package Servlet;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.PrintWriter;

import java.util.List;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;

import org.apache.commons.fileupload.disk.DiskFileItemFactory;

import org.apache.commons.fileupload.servlet.ServletFileUpload;

public class UploadHandleServlet extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response)

            throws ServletException, IOException {

       String savepath=this.getServletContext().getRealPath("/WEB-INF/upload");

       File file=new File(savepath);

       System.out.println(savepath);

       if(!file.exists() && !file.isDirectory())

       {

           System.out.println(savepath+"目录不存在创建");

           file.mkdir();

       }      

        String message="";   

        try{

            System.out.println("1");

            DiskFileItemFactory fctory=new DiskFileItemFactory();

            ServletFileUpload fileuplaod=new ServletFileUpload(fctory);

            fileuplaod.setHeaderEncoding("UTF-8");

            if(!ServletFileUpload.isMultipartContent(request)){

                System.out.println("5");

                return;

            }

            System.out.println("6");

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

            for(FileItem item : list){

                if(item.isFormField()){

                    System.out.println("2");

                    String name=item.getFieldName();

                    String value=item.getString("UTF-8");

                    System.out.println(name+"="+value);

                }else{

                    System.out.println("3");

                    String name=item.getName();

                    System.out.println(name);

                    if(name==null||name.trim().equals("")){

                        continue;

                    }

                    name=name.substring(name.lastIndexOf("\\")+1);

                    InputStream in=item.getInputStream();

                    FileOutputStream out =new FileOutputStream(savepath+"\\"+name);

                    byte buffer[]=new byte[1024];

                    int len=0;

                    while((len=in.read(buffer))>0){

                        out.write(buffer, 0, len);;

                    }

                    System.out.println("4");

                    in.close();

                    out.close();

                    item.delete();

                    message="文件上传成功";

                }

            }

        }catch(Exception e){

            message="文件上传失败！";

            e.printStackTrace();

        }

        request.setAttribute("message", message);

        request.getRequestDispatcher("../message.jsp").forward(request, response);

    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)

            throws ServletException, IOException {

        doGet(request,response);

    }

}