Caused by: java.sql.SQLException: The user specified as a definer (''@'') does not exist

mysql 1449 ： The user specified as a definer ('root'@'%') does not exist 解决方法
权限问题，授权 给 root 所有sql 权限

mysql> grant all privileges on *.* to root@"%" identified by ".";
Query OK, 0 rows affected (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)