PostGis的方法

postgis地理格式信息转换成坐标形式

SELECT ST_GeomFromText('MULTILINESTRING((1 1, 5 5), (1 3, 3 1))');
SELECT ST_AsText ('010500000002000000010200000002000000000000000000F03F000000000000F03F00000000000014400000000000001440010200000002000000000000000000F03F00000000000008400000000000000840000000000000F03F');