JAVA ZIP压缩打包下载

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JAVA ZIP压缩打包下载

引用
java自带的类库，实现zip压缩打包文件下载(下面是我的完整下载servlet下载类代码，改下自己的包名即可使用)


Java代码

1. 1.package com.kedacom.kdkk.controller.querymanager;   
   
2. 2.  
   
3. 3.import java.io.File;   
   
4. 4.import java.io.FileInputStream;   
   
5. 5.import java.io.IOException;   
   
6. 6.import java.util.Date;   
   
7. 7.  
   
8. 8.import javax.servlet.ServletException;   
   
9. 9.import javax.servlet.http.HttpServlet;   
   
10. 10.import javax.servlet.http.HttpServletRequest;   
    
11. 11.import javax.servlet.http.HttpServletResponse;   
    
12. 12.import java.util.zip.*;   
    
13. 13.public class BatchDownload extends HttpServlet {   
    
14. 14.  
    
15. 15. public BatchDownload() {   
    
16. 16.  super();   
    
17. 17. }   
    
18. 18.  
    
19. 19. public void doGet(HttpServletRequest request, HttpServletResponse response)   
    
20. 20.   throws ServletException, IOException {   
    
21. 21.  response.setContentType("APPLICATION/OCTET-STREAM");   
    
22. 22.  response.setHeader("Content-Disposition","attachment; filename="+this.getZipFilename());   
    
23. 23.  System.out.println("in BatchDownload................");   
    
24. 24.  ZipOutputStream zos = new ZipOutputStream(response.getOutputStream());      
    
25. 25.     File[] files = new File[2];   
    
26. 26.     files[0]=new File("D:/OptiCM-POC/KDKK3Project/KDKK/images/1.jpg");   
    
27. 27.     files[1]=new File("D:/OptiCM-POC/KDKK3Project/KDKK/images/2.jpg");   
    
28. 28.     zipFile(files, "", zos);      
    
29. 29.     zos.flush();      
    
30. 30.     zos.close();      
    
31. 31.  
    
32. 32. }   
    
33. 33. private void zipFile(File[] subs, String baseName, ZipOutputStream zos) throws IOException {        
    
34. 34.      for (int i=0;i<subs.length;i++) {   
    
35. 35.       File f=subs[i];   
    
36. 36.       zos.putNextEntry(new ZipEntry(baseName + f.getName()));      
    
37. 37.       FileInputStream fis = new FileInputStream(f);      
    
38. 38.       byte[] buffer = new byte[1024];      
    
39. 39.       int r = 0;      
    
40. 40.       while ((r = fis.read(buffer)) != -1) {      
    
41. 41.           zos.write(buffer, 0, r);      
    
42. 42.       }      
    
43. 43.       fis.close();   
    
44. 44.      }   
    
45. 45. }   
    
46. 46. private String getZipFilename(){   
    
47. 47.  Date date=new Date();   
    
48. 48.  String s=date.getTime()+".zip";   
    
49. 49.  return s;   
    
50. 50. }   
    
51. 51.  
    
52. 52. public void doPost(HttpServletRequest request, HttpServletResponse response)   
    
53. 53.   throws ServletException, IOException {   
    
54. 54.  this.doGet(request, response);   
    
55. 55. }   
    
56. 56.}   
    
57. package com.kedacom.kdkk.controller.querymanager;
    
58. 
    
59. import java.io.File;
    
60. import java.io.FileInputStream;
    
61. import java.io.IOException;
    
62. import java.util.Date;
    
63. 
    
64. import javax.servlet.ServletException;
    
65. import javax.servlet.http.HttpServlet;
    
66. import javax.servlet.http.HttpServletRequest;
    
67. import javax.servlet.http.HttpServletResponse;
    
68. import java.util.zip.*;
    
69. public class BatchDownload extends HttpServlet {
    
70. 
    
71. public BatchDownload() {
    
72.   super();
    
73. }
    
74. 
    
75. public void doGet(HttpServletRequest request, HttpServletResponse response)
    
76.    throws ServletException, IOException {
    
77.   response.setContentType("APPLICATION/OCTET-STREAM");
    
78.   response.setHeader("Content-Disposition","attachment; filename="+this.getZipFilename());
    
79.   System.out.println("in BatchDownload................");
    
80.   ZipOutputStream zos = new ZipOutputStream(response.getOutputStream());   
    
81.      File[] files = new File[2];
    
82.      files[0]=new File("D:/OptiCM-POC/KDKK3Project/KDKK/images/1.jpg");
    
83.      files[1]=new File("D:/OptiCM-POC/KDKK3Project/KDKK/images/2.jpg");
    
84.      zipFile(files, "", zos);   
    
85.      zos.flush();   
    
86.      zos.close();   
    
87. 
    
88. }
    
89. private void zipFile(File[] subs, String baseName, ZipOutputStream zos) throws IOException {     
    
90.       for (int i=0;i<subs.length;i++) {
    
91.        File f=subs[i];
    
92.        zos.putNextEntry(new ZipEntry(baseName + f.getName()));   
    
93.        FileInputStream fis = new FileInputStream(f);   
    
94.        byte[] buffer = new byte[1024];   
    
95.        int r = 0;   
    
96.        while ((r = fis.read(buffer)) != -1) {   
    
97.            zos.write(buffer, 0, r);   
    
98.        }   
    
99.        fis.close();
    
100.       }
     
101. }
     
102. private String getZipFilename(){
     
103.   Date date=new Date();
     
104.   String s=date.getTime()+".zip";
     
105.   return s;
     
106. }
     
107. 
     
108. public void doPost(HttpServletRequest request, HttpServletResponse response)
     
109.    throws ServletException, IOException {
     
110.   this.doGet(request, response);
     
111. }
     
112. }

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引用
下面是web.xml里面对下载zip servlet的配置


Java代码

1. 1.<servlet>   
   
2. 2.    <servlet-name>imgZipDownload</servlet-name>   
   
3. 3.    <servlet-class>com.kedacom.kdkk.controller.querymanager.BatchDownload</servlet-class>   
   
4. 4.  </servlet>   
   
5. 5.  <servlet-mapping>     
   
6. 6.    <servlet-name>imgZipDownload</servlet-name>   
   
7. 7.    <url-pattern>/zipDownload.do</url-pattern>   
   
8. 8.  </servlet-mapping>  
   
9. <servlet>
   
10.     <servlet-name>imgZipDownload</servlet-name>
    
11.     <servlet-class>com.kedacom.kdkk.controller.querymanager.BatchDownload</servlet-class>
    
12.   </servlet>
    
13.   <servlet-mapping>  
    
14.     <servlet-name>imgZipDownload</servlet-name>
    
15.     <url-pattern>/zipDownload.do</url-pattern>
    
16.   </servlet-mapping>

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引用
下面是页面调用servlet


Java代码

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

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