【ServletFileUpLoad】上传本地文件到服务器

   

    

     

      

     
     

      

       package test23_2;
      
     
    

     

      

     
     

      
 
      
     
    

     

      

     
     

      

       import java.io.File;
      
     
    

     

      

     
     

      

       import java.io.IOException;
      
     
    

     

      

     
     

      

       import java.io.PrintWriter;
      
     
    

     

      

     
     

      

       import java.util.List;
      
     
    

     

      

     
     

      

       import java.util.UUID;
      
     
    

     

      

     
     

      
 
      
     
    

     

      

     
     

      

       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.FileUploadException;
      
     
    

     

      

     
     

      

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

     

      

     
     

      

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

     

      

     
     

      

       import org.apache.commons.io.FileUtils;
      
     
    

     

      

     
     

      

       /*
      
     
    

     

      

     
     

      

        * 实现基本上传并对文件进行UUID重命名
      
     
    

     

      

     
     

      

        */
      
     
    

     

      

     
     

      

       public class UploadServlet2 extends HttpServlet {
      
     
    

     

      

     
     

      
 
      
     
    

     

      

     
     

      
	
      
     
    

     

      

     
     

      
	public void doPost(HttpServletRequest request, HttpServletResponse response)
      
     
    

     

      

     
     

      
			throws ServletException, IOException {
      
     
    

     

      

     
     

      

       		request.setCharacterEncoding("UTF-8");
      
     
    

     

      

     
     

      

       		response.setContentType("text/html;charset=utf-8");
      
     
    

     

      

     
     

      
		PrintWriter out = response.getWriter();
      
     
    

     

      

     
     

      
		
      
     
    

     

      

     
     

      
		//1、设置临时上传的路径
      
     
    

     

      

     
     

      
				DiskFileItemFactory disk = 
      
     
    

     

      

     
     

      
						new DiskFileItemFactory(10240,new File("e:disk"));
      
     
    

     

      

     
     

      
				//2、设置文件上传的目标路径
      
     
    

     

      

     
     

      
				String servePath = getServletContext().getRealPath("/serviceDisk");
      
     
    

     

      

     
     

      

       				System.out.println(servePath+"-------------------------");
      
     
    

     

      

     
     

      
				
      
     
    

     

      

     
     

      
				//3、申明upload
      
     
    

     

      

     
     

      
				ServletFileUpload up = new ServletFileUpload(disk);
      
     
    

     

      

     
     

      
				//4、解析request
      
     
    

     

      

     
     

      
				try {
      
     
    

     

      

     
     

      

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

     

      

     
     

      
					for(FileItem file:list){
      
     
    

     

      

     
     

      
						if(!file.isFormField()){
      
     
    

     

      

     
     

      
							//获取上传文件的名字
      
     
    

     

      

     
     

      
							String fileName = file.getName();
      
     
    

     

      

     
     

      

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

     

      

     
     

      
							//获取上传文件的后缀
      
     
    

     

      

     
     

      
							String extName = fileName.substring(fileName.lastIndexOf("."));
      
     
    

     

      

     
     

      
							//申明UUID
      
     
    

     

      

     
     

      
							String uuid = UUID.randomUUID().toString().replace("-", "");
      
     
    

     

      

     
     

      
							//组成新的名称
      
     
    

     

      

     
     

      
							String newName = uuid+extName;
      
     
    

     

      

     
     

      
							//上传文件
      
     
    

     

      

     
     

      

       							FileUtils.copyInputStreamToFile(file.getInputStream(),
      
     
    

     

      

     
     

      
									new File(servePath+"/"+newName));
      
     
    

     

      

     
     

      
							//封装
      
     
    

     

      

     
     

      

       							request.setAttribute("newName", newName);
      
     
    

     

      

     
     

      

       							request.setAttribute("oldName", fileName);
      
     
    

     

      

     
     

      

       						}
      
     
    

     

      

     
     

      

       					}
      
     
    

     

      

     
     

      
					//转发
      
     
    

     

      

     
     

      

       					request.getRequestDispatcher("jsps/show2.jsp").forward(request, response);
      
     
    

     

      

     
     

      

       				} catch (FileUploadException e) {
      
     
    

     

      

     
     

      
					// TODO Auto-generated catch block
      
     
    

     

      

     
     

      
					new RuntimeException();
      
     
    

     

      

     
     

      

       				}
      
     
    

     

      

     
     

      

       	}
      
     
    

     

      

     
     

