jsp\struts1.2\struts2 中文件上传（转）

jsp\struts1.2\struts2 中文件上传

a.在jsp中简单利用Commons-fileupload组件实现
b.在struts1.2中实现
c.在sturts2中实现
现在把Code与大家分享一下..
注:此为三个简单Demo,仅供练习用,并没有做太多上传限制
如有兴趣可以自行查看相关文档说明

一.在JSP环境中利用Commons-fileupload组件实现文件上传
1.页面upload.jsp清单如下:

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

<title>The FileUpload Demo</title>

</head>

<body>

<form action="UploadFile" method="post" enctype="multipart/form-data">

<p><input type="text" name="fileinfo" value="">文件介绍</p>

<p><input type="file" name="myfile" value="浏览文件"></p>

<p><input type="submit" value="上传"></p>

</form>

</body>

</html>

　　注意:在上传表单中,既有普通文本域也有文件上传域

2.FileUplaodServlet.java清单如下:

package org.chris.fileupload;

import java.io.File;

import java.io.IOException;

import java.util.Iterator;

import java.util.List;

import javax.servlet.ServletException;

import javax.servlet.http.*;

import org.apache.commons.fileupload.FileItem;

import org.apache.commons.fileupload.FileItemFactory;

import org.apache.commons.fileupload.disk.DiskFileItemFactory;

import org.apache.commons.fileupload.servlet.ServletFileUpload;

public class FileUplaodServlet extends HttpServlet {

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

doPost(request, response);

}

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

request.setCharacterEncoding("UTF-8");

//文件的上传部分

boolean isMultipart = ServletFileUpload.isMultipartContent(request);

if(isMultipart)

{

try {

FileItemFactory factory = new DiskFileItemFactory();

ServletFileUpload fileload = new ServletFileUpload(factory);

// 设置最大文件尺寸，这里是4MB

fileload.setSizeMax(4194304);

List<FileItem> files = fileload.parseRequest(request);

Iterator<FileItem> iterator = files.iterator();

while(iterator.hasNext())

{

FileItem item = iterator.next();

if(item.isFormField())

{

String name = item.getFieldName();

String value = item.getString();

System.out.println("表单域名为: " + name + "值为: " + value);

}else

{

//获得获得文件名，此文件名包括路径

String filename = item.getName();

if(filename != null)

{

File file = new File(filename);

//如果此文件存在

if(file.exists()){

File filetoserver = new File("d:\\upload\\",file.getName());

item.write(filetoserver);

System.out.println("文件 " + filetoserver.getName() + " 上传成功!!");

}

} catch (Exception e) {

System.out.println(e.getStackTrace());

}

　　3.web.xml清单如下: