ie下ajaxSubmit提交form中包含file时，提示下载（后台采用struts2）

 1 var validateForm = function() {
 2             var flag = true;
 3             if (window.ActiveXObject) {
 4                 IE下的处理……修改flag11             } else if (window.MessageEvent && !document.getBoxObjectFor) {
12                非IE下的处理……修改flag21             }
22             return flag;
23         };

1 var showResponse = function(data, status) {
2             data = jQuery.parseJSON(data);
3             响应后的处理……
4             
5         };

1 var options = {
2             url : window.contextPath + "/********.action",
3 //            dataType : "text",
4             beforeSubmit : validateForm,
5             success : showResponse,
6             resetForm : true
7         };
8         $(‘#form的ID‘).ajaxSubmit(options);
9     }

1         <action name="*******" class="myClass"
2             method="*******">
3             <result name="success" type="json">
4                 <param name="contentType">text/html</param>
5                 <param name="ignoreHierarchy">false</param>
6                 <param name="includeProperties">success,message</param>
7             </result>
8         </action>