默认的

src/main/java/com/hao/digitalsignature/controller/FileDealController.java

@@ -3,6 +3,7 @@ package com.hao.digitalsignature.controller;
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.hao.digitalsignature.encryption.AES1;
 import com.hao.digitalsignature.encryption.AESmiyao;
+import com.hao.digitalsignature.encryption.DownloadMsg;
 import com.hao.digitalsignature.encryption.RSAEncrypt;
 import com.hao.digitalsignature.entity.Files;
 import com.hao.digitalsignature.mapper.FileMapper;
@@ -13,13 +14,10 @@ import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.multipart.MultipartFile;
 
-import javax.servlet.ServletContext;
+
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.IOException;
-import java.io.OutputStream;
+import java.io.*;
 import java.net.SocketException;
 import java.net.URLEncoder;
 import java.util.*;
@@ -70,36 +68,7 @@ public class FileDealController {
         // 得到要下载的文件名
         fileName = fileName.substring(0,fileName.length()-1);
         try {
-            //获取摘要
-            QueryWrapper<Files> wrapper = new QueryWrapper<>();
-            wrapper.eq("picture_realname", fileName.split("\\.")[0]);
-            Files files = fileMapper.selectOne(wrapper);
-            System.out.println("摘要："+files.getDig().split(";")[2]);
-
-            List<String> dig=new ArrayList<String>(Arrays.asList(files.getDig().split(";")));
-            dig.add(files.getCreatetime());
-            String[] dig1=new String[dig.size()];
-            dig.toArray(dig1);
-            for(int i=0;i<dig1.length;i++)
-            System.out.println("正确签名和时间戳"+dig1[i]);
-            //生成AES密钥
-            String aesPassword =AESmiyao.getKey();
-            //AES加密
-            String encryContent= AES1.encryptAES(files.getDig().split(";")[2],aesPassword);
-            //对称加密后的签名
-            dig1[2]=encryContent;
-            for(int i=0;i<dig1.length;i++)
-            System.out.println("加密摘要的签名和时间戳"+dig1[i]);
-            //发送RSA
-            System.out.println(Arrays.toString(dig1));
-            String rsaMsg=new String();
-            for(int i=0;i<dig1.length;i++){
-                rsaMsg+=dig1[i];
-                rsaMsg+=";";
-            }
-            byte[] rsaEn=RSAEncrypt.RSAen(rsaMsg.substring(0,rsaMsg.length()-1));
-            //RSA解密
-            String rsaDe=RSAEncrypt.RSAde(rsaEn);
+
 
 
 
@@ -123,8 +92,7 @@ public class FileDealController {
             }
             // 处理文件名
             String realname = fileName.substring(fileName.indexOf("_") + 1);
-            // 设置响应头，控制浏览器下载该文件
-           // response.setContentType("image/png");
+
             response.setHeader("Content-Disposition", "attachment;filename="
                     + URLEncoder.encode(realname, "UTF-8"));
             // 读取要下载的文件，保存到文件输入流
@@ -150,4 +118,55 @@ public class FileDealController {
         }
     }
 
+
+    @RequestMapping(value = "/downloadMsg")
+    public void exportKtrAndKjb(@RequestBody String fileName, HttpServletRequest request, HttpServletResponse response) throws Exception {
+        fileName = fileName.substring(0,fileName.length()-1);
+
+        //获取摘要
+        try {
+
+        QueryWrapper<Files> wrapper = new QueryWrapper<>();
+        wrapper.eq("picture_realname", fileName.split("\\.")[0]);
+        Files files = fileMapper.selectOne(wrapper);
+        System.out.println("文件对象："+files);
+        System.out.println("摘要："+files.getDig().split(";")[2]);
+
+        List<String> dig=new ArrayList<String>(Arrays.asList(files.getDig().split(";")));
+        dig.add(files.getCreatetime());
+        String[] dig1=new String[dig.size()];
+        dig.toArray(dig1);
+        for(int i=0;i<dig1.length;i++)
+            System.out.println("正确签名和时间戳"+dig1[i]);
+        //生成AES密钥
+        String aesPassword =AESmiyao.getKey();
+        //AES加密
+        String encryContent= AES1.encryptAES(files.getDig().split(";")[2],aesPassword);
+        //对称加密后的签名
+        dig1[2]=encryContent;
+        for(int i=0;i<dig1.length;i++)
+            System.out.println("加密摘要的签名和时间戳"+dig1[i]);
+        //发送RSA
+        System.out.println(Arrays.toString(dig1));
+        String rsaMsg=new String();
+        for(int i=0;i<dig1.length;i++){
+            rsaMsg+=dig1[i];
+            rsaMsg+=";";
+        }
+            System.out.println(rsaMsg.length());
+        byte[] rsaEnf=RSAEncrypt.RSAen(rsaMsg.substring(0,rsaMsg.length()/2));
+        byte[] rsaEns=RSAEncrypt.RSAen(rsaMsg.substring(rsaMsg.length()/2));
+
+        //RSA解密
+        String rsaDef=RSAEncrypt.RSAde(rsaEnf);
+        String rsaDes=RSAEncrypt.RSAde(rsaEns);
+        String recRes=rsaDef+rsaDes;
+
+       DownloadMsg.downloadByStringContent(request, response, fileName.split("\\.")[0], recRes);
+
+        }catch (Exception e) {
+            System.out.println("error");
+        }
+    }
+
 }

