并没有提示try,catch

package com.imoo.servlet;

import java.io.IOException;

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 org.apache.tomcat.util.http.fileupload.FileItem;

import org.apache.tomcat.util.http.fileupload.disk.DiskFileItemFactory;

import org.apache.tomcat.util.http.fileupload.servlet.ServletFileUpload;

/**

 * 用户注册的Servlet

 */

@WebServlet("/RegistServlet")

public class RegistServlet extends HttpServlet {

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

//数据接收，只能用fileupload里对应的API了

//文件上传基本操作

//1.创建一个磁盘文件项工厂对象

DiskFileItemFactory disFileItemFactory=new DiskFileItemFactory();

//2.创建一个核心解析类；去解析浏览器发送来的请求的

//因为跟传统的方式不一样了

ServletFileUpload servletFileUpload=new ServletFileUpload(disFileItemFactory);

//3.解析request请求，返回的是List集合，List集合中存放的是FileItem对象

//表单里有很多的表单项(username,password...)，

//那么，解析出来就是一个fileItem对象

List<FileItem>list =servletFileUpload.parseRequest(request);

//4.遍历集合，获得每个FileItem,判断是表单项还是文件上传项

}

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

// TODO Auto-generated method stub

doGet(request, response);

}

}