解析GML。对于学习GML 的朋友，是一个很好的例子。-parse gml.it is a good example for gml leaners.

GML to db 将GML解析，然后存储到数据库中，这是粗劣版，仅供参考-Will parse GML GML to db, and then stored in the database, which is poor version, for reference only