MySQL5.7 初始化启动报错:initialize specified but the data directory has files in it. Aborting

今天安装好mysql5.7启动是报下面的错误，然后想到需要初始化mysql 使用 mysqld --initialize

2019-10-31T07:52:53.807647Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use –explicit_defaults_for_timestamp server option (see documentation for more details).
2019-10-31T07:52:53.809065Z 0 [ERROR] –initialize specified but the data directory has files in it. Aborting.
2019-10-31T07:52:53.809095Z 0 [ERROR] Aborting

最后仔细看了报错的原因，是因为第一次初始化的时候没初始化好，产生乐data目录，删除data目录重新初始化即可，顺便提一下如果mysqld -install注册失败，首先要使用管理员权限的命令提示符，然后便可注册成功，正常使用mysql