java - 如何使用 JDBC 从数据库中检索 SDO_GEOMETRY？

Question

我是 Java 的新手。我需要从数据库中检索 SDO_GEOMETRY 并使用 jdbc 将其转换为字符串。如果有人有示例或想法，请与我分享。

帮助将不胜感激。

最好的问候，
桑杰。

Answer 1

查看 JGeometry类(class)。有调用空间类型的例子:

     /// reading a geometry from database
     ResultSet rs = statement.executeQuery("SELECT geometry FROM states where name='Florida'");
     STRUCT st = (oracle.sql.STRUCT) rs.getObject(1);
     //convert STRUCT into geometry
     JGeometry j_geom = JGeometry.load(st);

     // ... manipulate the geometry or create a new JGeometry ...

     /// writing a geometry back to database
     PreparedStatement ps = connection.prepareStatement("UPDATE states set geometry=? where name='Florida'");
     //convert JGeometry instance to DB STRUCT
     STRUCT obj = JGeometry.store(j_geom, connection);
     ps.setObject(1, obj);
     ps.execute();