【发布时间】：2018-10-24 11:25:44
【问题描述】：
这里是我的头条。
我正在尝试从 Python 连接到本地 MySQL 8.0.11.0 安装上的数据库。
这是我正在使用的代码：
conn = pymysql.connect(host='localhost', port=3306, user='root', password='placeholder', db='CustomerInfo')
Python 正在返回以下内容：
Traceback (most recent call last):
File "D:\Python\FileCheck.py", line 38, in <module>
conn = pymysql.connect(host='localhost', port=3306, user='root', password='placeholder', db='CustomerInfo')
File "C:\Program Files\Python36\lib\site-packages\pymysql\__init__.py", line 90, in Connect
return Connection(*args, **kwargs)
File "C:\Program Files\Python36\lib\site-packages\pymysql\connections.py", line 704, in __init__
self.connect()
File "C:\Program Files\Python36\lib\site-packages\pymysql\connections.py", line 974, in connect
self._request_authentication()
File "C:\Program Files\Python36\lib\site-packages\pymysql\connections.py", line 1203, in _request_authentication
auth_packet = self._read_packet()
File "C:\Program Files\Python36\lib\site-packages\pymysql\connections.py", line 1059, in _read_packet
packet.check_error()
File "C:\Program Files\Python36\lib\site-packages\pymysql\connections.py", line 384, in check_error
err.raise_mysql_exception(self._data)
File "C:\Program Files\Python36\lib\site-packages\pymysql\err.py", line 109, in raise_mysql_exception
raise errorclass(errno, errval)
pymysql.err.OperationalError: (1045, "Access denied for user 'root'@'localhost' (using password: NO)")
我已确认通过MySQL Workbench 登录时可以访问数据库。奇怪的是 Python 告诉我"using password: NO"，即使我正在发送密码。
我尝试在脚本中将 passwd 更改为 "password" 并创建具有适当权限的新用户。两者都没有奏效。
不确定接下来要检查什么。
编辑：以下是对 root 的授权：
GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, RELOAD, SHUTDOWN, PROCESS, FILE, REFERENCES, INDEX, ALTER, SHOW DATABASES, SUPER, CREATE TEMPORARY TABLES, LOCK TABLES, EXECUTE, REPLICATION SLAVE, REPLICATION CLIENT, CREATE VIEW, SHOW VIEW, CREATE ROUTINE, ALTER ROUTINE, CREATE USER, EVENT, TRIGGER, CREATE TABLESPACE, CREATE ROLE, DROP ROLE ON *.* TO `root`@`localhost` WITH GRANT OPTION
GRANT BACKUP_ADMIN,BINLOG_ADMIN,CONNECTION_ADMIN,ENCRYPTION_KEY_ADMIN,GROUP_REPLICATION_ADMIN,PERSIST_RO_VARIABLES_ADMIN,REPLICATION_SLAVE_ADMIN,RESOURCE_GROUP_ADMIN,RESOURCE_GROUP_USER,ROLE_ADMIN,SET_USER_ID,SYSTEM_VARIABLES_ADMIN,XA_RECOVER_ADMIN ON *....
GRANT ALL PRIVILEGES ON `customerinfo`.* TO `root`@`localhost` WITH GRANT OPTION
GRANT PROXY ON ''@'' TO 'root'@'localhost' WITH GRANT OPTION
编辑 2： 在connections.py中为connect和_request_authentication添加了调试行。
这是最新的：
C:\Users\Paul Miller>python.exe D:\Python\FileCheck.py
** DEBUG 1 **
connect, line 973
host= localhost
user= root
password= placeholder
** DEBUG 2 **
_request_authentication line 1172
user= root
password= placeholder
Traceback (most recent call last):
File "D:\Python\FileCheck.py", line 38, in <module>
conn = pymysql.connect(host='localhost', port=3306, user='root', password='placeholder', db='CustomerInfo')
File "C:\Program Files\Python36\lib\site-packages\pymysql\__init__.py", line 90, in Connect
return Connection(*args, **kwargs)
File "C:\Program Files\Python36\lib\site-packages\pymysql\connections.py", line 704, in __init__
self.connect()
File "C:\Program Files\Python36\lib\site-packages\pymysql\connections.py", line 982, in connect
self._request_authentication()
File "C:\Program Files\Python36\lib\site-packages\pymysql\connections.py", line 1218, in _request_authentication
auth_packet = self._read_packet()
File "C:\Program Files\Python36\lib\site-packages\pymysql\connections.py", line 1067, in _read_packet
packet.check_error()
File "C:\Program Files\Python36\lib\site-packages\pymysql\connections.py", line 384, in check_error
err.raise_mysql_exception(self._data)
File "C:\Program Files\Python36\lib\site-packages\pymysql\err.py", line 109, in raise_mysql_exception
raise errorclass(errno, errval)
pymysql.err.OperationalError: (1045, "Access denied for user 'root'@'localhost' (using password: NO)")
编辑 3： 启用日志记录。日志中没有任何意外，但这是最新尝试产生的结果：
2018-05-15T10:27:15.197445Z 43 Connect root@localhost on CustomerInfo using TCP/IP
2018-05-15T10:27:15.197540Z 43 Connect Access denied for user 'root'@'localhost' (using password: NO)
编辑 4： 发现问题。我添加了一些调试语句如下：
if self._auth_plugin_name in ('', 'mysql_native_password'):
print("** DEBUG 3 **")
print(self.password)
print("\n")
authresp = _scramble(self.password.encode('latin1'), self.salt)
问题是这个 IF 块失败了......程序流没有到达“authresp”语句。当我的同事运行同样的程序时，他的密码会打印在控制台中。
所以，现在我只需要弄清楚我为什么不去这个分支。
【问题讨论】：
-
1)不应该是password而不是passwd吗？2)在错误中它还说它尝试连接root，而不是paul- 所以我会检查连接设置和使用示例 -
谢谢@arieljannai。那是我的屏幕粘贴错误。无论我尝试 root 还是我创建的用户 paul，我都会收到相同的消息。我也试过“密码”和“密码”。
-
我更新了屏幕截图，以便它们匹配。
-
我注意到用户是'root'@'localhost'。您确定为该特定 root 帐户提供正确的密码吗？请记住，可能有多个 root 用户帐户。
-
@paulmiller3000 即使使用
paul，您也会得到Access denied for user 'root'@'localhost' (using password: NO)？
标签： python mysql python-3.x pymysql mysql-8.0