wait_timeout
超过了。我准备好了
等待超时
在
10
所以我可以试试这个。
这是我的密码:
def select(self, query, params=[]):
try:
self.cursor = self.cxn.cursor()
self.cursor.execute(query, params)
except MySQLdb.OperationalError, e:
if e[0] == 2006:
print "We caught the exception properly!"
print self.cxn
self.cxn.close()
self.cxn = self.db._get_cxn()
self.cursor = self.cxn.cursor()
self.cursor.execute(query, params)
print self.cxn
return self.cursor.fetchall()
接下来,我等了十秒钟,试图提出一个请求。下面是CherryPy的样子:
[31/Dec/2009:20:47:29] ENGINE Bus STARTING
[31/Dec/2009:20:47:29] ENGINE Starting database pool...
[31/Dec/2009:20:47:29] ENGINE POOL Connecting to MySQL...
[31/Dec/2009:20:47:29] ENGINE POOL Connecting to MySQL...
[31/Dec/2009:20:47:29] ENGINE POOL Connecting to MySQL...
[31/Dec/2009:20:47:29] ENGINE POOL Connecting to MySQL...
[31/Dec/2009:20:47:29] ENGINE POOL Connecting to MySQL...
[31/Dec/2009:20:47:29] ENGINE Started monitor thread '_TimeoutMonitor'.
[31/Dec/2009:20:47:29] ENGINE Started monitor thread 'Autoreloader'.
[31/Dec/2009:20:47:30] ENGINE Serving on 0.0.0.0:8888
[31/Dec/2009:20:47:30] ENGINE Bus STARTED
We caught the exception properly! <====================================== Aaarg!
<_mysql.connection open to 'localhost' at 1ee22b0>
[31/Dec/2009:20:48:25] HTTP Traceback (most recent call last):
File "/usr/local/lib/python2.6/dist-packages/CherryPy-3.1.2-py2.6.egg/cherrypy/_cprequest.py", line 606, in respond
cherrypy.response.body = self.handler()
File "/usr/local/lib/python2.6/dist-packages/CherryPy-3.1.2-py2.6.egg/cherrypy/_cpdispatch.py", line 25, in __call__
return self.callable(*self.args, **self.kwargs)
File "adp.py", line 69, in reports
page.sources = sql.GetSources()
File "/home/swoods/dev/adp/sql.py", line 45, in __call__
return getattr(self.formatter.cxn, parsefn)(sql, sql_vars)
File "/home/swoods/dev/adp/database.py", line 96, in select
self.cursor.execute(query, params)
File "/usr/lib/pymodules/python2.6/MySQLdb/cursors.py", line 166, in execute
self.errorhandler(self, exc, value)
File "/usr/lib/pymodules/python2.6/MySQLdb/connections.py", line 35, in defaulterrorhandler
raise errorclass, errorvalue
OperationalError: (2006, 'MySQL server has gone away')
[31/Dec/2009:20:48:25] HTTP
Request Headers:
COOKIE: session_id=e14f63acc306b26f14d966e606612642af2dd423
HOST: localhost:8888
CACHE-CONTROL: max-age=0
ACCEPT: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
ACCEPT-CHARSET: ISO-8859-1,utf-8;q=0.7,*;q=0.3
USER-AGENT: Mozilla/5.0 (X11; U; Linux x86_64; en-US) AppleWebKit/532.5 (KHTML, like Gecko) Chrome/4.0.249.43 Safari/532.5
CONNECTION: keep-alive
Remote-Addr: 127.0.0.1
ACCEPT-LANGUAGE: en-US,en;q=0.8
ACCEPT-ENCODING: gzip,deflate
127.0.0.1 - - [31/Dec/2009:20:48:25] "GET /reports/1 HTTP/1.1" 500 1770 "" "Mozilla/5.0 (X11; U; Linux x86_64; en-US) AppleWebKit/532.5 (KHTML, like Gecko) Chrome/4.0.249.43 Safari/532.5"
为什么这不管用??很明显,我捕捉到了异常,重新生成了连接和光标,但它仍然不起作用。它是否与MySQLdb获取连接的方式有关?
