Django的無法訪問請求多次

我有視圖編輯用戶配置文件使用Ajax，我檢查請求類型，如果後剛剛獲得JSON數據與request.body。但Django給我一個錯誤：'從請求的數據流中讀取後無法訪問主體'。顯然我只能訪問一個請求數據，所以如何在閱讀正文之前檢查請求類型。這裏被簡化代碼Django的無法訪問請求多次

def edit_profile(request): 
    if request.method == 'POST': 
     name = '' 
     email = '' 
     bio = '' 
     user_profile = User.objects.get(username=request.user.username) 

     try: 
      req_str = request.body.decode('utf-8') 
      req_json = json.loads(req_str) 

      name = req_json['username'] 
      email = req_json['email'] 
      bio = req_json['bio'] 

      if name: 
       user_profile.username = name 
      if email: 
       user_profile.email = email 
      if bio: 
       user_profile.account.bio = bio 

      user_profile.save() 
      user_profile.account.save() 
     except KeyError: 
      print("can't parse json") 
     except Exception as e: 
      print('fialed to proccess request', e) 

     return JsonResponse({ 
      'username': user_profile.username, 
      'email': user_profile.email, 
      'bio': user_profile.account.bio 
     }) 
    else: 
     return HttpResponse('nothing changed')

完整的錯誤信息：

Internal Server Error: /accounts/edit_profile/ 
Traceback (most recent call last): 
    File "/home/void/Projects/workspace/venv/lib/python3.4/site-packages/django/core/handlers/exception.py", line 42, in inner 
    response = get_response(request) 
    File "/home/void/Projects/workspace/venv/lib/python3.4/site-packages/django/core/handlers/base.py", line 187, in _get_response 
    response = self.process_exception_by_middleware(e, request) 
    File "/home/void/Projects/workspace/venv/lib/python3.4/site-packages/django/core/handlers/base.py", line 185, in _get_response 
    response = wrapped_callback(request, *callback_args, **callback_kwargs) 
    File "/home/void/Projects/workspace/workspace/accounts/views.py", line 79, in edit_profile 
    req_str = request.body.decode('utf-8') 
    File "/home/void/Projects/workspace/venv/lib/python3.4/site-packages/django/http/request.py", line 264, in body 
    raise RawPostDataException("You cannot access body after reading from request's data stream") 
django.http.request.RawPostDataException: You cannot access body after reading from request's data stream

來源

2017-04-08 void

該代碼甚至不工作（你是指不同的變量行3和4），但如果它沒有，它不會因爲你要求的錯誤：檢查請求的方法不「讀」的要求。請顯示您使用的*實際*代碼和您得到的完整錯誤。 –

完整的錯誤和追溯在哪裏？ –

可疑的是，這個異常應該已被視圖中的'Exception Exception'行捕獲。不過，您是否有任何可能會干擾的自定義中間件？ –

你的中間件必須要訪問這可能會導致錯誤的request.body，請檢查您的MIDDLEWARE_CLASSES任何自定義/中間件可能被訪問數據。檢查您在中間件中使用的模塊/應用程序是否存在此錯誤。

這裏有一些很好的解釋。 https://stackoverflow.com/a/28641930/3448851

來源

2017-04-08 20:44:59 rrmerugu

Django的無法訪問請求多次

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