spring-mvc使用ajaxFileUpload上传文件返回添加自动<per>处理

uploadHttpData : function(r, type) {
                var data = !type;
                data = type == "xml" || data ? r.responseXML : r.responseText;
                // If the type is "script", eval it in global context
                if (type == "script")
                    jQuery.globalEval(data);
                // Get the JavaScript object, if JSON is used.
                if (type == "json")
                    // eval( "data = " + data );
                    // data会被加<pre>导致AJAX不走success方法,改为如下形式
                    // eval("data = \" "+data+" \" ");
                    data = jQuery.parseJSON(data);
                // evaluate scripts within html
                if (type == "html")
                    jQuery("<div>").html(data).find('script').remove();
                return data;
            },