echarts地图344个县区地理数据，百度官网已经停止下载。举例：{"type":"FeatureCollection","features":[{"type":"Feature","properties":{"name":"洪湖市"},"geometry":{"type":"MultiPolygon","coordinates":[[[[113.887345,30.013843],[113.897345,30.013843],[113.892345,30.0010353828126],[113.887345,30.013843]]],[[[113.917345,30.02384300