WebProject

WebProject/.classpath

+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JDK8_64">
+		<attributes>
+			<attribute name="owner.project.facets" value="java"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.jst.server.core.container/org.eclipse.jst.server.tomcat.runtimeTarget/Apache Tomcat v8.5">
+		<attributes>
+			<attribute name="owner.project.facets" value="jst.web"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.web.container"/>
+	<classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.module.container"/>
+	<classpathentry kind="output" path="build/classes"/>
+</classpath>

WebProject/.project

+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>WebProject</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.wst.common.project.facet.core.builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.wst.validation.validationbuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jem.workbench.JavaEMFNature</nature>
+		<nature>org.eclipse.wst.common.modulecore.ModuleCoreNature</nature>
+		<nature>org.eclipse.wst.common.project.facet.core.nature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.wst.jsdt.core.jsNature</nature>
+	</natures>
+</projectDescription>

WebProject/.settings/.jsdtscope

+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry excluding="**/bower_components/*|**/node_modules/*|**/*.min.js" kind="src" path="WebContent"/>
+	<classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.JRE_CONTAINER"/>
+	<classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.WebProject">
+		<attributes>
+			<attribute name="hide" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.baseBrowserLibrary"/>
+	<classpathentry kind="output" path=""/>
+</classpath>

WebProject/.settings/org.eclipse.jdt.core.prefs

+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.source=1.8

WebProject/.settings/org.eclipse.wst.common.component

+<?xml version="1.0" encoding="UTF-8"?><project-modules id="moduleCoreId" project-version="1.5.0">
+    <wb-module deploy-name="WebProject">
+        <wb-resource deploy-path="/" source-path="/WebContent" tag="defaultRootSource"/>
+        <wb-resource deploy-path="/WEB-INF/classes" source-path="/src"/>
+        <property name="context-root" value="WebProject"/>
+        <property name="java-output-path" value="/WebProject/build/classes"/>
+    </wb-module>
+</project-modules>

WebProject/.settings/org.eclipse.wst.common.project.facet.core.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<faceted-project>
+  <runtime name="Apache Tomcat v8.5"/>
+  <fixed facet="java"/>
+  <fixed facet="jst.web"/>
+  <fixed facet="wst.jsdt.web"/>
+  <installed facet="java" version="1.8"/>
+  <installed facet="jst.web" version="2.5"/>
+  <installed facet="wst.jsdt.web" version="1.0"/>
+</faceted-project>

WebProject/.settings/org.eclipse.wst.jsdt.ui.superType.container

+org.eclipse.wst.jsdt.launching.baseBrowserLibrary
\ No newline at end of file

WebProject/.settings/org.eclipse.wst.jsdt.ui.superType.name

+Window
\ No newline at end of file

WebProject/WebContent/META-INF/MANIFEST.MF

+Manifest-Version: 1.0
+Class-Path: 
+

WebProject/WebContent/WEB-INF/web.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
+  <display-name>WebProject</display-name>
+  <welcome-file-list>
+    <welcome-file>index.html</welcome-file>
+    <welcome-file>index.htm</welcome-file>
+    <welcome-file>index.jsp</welcome-file>
+    <welcome-file>default.html</welcome-file>
+    <welcome-file>default.htm</welcome-file>
+    <welcome-file>default.jsp</welcome-file>
+  </welcome-file-list>
+</web-app>
\ No newline at end of file

WebProject/WebContent/check.jsp

+<%@ page language="java" contentType="text/html; charset=UTF-8"
+    pageEncoding="UTF-8"%>
+<%@ page import="com.stx.dao.LoginDao" %>
+<%@ page import="com.stx.entity.*" %>
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="UTF-8">
+<title>Insert title here</title>
+</head>
+<body>
+	<%
+		String name = request.getParameter("uname");
+		String pwd = request.getParameter("upwd");
+		Login login = new Login(name, pwd);
+		LoginDao dao = new LoginDao();
+		int result = dao.login(login);
+		if(result>0){
+			out.print("登录成功！");
+		}else if(result==0){
+			out.print("用户名或密码有误！");
+		}else{
+			out.print("系统异常！");
+		}
+	%>
+</body>
+</html>
\ No newline at end of file

WebProject/WebContent/index.jsp

+<%@ page language="java" contentType="text/html; charset=UTF-8"
+    pageEncoding="UTF-8"%>
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="UTF-8">
+<title>Insert title here</title>
+</head>
+<body>
+	<form action="check.jsp" method="post">
+		用户名：<input type="text" name="uname" /></br>
+		密码：<input type="password" name="upwd" /></br>
+		<input type="submit" value="登录" />
+	</form>
+</body>
+</html>
\ No newline at end of file

WebProject/src/com/stx/dao/LoginDao.java

+package com.stx.dao;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+import com.stx.entity.Login;
+
+public class LoginDao {
+//	public int login(String name,String pwd) {	//1:登录成功 0:登录失败(用户名或密码有误) -1：系统异常
+	public int login(Login login) {
+		final String URL = "jdbc:mysql://localhost:3306/test?serverTimezone=UTC";
+		final String USERNAME = "root";
+		final String PWD = "123456";
+		Connection connection = null;
+		ResultSet rs = null;
+		PreparedStatement pstmt = null;
+		try {
+			//1.导入驱动，加载具体的驱动类
+			Class.forName("com.mysql.cj.jdbc.Driver");	//加载具体的驱动类
+			//2.与数据库建立连接
+			connection = DriverManager.getConnection(URL, USERNAME, PWD);
+			//3.发送sql，执行(增删改、【查】)
+			String sql = "select count(*) from login where uname=? and password = ?";
+			pstmt = connection.prepareStatement(sql);	//预编译
+			pstmt.setString(1,login.getUname());
+			pstmt.setString(2,login.getPassword());
+			rs = pstmt.executeQuery();
+			//4.处理结果
+			int count = -1;
+			if(rs.next()) {
+				count = rs.getInt(1);
+			}
+			return count;
+		}catch(ClassNotFoundException e) {
+			e.printStackTrace();
+			return -1;
+		}catch(SQLException e) {
+			e.printStackTrace();
+			return -1;
+		}catch(Exception e) {
+			e.printStackTrace();
+			return -1;
+		}finally {
+			try {
+				if(rs!=null)
+					rs.close();
+				if(connection!=null)
+					connection.close();
+			} catch (SQLException e) {
+				e.printStackTrace();
+			}
+		}
+	}
+}

WebProject/src/com/stx/entity/Login.java

+package com.stx.entity;
+
+public class Login {
+	private String uname;
+	private String password;
+	
+	public Login() {
+	}
+	public Login(String uname, String password) {
+		super();
+		this.uname = uname;
+		this.password = password;
+	}
+	public String getUname() {
+		return uname;
+	}
+	public void setUname(String uname) {
+		this.uname = uname;
+	}
+	public String getPassword() {
+		return password;
+	}
+	public void setPassword(String password) {
+		this.password = password;
+	}
+	
+}