src/main/java/com/hao/digitalsignature/encryption/DownloadMsg.java

+package com.hao.digitalsignature.encryption;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.BufferedInputStream;
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.net.URLEncoder;
+
+public class DownloadMsg {
+
+    public static void downloadByStringContent(HttpServletRequest request,
+                                               HttpServletResponse response,
+                                               String fileName, String content)
+            throws IOException {
+        //设置向浏览器端传送的文件格式
+        response.setContentType("application/octet-stream;charset=utf-8");
+        response.setCharacterEncoding("utf-8");
+        if (request.getHeader("User-Agent").toLowerCase().indexOf("firefox") > 0) {
+            // firefox浏览器
+            fileName = new String(fileName.getBytes("UTF-8"), "ISO8859-1");
+        } else if (request.getHeader("User-Agent").toUpperCase().indexOf("MSIE") > 0) {
+            // IE浏览器
+            fileName = URLEncoder.encode(fileName, "UTF-8");
+        } else if (request.getHeader("User-Agent").toUpperCase().indexOf("CHROME") > 0) {
+            // 谷歌
+            fileName = new String(fileName.getBytes("UTF-8"), "ISO8859-1");
+        }
+        response.setHeader("Content-disposition", "attachment; filename=" + fileName);
+        BufferedInputStream inp = null;
+        OutputStream out = response.getOutputStream();
+        try {
+            inp = new BufferedInputStream(new ByteArrayInputStream(content.getBytes("utf-8")));
+            int len = 0;
+            byte[] buf = new byte[1024];
+            while ((len = inp.read(buf)) > 0) {
+                out.write(buf, 0, len);
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        } finally {
+            if (inp != null) {
+                inp.close();
+            }
+            if (out != null) {
+                out.close();
+            }
+        }
+    }
+}

src/main/resources/application.properties

 #Ȳ
 spring.devtools.restart.enabled=true
 spring.devtools.restart.additional-paths=src/main/java
-server.port=8080
+server.port=8081
 #ϴļС
 logging.logback.rollingpolicy.max-file-size=10MB
 #swagger

src/main/resources/static/index.html

@@ -224,7 +224,52 @@
 							}
 						});
 					})
+					axios.post("/file/downloadMsg",f,).then((res)=>{
+						console.log(res)
+						// var url = (window.document.location.href+"img/"+res.config.data)
+						// var a = document.createElement("a");
+						// a.download = file.picture_name;
+						// a.href = URL.createObjectURL(blob);
+						// document.body.appendChild(a)
+						// a.click();
+						// URL.revokeObjectURL(a.href) // 释放URL 对象
+						// document.body.removeChild(a)
+						// var url = (window.document.location.href+"img/"+res.config.data)
+						// var that = this
+						// var fileName = file.picture_name
+						// this.convertUrlToBase64(url).then(function (base64) {
+						// 	var blob = that.convertBase64UrlToBlob(base64); // 转为blob对象
+						// 	// 下载
+						// 	if (that.myBrowser() == "IE") {
+						// 		window.navigator.msSaveBlob(blob, fileName + ".txt");
+						// 	} else if (that.myBrowser() == "FF") {
+						// 		window.location.href = url;
+						// 	} else {
+						// 		var a = document.createElement("a");
+						// 		a.download = fileName;
+						// 		a.href = URL.createObjectURL(blob);
+						// 		document.body.appendChild(a)
+						// 		a.click();
+						// 		URL.revokeObjectURL(a.href) // 释放URL 对象
+						// 		document.body.removeChild(a)
+						// 	}
+						// });
+						this.downloadFile(res.data,file.picture_name)
+					})
+				},
+				downloadFile(data,fileName){
+					// data为blob格式
+					var blob = new Blob([data]);
+					var downloadElement = document.createElement('a');
+					var href = window.URL.createObjectURL(blob);
+					downloadElement.href = href;
+					downloadElement.download = fileName;
+					document.body.appendChild(downloadElement);
+					downloadElement.click();
+					document.body.removeChild(downloadElement);
+					window.URL.revokeObjectURL(href);
 				},
+
 				// 转换为base64
 				convertUrlToBase64(url) {
 					return new Promise(function (resolve, reject) {