Question

我收到类型错误，显示＆＃34;不是JSON可序列化的＃34;。添加会话相关代码后，会出现此错误。

views.py

def jlogin(request):
    if request.method == 'POST':
        username = request.POST['uname']
        password = request.POST['pword']
        user = authenticate(username=username, password=password)
        if user is not None:
            login(request,user)
            print(user)
            request.session['user']=user
            return redirect('/feeds/')
        else:
            return render(request,'join/login.html')
    else:
        user = request.session.get('user')
        print(user)
        if user is None:
            return render(request,'join/login.html')
        else:
            return render(request,'feeds/feeds.html')

login.html

<!DOCTYPE html>
<html>
<head>
    <title>Login to dEEPsIGMA</title>
</head>
<body>
<form action="." method="post" enctype="multipart/form-data">
    {% csrf_token %}
    Username :
    <input type="text" name="uname"/> <br>
    Password :
    <input type="text" name ="pword"/>
    <input type="submit">

</form>
</body>
</html>

回溯：

File "C:\Python27\lib\site-packages\django-1.8-py2.7.egg\django\core\handlers\base.py" in get_response
  207.                 response = middleware_method(request, response)
File "C:\Python27\lib\site-packages\django-1.8-py2.7.egg\django\contrib\sessions\middleware.py" in process_response
  49.                         request.session.save()
File "C:\Python27\lib\site-packages\django-1.8-py2.7.egg\django\contrib\sessions\backends\db.py" in save
  58.             session_data=self.encode(self._get_session(no_load=must_create)),
File "C:\Python27\lib\site-packages\django-1.8-py2.7.egg\django\contrib\sessions\backends\base.py" in encode
  89.         serialized = self.serializer().dumps(session_dict)
File "C:\Python27\lib\site-packages\django-1.8-py2.7.egg\django\core\signing.py" in dumps
  89.         return json.dumps(obj, separators=(',', ':')).encode('latin-1')
File "C:\Python27\lib\json\__init__.py" in dumps
  250.         sort_keys=sort_keys, **kw).encode(obj)
File "C:\Python27\lib\json\encoder.py" in encode
  207.         chunks = self.iterencode(o, _one_shot=True)
File "C:\Python27\lib\json\encoder.py" in iterencode
  270.         return _iterencode(o, 0)
File "C:\Python27\lib\json\encoder.py" in default
  184.         raise TypeError(repr(o) + " is not JSON serializable")

Exception Type: TypeError at /
Exception Value: <User: user1> is not JSON serializable

请帮助解决此错误。解释发生此错误的原因。

Answer 1

产生错误的行是：

request.session['user']=user

Django在版本1.6之后一直使用JSON来序列化会话数据。关于Django documentation的更多信息。用户对象不是JSON可序列化的。因此，您需要确保存储在会话变量中的对象应该是JSON可序列化的。在Django 1.6之前，Django使用的序列化程序是PickleSerializer，你的代码可以完美运行。

要使代码正常工作，您可以执行以下操作之一：

存储用户的ID而不是User对象。
Create your own serializer for User object。

Django：/ <user：user1 =“”>的类型错误不是JSON可序列化的</user：>

1 个答案: