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package com.starry.work;import java.io.File;import java.io.IOException;import java.util.Collection;import javax.servlet.ServletException;import javax.servlet.annotation.MultipartConfig;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.Part;/** * Servlet implementation class Upload */@WebServlet("/Upload")@MultipartConfig//一定要写这个注释   不写这个注释 不成功public class Upload extends HttpServlet {	private static final long serialVersionUID = 1L;           /**     * @see HttpServlet#HttpServlet()     */    public Upload() {        super();        // TODO Auto-generated constructor stub    }	/**	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)	 */	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {		//先创建一个文件夹，用来存放上传的文件		String filedPath="D:"+File.separator+"file_upload"+File.separator+"img";		File file=new File(filedPath);		if(!file.exists()) {			file.mkdirs();//创建文件夹，如果file_upload不存在，就创建文件夹			//file.mkdir();//创建文件夹，如果file_upload不存在，img就不会创建成功		}		//创建一个part对象		Collection
   
     parts=request.getParts();		for (Part part : parts) {			String headerInfo= part.getHeader("content-disposition");		 String name=getFileName(headerInfo, part);		 if(name.equals("")) {			 continue;		 }		 part.write(filedPath+File.separator+name);		}					}	/**	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)	 */	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {		// TODO Auto-generated method stub		doGet(request, response);	}		public String getFileName(String headerInfo,Part part) {		String fileName[]=headerInfo.split(";");		String name="";		if(fileName.length==3) {			name=part.getSubmittedFileName();			}		return name;	}}
   

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