第一步：导入commons-fileupload-1.3.1.jar 和commons-io-2.2.jar 架包

第二步：在applicationContext.xml中 配置

<bean id=”multipartResolver” class=”org.springframework.web.multipart.commons.CommonsMultipartResolver”/>

第三步：在页面 <form>标签添加属性enctype=”multipart/form-data” 这个是上传文件必须的

具体一个简单方法如下

 1.web.xml

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        index.jsp
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       14           
       
        dispatcherServlet
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        org.springframework.web.servlet.DispatcherServlet
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        18             
        
         contextConfigLocation
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         /WEB-INF/shopping-servlet.xml
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        1
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      23    
      
       24           
       
        dispatcherServlet
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        /
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2.shopping-servlet.xml

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      18 19     
      
       21           
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      25 26 27     
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       29         
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      32 33     34 35 
     

3.controller

1 @RequestMapping(value="/upload1", method=RequestMethod.POST) 2     public String upload1(@RequestParam(value = "file", required = false) MultipartFile file, 3             HttpServletRequest request){ 4          5         String fileName = file.getOriginalFilename(); 6         System.out.println(fileName); 7          8         //获取扩展名 9         String extension = fileName.substring(fileName.lastIndexOf("."));10         11         //新的文件名    234-135234532l34kjlkj.jpg12         String savedFileName = java.util.UUID.randomUUID().toString() + extension;13         14         String folderPath = request.getRealPath("/WEB-INF/upload");15         16         File savedFile = new File(folderPath, savedFileName);17         18         19         //保存文件20         try {21             file.transferTo(savedFile);22         } catch (IOException e) {23             e.printStackTrace();24         }25         26         return "upload1";27     }