jdbc

JDBC模板

public class mysql {
    public static void main(String[] args) throws ClassNotFoundException, SQLException {
        //加载驱动
        Class.forName("com.mysql.jdbc.Driver");
        //用户信息 和url
        String url="jdbc:mysql://localhost:3306/school?serverTimezone=UTC&useUnicode=true&characterEncoding=utf8&useSSL=true";
        String name="root";
        String pwd="123456";
        //连接成功，得到数据库对象
        Connection connection = DriverManager.getConnection(url, name, pwd);
        //执行sql的对象statement
        Statement statement = connection.createStatement();
        //执行sql的对象去执行sql语句
        String sql="select * from users";
        ResultSet resultSet = statement.executeQuery(sql);
        while(resultSet.next()){
            System.out.println("id"+resultSet.getObject("id"));
            System.out.println("NAME"+resultSet.getObject("NAME"));
            System.out.println("PASSWORD"+resultSet.getObject("PASSWORD"));
            System.out.println("email"+resultSet.getObject("email"));
            System.out.println("birthday"+resultSet.getObject("birthday"));
        }
        //释放连接
        resultSet.close();
        statement.close();
        connection.close();
    }
}