[Question] How to convert spatial type data

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### Description

我遇到一个使用纯钧获取 postgresql 中的空间类型数据 遇到了数据类型不能转换的问题.
1. 转换string,会报错java.lang.ClassCastException: org.postgresql.util.PGobject cannot be cast to java.lang.String

chunjun是怎么做 空间数据类型 的 转换呢

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