如何使用JDBC從數據庫檢索SDO_GEOMETRY？

Question

我是Java的新手。我需要從數據庫中檢索SDO_GEOMETRY，並使用jdbc將其轉換爲字符串。如果任何人有示例或想法，請與我分享。

幫助將不勝感激。

最好的問候，
桑傑。

Answer 1

查看JGeometry課程。有一個示例稱爲空間類型：

 /// 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();