连接数据库（UDS方式）

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
import java.util.Properties;

public class Test {
    public static void main(String[] args) {
        String driver = "org.opengauss.Driver";
        Connection conn;
        try {
            Class.forName(driver).newInstance();
            Properties properties = new Properties();
            properties.setProperty("user", "username");
            properties.setProperty("password", "password");
            conn = DriverManager.getConnection("jdbc:opengauss://localhost:8000/postgres?socketFactory=org.newsclub" +
                            ".net.unix" +
                            ".AFUNIXSocketFactory$FactoryArg&socketFactoryArg=/data/tmp/.s.PGSQL.8000",
                    properties);
            System.out.println("Connection Successful!");
            Statement statement = conn.createStatement();
            statement.executeQuery("select 1");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}