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我想從Django 1.5.5升級到Django 1.6。一切都很好測試，但是當我嘗試運行我的django項目時，出現以下錯誤：Django 1.6升級：「無法導入名稱BaseHandler」
ValueError: Unable to configure handler 'mail_admins': Cannot resolve 'vbenergyzone.core.utils.log.StaffSuperuserEmailHandler': cannot import name BaseHandler
爲什麼？
這是我曾嘗試：
- 我已經完全打消了我的自定義日誌處理程序代碼。該項目運行良好，沒有任何錯誤。
- 我已經替換了我的自定義日誌記錄處理程序代碼並將其替換爲默認的處理程序代碼。我犯了同樣的錯誤。
- 我試過Django 1.6c1，並得到相同的錯誤。
- 我已經創建了一張票：https://code.djangoproject.com/ticket/21502。
這裏是我的堆棧跟蹤：
20:29:03 web.1 | started with pid 1501
20:29:03 worker.1 | started with pid 1504
20:29:03 web.1 | 2013-11-23 20:29:03 [1503] [INFO] Starting gunicorn 18.0
20:29:03 web.1 | 2013-11-23 20:29:03 [1503] [INFO] Listening at: http://192.168.50.4:5000 (1503)
20:29:03 web.1 | 2013-11-23 20:29:03 [1503] [INFO] Using worker: sync
20:29:03 web.1 | 2013-11-23 20:29:03 [1518] [INFO] Booting worker with pid: 1518
20:29:04 web.1 | 2013-11-23 14:29:04 [1518] [ERROR] Exception in worker process:
20:29:04 web.1 | Traceback (most recent call last):
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/gunicorn/arbiter.py", line 495, in spawn_worker
20:29:04 web.1 | worker.init_process()
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/gunicorn/workers/base.py", line 106, in init_process
20:29:04 web.1 | self.wsgi = self.app.wsgi()
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/gunicorn/app/base.py", line 114, in wsgi
20:29:04 web.1 | self.callable = self.load()
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/gunicorn/app/wsgiapp.py", line 62, in load
20:29:04 web.1 | return self.load_wsgiapp()
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/gunicorn/app/wsgiapp.py", line 49, in load_wsgiapp
20:29:04 web.1 | return util.import_app(self.app_uri)
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/gunicorn/util.py", line 354, in import_app
20:29:04 web.1 | __import__(module)
20:29:04 web.1 | File "/vagrant/vbenergyzone/wsgi.py", line 23, in <module>
20:29:04 web.1 | from django.core.wsgi import get_wsgi_application
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/django/core/wsgi.py", line 1, in <module>
20:29:04 web.1 | from django.core.handlers.wsgi import WSGIHandler
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/django/core/handlers/wsgi.py", line 11, in <module>
20:29:04 web.1 | from django.core.handlers import base
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 12, in <module>
20:29:04 web.1 | from django.db import connections, transaction
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/django/db/__init__.py", line 83, in <module>
20:29:04 web.1 | signals.request_started.connect(reset_queries)
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/django/dispatch/dispatcher.py", line 88, in connect
20:29:04 web.1 | if settings.DEBUG:
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/django/conf/__init__.py", line 54, in __getattr__
20:29:04 web.1 | self._setup(name)
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/django/conf/__init__.py", line 50, in _setup
20:29:04 web.1 | self._configure_logging()
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/django/conf/__init__.py", line 80, in _configure_logging
20:29:04 web.1 | logging_config_func(self.LOGGING)
20:29:04 web.1 | File "/usr/lib/python2.7/logging/config.py", line 777, in dictConfig
20:29:04 web.1 | dictConfigClass(config).configure()
20:29:04 web.1 | File "/usr/lib/python2.7/logging/config.py", line 575, in configure
20:29:04 web.1 | '%r: %s' % (name, e))
20:29:04 web.1 | ValueError: Unable to configure handler 'mail_admins': Cannot resolve 'vbenergyzone.core.utils.log.StaffSuperuserEmailHandler': cannot import name BaseHandler
20:29:04 web.1 | Traceback (most recent call last):
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/gunicorn/arbiter.py", line 495, in spawn_worker
20:29:04 web.1 | worker.init_process()
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/gunicorn/workers/base.py", line 106, in init_process
20:29:04 web.1 | self.wsgi = self.app.wsgi()
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/gunicorn/app/base.py", line 114, in wsgi
20:29:04 web.1 | self.callable = self.load()
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/gunicorn/app/wsgiapp.py", line 62, in load
20:29:04 web.1 | return self.load_wsgiapp()
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/gunicorn/app/wsgiapp.py", line 49, in load_wsgiapp
20:29:04 web.1 | return util.import_app(self.app_uri)
