在eclipse使用commons.uploadfile时提示"The type DiskFileUpload is deprecated"，请问这是为什么

[rynewood]

在eclipse使用commons.uploadfile时，语句"DiskFileUpload fu = new DiskFileUpload ();"
上被画了横线，并提示“The type DiskFileUpload is deprecated”,请问这是为什么？
package com.upload;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.*;
import javax.servlet.http.*;

import org.apache.commons.fileupload.*;
import org.apache.commons.io.*;



public class Upload extends HttpServlet {

/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

try{

DiskFileUpload fu = new DiskFileUpload ();

}
catch(Exception e){

}
}

/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occure
*/
public void init() throws ServletException {
// Put your code here
}

}

[Camelh]

DiskFileUpload 说明这个类过时了，在以后的新版本中可能被取消掉，最好不要用过时的类或者方法；查一查文档看用什么新类替代了，直接使用那个替代类

[Cuealive]

DiskFileItemFactory

[LoddChen]

DiskFileItemFactory和ServletFileUpload两个类一起替代过时的DiskFileUpload类.
javadoc里有提到这一点