因为之前用的 MySql 版本较低，所以每次对这个报错都感觉很正常。但是，最近升级了配置已经将 MySql升级了为 5.7.14，执性 php artisan migrate 还是会报以下错误：
In Connection.php line 664:
SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was t
oo long; max key length is 1000 bytes (SQL: alter table users add unique
users_email_unique(email))
In Connection.php line 458:
SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was t
oo long; max key length is 1000 bytes

参考链接