JDBC.txt是链接mysql数据库的源码复制粘贴即可需要mysql.jar包

import java.sql.*; public class JDBC { public static void main(String args[]) throws ClassNotFoundException, SQLException { //驱动 Class.forName("com.mysql.cj.jdbc.Driver"); //建立连接 String url="jdbc:mysql://127.0.0.1:3306/test?characterEncoding=utf8&serverTimezone