Django static仅在开发时失败？

部署的站点工作得很好！但是，当我运行开发服务器时，它不会加载静态数据。访问时

localhost:9090/static 

它返回404未找到页面，并显示：

Directory indexes are not allowed here.

请帮忙

STATIC_ROOT = '/var/mysite/static/'
STATIC_URL = '/static/
DEBUG = True

尝试：

-collectstatic method
-adding static_dir & urlpatterns += staticfiles_urlpatterns()

---

我是Django新手，但我的设置（和静态文件工作）中有以下内容： （我的项目顶部目录中有一个名为static的文件夹）

在URL.py中

from django.conf.urls.static import static
from django.contrib.staticfiles.urls import staticfiles_urlpatterns
from yourprojectname import settings
from django.views.generic.base import TemplateView

urlpatterns = patterns('',
    # url(r'^$', 'yourprojectname.views.home', name='home'),
    # url(r'^blog/$', blog),
)

urlpatterns += staticfiles_urlpatterns()

在settings.py中

PROJECT_DIR = os.path.abspath(os.path.dirname(__file__))

STATIC_ROOT = os.path.join(PROJECT_DIR,'static')
STATIC_URL = '/static/'

STATICFILES_DIRS = (
    os.path.join(PROJECT_DIR,'static'), # if you name your static files folder is named as 'static'
)
TEMPLATE_DIRS = (
    os.path.join(PROJECT_DIR,'template'),
)

PROJECT_DIR = os.path.abspath(os.path.dirname(__file__))

STATIC_ROOT = os.path.join(PROJECT_DIR,'static')
STATIC_URL = '/static/'

STATICFILES_DIRS = (
    os.path.join(PROJECT_DIR,'static'), # if you name your static files folder is named as 'static'
)
TEMPLATE_DIRS = (
    os.path.join(PROJECT_DIR,'template'),
)