leaflet加载geoJSON图层数据时报Invalid LatLng object

leaflet加载geoJSON图层数据时报Invalid LatLng object
一、问题leaflet加载geoJSON图层数据时报：Uncaught Error:Invalid LatLng object错误，如下所示
(1)Uncaught Error: Invalid LatLng object: (undefined, undefined)

(2)Uncaught Error: Invalid LatLng object: (121,39, 123,41)

二、经测试排查问题原因为geometry对象中type属性与coordinates属性不一致引起。
(1)报错代码"geometry":{ "type": "MultiPolygon", "coordinates": [[[123,41],[121,39],[126,41]]]}

修改为"geometry":{ "type": "MultiPolygon", "coordinates": [[[[123,41],[121,39],[126,41]]]]}后正常

(1)报错代码"geometry":{ "type": "Polygon", "coordinates": [[[[123,41],[121,39],[126,41]]]]}

修改为"geometry":{ "type": "Polygon", "coordinates": [[[123,41],[121,39],[126,41]]]}后正常

三、总结geometry对象中type属性为"MultiPolygon"时coordinates属性为四维数组。geometry对象中type属性为"Polygon"时coordinates属性为三维数组