var array4Ring:Array = (geometry as Polygon).rings; 数据结构为 图片内格式 [ [ {"m":null,"spatialReference":null,"y":45.76632218427849,"z":null,"x":85.09957964091112,"extent":null,"type":"esriGeometryPoint"}, {"m":null,"spatialReference":null,"y":44.65506996177405,"z":null,"x":86.23729024966566,"extent":null,"type":"esriGeometryPoint"}, {"m":null,"spatialReference":null,"y":44.463246661460786,"z":null,"x":84.61009949528416,"extent":null,"type":"esriGeometryPoint"}, {"m":null,"spatialReference":null,"y":45.76632218427849,"z":null,"x":85.09957964091112,"extent":null,"type":"esriGeometryPoint"} ] ]