如果你電腦是Mac的，使用homebrew安裝MySQL是一個非常便捷的方式，但是還是會出現一些問題；

首先保證你已經安裝了mysql,如果是通過homebrew安裝的，輸入mysql.server start 啟動服務

如果在輸入

mysql -u root

出現這個錯誤ERROR 1045 (28000): Access denied for user 'zhongchengming'@'localhost' (using password: YES)，應該是修改初始密碼沒有成功

解決步驟

（1）終端輸入mysqld_safe --skip-grant-tables 顯示如下

2017-03-21T11:44:11.6NZ mysqld_safe Logging to '/usr/local/var/mysql/zhongchengmingdeMacBook-Air.local.err'.
2017-03-21T11:44:11.6NZ mysqld_safe Logging to '/usr/local/var/mysql/zhongchengmingdeMacBook-Air.local.err'.
2017-03-21T11:44:11.6NZ mysqld_safe A mysqld process already exists

 （2）再次輸入mysql -u root顯示如下

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 10
Server version: 5.7.17 Homebrew
Copyright (c) 2000, 2016, 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>

   （3）終端輸入 use mysql顯示如下

Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql>

（4）修改密碼UPDATE mysql.user SET authentication_string=PASSWORD('你的密碼') WHERE User='root';

  成功  Query OK, 1 row affected, 1 warning (0.05 sec)

  Rows matched: 1  Changed: 1  Warnings: 1

以上所述是小編給大家介紹的解決mac使用homebrew安裝MySQL無法登陸問題，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對腳本之家網站的支持！