urllib.request 发送 http post 时如何修复 'This QueryDict instance is immutable'

Question

我正在通过 urllib.request 写一个发件人，但在服务器中收到 "This QueryDict instance is immutable"。

当我在服务器代码（django tastypie）中添加 "bundle.request.POST._mutable = True" 时，它已修复。

但我想知道如何通过发件人解决。

python:v3.6 发件人：urllib.request 服务器：django tastypie

发件人：

   cookie = http.cookiejar.MozillaCookieJar()
   handler = urllib.request.HTTPCookieProcessor(cookie)
   opener = urllib.request.build_opener(handler)
   request = urllib.request.Request(url, 
                  data=data,headers=headers,method=method)
   rep = opener.open(request)

服务器错误：

File "/python3.6/site-packages/tastypie/resources.py", line 1408, in post_list
    updated_bundle = self.obj_create(bundle, **self.remove_api_resource_names(kwargs))
  File "/python3.6/site-packages/tastypie/resources.py", line 2244, in obj_create
    bundle = self.full_hydrate(bundle)
  File "/python3.6/site-packages/tastypie/resources.py", line 943, in full_hydrate
    bundle = self.hydrate(bundle)
  File "/home/ma/*/api.py", line 115, in hydrate
    bundle.data["create_by"] = user
  File "/python3.6/site-packages/django/http/request.py", line 421, in __setitem__
    self._assert_mutable()
  File "/python3.6/site-packages/django/http/request.py", line 418, in _assert_mutable
    raise AttributeError("This QueryDict instance is immutable")

Answer 1

我找到一个原因，application/x-www-form-urlencoded -> application/json。

Answer 2

对于那些在从 TestCases 发送有效载荷时在请求中获得 Querydict 类型，但在从前端（例如 React）传递数据时获得 Dict 类型的人 -您可以通过将有效负载作为 JSON 传递来避免处理 Querydict，因此，您的 request.data 将是 'dict'.

类型

例子

payload = {
            "name": "Dict example"
        }

response = self.client.post(ENDPOINT, json.dumps(chat_payload),content_type="application/json"

)

这样，您可以像普通字典一样访问request.data["name"]，使操作更简单。

urllib.request 发送 http post 时如何修复 'This QueryDict instance is immutable'

how to fix 'This QueryDict instance is immutable' when send http post by urllib.request

urllib

python-3.x