正在加载类'com.mysql.jdbc.driver'。这是不推荐的

Question

我的代码：

file ConnectionTest.java
package com.test.connection;

import java.io.InputStream;

import java.sql.*;
import java.util.Properties;

import org.junit.Test;



public class ConnectionTest {
@Test
public void getConnectTest5() throws Exception {
    //1、读取配置文件中的基本信息
    InputStream is = ConnectionTest.class.getClassLoader().getResourceAsStream("jdbc.properties");
    
    Properties pros = new Properties();
    pros.load(is);
    
    String user = pros.getProperty("user");
    String password = pros.getProperty("password");
    String url = pros.getProperty("url");
    String driverClass = pros.getProperty("driverClass");
    
    Class.forName("com.mysql.cj.jdbc.Driver");
    
    Connection conn = DriverManager.getConnection(url, user, password);
    System.out.println(conn);
} 

}

user=root password=aa123456 url=jdbc:mysql://localhost:3306/test？servertimezone=utc&characterencoding=utf-8&usessl=false driverclass=com.mysql.cj.jdbc.driver

Answer 1

我的代码错误：加载类com.mysql.jdbc.driver'。这是不赞成的。新的驱动程序类是com.mysql.cj.jdbc.driver'。驱动程序通过SPI自动注册，通常不需要手动加载驱动程序类。