python - django 1.11.18 中的 MultiValueDictKeyError

Question

我将 Python 3.7 与 Django 1.11.18 一起使用。我必须连接到 Oracle 11g 数据库，这就是为什么使用 django 的 1.11 版本。下面的代码适用于 django 2.0.7 和 python 3.7，但是当我将我的版本降级到 1.11.18 时，它开始给我错误。

我正在通过 HTML 表单发送发布请求。发布请求具有字段用户名和密码。检索相同的python代码是：-

username = request.POST[‘username’]
password = request.POST[‘password’]

我也试过： -

username = request.POST.get(‘username’, False)

即使通过我的表单传递了有效的值，上面的代码也会选择默认值。知道为什么会发生这种情况以及如何解决它。

编辑：-代码的完整部分如下

视图.py

username = request.POST['username']
password = request.POST['password']
user = authenticate(request, username=username, password=password)
if user is not None:
    login(request)
    request.session['userName'] = username
    return HttpResponse("SUCCESS")
else:
    return HttpResponse("FAILURE")

HTML

                    $( "#loginForm" ).submit(function( event ) {

                        // Stop form from submitting normally
                        event.preventDefault();

                        var jqxhr = $.post( "http://127.0.0.1:8000/ScApp2/xxxx/", $( "#loginForm" ).serialize(), function() {
                        })
                            .done(function( data ) {
                                if( data == "SUCCESS")
                                    window.location.href = 'http://127.0.0.1:8000/ScApp2/home/xxxx.html';
                                else
                                    alert("Please check your username and password and try again.");
                        })
                            .fail(function() {
                            alert( "ERROR : Please contact the Support Team." );
                        });
                    });

追溯：-

[28/Jan/2019 17:12:24] "POST /xxxx/xxxx/ HTTP/1.1" 200 7
Internal Server Error: /xxxx/xxxx/ScorecardApp20/
Traceback (most recent call last):
  File "c:\users\xxxx\xxxx\local\programs\python\python37\lib\site-packages\django\utils\datastructures.py", line 83, in __getitem__
    list_ = super(MultiValueDict, self).__getitem__(key)
KeyError: 'username'

During handling of the above exception, another exception occurred:

    Traceback (most recent call last):
      File "c:\users\xxxx\xxxx\local\programs\python\python37\lib\site-packages\django\core\handlers\exception.py", line 41, in inner
        response = get_response(request)
      File "c:\users\xxxx\xxxx\local\programs\python\python37\lib\site-packages\django\core\handlers\base.py", line 187, in _get_response
        response = self.process_exception_by_middleware(e, request)
      File "c:\users\xxxx\xxxx\local\programs\python\python37\lib\site-packages\django\core\handlers\base.py", line 185, in _get_response
        response = wrapped_callback(request, *callback_args, **callback_kwargs)
      File "C:\PythonWorkspace\xxxx\xxxx\views.py", line 67, in home
        username = request.POST['username']
      File "c:\users\xxxx\xxxx\local\programs\python\python37\lib\site-packages\django\utils\datastructures.py", line 85, in __getitem__
        raise MultiValueDictKeyError(repr(key))
    django.utils.datastructures.MultiValueDictKeyError: "'username'"

标签： pythondjangopython-3.x