我开始了我的第一个python-django项目，像任何初学者一样，我已经遇到了一个错误2天了。当我运行我的服务器时，我得到错误：

Exception in thread django-main-thread:
Traceback (most recent call last):
  File "C:\Python311\Lib\threading.py", line 1038, in _bootstrap_inner
    self.run()
  File "C:\Python311\Lib\threading.py", line 975, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Python311\Lib\site-packages\django\utils\autoreload.py", line 64, in wrapper
    fn(*args, **kwargs)
  File "C:\Python311\Lib\site-packages\django\core\management\commands\runserver.py", line 133, in inner_run
    self.check(display_num_errors=True)
  File "C:\Python311\Lib\site-packages\django\core\management\base.py", line 485, in check
    all_issues = checks.run_checks(
                 ^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\django\core\checks\registry.py", line 88, in run_checks
    new_errors = check(app_configs=app_configs, databases=databases)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\django\core\checks\urls.py", line 14, in check_url_config
    return check_resolver(resolver)
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\django\core\checks\urls.py", line 24, in check_resolver
    return check_method()
           ^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\django\urls\resolvers.py", line 494, in check
    for pattern in self.url_patterns:
                   ^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\django\utils\functional.py", line 57, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
                                         ^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\django\urls\resolvers.py", line 715, in url_patterns
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
                       ^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\django\utils\functional.py", line 57, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
                                         ^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\django\urls\resolvers.py", line 708, in urlconf_module
    return import_module(self.urlconf_name)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\importlib\__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1206, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1178, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1149, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 940, in exec_module
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "C:\Users\rt-enterprises\OneDrive\RTSOFTT\PROJECTS\Python Projects\JT_ORDER-FILES\JT_Order\JT_Order\urls.py", line 22, in <module>
    path(r'^',include('JTOrderApp.urls')),
              ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\site-packages\django\urls\conf.py", line 38, in include
    urlconf_module = import_module(urlconf_module)
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Python311\Lib\importlib\__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1206, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1178, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1149, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 940, in exec_module
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "C:\Users\rt-enterprises\OneDrive\RTSOFTT\PROJECTS\Python Projects\JT_ORDER-FILES\JT_Order\JTOrderApp\urls.py", line 4, in <module>
    from .views import companyApi
  File "C:\Users\rt-enterprises\OneDrive\RTSOFTT\PROJECTS\Python Projects\JT_ORDER-FILES\JT_Order\JTOrderApp\views.py", line 6, in <module>
    from JTOrderApp import Companies, Supplies, Drivers, Camions, Products, Measures, Orders
ImportError: cannot import name 'Companies' from 'JTOrderApp' (C:\Users\rt-enterprises\OneDrive\RTSOFTT\PROJECTS\Python Projects\JT_ORDER-FILES\JT_Order\JTOrderApp\__init__.py)

我的环境：

asgiref             3.6.0
charset-normalizer  3.1.0
Django              4.2
django-cors-headers 3.14.0
djangorestframework 3.14.0
idna                3.4
mysqlclient         2.1.1
pip                 22.3.1
pytz                2023.3
setuptools          65.5.0
sqlparse            0.4.3
tzdata              2023.3
urllib3             1.26.15

这是我的URL。py**file：

from django.urls import path
from JTOrderApp import views
urlpattern=[
    path(r'^company$', views.companyApi),
    path(r'^company/([0-9]+)$',views.companyApi)
]

和JTOrderApp。url. py

from django.contrib import admin
from django.urls import path,include
urlpatterns = [
    path('admin/', admin.site.urls),
    path(r'^',include('JTOrderApp.urls')),
]

我的views.py文件

@csrf_exempt
def companyApi(request, id=0):
    if request.method=='GET':
        companies = Companies.objects.all()
        companies_serializer=CompanySerializers(companies,many=True)
        return JsonResponse(companies_serializer.data,safe=False)
    elif request.method=='POST':
        company_data=JSONParser().parse(request)
        companies_serializer=CompanySerializers(data=company_data)
        if companies_serializer.is_valid():
            companies_serializer.save()
            return JsonResponse("Ajouté avec succès",safe=False)
        return JsonResponse("Erreur d'ajout",safe=False)
    elif request.method=='PUT':
        company_data=JSONParser().parse(request)
        company = Companies.objects.get(CompanyId=company_data['CompanyId'])
        companies_serializer=CompanySerializers(company,data=company_data)
        if companies_serializer.is_valid():
            companies_serializer.save()
            return JsonResponse("Mise à jour avec succès",safe=False)
        return JsonResponse("Erreur de mise jour",safe=False)               
    elif request.method=='DELETE':
        company = Companies.objects.get(CompanyId=id)
        company.delete()
        return JsonResponse("Elément supprimé avec succès",safe=False)

最后是我的设置。pyfile：

INSTALLED_APPS = [
    # 'JTOrderApp.apps.JtorderappConfig',
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'rest_framework',
    'corsheaders',
    'JTOrderApp',
]

以下是我的项目的结构：x1c 0d1x请问错误的原因是什么？先谢谢你了。

您的项目文件夹结构正常。过去和现在仍然令人困惑的是你的网址。py文件。我想你把它们颠倒了。
我认为，错误的原因是您的JTOrderApp.www.example中的循环导入 www.example.com**你正在做path(r'^',include('JTOrderApp.urls')),，换句话说，你正在导入JTOrderApp的网址到JTOrderApp的网址。py文件。

解决方案：

将 this 设为您的JT_Order。url. py

from django.contrib import admin
from django.urls import path,include
urlpatterns = [
    path('admin/', admin.site.urls),
    path(r'^',include('JTOrderApp.urls')),
]

并将以下内容设置为您的JTOrderApp。urls.py：

from django.urls import path
from JTOrderApp import views
urlpattern=[
    path(r'^company$', views.companyApi),
    path(r'^company/([0-9]+)$',views.companyApi)
]

建议：当开始一个新项目时，我总是调用项目config，如

django-admin startproject config .

因为所有的配置文件都在那里（设置。py）和 root url。

2条答案

按热度按时间

k10s72fa1#

赞(0）回复(0）举报 2023-05-01

bvjveswy2#

我找到了解决问题的办法。首先我改变了

www.example.com

from django.urls import re_path
from JTOrderApp import views
urlpattern=[
    re_path(r'^company$', views.companyApi),
    re_path(r'^company/([0-9]+)$',views.companyApi)
]

我 www.example. com 文件还：

from django.contrib import admin
from django.urls import path,re_path,include
urlpatterns = [
    path('admin/', admin.site.urls),
    re_path(r'^',include('JTOrderApp.urls')),
]

因此，在我使用r '^'的地方，我使用re_path而不是path来避免错误。
第二，这就是我的问题所在;我的模型导入在我的serializers.py文件中不好，我把from JTOrderApp import Companies改为from JTOrderApp.models import Companies（新手错误，导入时要小心）。现在一切都很好，我感谢你们所有人的干预，帮助我找到了解决办法。

线程django-main-thread异常：追溯(最近一次调用)：

2条答案

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