如果你电脑是Mac的，使用homebrew安装MySQL是一个非常便捷的方式，但是还是会出现一些问题； 首先保证你已经安装了mysql,如果是通过homebrew安装的，输入[code]mysql.server start [/code]启动服务 如果在输入 出现这个错误ERROR 1045 (28000): Access denied for user [url=]'zhongchengming'@'localhost'[/url] (using password: YES)，应该是修改初始密码没有成功 [b]解决步骤[/b] （1）终端输入mysqld_safe --skip-grant-tables 显示如下 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）再次输入mysql -u root显示如下 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）终端输入 use mysql显示如下 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）修改密码[code]UPDATE mysql.user SET authentication_string=PASSWORD('你的密码') WHERE User='root';[/code]   成功  Query OK, 1 row affected, 1 warning (0.05 sec)   Rows matched: 1  Changed: 1  Warnings: 1 以上所述是小编给大家介绍的解决mac使用homebrew安装MySQL无法登陆问题，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对编程素材网网站的支持！