username = request.getParameter("username");
+        String password = request.getParameter("password");
+        String email = request.getParameter("email");
+        String major = request.getParameter("major");
+
+        if(dao.isExist(username)){
+            request.setAttribute("message", "该用户已存在!");
+        }else{
+            User user = new User(username, password, major, email);
+            dao.userAdd(user);
+            request.setAttribute("message", "注册成功!");
+        }
+
+        response.setHeader("refresh", "3;url=/zutki_war_exploded/index.html");   //3秒后跳转到主页
+    }
+
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        doPost(request, response);
+    }
+}

src/servlet/SearchServlet.java

+package servlet;
+
+import dao.PaperDao;
+import entity.Paper;
+
+import javax.servlet.ServletException;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.util.List;
+
+@WebServlet(name = "SearchServlet", urlPatterns = "/SearchServlet")
+public class SearchServlet extends HttpServlet {
+    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        doGet(request, response);
+    }
+
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        response.setContentType("text/html;charset=utf-8");
+        PaperDao dao = new PaperDao();
+
+        String classify = request.getParameter("classify");
+        String search = request.getParameter("search");
+
+        List<Paper> papers = dao.SearchPapers(classify, search);
+
+        System.out.println(papers.get(0).toString());
+        if(papers!=null){
+            Paper paper = papers.get(0);
+            request.setAttribute("title", paper.getTitle());
+            request.setAttribute("author", paper.getAuthor());
+            request.setAttribute("digest", paper.getDigest());
+            request.setAttribute("cnt", paper.getCnt());
+            request.setAttribute("date", paper.getDate());
+            request.setAttribute("downCnt", paper.getDownCnt());
+            request.setAttribute("place", paper.getPlace());
+            request.setAttribute("source", paper.getSource());
+        }else {
+            request.setAttribute("message", "找不到您输入的结果! 请重新查找");
+        }
+
+        request.setAttribute("papers", papers);
+        request.setAttribute("origin", search);
+        request.getRequestDispatcher("htmls/classify.jsp").forward(request, response);
+        return;
+    }
+}

src/util/BaseDao.java

+package util;
+
+import entity.Paper;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.Statement;
+import java.sql.ResultSet;
+import java.util.ArrayList;
+
+public class BaseDao {
+    private static final String  driver="com.mysql.cj.jdbc.Driver";
+    private static final String  url="jdbc:mysql://localhost:3306/zutki?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf8&useSSL=false";
+    private static final String  uid="root";
+    private static final String  pwd="123456";
+
+    Connection conn = null;
+    Statement prs = null;
+    ResultSet rs = null;
+
+    //建立连接
+    public static Connection getConnection(){
+        Connection con=null;
+        try {
+            Class.forName(driver);
+            con= DriverManager.getConnection(url,uid,pwd);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return con;
+    }
+
+    //关闭连接
+    public static void closeAll(ResultSet rs, Statement st, Connection con){
+        try {
+            if(rs!=null){
+                rs.close();
+                rs=null;
+            }
+            if(st!=null){
+                st.close();
+                st=null;
+            }
+            if(con!=null){
+                con.close();
+                con=null;
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    //判断该论文组中是否有该论文
+    public static boolean isExist(ArrayList<Paper> papers, int pid){
+        for (Paper paper : papers)
+            if(paper.getPid() == pid)
+                return false;
+        return true;
+    }
+}

src/util/ItemSimilarity.java

+package util;
+
+import dao.LikeDao;
+import dao.PaperDao;
+import dao.UserDao;
+import entity.Like;
+import entity.Paper;
+import entity.User;
+import java.util.*;
+
+public class ItemSimilarity {
+    public static void main(String[] args) {
+        //测试小Demo
+        System.out.println("请输入用户希望推荐的用户id : ");
+        Scanner input = new Scanner(System.in);
+        int uid = input.nextInt();
+        ArrayList<Paper> v = recommend(uid);
+
+        System.out.println("正在生成针对用户id为"+uid+"的推荐...");
+        for(int i = 0; i < v.size(); i++)
+            System.out.println("第"+(i+1)+"个推荐: 题目:"+v.get(i).getTitle()+"");
+    }
+
+    //通过计算余弦相似度并取TopN, 返回为uid的用户生成的5个推荐文章
+    public static ArrayList<Paper> recommend(int uid){
+        UserDao userdao = new UserDao();
+        PaperDao paperdao = new PaperDao();
+        LikeDao likedao = new LikeDao();
+
+        ArrayList<Like> likeLists;                                       //其他用户喜欢的论文列表
+
+        ArrayList<User> users = userdao.getAllUsers();                   //所有用户列表
+        ArrayList<Paper> papers = paperdao.getAllPapers();               //所有论文列表
+        int[][] curMatrix = new int[papers.size()+5][papers.size()+5];   //当前矩阵
+        int[][] comMatrix = new int[papers.size()+5][papers.size()+5];   //共现矩阵
+        int[] N = new int[papers.size()+5];                              //喜欢每个物品的人数
+
+        for(User user: users){
+            if(user.getUid()==uid) continue;                    //当前用户则跳过
+
+            likeLists = likedao.findLikesByUser(user.getUid()); //当前用户的喜欢列表
+
+            for(int i = 0; i < papers.size(); i++)
+                for(int j = 0; j < papers.size(); j++)
+                    curMatrix[i][j] = 0;                               //清空矩阵
+
+            for(int i = 0; i < likeLists.size(); i++){
+                int pid1 = likeLists.get(i).getPid();
+                ++N[pid1];
+                for(int j = i+1; j < likeLists.size(); j++){
+                    int pid2 = likeLists.get(j).getPid();
+                    ++curMatrix[pid1][pid2];
+                    ++curMatrix[pid2][pid1]; //两两加一
+                }
+            }
+            //累加所有矩阵, 得到共现矩阵
+            for(int i = 0; i < papers.size(); i++){
+                for(int j = 0; j < papers.size(); j++){
+                    int pid1 = papers.get(i).getPid(), pid2 = papers.get(j).getPid();
+                    comMatrix[pid1][pid2] += curMatrix[pid1][pid2];
+                    comMatrix[pid1][pid2] += curMatrix[pid1][pid2];
+                }
+            }
+        }
+
+
+        TreeSet<Paper> preList = new TreeSet<Paper>(new Comparator<Paper>() {
+            @Override
+            public int compare(Paper o1, Paper o2) {
+                if(o1.getW()!=o2.getW())
+                    return (int) (o1.getW()-o2.getW())*100;
+                else
+                    return o1.getCnt()-o2.getCnt();
+            }
+        }); //预处理的列表
+
+        likeLists = likedao.findLikesByUser(uid);       //当前用户喜欢的论文列表
+        boolean[] used = new boolean[papers.size()+5];  //判重数组
+        for(Like like: likeLists){
+            int Nij = 0;                         //既喜欢i又喜欢j的人数
+            double Wij;                          //相似度
+            Paper tmp;                           //当前的论文
+
+            int i = like.getPid();
+            for(Paper paper: papers){
+                if(like.getPid() == paper.getPid()) continue;
+                int j = paper.getPid();
+
+                Nij = comMatrix[i][j];
+                Wij = (double)Nij/Math.sqrt(N[i]*N[j]); //计算余弦相似度
+
+                tmp = paperdao.findPaperById(paper.getPid());
+                tmp.setW(Wij);
+
+                if(used[tmp.getPid()]) continue;
+                preList.add(tmp);
+                used[tmp.getPid()] = true;
+            }
+        }
+
+        ArrayList<Paper> recomLists = new ArrayList<>();      //生成的推荐结果
+        for(int i = 0; preList.size()>0 && i<5; i++){
+            recomLists.add(preList.pollLast());
+            preList.pollLast();
+        }
+        if(recomLists.size()<5){
+            //推荐数量不满5个, 补足喜欢数最高的文章
+            recomLists = paperdao.findTopNPapers(recomLists);
+        }
+
+        return recomLists;
+    }
+}
\ No newline at end of file

web/WEB-INF/web.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
+         version="4.0">
+    
+    
+    <welcome-file-list>
+        <welcome-file>IndexServlet</welcome-file>
+    </welcome-file-list>
+</web-app>
\ No newline at end of file

web/htmls/classify.jsp

+<%@ page import="entity.Paper" %>
+<%@ page import="java.util.ArrayList" %>
+<%@ page import="java.util.Vector" %>
+<%@ page language="java" contentType="text/html; charset=UTF-8"
+         pageEncoding="UTF-8" %>
+<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="utf-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <!-- 上述3个meta标签*必须*放在最前面，任何其他内容都*必须*跟随其后！ -->
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../favicon.ico">
+
+    <title>中工知网</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
+    <!-- Bootstrap theme -->
+    <link href="../../dist/css/bootstrap-theme.min.css" rel="stylesheet">
+    <!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
+    <link href="../../assets/css/ie10-viewport-bug-workaround.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="theme.css" rel="stylesheet">
+
+    <!-- Just for debugging purposes. Don't actually copy these 2 lines! -->
+    <!--[if lt IE 9]>
+    <script src="../../assets/js/ie8-responsive-file-warning.js"></script><![endif]-->
+    <script src="../../assets/js/ie-emulation-modes-warning.js"></script>
+
+    <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
+    <!--[if lt IE 9]>
+    <script src="https://cdn.bootcss.com/html5shiv/3.7.3/html5shiv.min.js"></script>
+    <script src="https://cdn.bootcss.com/respond.js/1.4.2/respond.min.js"></script>
+    <![endif]-->
+</head>
+
+<body>
+
+
+<!-- Fixed navbar -->
+<nav class="navbar navbar-inverse navbar-fixed-top">
+    <div class="container">
+        <div class="navbar-header">
+            <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar"
+                    aria-expanded="false" aria-controls="navbar">
+                <span class="sr-only">Toggle navigation</span>
+                <span class="icon-bar"></span>
+                <span class="icon-bar"></span>
+                <span class="icon-bar"></span>
+            </button>
+            <a class="navbar-brand" href="/zutki_war_exploded/IndexServlet">首页</a>
+        </div>
+        <div id="navbar" class="navbar-collapse collapse">
+            <ul class="nav navbar-nav">
+                <li><a href="#">经济</a></li>
+                <li><a href="#">信息</a></li>
+                <li><a href="#">医药</a></li>
+                <li><a href="#">社科</a></li>
+                <li><a href="#">理工</a></li>
+                <li><a href="#">工程</a></li>
+                <li><a href="#">高级检索</a></li>
+                <li><a href="/zutki_war_exploded/htmls/login.jsp">登陆</a></li>
+                <li><a href="/zutki_war_exploded/htmls/regist.jsp">注册</a></li>
+                <li><a href="/zutki_war_exploded/LogoutServlet">退出登陆</a></li>
+
+            </ul>
+            <div class="col-lg-6" style="width: 300px;">
+                <div class="input-group">
+                    <input type="text" class="form-control">
+                    <span class="input-group-btn">
+								<button class="btn btn-default" type="button">
+									Go!
+								</button>
+							</span>
+                </div><!-- /input-group -->
+            </div><!-- /.col-lg-6 -->
+        </div><!--/.nav-collapse -->
+    </div>
+</nav>
+
+<div class="container theme-showcase" role="main">
+
+    <!-- Main jumbotron for a primary marketing message or call to action -->
+    <div class="jumbotron">
+        <h1>欢迎来到中国知网</h1>
+        <p>在这里希望你能找到您想要的一切</p>
+    </div>
+
+    <div id="carousel-example-generic" class="carousel slide" data-ride="carousel">
+        <ol class="carousel-indicators">
+            <li data-target="#carousel-example-generic" data-slide-to="0" class="active"></li>
+            <li data-target="#carousel-example-generic" data-slide-to="1"></li>
+            <li data-target="#carousel-example-generic" data-slide-to="2"></li>
+        </ol>
+        <div class="carousel-inner" role="listbox">
+            <div class="item active">
+                <img src="img/htmls/pic-1.jpg" width="100%" height="100%" alt="First slide">
+            </div>
+            <div class="item">
+                <img src="img/htmls/pic-2.jpg" width="100%" height="100%" alt="Second slide">
+            </div>
+            <div class="item">
+                <img src="img/htmls/pic-3.jpg" width="100%" height="100%" alt="Third slide">
+            </div>
+
+        </div>
+        <a class="left carousel-control" href="#carousel-example-generic" role="button" data-slide="prev">
+            <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
+            <span class="sr-only">Previous</span>
+        </a>
+        <a class="right carousel-control" href="#carousel-example-generic" role="button" data-slide="next">
+            <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
+            <span class="sr-only">Next</span>
+        </a>
+    </div>
+    <div class="page-header">
+        <h1>${origin}的搜索结果</h1>
+    </div>
+    <div class="row">
+        <!--div class="col-md-6"-->
+        <!--table class="table"-->
+
+        <div class="table-responsive">
+            <table class="table table-striped">
+                <tr>
+                    <th>论文编号</th>
+                    <th>题目</th>
+                    <th>作者</th>
+                    <th>来源</th>
+                    <th>发表时间</th>
+                    <th>下载量</th>
+                </tr>
+                <%
+                    ArrayList<Paper> papers = (ArrayList<Paper>) request.getAttribute("papers");
+                %>
+                <c:forEach items="${papers}" var="papers">
+                    <tr>
+                        <td><a href="/zutki_war_exploded/PaperServlet?pid=${papers.pid}">${papers.pid}</a></td>
+                        <td><a href="/zutki_war_exploded/PaperServlet?pid=${papers.pid}">${papers.title}</a></td>
+                        <td>${papers.author}</td>
+                        <td>${papers.source}</td>
+                        <td>${papers.date}</td>
+                        <td>${papers.downCnt}</td>
+                    </tr>
+                </c:forEach>
+            </table>
+        </div>
+
+
+    </div>
+
+
+</div> <!-- /container -->
+
+
+<!-- Bootstrap core JavaScript
+================================================== -->
+<!-- Placed at the end of the document so the pages load faster -->
+<script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.min.js"></script>
+<script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery.min.js"><\/script>')</script>
+<script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
+<script src="../../assets/js/docs.min.js"></script>
+<!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
+<script src="../../assets/js/ie10-viewport-bug-workaround.js"></script>
+</body>
+</html>

web/htmls/index.jsp

+<%@ page import="entity.Paper" %>
+<%@ page import="java.util.ArrayList" %>
+<%@ page import="java.util.Vector" %>
+<%@ page language="java" contentType="text/html; charset=UTF-8"
+         pageEncoding="UTF-8" %>
+<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="utf-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <!-- 上述3个meta标签*必须*放在最前面，任何其他内容都*必须*跟随其后！ -->
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../favicon.ico">
+
+    <title>中工知网</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
+    <!-- Bootstrap theme -->
+    <link href="../../dist/css/bootstrap-theme.min.css" rel="stylesheet">
+    <!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
+    <link href="../../assets/css/ie10-viewport-bug-workaround.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="theme.css" rel="stylesheet">
+
+    <!-- Just for debugging purposes. Don't actually copy these 2 lines! -->
+    <!--[if lt IE 9]>
+    <script src="../../assets/js/ie8-responsive-file-warning.js"></script><![endif]-->
+    <script src="../../assets/js/ie-emulation-modes-warning.js"></script>
+
+    <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
+    <!--[if lt IE 9]>
+    <script src="https://cdn.bootcss.com/html5shiv/3.7.3/html5shiv.min.js"></script>
+    <script src="https://cdn.bootcss.com/respond.js/1.4.2/respond.min.js"></script>
+    <![endif]-->
+</head>
+
+<body>
+
+<!-- Fixed navbar -->
+<nav class="navbar navbar-inverse navbar-fixed-top">
+    <div class="container">
+        <div class="navbar-header">
+            <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar"
+                    aria-expanded="false" aria-controls="navbar">
+                <span class="sr-only">Toggle navigation</span>
+                <span class="icon-bar"></span>
+                <span class="icon-bar"></span>
+                <span class="icon-bar"></span>
+            </button>
+            <a class="navbar-brand" href="/zutki_war_exploded/IndexServlet">首页</a>
+        </div>
+        <div id="navbar" class="navbar-collapse collapse">
+            <ul class="nav navbar-nav">
+                <li><a href="#">经济</a></li>
+                <li><a href="#">信息</a></li>
+                <li><a href="#">医药</a></li>
+                <li><a href="#">社科</a></li>
+                <li><a href="#">理工</a></li>
+                <li><a href="#">工程</a></li>
+                <li><a href="#">高级检索</a></li>
+                <li><a href="/zutki_war_exploded/htmls/login.jsp">登陆</a></li>
+                <li><a href="/zutki_war_exploded/htmls/register.jsp">注册</a></li>
+                <li><a href="/zutki_war_exploded/LogoutServlet">退出登陆</a></li>
+
+            </ul>
+            <div class="col-lg-6" style="width: 300px;">
+
+                <form action="/zutki_war_exploded/SearchServlet" method="post">
+                    <select name="classify">
+                        <option value="author">作者</option>
+                        <option value="title">篇名</option>
+
+                    </select> <input type="search" name="search"/>
+                    <input type="submit" value="搜索"/>
+                </form>
+
+            </div><!-- /.col-lg-6 -->
+        </div><!--/.nav-collapse -->
+    </div>
+</nav>
+
+<div class="container theme-showcase" role="main">
+
+    <!-- Main jumbotron for a primary marketing message or call to action -->
+    <div class="jumbotron">
+        <h1>欢迎来到中国知网</h1>
+        <p>在这里希望你能找到您想要的一切</p>
+    </div>
+
+    <div id="carousel-example-generic" class="carousel slide" data-ride="carousel">
+        <ol class="carousel-indicators">
+            <li data-target="#carousel-example-generic" data-slide-to="0" class="active"></li>
+            <li data-target="#carousel-example-generic" data-slide-to="1"></li>
+            <li data-target="#carousel-example-generic" data-slide-to="2"></li>
+        </ol>
+        <div class="carousel-inner" role="listbox">
+            <div class="item active">
+                <img src="htmls/img/htmls/pic-1.jpg" width="100%" height="100%" alt="First slide">
+            </div>
+            <div class="item">
+                <img src="htmls/img/htmls/pic-2.jpg" width="100%" height="100%" alt="Second slide">
+            </div>
+            <div class="item">
+                <img src="htmls/img/htmls/pic-3.jpg" width="100%" height="100%" alt="Third slide">
+            </div>
+
+        </div>
+        <a class="left carousel-control" href="#carousel-example-generic" role="button" data-slide="prev">
+            <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
+            <span class="sr-only">Previous</span>
+        </a>
+        <a class="right carousel-control" href="#carousel-example-generic" role="button" data-slide="next">
+            <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
+            <span class="sr-only">Next</span>
+        </a>
+    </div>
+    <div class="page-header">
+        <h1>为您推荐</h1>
+    </div>
+    <div class="row">
+        <!--div class="col-md-6"-->
+        <!--table class="table"-->
+
+        <div class="table-responsive">
+            <table class="table table-striped">
+                <tr>
+                    <th>论文编号</th>
+                    <th>题目</th>
+                    <th>作者</th>
+                    <th>来源</th>
+                    <th>发表时间</th>
+                    <th>下载量</th>
+                </tr>
+                <%
+                ArrayList<Paper> recomends = (ArrayList<Paper>) request.getAttribute("recomends");
+                %>
+                <c:forEach items="${recomends}" var="recomend">
+                    <tr>
+                        <td><a href="/zutki_war_exploded/PaperServlet?pid=${recomend.pid}">${recomend.pid}</a></td>
+                        <td><a href="/zutki_war_exploded/PaperServlet?pid=${recomend.pid}">${recomend.title}</a></td>
+                        <td>${recomend.author}</td>
+                        <td>${recomend.source}</td>
+                        <td>${recomend.date}</td>
+                        <td>${recomend.downCnt}</td>
+                    </tr>
+                </c:forEach>
+            </table>
+        </div>
+
+
+    </div>
+
+
+</div> <!-- /container -->
+
+
+<!-- Bootstrap core JavaScript
+================================================== -->
+<!-- Placed at the end of the document so the pages load faster -->
+<script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.min.js"></script>
+<script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery.min.js"><\/script>')</script>
+<script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
+<script src="../../assets/js/docs.min.js"></script>
+<!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
+<script src="../../assets/js/ie10-viewport-bug-workaround.js"></script>
+</body>
+</html>

web/htmls/login.jsp

+<%@ page language="java" contentType="text/html; charset=UTF-8"
+         pageEncoding="UTF-8" %>
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="utf-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <!-- 上述3个meta标签*必须*放在最前面，任何其他内容都*必须*跟随其后！ -->
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../favicon.ico">
+
+    <title>中工知网</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
+
+    <!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
+    <link href="../../assets/css/ie10-viewport-bug-workaround.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="signin.css" rel="stylesheet">
+
+    <!-- Just for debugging purposes. Don't actually copy these 2 lines! -->
+    <!--[if lt IE 9]>
+    <script src="../../assets/js/ie8-responsive-file-warning.js"></script><![endif]-->
+    <script src="../../assets/js/ie-emulation-modes-warning.js"></script>
+
+    <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
+    <!--[if lt IE 9]>
+    <script src="https://cdn.bootcss.com/html5shiv/3.7.3/html5shiv.min.js"></script>
+    <script src="https://cdn.bootcss.com/respond.js/1.4.2/respond.min.js"></script>
+    <![endif]-->
+
+    <style>
+        html, body {
+
+            width: 100%;
+
+            height: 100%;
+
+        }
+
+        .mui-content {
+
+            background: url(img/htmls/paper.jpg) bottom center no-repeat #efeff4;
+
+            background-size: 100% 100%;
+
+            width: 100%;
+
+            height: 100%;
+
+        }
+
+    </style>
+
+</head>
+
+<body class="mui-content">
+<div>
+    <h1 style="border: aliceblue;text-align: center; height: 50px;"> 登录</h1>
+</div>
+<div class="container" style="border: blanchedalmond;width:500px;height:300px;text-align:center;>
+	  
+      <form class=" form-signin>
+
+<form action="/zutki_war_exploded/LoginServlet"method= "post">
+    <h2 class="form-signin-heading">请登录</h2>
+    <label for="inputEmail" class="sr-only">电子邮箱</label>
+    <input type="text" id="inputEmail" name="username" class="form-control" placeholder="Username" required autofocus>
+    <label for="inputPassword" class="sr-only">密码</label>
+    <input type="password" id="inputPassword" name="password" class="form-control" placeholder="Password" required>
+    <div class="checkbox">
+        <label>
+            <input type="checkbox" value="remember-me"> 记住密码
+        </label>
+    </div>
+    <button class="btn btn-lg btn-primary btn-block" type="submit">登录</button>
+    <h3>${status}</h3>
+</form>
+
+</div> <!-- /container -->
+
+
+<!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
+<script src="../../assets/js/ie10-viewport-bug-workaround.js"></script>
+</body>
+</html>

web/htmls/paper.jsp

+<%@ page import="entity.Paper" %>
+<%@ page import="java.util.ArrayList" %>
+<%@ page import="java.util.Vector" %>
+<%@ page import="util.ItemSimilarity" %>
+<%@ page language="java" contentType="text/html; charset=UTF-8"
+         pageEncoding="UTF-8" %>
+<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="utf-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <!-- 上述3个meta标签*必须*放在最前面，任何其他内容都*必须*跟随其后！ -->
+    <meta name="description" content="">
+    <meta name="author" content="">
+    <link rel="icon" href="../../favicon.ico">
+
+    <title>中工知网</title>
+
+    <!-- Bootstrap core CSS -->
+    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
+    <!-- Bootstrap theme -->
+    <link href="../../dist/css/bootstrap-theme.min.css" rel="stylesheet">
+    <!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
+    <link href="../../assets/css/ie10-viewport-bug-workaround.css" rel="stylesheet">
+
+    <!-- Custom styles for this template -->
+    <link href="theme.css" rel="stylesheet">
+
+    <!-- Just for debugging purposes. Don't actually copy these 2 lines! -->
+    <!--[if lt IE 9]>
+    <script src="../../assets/js/ie8-responsive-file-warning.js"></script><![endif]-->
+    <script src="../../assets/js/ie-emulation-modes-warning.js"></script>
+
+    <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
+    <!--[if lt IE 9]>
+    <script src="https://cdn.bootcss.com/html5shiv/3.7.3/html5shiv.min.js"></script>
+    <script src="https://cdn.bootcss.com/respond.js/1.4.2/respond.min.js"></script>
+    <![endif]-->
+</head>
+
+<body>
+
+<!-- Fixed navbar -->
+<nav class="navbar navbar-inverse navbar-fixed-top">
+    <div class="container">
+        <div class="navbar-header">
+            <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar"
+                    aria-expanded="false" aria-controls="navbar">
+                <span class="sr-only">Toggle navigation</span>
+                <span class="icon-bar"></span>
+                <span class="icon-bar"></span>
+                <span class="icon-bar"></span>
+            </button>
+            <a class="navbar-brand" href="/zutki_war_exploded/IndexServlet">首页</a>
+        </div>
+        <div id="navbar" class="navbar-collapse collapse">
+            <ul class="nav navbar-nav">
+                <li><a href="#">经济</a></li>
+                <li><a href="#">信息</a></li>
+                <li><a href="#">医药</a></li>
+                <li><a href="#">社科</a></li>
+                <li><a href="#">理工</a></li>
+                <li><a href="#">工程</a></li>
+                <li><a href="#">高级检索</a></li>
+                <li><a href="/zutki_war_exploded/htmls/login.jsp">登陆</a></li>
+                <li><a href="/zutki_war_exploded/htmls/regist.jsp">注册</a></li>
+                <li><a href="/zutki_war_exploded/LogoutServlet">退出登陆</a></li>
+
+            </ul>
+            <div class="col-lg-6" style="width: 300px;">
+                <div class="input-group">
+                    <input type="text" class="form-control">
+                    <span class="input-group-btn">
+		  					<button class="btn btn-default" type="button">
+		  						Go!
+		  					</button>
+		  				</span>
+                </div><!-- /input-group -->
+            </div><!-- /.col-lg-6 -->
+        </div><!--/.nav-collapse -->
+    </div>
+</nav>
+
+<div class="container theme-showcase" role="main">
+
+    <!-- Main jumbotron for a primary marketing message or call to action -->
+    <div class="jumbotron">
+        <h1>欢迎来到中国知网</h1>
+        <p>在这里希望你能找到您想要的一切</p>
+    </div>
+    <div class="page-header">
+        <h1>${paper.title}</h1>
+    </div>
+    <div class="well">
+        <h3>摘要</h3>
+        <p>${paper.digest}</p>
+        <h3>作者</h3>
+        <p>${paper.author}</p>
+        <h3>所在机构</h3>
+        <p>${paper.place}</p>
+        <h3>出版时间</h3>
+        <p>${paper.date}</p>
+        <h3>论文编号</h3>
+        <p>${paper.pid}</p>
+        <h3>喜欢数量</h3>
+        <p>${paper.cnt}</p>
+        <h3>喜欢数量</h3>
+        <p>${paper.downCnt}</p>
+    </div>
+
+    <div class="page-header">
+        <h6>快来评价一下吧~</h6>
+    </div>
+
+    <p>
+        <button type="button" class="btn btn-success">喜欢</button>
+        <script>
+            function fun()
+            {
+                <%
+                    Paper paper = (Paper)request.getAttribute("paper");
+                    request.setAttribute("lid", paper.getPid());
+                %>
+            }
+        </script>
+    </p>
+
+    <input type="button" value="收藏">
+    <input type="button" value="PDF下载">
+
+    <div class="page-header">
+        <h1>相似推荐</h1>
+    </div>
+    <div class="row">
+        <div class="table-responsive">
+            <table class="table table-striped">
+                <tr>
+                    <th>论文编号</th>
+                    <th>题目</th>
+                    <th>作者</th>
+                    <th>来源</th>
+                    <th>发表时间</th>
+                    <th>下载量</th>
+                </tr>
+                <%
+                    ArrayList<Paper> recomends = (ArrayList<Paper>) ItemSimilarity.recommend(Integer.parseInt(request.getParameter("pid")));
+                    request.setAttribute("recomends", recomends);
+                %>
+                <c:forEach items="${recomends}" var="recomend">
+                    <tr>
+                        <td><a href="/zutki_war_exploded/PaperServlet?pid=${recomend.pid}">${recomend.pid}</a></td>
+                        <td><a href="/zutki_war_exploded/PaperServlet?pid=${recomend.pid}">${recomend.title}</a></td>
+                        <td>${recomend.author}</td>
+                        <td>${recomend.source}</td>
+                        <td>${recomend.date}</td>
+                        <td>${recomend.downCnt}</td>
+                    </tr>
+                </c:forEach>
+            </table>
+        </div>
+
+
+    </div>
+
+
+</div> <!-- /container -->
+
+
+<!-- Bootstrap core JavaScript
+================================================== -->
+<!-- Placed at the end of the document so the pages load faster -->
+<script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.min.js"></script>
+<script>window.jQuery || document.write('<script src="../../assets/js/vendor/jquery.min.js"><\/script>')</script>
+<script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
+<script src="../../assets/js/docs.min.js"></script>
+<!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
+<script src="../../assets/js/ie10-viewport-bug-workaround.js"></script>
+</body>
+</html>

web/htmls/register.jsp

+<%@ page language="java" contentType="text/html; charset=UTF-8"
+         pageEncoding="UTF-8" %>
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <title>中工知网</title>
+    <link rel="stylesheet" type="text/css">
+
+
+    <style>
+
+    </style>
+
+</head>
+
+<body>
+<div id="example">
+    <div class="wrap">
+        <header class="top-header">
+
+
+        </header>
+        <main class="form">
+            <h3>注册申请</h3>
+            <p>注：<span class="red">*</span>为必填内容</p>
+            <form action="/zutki_war_exploded/RegistServlet" method="post">
+                <fieldset>
+                    <legend>账号信息</legend>
+
+                    <label for="username" class="left">用户名：<span class="red">*</span></label>
+                    <input type="username" id="username" name="username" class="right" required><br>
+
+                    <label for="password" class="left">密&nbsp;&nbsp;码<span class="red">*</span></label>
+                    <input type="password" id="password" name="password" class="right" required><br>
+
+                    <label for="major" class="left">专&nbsp;&nbsp;业<span class="red"></span></label>
+                    <select name="major" id="major" class="right">
+                        <option value="economics">经济</option>
+                        <option value="society">社科</option>
+                        <option value="technology">工程</option>
+                        <option value="information">信息</option>
+                        <option value="others">其他</option>
+                    </select><br>
+
+
+                    <label for="email" class="left"> 邮&nbsp;&nbsp;箱<span class="red">*</span></label>
+                    <input type="email" id="email" name="email" class="right" required><br>
+
+
+                </fieldset>
+                <fieldset>
+
+                    <div align="center">
+                        <input name="yes" type="checkbox" id="yes"/><label for="yes">已阅读并同意上述条款</label>
+
+                    </div>
+                </fieldset>
+                <input type="reset" class="btn" value="重 填">
+                <input type="submit" class="btn" value="注 册">
+                <h3>${message}</h3>
+            </form>
+        </main>
+    </div>
+</div>
+</body>
+</html>
\ No newline at end of file

web/thtml/classify.jsp

+<%@ page import="entity.Paper" %>
+<%@ page import="java.util.Vector" %>
+<%@ page import="java.util.List" %>
+
+<%@ page language="java" contentType="text/html; charset=UTF-8"
+		 pageEncoding="UTF-8" %>
+<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
+<!doctype html>
+<html lang="en">
+<head>
+<meta charset="UTF-8">
+
+<title>中工知网</title>
+
+
+<style type="text/css">
+.class1{
+margin:0px 250px 0px 250px; 
+
+
+}
+
+ul {
+    list-style-type: none;
+    margin: 0;
+    padding: 0;
+    overflow: hidden;
+    background-color: #333;
+}
+
+li {
+    float: left;
+}
+
+li a {
+    display: block;
+    color: white;
+    text-align: center;
+    padding: 14px 16px;
+    text-decoration: none;
+}
+
+li a:hover {
+    background-color: #111;
+}
+
+table,td,th
+{
+	
+}
+table
+{
+
+	width:100%;
+}
+th
+{
+    border-top-style:solid;
+    border-left-style:solid;
+ 
+	height:50px;
+}
+td{
+  border-top-style:solid;
+    border-left-style:solid;
+  
+}
+
+* {
+            margin: 0;
+            padding: 0;
+            text-decoration: none;
+        }
+        
+     body {
+            padding: 20px;
+        }
+   
+        #container {
+            position: relative;
+            width: 600px;
+            height: 400px;
+            border: 3px solid #333;
+            overflow: hidden;
+        }
+        
+        #list {
+            position: absolute;
+            z-index: 1;
+            width: 4200px;
+            height: 400px;
+        }
+        
+        #list img {
+            float: left;
+            width: 600px;
+            height: 400px;
+        }
+        
+        #buttons {
+            position: absolute;
+            left: 250px;
+            bottom: 20px;
+            z-index: 2;
+            height: 10px;
+            width: 100px;
+        }
+        
+        #buttons span {
+            float: left;
+            margin-right: 5px;
+            width: 10px;
+            height: 10px;
+            border: 1px solid #fff;
+            border-radius: 50%;
+            background: #333;
+            cursor: pointer;
+          }
+  
+        #buttons .on {
+            background: orangered;
+        }
+        
+        .arrow {
+            position: absolute;
+            top: 180px;
+            z-index: 2;
+            display: none;
+            width: 40px;
+            height: 40px;
+            font-size: 36px;
+            font-weight: bold;
+            line-height: 39px;
+            text-align: center;
+            color: #fff;
+            background-color: RGBA(0, 0, 0, .3);
+            cursor: pointer;
+        }
+        
+        .arrow:hover {
+            background-color: RGBA(0, 0, 0, .7);
+        }
+        
+        #container:hover .arrow {
+            display: block;
+        }
+        
+        #prev {
+            left: 20px;
+        }
+        
+        #next {
+            right: 20px;
+        }
+
+</style>
+</head>
+
+
+<body>
+
+		<div class="class1">
+
+			<div class="class2">
+				<img src="htmls/header.png"/>
+			</div>
+			<div class="class2">
+				<ul class="ul1">
+					<li class="ul1"><a href="/zutki_war_exploded/IndexServlet>首页</a></li>
+					<li class="ul1"><a href="">经济</a></li>
+					<li class="ul1"><a href="">信息</a></li>
+					<li class="ul1"><a href="">医药</a></li>
+					<li class="ul1"><a href="">社科</a></li>
+					<li class="ul1"><a href="">农业</a></li>
+					<li class="ul1"><a href="">理工</a></li>
+					<li class="ul1"><a href="">人文</a></li>
+					<li class="ul1"><a href="">工程</a></li>
+					<li class="ul1"><a href="">高级检索</a></li>
+					<li  id="t1" class="ul1"><a href="/zutki_war_exploded/htmls/login.jsp">登录</a></li>
+					<li id="t2"  class="ul1"><a href="/zutki_war_exploded/htmls/regist.jsp">注册</a></li>
+					<li id="welcome"> 欢迎登录</li>
+
+					<script>
+						var temp='<%=request.getParameter("a")%>';
+						var id1=document.getElementById("t1");
+						var id2=document.getElementById("t2");
+						var id3=document.getElementById("welcome");
+						if(temp==0){
+							id1.style.display="none";
+							id2.style.display="none";
+							id3.style.display="";
+						}
+					</script>
+				</ul>
+			</div>
+	
+		<div >
+		
+			<form action="/zutki_war_exploded/SearchServlet" method="post">
+				<select name="classify">
+					<option value="author">作者</option>
+					<option value="title">篇名</option>
+					
+				</select> <input type="search" name="search" /> 
+				<input type="submit" value="搜索" />
+					
+			</form>
+
+
+			<div><h3>搜索结果</h3>
+				<table>
+					<tr>
+						<th>论文编号</th>
+						<th>题名</th>
+						<th>作者</th>
+						<th>来源</th>
+						<th>发表时间</th>
+						<th>下载量</th>
+					</tr>
+					<%
+						List<Paper> papers = (List<Paper>) request.getAttribute("papers");
+					%>
+					<c:forEach items="${papers}" var="papers">
+						<tr>
+							<td><a href="/zutki_war_exploded/PaperServlet?pid=${papers.pid}">${papers.pid}</a></td>
+							<td><a href="/zutki_war_exploded/PaperServlet?pid=${papers.pid}">${papers.title}</a></td>
+							<td>${papers.author}</td>
+							<td>${papers.source}</td>
+							<td>${papers.date}</td>
+							<td>${papers.downCnt}</td>
+						</tr>
+					</c:forEach>
+				</table>
+			</div>
+
+ 		 </div>
+  </div>
+  </body>
+  </html>
+ 
\ No newline at end of file

web/thtml/index.jsp

+<%@ page import="entity.Paper" %>
+<%@ page import="java.util.ArrayList" %>
+<%@ page import="java.util.Vector" %>
+<%@ page language="java" contentType="text/html; charset=UTF-8"
+         pageEncoding="UTF-8" %>
+<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
+<!doctype html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+
+    <title>中工知网</title>
+
+
+    <style type="text/css">
+        .class1 {
+            margin: 0px 250px 0px 250px;
+
+
+        }
+
+        ul {
+            list-style-type: none;
+            margin: 0;
+            padding: 0;
+            overflow: hidden;
+            background-color: #333;
+        }
+
+        li {
+            float: left;
+        }
+
+        li a {
+            display: block;
+            color: white;
+            text-align: center;
+            padding: 14px 16px;
+            text-decoration: none;
+        }
+
+        li a:hover {
+            background-color: #111;
+        }
+
+        table, td, th {
+
+        }
+
+        table {
+
+            width: 100%;
+        }
+
+        th {
+            border-top-style: solid;
+            border-left-style: solid;
+
+            height: 50px;
+        }
+
+        td {
+            border-top-style: solid;
+            border-left-style: solid;
+
+        }
+
+        * {
+            margin: 0;
+            padding: 0;
+            text-decoration: none;
+        }
+
+        body {
+            padding: 20px;
+        }
+
+        #container {
+            position: relative;
+            width: 600px;
+            height: 400px;
+            border: 3px solid #333;
+            overflow: hidden;
+        }
+
+        #list {
+            position: absolute;
+            z-index: 1;
+            width: 4200px;
+            height: 400px;
+        }
+
+        #list img {
+            float: left;
+            width: 600px;
+            height: 400px;
+        }
+
+        #buttons {
+            position: absolute;
+            left: 250px;
+            bottom: 20px;
+            z-index: 2;
+            height: 10px;
+            width: 100px;
+        }
+
+        #buttons span {
+            float: left;
+            margin-right: 5px;
+            width: 10px;
+            height: 10px;
+            border: 1px solid #fff;
+            border-radius: 50%;
+            background: #333;
+            cursor: pointer;
+        }
+
+        #buttons .on {
+            background: orangered;
+        }
+
+        .arrow {
+            position: absolute;
+            top: 180px;
+            z-index: 2;
+            display: none;
+            width: 40px;
+            height: 40px;
+            font-size: 36px;
+            font-weight: bold;
+            line-height: 39px;
+            text-align: center;
+            color: #fff;
+            background-color: RGBA(0, 0, 0, .3);
+            cursor: pointer;
+        }
+
+        .arrow:hover {
+            background-color: RGBA(0, 0, 0, .7);
+        }
+
+        #container:hover .arrow {
+            display: block;
+        }
+
+        #prev {
+            left: 20px;
+        }
+
+        #next {
+            right: 20px;
+        }
+
+        #welcome {
+            display: none;
+        }
+    </style>
+
+
+</head>
+
+
+<body>
+
+<div class="class1">
+
+    <div class="class2">
+        <img src="htmls/header.png"/>
+    </div>
+    <div class="class2">
+        <ul class="ul1">
+            <li class="ul1"><a href="/zutki_war_exploded/IndexServlet">首页</a></li>
+            <li class="ul1"><a href="">经济</a></li>
+            <li class="ul1"><a href="">信息</a></li>
+            <li class="ul1"><a href="">医药</a></li>
+            <li class="ul1"><a href="">社科</a></li>
+            <li class="ul1"><a href="">农业</a></li>
+            <li class="ul1"><a href="">理工</a></li>
+            <li class="ul1"><a href="">人文</a></li>
+            <li class="ul1"><a href="">工程</a></li>
+            <li class="ul1"><a href="">高级检索</a></li>
+            <li id="t1" class="ul1"><a href="/zutki_war_exploded/htmls/login.jsp">登录</a></li>
+            <li id="t2" class="ul1"><a href="/zutki_war_exploded/htmls/regist.jsp">注册</a></li>
+            <li id="welcome"> 欢迎登录</li>
+
+            <script>
+                var temp = '<%=request.getParameter("a")%>';
+                var id1 = document.getElementById("t1");
+                var id2 = document.getElementById("t2");
+                var id3 = document.getElementById("welcome");
+                if (temp == 0) {
+                    id1.style.display = "none";
+                    id2.style.display = "none";
+                    id3.style.display = "";
+                }
+            </script>
+        </ul>
+    </div>
+
+    <div>
+
+        <form action="/zutki_war_exploded/SearchServlet" method="post">
+            <select name="classify">
+                <option value="author">作者</option>
+                <option value="title">篇名</option>
+
+            </select> <input type="search" name="search"/>
+            <input type="submit" value="搜索"/>
+
+        </form>
+
+
+        <div id="container">
+            <div id="list" style="left: -600px;">
+                <img src="htmls/5.jpg" alt="1"/>
+                <img src="htmls/1.jpg" alt="1"/>
+                <img src="htmls/2.jpg" alt="2"/>
+                <img src="htmls/3.jpg" alt="3"/>
+                <img src="htmls/4.jpg" alt="4"/>
+                <img src="htmls/5.jpg" alt="5"/>
+                <img src="htmls/1.jpg" alt="5"/>
+            </div>
+            <div id="buttons">
+                <span index="1" class="on"></span>
+                <span index="2"></span>
+                <span index="3"></span>
+                <span index="4"></span>
+                <span index="5"></span>
+            </div>
+            <a href="javascript:;" id="prev" class="arrow">&lt;</a>
+            <a href="javascript:;" id="next" class="arrow">&gt;</a>
+        </div>
+        <script type="text/javascript">
+            /* 知识点：        */
+            /*       this用法 */
+            /*       DOM事件 */
+
+            window.onload = function () {
+                var container = document.getElementById('container');
+                var list = document.getElementById('list');
+                var buttons = document.getElementById('buttons').getElementsByTagName('span');
+                var prev = document.getElementById('prev');
+                var next = document.getElementById('next');
+                var index = 1;
+                var timer;
+
+                function animate(offset) {
+                    var newLeft = parseInt(list.style.left) + offset;
+                    list.style.left = newLeft + 'px';
+                    if (newLeft > -600) {
+                        list.style.left = -3000 + 'px';
+                    }
+                    if (newLeft < -3000) {
+                        list.style.left = -600 + 'px';
+                    }
+                }
+
+                function play() {
+                    //重复执行的定时器
+                    timer = setInterval(function () {
+                        next.onclick();
+                    }, 2000)
+                }
+
+                function stop() {
+                    clearInterval(timer);
+                }
+
+                function buttonsShow() {
+                    //将之前的小圆点的样式清除
+                    for (var i = 0; i < buttons.length; i++) {
+                        if (buttons[i].className == "on") {
+                            buttons[i].className = "";
+                        }
+                    }
+                    //数组从0开始，故index需要-1
+                    buttons[index - 1].className = "on";
+                }
+
+                prev.onclick = function () {
+                    index -= 1;
+                    if (index < 1) {
+                        index = 5
+                    }
+                    buttonsShow();
+                    animate(600);
+                };
+                next.onclick = function () {
+                    index += 1;
+                    if (index > 5) {
+                        index = 1
+                    }
+                    animate(-600);
+                    buttonsShow();
+                };
+
+                for (var i = 0; i < buttons.length; i++) {
+                    (function (i) {
+                        buttons[i].onclick = function () {
+
+                            /*   这里获得鼠标移动到小圆点的位置，用this把index绑定到对象buttons[i]上，去谷歌this的用法  */
+                            /*   由于这里的index是自定义属性，需要用到getAttribute()这个DOM2级方法，去获取自定义index的属性*/
+                            var clickIndex = parseInt(this.getAttribute('index'));
+                            var offset = 600 * (index - clickIndex); //这个index是当前图片停留时的index
+                            animate(offset);
+                            index = clickIndex; //存放鼠标点击后的位置，用于小圆点的正常显示
+                            buttonsShow();
+                        }
+                    })(i)
+                }
+
+                container.onmouseover = stop;
+                container.onmouseout = play;
+                play();
+
+            }
+        </script>
+
+        　　　
+
+        <div>
+            <h3>为您推荐</h3>
+            <table>
+                <tr>
+                    <th>论文编号</th>
+                    <th>题名</th>
+                    <th>作者</th>
+                    <th>来源</th>
+                    <th>发表时间</th>
+                    <th>下载量</th>
+                </tr>
+                <%
+                    ArrayList<Paper> recomends = (ArrayList<Paper>) request.getAttribute("recomends");
+                %>
+                <c:forEach items="${recomends}" var="recomend">
+                    <tr>
+                        <td><a href="/zutki_war_exploded/PaperServlet?pid=${recomend.pid}">${recomend.pid}</a></td>
+                        <td><a href="/zutki_war_exploded/PaperServlet?pid=${recomend.pid}">${recomend.title}</a></td>
+                        <td>${recomend.author}</td>
+                        <td>${recomend.source}</td>
+                        <td>${recomend.date}</td>
+                        <td>${recomend.downCnt}</td>
+                    </tr>
+                </c:forEach>
+
+
+            </table>
+        </div>
+
+        <div>
+            <h3>最新发表</h3>
+            <table>
+                <tr>
+                    <th>论文编号</th>
+                    <th>题名</th>
+                    <th>作者</th>
+                    <th>来源</th>
+                    <th>作者</th>
+                    <th>下载量</th>
+                </tr>
+                <%
+                    Vector<Paper> papers = (Vector<Paper>) request.getAttribute("papers");
+                %>
+                <c:forEach items="${papers}" var="paper">
+                    <tr>
+                        <td><a href="/zutki_war_exploded/PaperServlet?pid=${paper.pid}">${paper.pid}</a></td>
+                        <td><a href="/zutki_war_exploded/PaperServlet?pid=${paper.pid}">${paper.title}</a></td>
+                        <td>${paper.author}</td>
+                        <td>${paper.source}</td>
+                        <td>${paper.date}</td>
+                        <td>${paper.downCnt}</td>
+                    </tr>
+                </c:forEach>
+            </table>
+        </div>
+    </div>
+</div>
+</div>
+</body>
+</html>

web/thtml/login.jsp

+<%@ page language="java" contentType="text/html; charset=UTF-8"
+    pageEncoding="UTF-8"%>
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="UTF-8"> 
+
+<title>中工知网</title>
+
+</head>
+<body>
+<form action="/zutki_war_exploded/LoginServlet"method= "post">
+      账号:<input type="text" name="username"><br/>
+     密码:<input type="password" name="password"><br/>
+     <input  type="submit"  value="登陆">
+     <h3>${status}</h3>
+</form>
+</body>
+</html>    
\ No newline at end of file

web/thtml/paper.jsp

+<%@ page import="entity.Paper" %>
+<%@ page import="java.util.Vector" %>
+<%@ page language="java" contentType="text/html; charset=UTF-8"
+		 pageEncoding="UTF-8"%>
+<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
+<!doctype html>
+<html lang="en">
+<head>
+<meta charset="UTF-8">
+
+<title>中工知网</title>
+
+
+<style type="text/css">
+.class1{
+margin:0px 250px 0px 250px; 
+
+
+}
+
+.class1 {
+	margin: 0px 250px 0px 250px;
+
+
+}
+
+ul {
+	list-style-type: none;
+	margin: 0;
+	padding: 0;
+	overflow: hidden;
+	background-color: #333;
+}
+
+li {
+	float: left;
+}
+
+li a {
+	display: block;
+	color: white;
+	text-align: center;
+	padding: 14px 16px;
+	text-decoration: none;
+}
+
+li a:hover {
+	background-color: #111;
+}
+
+table, td, th {
+
+}
+
+table {
+
+	width: 100%;
+}
+
+th {
+	border-top-style: solid;
+	border-left-style: solid;
+
+	height: 50px;
+}
+
+td {
+	border-top-style: solid;
+	border-left-style: solid;
+
+}
+
+* {
+	margin: 0;
+	padding: 0;
+	text-decoration: none;
+}
+
+
+
+</style>
+
+
+</head>
+
+
+
+
+
+<body>
+
+		<div class="class1">	
+	
+	<div class="class2">	
+		<img src="htmls/header.png" />
+	</div>
+	<div class="class2"  >
+		<ul class="ul1">
+			<li class="ul1"><a href="/zutki_war_exploded/IndexServlet">首页</a></li>
+			<li class="ul1"><a href="">经济</a></li>
+			<li class="ul1"><a href="">信息</a></li>
+			<li class="ul1"><a href="">医药</a></li>
+			<li class="ul1"><a href="">社科</a></li>
+			<li class="ul1"><a href="">农业</a></li>
+			<li class="ul1"><a href="">理工</a></li>
+			<li class="ul1"><a href="">人文</a></li>
+			<li class="ul1"><a href="">工程</a></li>
+			<li class="ul1"><a href="">高级检索</a></li>
+			<li id="t1" class="ul1"><a href="/zutki_war_exploded/htmls/login.jsp">登录</a></li>
+			<li id="t2" class="ul1"><a href="/zutki_war_exploded/htmls/regist.jsp">注册</a></li>
+			<li id="welcome"> 欢迎登录</li>
+
+			<script>
+				var temp = '<%=request.getParameter("a")%>';
+				var id1 = document.getElementById("t1");
+				var id2 = document.getElementById("t2");
+				var id3 = document.getElementById("welcome");
+				if (temp == 0) {
+					id1.style.display = "none";
+					id2.style.display = "none";
+					id3.style.display = "";
+				}
+			</script>
+		</ul>
+	</div>
+	
+		<div >
+		
+			<form action="/zutki_war_exploded/SearchServlet" method="post">
+				<select name="classify">
+					<option value="author">作者</option>
+					<option value="title">篇名</option>
+					
+				</select> <input type="search" name="search" /> 
+				<input type="submit" value="搜索" />
+					
+			</form>
+</div>
+		<div>
+		<h2>${paper.title}</h2>
+		<h4>摘要:</h4><br/>
+		
+		${paper.digest}
+		
+		<h4>论文id:</h4>
+		 ${paper.pid}
+		
+		<h4>下载量：</h4>
+		 ${paper.downCnt}
+		
+		<h4>喜欢人数：</h4>
+		${paper.cnt}
+			<br>
+
+		<input type="button" value="喜欢" onclick="fun()">
+			<script>
+				function fun()
+				{
+					<%
+						Paper paper = (Paper)request.getAttribute("paper");
+						request.setAttribute("lid", paper.getPid());
+					%>
+				}
+			</script>
+		<br>
+		<input type="button" value="收藏">
+		<input type="button" value="PDF下载">
+		</div>
+		</div>
+
+</body>
+</html>
\ No newline at end of file

web/thtml/regist.jsp

+<%@ page language="java" contentType="text/html; charset=UTF-8"
+    pageEncoding="UTF-8"%>
+<!DOCTYPE html>
+<html>
+<head>
+	<meta charset="utf-8">
+	<title>中工知网</title>
+	<link rel="stylesheet" type="text/css" >
+	
+	
+<style >
+
+</style>	
+
+</head>
+
+<body>
+<div id="example">
+	<div class="wrap">
+		<header class="top-header">
+
+			
+		</header>
+		<main class="form">
+			<h3>注册申请</h3>
+			<p>注：<span class="red">*</span>为必填内容</p>
+			<form action="/zutki_war_exploded/RegistServlet" method="post">
+				<fieldset>
+							<legend>账号信息</legend>
+					
+					<label for="username" class="left">用户名：<span class="red">*</span></label>
+					<input type="username" id="username"name="username" class="right" required><br>
+					
+					<label for="password" class="left">密&nbsp;&nbsp;码<span class="red">*</span></label>
+					<input type="password" id="password"name="password" class="right" required><br>
+					
+					<label for="major" class="left">专&nbsp;&nbsp;业<span class="red"></span></label>
+					<select  name="major" id="major" class="right" >
+						<option value="economics">经济</option>
+						<option value="society">社科</option>
+						<option value="technology">工程</option>
+						<option value="information">信息</option>
+						<option value="others">其他</option>
+						</select><br>
+						
+						
+					<label for="email" class="left"> 邮&nbsp;&nbsp;箱<span class="red">*</span></label>
+					<input type="email" id="email"name="email" class="right" required><br>
+					
+
+				</fieldset>
+				<fieldset>
+			
+					<div align="center">
+						<input name="yes" type="checkbox" id="yes" /><label for="yes">已阅读并同意上述条款</label>
+						
+					</div>
+				</fieldset>
+					<input type="reset" class="btn" value="重 填">
+					<input type="submit" class="btn" value="注 册">
+					<h3>${message}</h3>
+			</form>
+		</main>
+	</div>
+</div>
+</body>
+</html>
\ No newline at end of file

zutki.iml

+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="FacetManager">
+    <facet type="web" name="Web">
+      <configuration>
+        <descriptors>
+          <deploymentDescriptor name="web.xml" url="file://$MODULE_DIR$/web/WEB-INF/web.xml" />
+        </descriptors>
+        <webroots>
+          <root url="file://$MODULE_DIR$/web" relative="/" />
+        </webroots>
+      </configuration>
+    </facet>
+  </component>
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+      <excludeFolder url="file://$MODULE_DIR$/src/com/zutki/dao/impl" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="Java EE 6-Java EE 6" level="project" />
+    <orderEntry type="module-library" exported="">
+      <library>
+        <CLASSES>
+          <root url="jar://$MODULE_DIR$/web/WEB-INF/lib/mysql-connector-java-8.0.13.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+    <orderEntry type="module-library">
+      <library>
+        <CLASSES>
+          <root url="jar://$MODULE_DIR$/web/WEB-INF/lib/standard-1.1.2.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+    <orderEntry type="module-library">
+      <library>
+        <CLASSES>
+          <root url="jar://$MODULE_DIR$/web/WEB-INF/lib/jstl-1.2.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
+  </component>
+</module>
\ No newline at end of file