如果启用调试,Django静态文件将停止工作

urlpatterns = patterns('',# Examples:
    url(r'^$','core.views.homepage',name='homepage'),url(r'^static/(?P<path>.*)$','django.views.static.serve',{'document_root': settings.STATIC_ROOT}),)

那是我的urls.py

如果我禁用DEBUG,静态文件可以正常工作,如果我重新打开它,则不起作用.

我的部分设置

STATIC_ROOT = os.path.join(PROJECT_ROOT,'static')

# URL prefix for static files.
# Example: "http://media.lawrence.com/static/"
STATIC_URL = '/static/'

# URL prefix for admin static files -- CSS,JavaScript and images.
# Make sure to use a trailing slash.
# Examples: "http://foo.com/static/admin/","/static/admin/".
ADMIN_MEDIA_PREFIX = '/static/admin/'

# Additional locations of static files
STATICFILES_DIRS = (

    # Put strings here,like "/home/html/static" or "C:/www/django/static".
    # Always use forward slashes,even on Windows.
    # Don't forget to use absolute paths,not relative paths.
)

# List of finder classes that know how to find static files in
# various locations.
STATICFILES_FINDERS = (
    'django.contrib.staticfiles.finders.FileSystemFinder','django.contrib.staticfiles.finders.AppDirectoriesFinder',#    'django.contrib.staticfiles.finders.DefaultStorageFinder',)

对我来说真的很奇怪,任何人都可以帮忙吗？