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springMVC+jsp+ajax上传文件

2024-08-17 20:28:41   224人阅读

工作中遇到的小问题，做个笔记

实现springMVC + jsp + ajax 上传文件

HTML

<body>
   <form id="myform"  method="post" >
       登录名<input type="text" name="loginName" />
       <br>
      上传录音<input type="file" name="record" />
      <input type="button" onclick="doUpload()" value="提交" />
   </form> 
</body>

javascript

 function doUpload() {  
      var formData = http://www.mamicode.com/new FormData($( "#myform" )[0]);  
      $.ajax({  
           url: ‘insert/fileupload.action‘ ,  
           type: ‘POST‘,  
           data: formData,  
           async: false,  
           cache: false,  
           contentType: false,  
           processData: false,  
           success: function (returndata) {  
               alert(returndata);  
           },  
           error: function (returndata) {  
               alert(returndata);  
           }  
      });  
 }

springMVC.xml

   <!-- 配置文件上传解析器 -->  
     <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  
        <property name="defaultEncoding" value="utf-8"/>  
        <property name="maxUploadSize" value="10485760000"/>  
        <property name="maxInMemorySize" value="40960"/>  
     </bean>

java

RequestMapping("fileupload")
 public void fileupload(HttpServletRequest request,HttpServletResponse response,String loginName) throws Exception {
     //获取服务器中保存文件的路径
  String path = request.getSession().getServletContext().getRealPath("")+"\\upload\\record\\";
  System.out.println(path);
   //获取解析器  
     CommonsMultipartResolver resolver = new CommonsMultipartResolver(request.getSession().getServletContext());  
     //判断是否是文件  
     if(resolver.isMultipart(request)){  
         //进行转换  
         MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest)(request);  
         //获取所有文件名称  
         Iterator<String> it = multiRequest.getFileNames();  
         while(it.hasNext()){  
             //根据文件名称取文件  
             MultipartFile file = multiRequest.getFile(it.next());  
             String fileName = file.getOriginalFilename();  
             String localPath = path + fileName;  
             //创建一个新的文件对象，创建时需要一个参数，参数是文件所需要保存的位置
             File newFile = new File(localPath);  
             //上传的文件写入到指定的文件中  
             file.transferTo(newFile);  
         }  
     }

 

springMVC+jsp+ajax上传文件


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