SpringMVC上传文件

　　1，导入上传文件所需jar包（若无此jar包，上篇文章的地址可下载）

　　2，配置spring-config.xml

1 <!-- 支持上传文件 --> 
2     <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> 
3              <!-- 设置上传文件的最大尺寸为5MB --> 
4             <property name="maxUploadSize"> 
5                  <value>5242880</value> 
6             </property>
7     </bean>

　　3，新建上传文件页面 upload.jsp

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10     <!-- action="/项目名/类 Controller 注解映射请求路径..." -->
11     <form action="/erp_App/spingmvc/uploadFile.do" method="post" enctype="multipart/form-data">
12         选择文件:<input type="file" name="file"/>
13         <input type="submit" value="上传"/>
14     </form>
15 </body>
16 </html>

　　4，上传成功的页面 success.jsp

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10 　　上传成功
11 </body>
12 </html>

　　5，上传文件的Controller

 1 package com.st.test.controller;
 2 
 3 import java.io.FileNotFoundException;
 4 import java.io.FileOutputStream;
 5 import java.io.IOException;
 6 import java.io.InputStream;
 7 import java.util.Date;
 8 
 9 import javax.servlet.ServletException;
10 import javax.servlet.http.HttpServletRequest;
11 
12 import org.springframework.stereotype.Controller;
13 import org.springframework.web.bind.annotation.RequestMapping;
14 import org.springframework.web.bind.annotation.RequestParam;
15 import org.springframework.web.multipart.commons.CommonsMultipartFile;
16 
17 @Controller
18 @RequestMapping("/spingmvc")
19 public class UploadFileController {
20 
21     @RequestMapping("/uploadFile")
22     public String uploadFile(@RequestParam("file") CommonsMultipartFile file,HttpServletRequest request) 
　　　　　　　　　　　　　　　　throws IOException, ServletException{
23         
24         //打印上传文件名
25         System.out.println("fileName..."+file.getOriginalFilename());
26         //判断文件上传是否为空
27         //若上传文件不为空
28         if(!file.isEmpty()){
29             try {
30                 //输出流(文件上传保存的路径)
31                 FileOutputStream os = new FileOutputStream("D:/"+new Date().getTime()+file.getOriginalFilename());
32                 //输入流
33                 InputStream in = file.getInputStream();
34                 //读取文件
35                 //定义一个读取文件的变量
36                 int b=0;
37                 while((b=in.read()) != -1){
38                     os.write(b);
39                 }
40                 os.flush();
41                 os.close();
42                 in.close();
43             } catch (FileNotFoundException e) {
44                 e.printStackTrace();
45             }
46         }
　　　　　　//上传成功后跳转的页面
47         return "/test/success.jsp";
48     }
49 }