Windows下Mysql 5.7.10不能登陆的问题

安装完成后，无法登陆mysql,按理说新安装后默认是以root用户登陆，而且密码为空，所以可以直接进的，但是出现了下面的问题

F:\mysql-5.7.10-win32\mysql-5.7.10-win32\bin>mysql -u root

ERROR 1045(28000):Access denied for user 'root'@'localhost'(using password:NO)

经过我上网查资料后发现新版MySQL默认有密码，之后我尝试在配置文件中加了skip-grant-tables,重启之后可以进去了；所以一定是密码的问题

于是我又开始搜索各种解决办法，经过一番努力，终于找到了解决办法

mysql>delete from mysql.user where user='root' and host='localhost';

Query OK, 1 row affected(0.01 sec)

mysql> select user,host from mysql.user;

+-----------+----------+

|user |host |

+-----------+----------+

|mysql.sys |localhost |

+-----------+----------+

1 row in set(0.00 sec)

mysql>flush privileges;

Query OK,0 rows affected(0.00 sec)

mysql>grant all on *.* to 'root'@'localhost' identified by 'dingwei351';

Query OK,0 rows affected, 1 warning(0.00 sec)

mysql>select user,host from mysql.user;

+----------+-----------+

|user |host |

+----------+-----------+

|mysql.sys |localhost |

|root |localhost |

+----------+-----------+

2 rows in set(0.01 sec)

但是到这还是不行，你用下面的命令会发现一个情况

mysql>select * from mysql.user;

Grant显示N--mysql权限架构体系(应该是这么说)是关闭的，所以应该执行下面的操作

mysql>grant all on *.* to 'root'@'localhost' identified by 'dingwei351' with grant option;

Query OK,0 rows affected(0.01 sec)

退出mysql,将skip-grant-tables注掉，然后重启mysql。此时再登陆就可以了。

F：\mysql-5.7.10-win32\mysql-5.7.10-win32\bin>mysql -u root -p

Enter password:**********

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 2

Server version:5.7.10 MySQL Community Server<GPL>

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