JAVA ZIP压缩打包下载

梦里梦外; 2022-08-25 12:57 305阅读 0赞

Java代码   ![收藏代码][icon_star.png]

1.  package com.kedacom.kdkk.controller.querymanager;  
2.    
3.  import java.io.File;  
4.  import java.io.FileInputStream;  
5.  import java.io.IOException;  
6.  import java.util.Date;  
7.    
8.  import javax.servlet.ServletException;  
9.  import javax.servlet.http.HttpServlet;  
10. import javax.servlet.http.HttpServletRequest;  
11. import javax.servlet.http.HttpServletResponse;  
12. import java.util.zip.\*;  
13. public class BatchDownload extends HttpServlet \{  
14.   
15.  public BatchDownload() \{  
16.   super();  
17.  \}  
18.   
19.  public void doGet(HttpServletRequest request, HttpServletResponse response)  
20.    throws ServletException, IOException \{  
21.   response.setContentType("APPLICATION/OCTET-STREAM");  
22.   response.setHeader("Content-Disposition","attachment; filename="\+this.getZipFilename());  
23.   System.out.println("in BatchDownload................");   
24.   ZipOutputStream zos = new ZipOutputStream(response.getOutputStream());     
25.      File\[\] files = new File\[2\];  
26.      files\[0\]=new File("D:/OptiCM-POC/KDKK3Project/KDKK/images/1.jpg");  
27.      files\[1\]=new File("D:/OptiCM-POC/KDKK3Project/KDKK/images/2.jpg");  
28.      zipFile(files, "", zos);     
29.      zos.flush();     
30.      zos.close();     
31.   
32.  \}  
33.  private void zipFile(File\[\] subs, String baseName, ZipOutputStream zos) throws IOException \{       
34.       for (int i=0;i<subs.length;i++) \{  
35.        File f=subs\[i\];  
36.        zos.putNextEntry(new ZipEntry(baseName + f.getName()));     
37.        FileInputStream fis = new FileInputStream(f);     
38.        byte\[\] buffer = new byte\[1024\];     
39.        int r = 0;     
40.        while ((r = fis.read(buffer)) != -1) \{     
41.            zos.write(buffer, 0, r);     
42.        \}     
43.        fis.close();   
44.       \}  
45.  \}  
46.  private String getZipFilename()\{  
47.   Date date=new Date();  
48.   String s=date.getTime()+".zip";  
49.   return s;  
50.  \}  
51.   
52.  public void doPost(HttpServletRequest request, HttpServletResponse response)  
53.    throws ServletException, IOException \{  
54.   this.doGet(request, response);  
55.  \}  
56. \}

引用

下面是web.xml里面对下载zip servlet的配置

Java代码   ![收藏代码][icon_star.png]

1.  <servlet>  
2.      <servlet-name>imgZipDownload</servlet-name>  
3.      <servlet-class>com.kedacom.kdkk.controller.querymanager.BatchDownload</servlet-class>  
4.    </servlet>  
5.    <servlet-mapping>    
6.      <servlet-name>imgZipDownload</servlet-name>  
7.      <url-pattern>/zipDownload.do</url-pattern>  
8.    </servlet-mapping>

引用

下面是页面调用servlet

Java代码   ![收藏代码][icon_star.png]

1.  <form action="zipDownload.do" method="post">  
2.              <input type="submit" value="下载"/>  
3.          </form>

[icon_star.png]: /images/20220824/afdf218bf2c54809b44839ce6f022bb0.png