使用SQL将wkt格式转换为geojson格式
wkt格式数据MULTIPOLYGON(((121.49691905915 31.277156147522,121.496352816047 31.2775864000466,121.4956804871 31.2779034754296,121.494958378564 31.2782205901886,121.494448233496 31.2783791571033,121.493752612235 31.2784640890938,121.492238271363 31.27847252
