JDBC连接数据库

package JDBC;

import java.sql.*;

public class Demo1 {
    public static void main(String[] args) throws ClassNotFoundException, SQLException {
        //加载驱动
        Class.forName("com.mysql.cj.jdbc.Driver");
        //用户信息和URL
        String url="jdbc:mysql://localhost:3306/jdbcstudent?useUnicode=true&useSSL=true&characterEncoding=utf8&serverTimezone=GMT%2B8";
        String username="root";
        String password="123456";
        //连接成功，数据库对象
        Connection connection=DriverManager.getConnection(url,username,password);
        //执行sql对象
        Statement statement=connection.createStatement();
        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("birthday="+resultSet.getObject("birthday"));
        }
        //释放连接
        resultSet.close();
        statement.close();
        connection.close();
    }
}

//加载驱动
        Class.forName("com.mysql.cj.jdbc.Driver");

Exception in thread "main" java.sql.SQLException: The server time zone value '�й���׼ʱ��' is unrecognized 
or represents more than one time zone. You must configure either the server or JDBC driver (via the 'serverTimezone'
 configuration property) to use a more specific time zone value if you want to utilize time zone support.

id=1
name=zhangsan
password=123456
birthday=1980-12-04
id=2
name=lisi
password=123456
birthday=1981-12-04
id=3
name=wangwu
password=123456
birthday=1979-12-04