首先让我提一下,我已经看了很多建议的问题,但没有找到相关的答案。这就是我正在做的。
我连接到Amazon EC2实例。我可以用这个命令登录MySQL根目录:
mysql -u root -p
然后我用host %创建了一个新的用户帐单
CREATE USER 'bill'@'%' IDENTIFIED BY 'passpass';
授予用户bill的所有权限:
grant all privileges on *.* to 'bill'@'%' with grant option;
然后我退出root用户,尝试用bill登录:
mysql -u bill -p
输入正确的密码并得到以下错误:
错误1045(28000):用户“账单”@“localhost”(使用密码:YES)的访问被拒绝
现在!解决方案:
MySQL错误1045(28000):拒绝访问用户'user'@'localhost'
(使用密码:YES);
Wampserver 3.2.0新的安装或升级
也许xamp使用mariaDB作为默认值就可以了。
Wamp服务器自带mariaDB和mysql, mariaDB默认安装在3306端口,mysql默认安装在3307端口,有时端口是3308。
连接mysql!
在安装时,它要求使用mariaDB或MySql,但mariaDB是默认的,你不能改变它,检查MySql选项并安装。
安装完成后,将在默认端口3306上运行mariaDB,在另一个端口3307或3308上运行mysql。
右击wampserver图标,它的运行应该在右下角,转到工具,看到正确的mysql运行端口。
并将其包含在数据库连接中,如下所示:
$host = 'localhost';
$db = 'test';
$user = 'root';
$pass = '';
$charset = 'utf8mb4';
$port = '3308';//Port
$dsn = "mysql:host=$host;dbname=$db;port=$port;charset=$charset"; //Add in connection
$options = [
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
PDO::ATTR_EMULATE_PREPARES => false,
];
try {
$pdo = new PDO($dsn, $user, $pass, $options);
} catch (\PDOException $e) {
throw new \PDOException($e->getMessage(), (int)$e->getCode());
}
注意:我使用pdo。
更多信息请访问:https://sourceforge.net/projects/wampserver/
当你的密码包含一些特殊字符,如@,$等,也会发生这种情况。
为了避免这种情况,你可以把password用单引号括起来:
$ mysql -usomeuser -p's0mep@$$w0Rd'
或者在输入时不用密码。请留空,然后在终端要求时输入。这是推荐的方法。
$ mysql -usomeuser -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 191
Server version: 5.5.46-0ubuntu0.14.04.2 (Ubuntu)
Copyright (c) 2000, 2015, 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>
如果您忘记密码或想修改密码。你可以遵循以下步骤:
1 :stop your mysql
[root@maomao ~]# service mysqld stop
Stopping MySQL: [ OK ]
2 :use “--skip-grant-tables” to restart mysql
[root@mcy400 ~]# mysqld_safe --skip-grant-tables
[root@cy400 ~]# Starting mysqld daemon with databases from /var/lib/mysql
3 : open a new window and input mysql -u root
[root@cy400 ~]# mysql -u root
Welcome to the MySQL monitor. Commands end with ; or \g.
4 : change the user database
mysql> use mysql
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
5 : modify your password your new password should be input in "()"
mysql> update user set password=password('root123') where user='root';
Query OK, 3 rows affected (0.00 sec)
Rows matched: 3 Changed: 3 Warnings: 0
6 : flush
mysql> flush privileges;
7: quit
mysql> quit
Bye
8: restart mysql
[root@cy400 ~]# service mysqld restart;
Stopping MySQL: [ OK ]
Starting MySQL: [ OK ]
宾果!你可以用用户名和新密码连接你的数据库:
[root@cy400 ~]# mysql -u root -p <br>
Enter password: admin123 <br>
Welcome to the MySQL monitor. Commands end with ; or \g. <br>
Your MySQL connection id is 2 <br>
Server version: 5.0.77 Source distribution <br>
Type 'help;' or '\h' for help. Type '\c' to clear the buffer. <br>
mysql> quit <br>
Bye
如果MySQL运行在不区分大小写的操作系统(如Windows)上,也可能发生这种情况。
例:我发现尝试使用这些凭据连接到数据库失败:
mysql>授予数据库ev105的select权限。*到'specialuser',标识为's3curepa5wrd';
$ mysql -specialuser' -p's3curepa5wrd' -h10.61.130.89 databaseV105
错误1045(28000):拒绝访问用户'specialuser'@'10.0.1.113'(使用密码:YES)
但是,这成功了:
Mysql >授予select权限*到'specialuser',标识为's3curepa5wrd';
mysql ' - h10300,300,400 database105 -p
输入密码: