src/com/my/scientific/action/DownLoadServlet.java

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package com.my.scientific.action;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class DownLoadServlet
 */
public class DownLoadServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public DownLoadServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		try
		  {
		   String inputPath=request.getParameter("inputPath");
		   String fileName=request.getParameter("fileName");
		   response.setContentType("application/zip");
		         response.setHeader("Content-Disposition", "attachment; filename=" + fileName);
		         OutputStream outputStream = response.getOutputStream();
		         InputStream inputStream = new FileInputStream(inputPath);
		         byte[] buffer = new byte[1024];
		         int i = -1;
		         while ((i = inputStream.read(buffer)) != -1) {
		          outputStream.write(buffer, 0, i);
		         }
		         outputStream.flush();
		         outputStream.close();
		  }catch(FileNotFoundException e1)
		  {
		   System.out.println("没有找到您要的文件");
		  }
		  catch(Exception e)
		  {
		   System.out.println("系统错误，请及时与管理员联系");
		  }
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {