TypeError: 'NoneType' 对象不可下标，随后出现 AttributeError: 'NoneType' 对象没有属性 'split'
2017-09-22
11997
使用 django。我有以下模型：
class Postagem(models.Model):
id = models.AutoField(primary_key=True, editable=False)
descricao = models.CharField(max_length=50)
area = models.ForeignKey('core.Area', null=True)
user = models.ForeignKey('User')
categoria = models.CharField(max_length=50, null=True)
post = models.FileField(upload_to='posts/', null=True)
thumbnail = models.FileField(upload_to='posts/', null=True)
def __str__(self):
return self.descricao
以下表格：
class PostForm(forms.ModelForm):
categoria = forms.ChoiceField(choices=[("Video","Vídeo"),("Audio","Aúdio"),("Imagem","Imagem"),("Musica","Música")], required=True)
thumbnail = forms.FileField(required=False)
class Meta:
model = Postagem
fields = ['descricao', 'area', 'user', 'post']
视图：
def profileView(request):
context = getUserContext(request)
if request.method == 'POST':
exception=None
userDict = {}
userDict["user"] = context["user"].id
if "categoria" in request.POST:
newPost = request.POST.copy()
newPost.update(userDict)
form = PostForm(newPost,request.FILES)
print("postform POST: ",newPost, " File ",request.FILES)
if form.is_valid():
print("valid")
try:
form.save()
print("saved")
return HttpResponseRedirect(reverse_lazy('accounts:profile'))
except IntegrityError as e:
print("Integrity Error")
exception=e
else:
print("PostForm error")
print(form.errors)
form.non_field_errors=form.errors
if exception is not None:
form.non_field_errors.update(exception)
context['form']=form
posts = Postagem.objects.get_queryset().order_by('id')
paginator = Paginator(posts, 12)
page = request.GET.get('page')
context["areas"] = Area.objects.all()
try:
posts = paginator.page(page)
except PageNotAnInteger:
# If page is not an integer, deliver first page.
posts = paginator.page(1)
except EmptyPage:
# If page is out of range (e.g. 9999), deliver last page of results.
posts = paginator.page(paginator.num_pages)
context["posts"]=posts
return render(
request,
'accounts/profile.html',
context
)
最后是模板：
{% for post in posts %}
{% if forloop.counter0|divisibleby:4 or forloop.counter0 == 0 %}
<div id="grid-profile" class="row grid">
<div class="col-md-1"></div>
{% endif %}
{% ifnotequal post.categoria "Imagem"%}
<iframe id=post{{forloop.counter}} width="420" height="315"
src={{post.post.url}}>
</iframe>
{% else %}
<div class="col-md-2">
<button type="button" id="modal1trigger" data-toggle="modal" data-target="#modal1"><img class="img-responsive" src={{post.post.url}}></img></button>
</div>
{% endifnotequal %}
{% if forloop.counter|divisibleby:4 or forloop.counter == posts|length %}
<div class="col-md-1"></div>
</div>
{% endif %}
{% endfor %}
<div class="pagination">
<span class="step-links">
{% if posts.has_previous %}
<a href="?page={{ posts.previous_page_number }}">previous</a>
{% endif %}
<span class="current">
Page {{ posts.number }} of {{ posts.paginator.num_pages }}.
</span>
{% if posts.has_next %}
<a href="?page={{ posts.next_page_number }}">next</a>
{% endif %}
</span>
</div>
我剪切了一些模板...无论如何，我希望能够添加各种帖子。歌曲、视频、图像、文档等。而且它确实有效。帖子正在添加。但是，我遇到了一个重复的错误，我不知道为什么。这可能非常危险，所以我开始研究它，但没有找到可接受的答案。 只有在尝试获取歌曲或视频时才会发生错误。
[21/Sep/2017 23:32:44] "GET /media/posts/13567830_1641362072853439_1924036772_n.mp4 HTTP/1.1" 200 1171456
Traceback (most recent call last):
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 138, in run
self.finish_response()
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 180, in finish
_response
self.write(data)
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 279, in write
self._write(data)
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 453, in _write
result = self.stdout.write(data)
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\socketserver.py", line 775, in write
self._sock.sendall(b)
ConnectionResetError: [WinError 10054] Foi forçado o cancelamento de uma conexão existente pelo host remoto
[21/Sep/2017 23:32:44] "GET /media/posts/13567830_1641362072853439_1924036772_n.mp4 HTTP/1.1" 500 59
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 53113)
Traceback (most recent call last):
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 138, in run
self.finish_response()
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 180, in finish
_response
self.write(data)
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 279, in write
self._write(data)
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 453, in _write
result = self.stdout.write(data)
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\socketserver.py", line 775, in write
self._sock.sendall(b)
ConnectionResetError: [WinError 10054] Foi forçado o cancelamento de uma conexão existente pelo host remoto
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 141, in run
self.handle_error()
File "C:\Users\eduardo\Envs\ProExC\lib\site-packages\django\core\servers\basehttp.py", line 88, in handle_erro
r
super(ServerHandler, self).handle_error()
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 368, in handle
_error
self.finish_response()
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 180, in finish
_response
self.write(data)
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 274, in write
self.send_headers()
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 331, in send_h
eaders
if not self.origin_server or self.client_is_modern():
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 344, in client
_is_modern
return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
TypeError: 'NoneType' object is not subscriptable
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\socketserver.py", line 639, in process_re
quest_thread
self.finish_request(request, client_address)
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\socketserver.py", line 361, in finish_req
uest
self.RequestHandlerClass(request, client_address, self)
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\socketserver.py", line 696, in __init__
self.handle()
File "C:\Users\eduardo\Envs\ProExC\lib\site-packages\django\core\servers\basehttp.py", line 155, in handle
handler.run(self.server.get_app())
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 144, in run
self.close()
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\simple_server.py", line 35, in cl
ose
self.status.split(' ',1)[0], self.bytes_sent
AttributeError: 'NoneType' object has no attribute 'split'
----------------------------------------
[21/Sep/2017 23:32:44] "GET /media/posts/03_-_The_Mute.mp3 HTTP/1.1" 200 1179648
Traceback (most recent call last):
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 138, in run
self.finish_response()
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 180, in finish
_response
self.write(data)
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 279, in write
self._write(data)
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 453, in _write
result = self.stdout.write(data)
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\socketserver.py", line 775, in write
self._sock.sendall(b)
ConnectionResetError: [WinError 10054] Foi forçado o cancelamento de uma conexão existente pelo host remoto
[21/Sep/2017 23:32:44] "GET /media/posts/03_-_The_Mute.mp3 HTTP/1.1" 500 59
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 53114)
Traceback (most recent call last):
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 138, in run
self.finish_response()
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 180, in finish
_response
self.write(data)
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 279, in write
self._write(data)
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 453, in _write
result = self.stdout.write(data)
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\socketserver.py", line 775, in write
self._sock.sendall(b)
ConnectionResetError: [WinError 10054] Foi forçado o cancelamento de uma conexão existente pelo host remoto
