yii2.0加载获取后台json文件

$.getJSON('/themes/demo/json/road.json',{}, function (data) {
    console.log(data);
    map.setCenter(new AMap.LngLat(121.45444199999997,31.225875));
    heatmap.setDataSet({
        data: data,
        max:100
    });

});