JS 中的ajax请求

$.ajax({ 
url : "/supportmng/pages/poapply/firstCheckerAction.do?actionFlag=addFirstChecker",  
	type: "GET",
	dataType: "json",
	data: { area_id: area_id ,location_id: location_id,first_handler: checkers},
	async:false,
	cache:false,
	success : function(data) {
			var existFlag = data.success;
			if('false' == existFlag){
				alert("<bean:message key="first.level.ChoosenDuplication"/>");
			}
             else
             {  var urls="/supportmng/pages/poapply/firstCheckerAction.do?actionFlag=getFirstCheckerAll";
			 location=urls;

			}
			},
	error : function() {
		alert('<bean:message key="sys.err.unknowerror"/>');
	}
  });

  String strJson = (new JSONObject(output)).getString("total_row");        
        if(strJson != null && !strJson.equals("0"))
          {
              result = "{\"success\":\"false\"}";
             if (null != out)
              {
              out.print(result);
              out.close();
          }