Question

我正在尝试使用python连接到本地mysql系统。

我注意到我只能通过控制台从控制台登录到我的mysql系统须藤/ usr / bin / mysql -u root -p

我环顾了网上，对所有建议都感到困惑，这些建议对我都不起作用。

就像我尝试过的

mysql> SELECT User, Host, plugin FROM mysql.user;

哪个给我 ...

+------------------+-----------+-----------------------+
| User             | Host      | plugin                |
+------------------+-----------+-----------------------+
| root             | localhost | mysql_native_password |
| mysql.session    | localhost | mysql_native_password |
| mysql.sys        | localhost | mysql_native_password |
| debian-sys-maint | localhost | mysql_native_password |
| keith            | localhost | mysql_native_password |
+------------------+-----------+-----------------------+

5 rows in set (0.12 sec)

...

import mysql.connector

cnx = mysql.connector.connect(user='root', password='#########',
                          host='127.0.0.1',
                          database='SurveyData')
cnx.close()

...

我遇到以下错误

...

MySQLInterfaceError                       Traceback (most recent call last)
~/miniconda3/lib/python3.7/site-packages/mysql/connector  /connection_cext.py in _open_connection(self)
    199         try:
--> 200             self._cmysql.connect(**cnx_kwargs)
    201         except MySQLInterfaceError as exc:

MySQLInterfaceError: Access denied for user 'root'@'localhost'

During handling of the above exception, another exception occurred:

Answer 1

似乎您使用root @ localhost然后进行连接。您尝试过root@127.0.0.1吗？

还可以检出：Access Denied for User 'root'@'localhost' (using password: YES) - No Privileges?

通过命令行向用户帐户授予全局特权。打开终端并运行以下命令。

:~$ mysql -u root -p
Enter password: 
mysql> GRANT SELECT ON *.* TO 'root'@'localhost' WITH GRANT OPTION;
Query OK, 0 rows affected (0.00 sec)

向用户帐户授予特殊架构特权。打开终端，运行以下命令。

:~$ mysql -u root -p
Enter password: 
mysql> GRANT SELECT,UPDATE,INSERT,DELETE ON SurveyData.* TO 'root'@'localhost';
Query OK, 0 rows affected (0.00 sec)
mysql> GRANT ALL PRIVILEGES ON SurveyData.* TO 'root'@'localhost';
Query OK, 0 rows affected (0.00 sec)

我使用此脚本进行测试：

try:
    connection = mysql.connector.connect(host='localhost',
                                         database='SurveyData',
                                         user='root',
                                         password='########')

    if connection.is_connected():
        db_Info = connection.get_server_info()
        print("Connected to MySQL Server version ", db_Info)
        cursor = connection.cursor()
        cursor.execute("select database();")
        record = cursor.fetchone()
        print("Your connected to database: ", record)

except Error as e:
    print("Error while connecting to MySQL", e)
finally:
    if (connection.is_connected()):
        cursor.close()
        connection.close()
        print("MySQL connection is closed")

Answer 2

以 root 用户登录可被视为“潜在风险”，这解释了阻止通过该用户进行的任何连接。所以解决方案是创建一个新用户并授予他们所有权限。

mysql> CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'newpassword';    
mysql> GRANT ALL PRIVILEGES ON *.* TO 'newuser'@'localhost';

尝试使用连接器/ Python时出现错误“用户'root'@'localhost的访问被拒绝”

2 个答案: