ajax提交文件

formdata获取文件对象

var formData = new FormData($( "#uploadForm" )[0]);  <td>version</td> </tr>";

         $.ajax({  
              url: '/test/upload.do?format=json' ,  
              type: 'POST',  
              data: formData,  
              async: false,  
              cache: false,  
              contentType: false,  
              processData: false,  
              dataType : 'json',    
              success: function (result) {
                  var alist = result.list;
                 
              },  
              error: function (returndata) {  
                  alert(returndata);  
              }  
         });