      
 
      
     
    

     

      

     
     

      

       }
      
     
   
  

   

    

     

      

     
     

      

       <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
      
     
    

     

      

     
     

      

       <%
      
     
    

     

      

     
     

      

       String path = request.getContextPath();
      
     
    

     

      

     
     

      

       String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
      
     
    

     

      

     
     

      

       %>
      
     
    

     

      

     
     

      
 
      
     
    

     

      

     
     

      

       <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
      
     
    

     

      

     
     

      

       <html>
      
     
    

     

      

     
     

      
  <head>
      
     
    

     

      

     
     

      
    <base href="<%=basePath%>">
      
     
    

     

      

     
     

      
    
      
     
    

     

      

     
     

      
    <title>My JSP 'upload2.jsp' starting page</title>
      
     
    

     

      

     
     

      
    
      
     
    

     

      

     
     

      
	<meta http-equiv="pragma" content="no-cache">
      
     
    

     

      

     
     

      
	<meta http-equiv="cache-control" content="no-cache">
      
     
    

     

      

     
     

      
	<meta http-equiv="expires" content="0">    
      
     
    

     

      

     
     

      
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
      
     
    

     

      

     
     

      
	<meta http-equiv="description" content="This is my page">
      
     
    

     

      

     
     

      
	<!--
      
     
    

     

      

     
     

      

        <link rel="stylesheet" type="text/css" href="styles.css">
      
     
    

     

      

     
     

      

        -->
      
     
    

     

      

     
     

      
 
      
     
    

     

      

     
     

      
  </head>
      
     
    

     

      

     
     

      
  
      
     
    

     

      

     
     

      
  <body>
      
     
    

     

      

     
     

      
    <p>上传文件，重命名<p/> <br>
      
     
    

     

      

     
     

      
    <form action="UploadServlet2" method="post" enctype="multipart/form-data">
      
     
    

     

      

     
     

      

           上传图片<input type="file" name="imgs"/></br>
      
     
    

     

      

     
     

      

           图片说明<input type="text" name="node"/></br>
      
     
    

     

      

     
     

      
    <input type="submit" value="上传"/></br>
      
     
    

     

      

     
     

      
    
      
     
    

     

      

     
     

      
    </form>
      
     
    

     

      

     
     

      
  </body>
      
     
    

     

      

     
     

      

       </html>
      
     
   
  

   

    

     

      

     
     

      

       <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
      
     
    

     

      

     
     

      

       <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>>
      
     
    

     

      

     
     

      

       <%
      
     
    

     

      

     
     

      

       String path = request.getContextPath();
      
     
    

     

      

     
     

      

       String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
      
     
    

     

      

     
     

      

       %>
      
     
    

     

      

     
     

      
 
      
     
    

     

      

     
     

      

       <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
      
     
    

     

      

     
     

      

       <html>
      
     
    

     

      

     
     

      
  <head>
      
     
    

     

      

     
     

      
    <base href="<%=basePath%>">
      
     
    

     

      

     
     

      
    
      
     
    

     

      

     
     

      
    <title>My JSP 'show2.jsp' starting page</title>
      
     
    

     

      

     
     

      
    
      
     
    

     

      

     
     

      
	<meta http-equiv="pragma" content="no-cache">
      
     
    

     

      

     
     

      
	<meta http-equiv="cache-control" content="no-cache">
      
     
    

     

      

     
     

      
	<meta http-equiv="expires" content="0">    
      
     
    

     

      

     
     

      
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
      
     
    

     

      

     
     

      
	<meta http-equiv="description" content="This is my page">
      
     
    

     

      

     
     

      
	<!--
      
     
    

     

      

     
     

      

        <link rel="stylesheet" type="text/css" href="styles.css">
      
     
    

     

      

     
     

      

        -->
      
     
    

     

      

     
     

      
 
      
     
    

     

      

     
     

      
  </head>
      
     
    

     

      

     
     

      
  
      
     
    

     

      

     
     

      
  <body>
      
     
    

     

      

     
     

      

          	上传文件重命名UUID <br>
      
     
    

     

      

     
     

      

          	文件新名称 ${newName}</br>
      
     
    

     

      

     
     

      

          	文件上传名称 ${oldName}</br>
      
     
    

     

      

     
     

      
   	<img src="<c:url value='/serviceDisk/${newName}'/>"/>
      
     
    

     

      

     
     

      
  </body>
      
     
    

     

      

     
     

      

       </html>