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/gunicorn/util.py", line 354, in import_app
20:29:04 web.1 | __import__(module)
20:29:04 web.1 | File "/vagrant/vbenergyzone/wsgi.py", line 23, in <module>
20:29:04 web.1 | from django.core.wsgi import get_wsgi_application
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/django/core/wsgi.py", line 1, in <module>
20:29:04 web.1 | from django.core.handlers.wsgi import WSGIHandler
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/django/core/handlers/wsgi.py", line 11, in <module>
20:29:04 web.1 | from django.core.handlers import base
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 12, in <module>
20:29:04 web.1 | from django.db import connections, transaction
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/django/db/__init__.py", line 83, in <module>
20:29:04 web.1 | signals.request_started.connect(reset_queries)
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/django/dispatch/dispatcher.py", line 88, in connect
20:29:04 web.1 | if settings.DEBUG:
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/django/conf/__init__.py", line 54, in __getattr__
20:29:04 web.1 | self._setup(name)
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/django/conf/__init__.py", line 50, in _setup
20:29:04 web.1 | self._configure_logging()
20:29:04 web.1 | File "/home/vagrant/.virtualenvs/VBEZ/local/lib/python2.7/site-packages/django/conf/__init__.py", line 80, in _configure_logging
20:29:04 web.1 | logging_config_func(self.LOGGING)
20:29:04 web.1 | File "/usr/lib/python2.7/logging/config.py", line 777, in dictConfig
20:29:04 web.1 | dictConfigClass(config).configure()
20:29:04 web.1 | File "/usr/lib/python2.7/logging/config.py", line 575, in configure
20:29:04 web.1 | '%r: %s' % (name, e))
20:29:04 web.1 | ValueError: Unable to configure handler 'mail_admins': Cannot resolve 'vbenergyzone.core.utils.log.StaffSuperuserEmailHandler': cannot import name BaseHandler
這裏是我的日誌記錄配置：
LOGGING = {
'version': 1,
'disable_existing_loggers': True,
'filters': {
'require_debug_false': {
'()': 'django.utils.log.RequireDebugFalse'
}
},
'formatters': {
'verbose': {
'format': '%(levelname)s %(asctime)s %(module)s %(process)d %(thread)d %(message)s'
},
'simple': {
'format': '%(levelname)s %(message)s'
},
},
'handlers': {
'null': {
'level': 'DEBUG',
'class': 'django.utils.log.NullHandler',
},
'console':{
'level': 'DEBUG',
'class': 'logging.StreamHandler',
'formatter': 'simple'
},
'mail_admins': {
'level': 'ERROR',
# 'class': 'django.utils.log.AdminEmailHandler',
'class': 'vbenergyzone.core.utils.log.StaffSuperuserEmailHandler',
'filters': [],
}
},
'loggers': {
'django': {
'handlers': ['null'],
'propagate': True,
'level': 'INFO',
},
'django.request': {
'handlers': ['mail_admins'],
'level': 'ERROR',
'propagate': True,
},
'vbenergyzone': {
'handlers': ['console', 'mail_admins'],
'level': 'INFO',
}
}
}
這裏是我的自定義記錄器：
"""
Logging utilities
"""
import logging
import traceback
from django.contrib.sites.models import Site
from django.views.debug import get_exception_reporter_filter
from vbenergyzone.core import send_message
# ==============================================================================
class StaffSuperuserEmailHandler(logging.Handler):
def emit(self, record):
try:
request = record.request
domain = Site.objects.get_current().domain
subject = 'User %s experienced an error on %s: %s' % \
(request.user, domain, record.getMessage())
filter = get_exception_reporter_filter(request)
request_repr = filter.get_request_repr(request)
except Exception:
subject = '%s: %s' % (
record.levelname,
record.getMessage(),
)
request = None
request_repr = "Request repr() unavailable."
if record.exc_info:
exc_info = record.exc_info
stack_trace = \
'\n'.join(traceback.format_exception(*record.exc_info))
else:
exc_info = (None, record.getMessage(), None)
stack_trace = 'No stack trace available'
context_object = {
'message': record.getMessage(),
'request': request,
'request_repr': request_repr,
'stack_trace': stack_trace,
}
send_message(
context_object=context_object,
html_template='core/email/staff_super_email_handler.html',
send_to_staff_and_superusers=True,
subject=self.format_subject(subject),
text_template='core/email/staff_super_email_handler.txt',
)
def format_subject(self, subject):
"""
Escape CR and LF characters, and limit length.
RFC 2822's hard limit is 998 characters per line. So, minus "Subject: "
the actual subject must be no longer than 989 characters.
"""
formatted_subject = subject.replace('\n', '\\n').replace('\r', '\\r')
return formatted_subject[:989]