Question

我正在尝试使用Python和MySQL创建一个小型应用程序。我设法使用MySQL连接来连接Python和MySQL。但是现在，当我尝试运行此脚本以实际连接到数据库时：

import mysql.connector

mydb = mysql.connector.connect(
    passwd="12345", 
    db="DB", 
    host="hostname", 
    user="root"
    )
print(mydb)

我遇到很多错误，例如：

 File "C:\Users\Krystian\AppData\Local\Programs\Python\Python37-32\lib\site-packages\mysql\connector\network.py", line 485, in open_connection
socket.SOL_TCP)

File "C:\Users\Krystian\AppData\Local\Programs\Python\Python37-32\lib\socket.py", line 748, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno 11001] getaddrinfo failed
File "c:/Users/Krystian/Desktop/DB/db.py", line 7, in <module>
    user="root"

  File "C:\Users\Krystian\AppData\Local\Programs\Python\Python37-32\lib\site-packages\mysql\connector\__init__.py", line 179, in connect
    return MySQLConnection(*args, **kwargs)
  File "C:\Users\Krystian\AppData\Local\Programs\Python\Python37-32\lib\site-packages\mysql\connector\connection.py", line 94, in __init__
    self.connect(**kwargs)
  File "C:\Users\Krystian\AppData\Local\Programs\Python\Python37-32\lib\site-packages\mysql\connector\abstracts.py", line 722, in connect
    self._open_connection()
  File "C:\Users\Krystian\AppData\Local\Programs\Python\Python37-32\lib\site-packages\mysql\connector\connection.py", line 207, in _open_connection
    self._socket.open_connection()
  File "C:\Users\Krystian\AppData\Local\Programs\Python\Python37-32\lib\site-packages\mysql\connector\network.py", line 501, in open_connection
    errno=2003, values=(self.get_address(), _strioerror(err)))
mysql.connector.errors.InterfaceError: 2003: Can't connect to MySQL server on 'hostname:3306' (11001 getaddrinfo failed)

我尝试了其他与数据库连接的方法，但是它们没有用，我不确定现在该怎么办。

在此先感谢您的帮助！

EDIT1

如 Juergen 所述，修复主机名后，以上大部分错误均已消失，但出现了新错误：

File "C:\Users\Krystian\AppData\Local\Programs\Python\Python37-32\lib\site-packages\mysql\connector\connection.py", line 94, in __init__
    self.connect(**kwargs)
  File "C:\Users\Krystian\AppData\Local\Programs\Python\Python37-32\lib\site-packages\mysql\connector\abstracts.py", line 722, in connect
    self._open_connection()
  File "C:\Users\Krystian\AppData\Local\Programs\Python\Python37-32\lib\site-packages\mysql\connector\connection.py", line 211, in _open_connection
    self._ssl)
  File "C:\Users\Krystian\AppData\Local\Programs\Python\Python37-32\lib\site-packages\mysql\connector\connection.py", line 141, in _do_auth
    auth_plugin=self._auth_plugin)
  File "C:\Users\Krystian\AppData\Local\Programs\Python\Python37-32\lib\site-packages\mysql\connector\protocol.py", line 102, in make_auth
    auth_data, ssl_enabled)
  File "C:\Users\Krystian\AppData\Local\Programs\Python\Python37-32\lib\site-packages\mysql\connector\protocol.py", line 58, in _auth_response
    auth = get_auth_plugin(auth_plugin)(
  File "C:\Users\Krystian\AppData\Local\Programs\Python\Python37-32\lib\site-packages\mysql\connector\authentication.py", line 191, in get_auth_plugin
    "Authentication plugin '{0}' is not supported".format(plugin_name))
mysql.connector.errors.NotSupportedError: Authentication plugin 'caching_sha2_password' is not supporte

Answer 1

我想，您的计算机（运行数据库的计算机）未命名为“主机名”：

    host="hostname",

如果它是本地计算机，请尝试localhost。 “主机名”只是示例代码中的占位符。您总是必须替换掉。

关于您的修改：

好像您的数据库服务器配置错误。也许您需要在错误消息中命名的插件。

Answer 2

尝试：

mysql.connector.connect(
        host="localhost",
        user="user_name",
        passwd="db_password",
        database="db_name")

Answer 3

好了，如上面的用户所述，已经更正了主机名，并返回到旧版安全性以及创建新数据库的方式解决了该问题

Python MySQL连接数据库错误

3 个答案: