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=============commons-fileupload ================
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package com.drp.util.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.*;
import java.util.*;
import java.util.regex.*;
import java.io.*;
import org.apache.commons.fileupload.servlet.*;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
public class FileUpload extends HttpServlet {
private String uploadPath = ""; // ÓÃÓÚ´æ·ÅÉÏ´«ÎļþµÄĿ¼
private File tempPath = new File("D:\\Tomcat 5.5\\webapps\\drp1.2\\tempimages\\"); // ÓÃÓÚ´æ·ÅÁÙʱÎļþµÄĿ¼
public void doPost(HttpServletRequest req, HttpServletResponse res)
    throws ServletException, IOException {
   res.setContentType("text/html; charset=GB18030");
   PrintWriter out = res.getWriter();
   System.out.println(req.getContentLength());
   System.out.println(req.getContentType());
   DiskFileItemFactory factory = new DiskFileItemFactory();
   // maximum size that will be stored in memory
  //ÔÊÐíÉèÖÃÄÚ´æÖд洢Êý¾ÝµÄÃÅÏÞ£¬µ¥Î»£º×Ö½Ú
   factory.setSizeThreshold(4096);
   // the location for saving data that is larger than getSizeThreshold()
//Èç¹ûÎļþ´óС´óÓÚSizeThreshold£¬Ôò±£´æµ½ÁÙʱĿ¼
   factory.setRepository(new File("D:\\Tomcat 5.5\\webapps\\drp1.2\\tempimages"));
   ServletFileUploa