Question

我是python的新手，开始实现小程序，现在尝试连接数据库。我安装了python 3.4和mysql.connector 2.0.4。下面给出的代码是我用来连接数据库的东西

#!"C:\python34\python.exe"
import sys
import mysql.connector
print("Content-Type: text/html;charset=utf-8")
print()
conn = mysql.connector.connect(host='localhost:8051',
                                       database='test',
                                       user='root',
                                       password='tiger')

if conn.is_connected():
    print('Connected to MySQL database')

但是我得到的错误如下所示。不明白为什么会发生这种错误，因为设置环境有误或者有其他原因请建议

Traceback (most recent call last):
  File "C:\Python34\lib\site-packages\mysql\connector\network.py", line 448, in open_connection
    socket.SOL_TCP)
  File "C:\Python34\lib\socket.py", line 533, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno 11004] getaddrinfo failed

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<pyshell#8>", line 2, in <module>
    password='tiger',database='test')
  File "C:\Python34\lib\site-packages\mysql\connector\__init__.py", line 179, in connect
    return MySQLConnection(*args, **kwargs)
  File "C:\Python34\lib\site-packages\mysql\connector\connection.py", line 95, in __init__
    self.connect(**kwargs)
  File "C:\Python34\lib\site-packages\mysql\connector\abstracts.py", line 719, in connect
    self._open_connection()
  File "C:\Python34\lib\site-packages\mysql\connector\connection.py", line 209, in _open_connection
    self._socket.open_connection()
  File "C:\Python34\lib\site-packages\mysql\connector\network.py", line 464, in open_connection
    errno=2003, values=(self.get_address(), _strioerror(err)))
mysql.connector.errors.InterfaceError: 2003: Can't connect to MySQL server on 'localhost:8051:3306' (11004 getaddrinfo failed)

Answer 1

错误信息非常明确：

 Can't connect to MySQL server on 'localhost:8051:3306'

请参阅双端口定义？

host='localhost:8051'

应该最喜欢

host='localhost', port='8051'

Answer 2

您正在使用连接参数错误。我想你需要这样做：

conn = mysql.connector.connect(host='localhost',
                               port=8051,
                               database='test',
                               user='root',
                               password='tiger')

查看此doc了解更多详情。

Answer 3

MySQL的默认端口是3306，当你没有通过＆＃34;端口＆＃34; mysql.connector.connect的参数它假设您使用的是默认端口3306，如果您使用另一个端口，则应该传递：

port=xxxx

到构造函数。

Answer 4

对我来说，我在IDE中添加了所有连接器。

mysql连接器 mysql-connector-async-dd
mysql-connector-python
mysql-connector-python-dd
mysql-connector-repackaged

然后您可以在此处查看所有数据库名称：

import mysql.connector
mydb = mysql.connector.connect(host='localhost',user='root', passwd = 'Root@1234')
mycursor = mydb.cursor()
mycursor.execute("show databases")
for i in mycursor:
    print(i)

使用mysql.connector for python连接数据库时出错

4 个答案: