java 連接 pgsql

首先在jdbc的配置中新增pgsql的配置屬性:

pgsql.driverClassName=org.postgresql.Driver
pgsql.url=jdbc:postgresql://12.1.16.211:5432/fskp
pgsql.username=admin
pgsql.password=123456

java連接pgsql

package com.wdg.util;

import java.io.InputStream;
import java.io.InputStreamReader;
import java.sql.Connection;
import java.sql.DriverManager;
import java.util.Properties;

public class PGSQLUtil {

	public static PGSQLUtil pgsqlUtil = null;

	private static Connection conn = null;

	public static PGSQLUtil getInstance() {
		if (pgsqlUtil == null) {
			return new PGSQLUtil();
		}
		return pgsqlUtil;
	}

	public Connection getConnection() {
		if (conn == null) {
			try {
				InputStream is = null;
				is = PGSQLUtil.class.getClassLoader().getResourceAsStream("jdbc.properties");
				Properties props = new Properties();
				props.load(new InputStreamReader(is, "utf-8"));
				Class.forName(props.getProperty("pgsql.driverClassName"));
				String url = props.getProperty("pgsql.url");
				String username = props.getProperty("pgsql.username");
				String password = props.getProperty("pgsql.password");
				conn = DriverManager.getConnection(url, username, password);
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
		return conn;
	}

	public static void main(String[] args) {

		Connection conns = PGSQLUtil.getInstance().getConnection();
		System.out.println(conns);
	}

}

 運行主函數：輸出

這樣就可以連接成功了