JDBC```` public void testjdbc() throws Exception { // 1、注册驱动

public void testjdbc() throws Exception {
//        1、注册驱动
        Class.forName("com.mysql.cj.jdbc.Driver");
//        2、获取连接
        Connection connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/db01", "root", "1234");
//        3、获取sql语句执行对象
        Statement statement = connection.createStatement();
        // 4、执行sql语句
        String sql = "insert into user(id,name,username,age,createtime,beizhu) values(100,'管理员','admin',20,'2021-03-09','备注信息')";
        int count = statement.executeUpdate(sql);
        System.out.println(count);
        if (count > 0) {
            System.out.println("添加成功");
        } else {
            System.out.println("添加失败");
        }
        statement.close();
        connection.close();
    }