<Form id="test" enctype="multipart/form-data">

 <input type="file" name="Importexcelfile" value=""  id="j_custom_questionFile">

<button type="button" class="btn-default" data-icon="save" onclick="checkSubmit();">导入</button>

</Form>

var formData = new FormData($('#ImportForm')[0]);
url = '@Url.Action("ImportQuestionExcel","Common")' + "?time=" + new Date();
console.log(url);
$.ajax({
type:"POST",
url:url,
data: formData,
processData: false,
contentType: false,
success:function(data){
Import_OnSuccess(data);
},
error:function(){
$(document).alertmsg('confirm',"处理异常");
}
});

1、url 添加时间戳  

2、<meta http-equiv="X-UA-Compatible" content="IE=9;IE=8;IE=7;IE=edge"> 

以上两个都已经测试 没有作用

哪个大神解决过没？大背景 用的是BJUI框架