jsupload实现js上传文件，并显示文件上传进度

jsupload实现js上传文件，并显示文件上传进度

package com.sohu.action;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.ProgressListener;
import org.apache.commons.fileupload.FileUploadbase.SizeLimitExceededException;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

/**
 * Servlet implementation class Upload
 */
@WebServlet（“/Upload“）
public class Upload extends HttpServlet {
	private static final long serialVersionUID = 1L;

    /**
     * Default constructor. 
     */   
    public Upload（） {
        // TODO Auto-generated constructor stub
    	super（）;
    }
  
	/**
	 * @see HttpServlet#doGet（HttpServletRequest request HttpServletResponse response）
	 */
	protected void doGet（HttpServletRequest request HttpServletResponse response） throws ServletException IOException {
		doPost（request response）;
	}

	/**
	 * @see HttpServlet#doPost（HttpServletRequest request HttpServletResponse response）
	 */
	protected void doPost（HttpServletRequest request HttpServletResponse response） throws ServletException IOException {
		response.setContentType（“text/html“）;
		//设置字符编码为UTF-8，支持汉字显示
		response.setCharacterEncoding（“UTF-8“）;
		final long MAX_SIZE = 1024 * 1024 * 1024;//设置上传文件最大为1G
		
		//上传文件路径
		String filePath = “e:\\upload\\“;
		String tempPath = “e:\\upload\\temp\\“;
		
		//jsonp上传
		String jsonp = request.getParameter（“callback“）;
		
		// 实例化一个硬盘文件工厂用来配置上传组件ServletFileUpload
		DiskFileItemFactory dfif = new DiskFileItemFactory（）;
		dfif.setSizeThreshold（1024 * 5）;// 设置上传文件时用于临时存放文件的内存大小这里是5k.多于的部分将临时存在硬盘
		dfif.setRepository（new File（tempPath））;// 设置存放临时文件的目录

		//用以上工厂实例化上传组件
		ServletFileUpload sfu = new ServletFileUpload（dfif）;
		//设置最大上传尺寸
		sfu.setSizeMax（MAX_SIZE）;

		PrintWriter out = response.getWriter（）;
		final HttpSession session = request.getSession（）;
		
		sfu.setProgressListener（new ProgressListener（） {
			private long temp = -1;
		    public void update（long readBytes long totalBytes int item） {
				long size = readBytes / 1024 * 1024 * 10;
				if（temp == size）{
					return;
				}
				temp = size;
				if （readBytes != -1） {
					session.setAttribute（“readBytes“ ““ + readBytes）;
				    session.setAttribute（“totalBytes“ ““ + totalBytes）;
				}
		    }
		}）;
		
		//从request得到 所有 上传域的列表
		List fileList = null;
		try {
			fileList = sfu.parseRequest（request）;
		} catch （FileUploadException e） {//处理文件尺寸过大异常
			if （e instanceof SizeLimitE

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2012-01-30 16:15  jsupload\
     文件         601  2012-01-30 09:17  jsupload\.classpath
     文件        1041  2012-01-29 18:32  jsupload\.project
     目录           0  2012-01-30 16:15  jsupload\.settings\
     文件         503  2012-01-29 18:32  jsupload\.settings\.jsdtscope
     文件         395  2012-01-29 18:32  jsupload\.settings\org.eclipse.jdt.core.prefs
     文件         454  2012-01-29 18:32  jsupload\.settings\org.eclipse.wst.common.component
     文件         305  2012-01-29 18:32  jsupload\.settings\org.eclipse.wst.common.project.facet.core.xml
     文件          49  2012-01-29 18:32  jsupload\.settings\org.eclipse.wst.jsdt.ui.superType.container
     文件           6  2012-01-29 18:32  jsupload\.settings\org.eclipse.wst.jsdt.ui.superType.name
     目录           0  2012-01-30 16:15  jsupload\src\
     目录           0  2012-01-30 16:15  jsupload\src\com\
     目录           0  2012-01-30 16:15  jsupload\src\com\sohu\
     目录           0  2012-01-30 16:15  jsupload\src\com\sohu\action\
     文件        6414  2012-01-29 17:48  jsupload\src\com\sohu\action\Upload.java
     文件        2839  2012-01-20 16:48  jsupload\src\com\sohu\action\UploadFileMessage.java
     文件        1578  2012-01-29 17:00  jsupload\src\com\sohu\action\UploadProgress.java
     目录           0  2012-01-30 16:15  jsupload\WebContent\
     目录           0  2012-01-30 16:15  jsupload\WebContent\meta-INF\
     文件          39  2012-01-29 18:32  jsupload\WebContent\meta-INF\MANIFEST.MF
     目录           0  2012-01-30 16:15  jsupload\WebContent\page\
     目录           0  2012-01-30 16:15  jsupload\WebContent\page\script\
     文件       10511  2012-01-30 15:20  jsupload\WebContent\page\script\jsupload.js
     文件        6505  2012-01-30 14:27  jsupload\WebContent\page\upload.jsp
     目录           0  2012-01-30 16:15  jsupload\WebContent\WEB-INF\
     目录           0  2012-01-30 16:15  jsupload\WebContent\WEB-INF\classes\
     目录           0  2012-01-30 16:15  jsupload\WebContent\WEB-INF\classes\com\
     目录           0  2012-01-30 16:15  jsupload\WebContent\WEB-INF\classes\com\sohu\
     目录           0  2012-01-30 16:15  jsupload\WebContent\WEB-INF\classes\com\sohu\action\
     文件        1325  2012-01-30 09:19  jsupload\WebContent\WEB-INF\classes\com\sohu\action\Upload$1.class
     文件        5702  2012-01-30 09:19  jsupload\WebContent\WEB-INF\classes\com\sohu\action\Upload.class
............此处省略7个文件信息