ApsaraDB RDS:Column encryption driver (JDBC)

<dependencies>
   ...
  <dependency>
    <groupId>com.aliyun</groupId>
    <artifactId>aliyun-cls-jdbc</artifactId>
    <version>1.0.10-1</version>
  </dependency>
   ...
</dependencies>

package org.example;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Properties;
public class Main {
    public static void main(String[] args) throws SQLException {
        // Update the following connection information (hostname, port, dbname, username, password) based on your actual environment.
        String hostname = "pgm-****.pg.rds.aliyuncs.com"; // The instance endpoint. Replace with your actual value.
        String port = "5432"; // The database port. Replace with your actual value.
        String dbname = "testdb"; // The database name. Replace with your actual value.
        String username = "user"; // The database username. Use a user that has the ciphertext permission (JDBC decryption).
        String password = "password"; // The password for the database user.
        
        // This is a sample key. We recommend using a stronger key to improve security.
        String MEK = "00112233445566778899aabbccddeeff";
        
       // Create database connection properties.
        Properties props = new Properties();
        props.setProperty("user", username);
        props.setProperty("password", password);
        props.setProperty("MEK", MEK);
        
        // Format the database connection URL.
        String dbUrl = String.format("jdbc:postgresql:encdb://%s:%s/%s", hostname, port, dbname);
        
        // Get the database connection using DriverManager.
        Connection connection = DriverManager.getConnection(dbUrl, props);
        
        // Execute a query to retrieve data from the test table.
        ResultSet rs = connection.createStatement().executeQuery("SELECT * FROM test_table");
        while (rs.next()) {
            for (int i = 1; i <= rs.getMetaData().getColumnCount(); i++) { // Column indexes start from 1.
                System.out.print(rs.getString(i) + "\t");
            }
            System.out.println(); // New line.
        }
        
        // Close resources.
        rs.close();  // Close the result set.
        connection.close(); // Close the connection.
    }
}