fileuploadservlet.java~4~

c++通信编程学习1

package com.j2ee.func.first;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;

public class FileuploadServlet extends HttpServlet {
    private static final String CONTENT_TYPE = "text/html; charset=GBK";

    //Initialize global variables
    public void init() throws ServletException {
    }

    //Process the HTTP Get request
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {

    }

    //所有来自request请求方法归类到下面方法中
 public void doService(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        HttpSession session=request.getSession();
    Fileupload fup=new Fileupload(null);

    fup.initialize(this.getServletContext(),this.getServletConfig(),request,response);
    fup.save();
    String fn=fup.getGetFilename();
    int filesize=fup.getFilesize();
    String fs=new String();
    if((filesize=filesize/1024)<1024){
        fs=filesize+"KB";
    }else if((filesize=filesize/1024)<1024){
        fs=filesize+"MB";
    }else if((filesize=filesize/1024)<1024){
        fs=filesize+"GB";
    }
    session.setAttribute("filesize",fs);
    session.setAttribute("upfile",fn);
    String desturl="./function/upload.jsp?fn="+fn;
    request.getRequestDispatcher(desturl).forward(request,response);

   }
    //Clean up resources
    public void destroy() {
    }
}