IDEA连接mysql报错！Server returns invalid timezone. Go to 'Advanced' tab and set 'serverTimezone'

在IDEA连接mysql时，地址，用户名，密码，数据库名，全都配置好了，但是点测试连接，报错：Server returns invalid timezone. Go to 'Advanced' tab and set 'serverTimezon，说明数据库没有设置时区

使用如下方法设置时区

C:\Users\oor>mysql -u root -p

Enter password: ********

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 118

Server version: 5.7.28-log MySQL Community Server (GPL)

Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show variables like'%time_zone';

+------------------+--------+

| Variable_name | Value |

+------------------+--------+

| system_time_zone | |

| time_zone | SYSTEM |

+------------------+--------+

2 rows in set, 1 warning (0.02 sec)

mysql> set global time_zone = '+8:00';

Query OK, 0 rows affected (0.00 sec)

mysql>