JDBC连接PostgreSQL

官方的PostgreSQL JDBC驱动程序，驱动类名：org.postgresql.Driver，URL格式：

jdbc:postgresql:database
jdbc:postgresql://host/database
jdbc:postgresql://host:port/database

public class TestPg {

	private static Driver driver = null;// 驱动变量
	static{
    	loadDrivers("org.postgresql.Driver");
    }
	
    // 装载和注册所有JDBC驱动程序
    public static void loadDrivers(String dri) {
        String driverClassName = dri;
        try {
            driver = (Driver) Class.forName(driverClassName).newInstance();
            DriverManager.registerDriver(driver);
            System.out.println("成功注册JDBC驱动程序" + driverClassName);
        } catch (Exception e) {
            System.out.println("无法注册JDBC驱动程序:" + driverClassName + ",错误:" + e);
        }
    }
    
    public static void main(String[] args) {
    	TestPg tp;
    	try {
			Connection conn = DriverManager.getConnection("jdbc:postgresql://10.1.141.12:5432/expertdb", "postgres", "root");
			Statement sttmt = conn.createStatement();
			ResultSet rs = sttmt.executeQuery("select * from pub_user");
			while(rs!=null && rs.next()){
				String name = rs.getString(2);
				System.out.println(name);
			}
    	} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}