Question

据我所知，我已经安装了MySQL Connector / Python（v1.2.3）模块而没有任何问题。这是在CentOS 5.4上使用Python 2.7.7（Anaconda发行版，尽管在vanilla安装上也是如此）。我能够导入它并初始化与MySQL服务器的连接（v4.1.20）。此服务器通过LAN访问，而不是本地访问。 is_connected()方法断言我已正确连接

>>> import mysql.connector 
>>> cnx = mysql.connector.connect(<MySQL database information here>) 
>>> cursor = cnx.cursor()
>>> cnx.is_connected() 
True

但是，每当我尝试直接通过游标命令（例如cursor.execute("SELECT DATABASE();")）或间接通过mysql.connector方法（例如get_database()）执行任何SQL查询时，我都会获得相同的查询错误，如下：

>>> cnx.get_database() 
Traceback (most recent call last): 
File "<stdin>", line 1, in <module> 
File "/home/bgrande/software/genesis/anaconda-2.0.1/lib/python2.7/site-packages/mysql/connector/connection.py", line 1200, in get_database 
return self._info_query("SELECT DATABASE()")[0] 
File "/home/bgrande/software/genesis/anaconda-2.0.1/lib/python2.7/site-packages/mysql/connector/connection.py", line 1434, in _info_query 
cursor.execute(query) 
File "/home/bgrande/software/genesis/anaconda-2.0.1/lib/python2.7/site-packages/mysql/connector/cursor.py", line 494, in execute 
self._handle_result(self._connection.cmd_query(stmt)) 
File "/home/bgrande/software/genesis/anaconda-2.0.1/lib/python2.7/site-packages/mysql/connector/connection.py", line 683, in cmd_query 
statement)) 
File "/home/bgrande/software/genesis/anaconda-2.0.1/lib/python2.7/site-packages/mysql/connector/connection.py", line 612, in _handle_result 
eof = self._handle_eof(self._socket.recv()) 
File "/home/bgrande/software/genesis/anaconda-2.0.1/lib/python2.7/site-packages/mysql/connector/connection.py", line 554, in _handle_eof 
eof = self._protocol.parse_eof(packet) 
File "/home/bgrande/software/genesis/anaconda-2.0.1/lib/python2.7/site-packages/mysql/connector/protocol.py", line 252, in parse_eof 
raise errors.InterfaceError(err_msg) 
mysql.connector.errors.InterfaceError: Failed parsing EOF packet.

在此之后，似乎与MySQL服务器的连接丢失了。另一次尝试运行get_database()会返回以下错误：

>>> cnx.get_database() 
Traceback (most recent call last): 
File "<stdin>", line 1, in <module> 
File "/home/bgrande/software/genesis/anaconda-2.0.1/lib/python2.7/site-packages/mysql/connector/connection.py", line 1200, in get_database 
return self._info_query("SELECT DATABASE()")[0] 
File "/home/bgrande/software/genesis/anaconda-2.0.1/lib/python2.7/site-packages/mysql/connector/connection.py", line 1433, in _info_query 
cursor = self.cursor(buffered=True) 
File "/home/bgrande/software/genesis/anaconda-2.0.1/lib/python2.7/site-packages/mysql/connector/connection.py", line 1328, in cursor 
raise errors.OperationalError("MySQL Connection not available.") 
mysql.connector.errors.OperationalError: MySQL Connection not available.

is_connected()方法证实了这一点。

>>> cnx.is_connected() 
False

另外，我应该提到在这个局域网上的另一台计算机上使用类似的设置（CentOS 5.5; Python 2.7.6），我已成功使用MySQLdb模块与数据库进行交互。然而，与mysql.connector模块完全相同的Python安装不能（由于相同的错误）。我试图在这里提到的第一台计算机上安装MySQLdb，但我遇到了问题。我认为MySQL Connector / Python可以更容易地工作。

我担心这很难重现，因为它可能取决于我的具体环境。尽管如此，我还是希望能够采取措施缩小问题所在的范围。谢谢！

MySQL Connector / Python InterfaceError：“解析EOF数据包失败”

0 个答案: