Java - Jdbc

    public void connection_jdbc(){
        try{
            Properties prop = new Properties();
            //编译打包完之后的classes下   如下图
            InputStream is = this.getClass().getResourceAsStream("/resources/mysql_jdbc.properties");
            //加载配置文件
            prop.load(is);
            //获取连接信息
            String user = prop.getProperty("user");
            String password = prop.getProperty("password");
            String url = prop.getProperty("url");
            String driverClass = prop.getProperty("driverClass");
            //加载驱动
            Class.forName(driverClass);
            //获取连接
            Connection connection = DriverManager.getConnection(url, user, password);
        }catch(Exception e){
            e.printStackTrace();
        }
    }
================================================================================
mysql_jdbc.properties
user=root
password=xxxxxxx
url=jdbc:mysql://192.168.137.1:3306/learn?serverTimezone=UTC
driverClass=com.mysql.cj.jdbc.Driver