jQuery ajax获取strut2.0action 返回List<Map<Object,Object>>

// struts2.0配置文件<action name="serviceTopAction" method="queryComsumer"><result name="success" type="json"><param name="root">traderList</param></result></action>// java 代码public String queryComsumer(){List<Map<Object,Object>> traderList =       serviceTopService.queryServiceTraderMap();     return SUCCESS;}    $.ajax({url : '<%=path%>/servicetop/serviceTopAction.do',//后台处理程序type : 'post',dataType : 'json',success : function(data){    $.each(data,function(key,value){    //console.info(data[key].TRADER_NAME);             //console.log(value.CRT_DATE);             $(value).each(function(){    console.log("/t" + value.CRT_DATE);});      })},error : function(){}