      ip: ip,
                port: port,
                requestType: 'POST'
            });

            //执行查询操作，querySuccess为查询回调函数
            queryService.query(onsuccess, null);
        }

        /** 生成专题图*/
        function gradeQuerySuccess(data) {
            if (data != null) {
                themeLayer =
                    Zondy.Map.rankSymbolThemeLayer("ThemeLayer", 'Circle', { calGravity: true });
                themeLayer.themeField = "GDP2016";
     