Servlet多文件打包下载，servlet打包下载,Servlet代码

Servlet多文件打包下载，servlet打包下载,Servlet代码

Servlet代码

    package project;      import java.io.File;      import java.io.FileInputStream;      import java.io.IOException;      import java.util.Date;      import javax.servlet.ServletException;      import javax.servlet.http.HttpServlet;      import javax.servlet.http.HttpServletRequest;      import javax.servlet.http.HttpServletResponse;      import java.util.zip.*;      /**      * Servlet实现多文件打包下载      * @author Frank      *      */      public class Download extends HttpServlet {          /**          *           */          private static final long serialVersionUID = -1379339763454618902L;          public Download() {              super();          }          /**          * doPost提交方式          */          public void doPost(HttpServletRequest request, HttpServletResponse response)                  throws ServletException, IOException {              this.doGet(request, response);          }          /**          * doGet提交方式          */          public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {              response.setContentType("APPLICATION/OCTET-STREAM");              response.setHeader("Content-Disposition", "attachment; filename="+ this.getZipFilename());              System.out.println("in BatchDownload................");              ZipOutputStream zos = new ZipOutputStream(response.getOutputStream());              File[] files = new File[3];              /*这里可以根据前台进行赋值,我这样做事为了快速做测试而已 */              files[0] = new File("F:/1111.png");              files[1] = new File("F:/11.png");              files[2] = new File("D:/testduo");              for(File f:files){                  zipFile(f, "", zos);              }              zos.flush();              zos.close();          }          /**          * 使用递归进行文件夹,文件的扫描          */          private void zipFile(File subs, String baseName, ZipOutputStream zos)throws IOException {              if(subs.exists()){                  if(subs.isFile()){                      zos.putNextEntry(new ZipEntry(baseName + subs.getName()));                      FileInputStream fis = new FileInputStream(subs);                      byte[] buffer = new byte[1024];                      int r = 0;                      while ((r = fis.read(buffer)) != -1) {                          zos.write(buffer, 0, r);                      }                      fis.close();                  }else{                      //如果是目录。递归查找里面的文件                      String dirName = baseName + subs.getName() + "/";                      zos.putNextEntry(new ZipEntry(dirName));                      File[] sub = subs.listFiles();                      for (File f : sub) {                          zipFile(f, dirName, zos);                      }                  }              }          }          /**          * 获取zip文件名          * @return          */          private String getZipFilename() {              Date date = new Date();              String s = date.getTime() + ".zip";              return s;          }      }  

Web.xml配置```xml <?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<servlet>
<servlet-name>Down</servlet-name>
<servlet-class>project.Download</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Down</servlet-name>
<url-pattern>/scripts/Down</url-pattern>
</servlet-mapping>

   <welcome-file-list>          <welcome-file>/login.jsp</welcome-file>     </welcome-file-list>   </web-app>

```