jdbc操作

import java.sql.*;

public class dome1 {
    public static void main(String[] args) {
        Connection connection=null;
        Statement statement=null;
        ResultSet resultSet=null;

        try {
            //1.链接到数据库
            Class.forName("com.mysql.cj.jdbc.Driver");
            //2.
            String userName="root";
            String passWord="123456";
            String url="jdbc:mysql://localhost:3306/zuoye1?serverTimezone=UTC";
            connection = DriverManager.getConnection(url, userName, passWord);
            //3.定义sql，创建状态通道
            statement = connection.createStatement();
            resultSet = statement.executeQuery("select * from employee");
            //4.取出结果集
            while (resultSet.next()){
                System.out.println("姓名："+resultSet.getString("name"));
            }
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException throwables) {
            throwables.printStackTrace();
        } finally {
            try {
                if (connection != null) {
                    connection.close();
                }
                if (statement != null) {
                    statement.close();
                }
                if (resultSet != null) {
                    resultSet.close();
                }
            } catch (SQLException throwables) {
                throwables.printStackTrace();
            }
        }


    }
}