Connection to @localhost failed. [08001] Could not create connection to database server. Attempted reconnect 3 times. Giving up.
在连接字符串后面加上
?serverTimezone=UTC
其中UTC是统一标准世界时间。
添加这个时区后
Cannot connect to a database (不能连接到数据库)
Step 1. Check your network settings
Step 2. Check your connection properties