How to Insert Point Geometry Values into PostgreSQL Using JDBC

How can I insert point geometry values into a PostgreSQL database using JDBC?

PreparedStatement pstmt = connection.prepareStatement("INSERT INTO your_table (geom) VALUES (ST_SetSRID(ST_MakePoint(?, ?), ?))");
 pstmt.setDouble(1, longitude);
 pstmt.setDouble(2, latitude);
 pstmt.setInt(3, srid);
 pstmt.executeUpdate();

Inserting point geometries into a PostgreSQL database using JDBC involves using the PostGIS extension for spatial data. PostGIS provides functions to create geometry types, and JDBC allows you to communicate effectively with your PostgreSQL database.

// Connecting to PostgreSQL with JDBC
Connection connection = DriverManager.getConnection("jdbc:postgresql://localhost:5432/your_db", "user", "password");

// Inserting a point geometry
PreparedStatement pstmt = connection.prepareStatement("INSERT INTO your_table (geom) VALUES (ST_SetSRID(ST_MakePoint(?, ?), ?))");
pstmt.setDouble(1, -73.97); // Longitude
 pstmt.setDouble(2, 40.77); // Latitude
 pstmt.setInt(3, 4326); // SRID
 pstmt.executeUpdate();
pstmt.close();
connection.close();

Causes

• PostGIS not installed or enabled in the database.
• Incorrectly formatted SQL statements.
• Mismatched geometry types or SRIDs.

Solutions

• Ensure PostGIS is properly installed and enabled on your PostgreSQL database.
• Use the correct SQL syntax with PostGIS geometry functions.
• Double-check the data types and projections (SRIDs) utilized in your queries.

Mistake: Not using the ST_SetSRID function which defines the spatial reference identifier for the geometry.

Solution: Always wrap your point creation in ST_SetSRID() to define the reference system.

Mistake: Connecting to the database without proper error handling.

Solution: Implement try-catch blocks to manage SQLExceptions when connecting and executing queries.