java js-java servlet這是單個下載，怎麼打包批量下載

java servlet這是單個下載，怎麼打包批量下載

package cn.szusst.aqms.action.common;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

/**

• Servlet implementation class ServletDownload
  */
  
  @WebServlet(asyncSupported = true, urlPatterns = { "/ServletDownload" })
  
  public class ServletDownload extends HttpServlet {
  
  private static final long serialVersionUID = 1L;

  /**

  • @see HttpServlet#HttpServlet() */
    public ServletDownload() {
    super();
    // TODO Auto-generated constructor stub
    }
    

  /**

  • @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
    */
    
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
    response.setContentType("application/x-msdownload");
    // TODO Auto-generated method stub

    //獲得請求文件名
    
    String filename = request.getParameter("filename");
    
    //設置文件MIME類型

    response.setContentType(getServletContext().getMimeType(filename));
    
    //設置Content-Disposition
    
    response.setHeader("Content-Disposition", "attachment;filename="+filename);
    
    //讀取目標文件，通過response將目標文件寫到客戶端
    
    //獲取目標文件的絕對路徑
    
    // //讀取文件

    OutputStream out = response.getOutputStream();
    
    String fullFileName = filename;
    InputStream in = new FileInputStream(fullFileName);
    
    //寫文件
    
    int b;
    
    while((b=in.read())!= -1)
    
    {
    
    out.write(b);
    
    }

    in.close();
    
    // out.close();
    
    }

  /**

  • @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    // TODO Auto-generated method stub
    }
    

}

最佳回答：

這是百度上搜的呀