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Jsp文件上传组件------实例

2011-07-10 23:00  MzXy  阅读(318)  评论(0)    收藏  举报

Jsp页面 

<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<html>
    <head>
        <title>Cos组件文件上传</title>
    </head>
    <body>
        <form action="servlet/Java" method="post"
            enctype="multipart/form-data ">
            <input type="file" name="file">
            <br>
            <input type="submit" value="上传">

        </form>
    </body>
</html>

Servlet源代码

package com.mzxy.diz;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Enumeration;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.oreilly.servlet.MultipartRequest;

public class Java extends HttpServlet {

    public Java() {
        super();
    }

    public void destroy() {
        super.destroy();
    }

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        response.setContentType("text/html");
        PrintWriter out = response.getWriter();

    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setCharacterEncoding("gbk");
        PrintWriter out = response.getWriter();
        String fileDirectory = "F://www";// 文件上传后的保存路径
        /**
         * 如果文件上传保存路径不存在则创建
         * */
        File file1 = new File(fileDirectory);
        if (!file1.exists()) {
            file1.mkdir();
        }
        int fixMax = 200 * 1024 * 1024;// 最大允许上传的文件大小以M为单位，默认为200M
        MultipartRequest multi = new MultipartRequest(request, fileDirectory,
                fixMax, "gbk");
        Enumeration enums = multi.getFileNames();
        while (enums.hasMoreElements()) {
            String fileName = (String) enums.nextElement();
            File file = multi.getFile(fileName);
            if (file != null) {
                String name = multi.getFilesystemName(fileName);
                String lastName = fileDirectory + "//" + name;
                out.print("文件已成功上传到：" + lastName);
            }
        }

    }

    public void init() throws ServletException {

    }

}