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 141, in run
self.handle_error()
File "C:\Users\eduardo\Envs\ProExC\lib\site-packages\django\core\servers\basehttp.py", line 88, in handle_erro
r
super(ServerHandler, self).handle_error()
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 368, in handle
_error
self.finish_response()
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 180, in finish
_response
self.write(data)
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 274, in write
self.send_headers()
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 331, in send_h
eaders
if not self.origin_server or self.client_is_modern():
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 344, in client
_is_modern
return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
TypeError: 'NoneType' object is not subscriptable
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\socketserver.py", line 639, in process_re
quest_thread
self.finish_request(request, client_address)
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\socketserver.py", line 361, in finish_req
uest
self.RequestHandlerClass(request, client_address, self)
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\socketserver.py", line 696, in __init__
self.handle()
File "C:\Users\eduardo\Envs\ProExC\lib\site-packages\django\core\servers\basehttp.py", line 155, in handle
handler.run(self.server.get_app())
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\handlers.py", line 144, in run
self.close()
File "c:\users\eduardo\appdata\local\programs\python\python36-32\Lib\wsgiref\simple_server.py", line 35, in cl
ose
self.status.split(' ',1)[0], self.bytes_sent
AttributeError: 'NoneType' object has no attribute 'split'
---------------------------------------
编辑：
使用 Django 1.11.3、 Windows 10、 使用 Opera 和 Chrome 测试、 使用 gulp 运行服务器
**编辑 2：**
嘿，错误 仅当 html 中有 iframe 标记时才会发生 ！
3个回答
看起来这是一个 python 错误：
Django 票证： https://code.djangoproject.com/ticket/26995 Python 票证： https://bugs.python.org/issue14574
目前还没有解决，如果可以的话我会编辑这个答案，详细解释如何解决它。
编辑
这似乎是 chrome 上的错误。我没有发现，因为我使用的是 Opera，但 opera 也使用 chromium。在 Internet Explorer 中，错误没有显示。
https://code.djangoproject.com/ticket/21227#no1
这是错误跟踪器
EduardoMaia
2017-09-28
第一个错误
self.environ['SERVER_PROTOCOL'].upper()
失败，因为 self.environ['SERVER_PROTOCOL'] 为 None，而您无法执行 None.upper()，您只能对字符串执行 .upper()（据我所知）。
第二个错误
self.status.split(' ',1)[0], self.bytes_sent
AttributeError: 'NoneType' 对象没有属性 'split'
此操作失败，因为您的 self.status 为 None，而您无法执行 None.split()，这同样应该是一个字符串。
因此，这些类所需的一些值似乎没有被初始化或传递。
问题似乎出在 Django.core 和 WSGIref 上，因此要么是配置不正确，要么是版本问题您安装了什么？
您运行的是哪个版本的 Django？
您还从
./manage.py runserver
运行服务器吗？
[更新 2017-09-28]
我修改了几件事，首先我没有在传递 request.POST 之前将其复制到新的字典中，这可能是尝试处理帖子时某些值消失的原因。
我还将用户作为 kwarg 传递给您的表单，而不是尝试将其注入到复制的 POST 中。
主要是我只是更新了一些代码，使其更易于阅读，让我们看看效果如何。
# forms.py
class PostForm(forms.ModelForm):
categoria = forms.ChoiceField(choices=[("Video","Vídeo"),("Audio","Aúdio"),("Imagem","Imagem"),("Musica","Música")], required=True)
thumbnail = forms.FileField(required=False)
class Meta:
model = Postagem
fields = ['descricao', 'area', 'user', 'post']
def __init__(self, *args, **kwargs): # handle user kwarg
if 'user' in kwargs.keys():
self.user = kwargs.pop('user')
super(PostForm, self).__init__(*args, **kwargs)
# views.py
def profileView(request):
form = None
if request.method == 'POST':
exception=None
if "categoria" in request.POST:
if request.user:
form = PostForm(request.POST,request.FILES, user=request.user) # pass user as a kwarg
print("postform POST: ",newPost, " File ",request.FILES)
if form.is_valid():
print("valid")
try:
form.save()
print("saved")
return HttpResponseRedirect(reverse_lazy('accounts:profile'))
except IntegrityError as e:
print("Integrity Error")
exception=e
else:
print("PostForm error")
print(form.errors)
#form has been indented as previously it would have been called before being initialised
form.non_field_errors=form.errors
if exception is not None:
form.non_field_errors.update(exception)
posts = Postagem.objects.get_queryset().order_by('id')
paginator = Paginator(posts, 12)
page = None
if request.GET:
page = request.GET.get('page')
areas = Area.objects.all()
try:
posts = paginator.page(page)
except PageNotAnInteger:
# If page is not an integer, deliver first page.
posts = paginator.page(1)
except EmptyPage:
# If page is out of range (e.g. 9999), deliver last page of results.
posts = paginator.page(paginator.num_pages)
#return values
return render(
request,
'accounts/profile.html',
{
'form': form,
'areas': areas,
'posts': posts,
}
)
BenDog
2017-09-22
您使用的是 PostgreSQL 吗？这可能是由 代码页错误 引起的。
C:\>psql -U postgres
psql (10.5)
WARNING: Console code page (850) differs from Windows code page (1252)
8-bit characters might not work correctly. See psql reference
page "Notes for Windows users" for details.
Type "help" for help.
postgres=#
尝试在启动 Django 之前设置代码页。
cmd.exe /c chcp 1252
Karl Penzhorn
2019-03-08