ajax在当地运行正常，IIS发布后返回值是Object，求高手解答

ajax在本地运行正常，IIS发布后返回值是Object，求高手解答

function secondLoadAjax(allTime){

         $.ajax({

                 url:”SearchSecondInfo”,

                  datatype:”json”,

                  data:”startTime=” + allTime,

                   success:function(sucText){

                    $(“#ProjectTwiceSearchTable”).empty();

                    $(“#ProjectTwiceSearchTable”).append(“<tr bgcolor=’#F1F1EF’><td width=’11%’ rowspan=’2′>&nbsp;</td><td width=’20%’ rowspan=’2′ align=’center’ bgcolor=’#F1F1EF’>二手房面积<br />(平方米)</td><td colspan=’2′ align=’center’ bgcolor=’#F1F1EF’>其中：二手住宅&nbsp; </td><td width=’20%’ rowspan=’2′ align=’center’ bgcolor=’#F1F1EF’>二手住宅平均每套面积<br />(平方米/套)</td></tr><tr bgcolor=’#F1F1EF’><td width=’13%’ align=’center’ bgcolor=’#F1F1EF’>套数(套)</td><td width=’20%’ align=’center’ bgcolor=’#F1F1EF’>面积(平方米)</td></tr>”);

                    

                    var json = eval(“(“+sucText+”)”);

                    if(json.length <= 0){

                       $(“#ProjectTwiceSearchTable”).append(“<tr><td colspan=’5′>暂无数据</td></tr>”);

                    }else{

                     for(var i = 0;i < json.length; i++){

                        $(“#ProjectTwiceSearchTable”).append(“<tr bgcolor=’#FFFFFF’><td align=’center’ bgcolor=’#FFFFFF’>”+json[i].District+”</td><td align=’center’ bgcolor=’#FFFFFF’>”+json[i].CommodityArea+”</td> <td align=’center’ bgcolor=’#FFFFFF’>”+json[i].HouseCount+”</td><td align=’center’ bgcolor=’#FFFFFF’>”+json[i].HouseArea+”</td> <td>”+json[i].HouseAvg+”</td>”); 

                       }

                    }

                   },

                   error:function(errorText){