Ajax 发布数据未显示在 Django 视图 POST 中

Question

我知道这已经被问过很多次了，我已经查看了之前的所有答案，但是 django 和 ajax 不符合我的要求。常见问题，在我看来，我通过 ajax 帖子发送的数据没有出现在我的请求中，POST 始终为空。其他一切正常，调用视图，返回 json。

我已经尝试了所有的答案，但它仍然不起作用，也许我错过了一些小东西。旁注：我已经为 django 禁用了 csrf，因为我不需要它。

阿贾克斯：

        $.ajax({
            url: '/ping_device',
            type: 'POST',
            data: { 'port': '20' },
            contentType: "application/x-www-form-urlencoded",
            success: function (result) {
                debugger;
                alert("message: " + result.message);
            },
            error: function(data){
                alert('error..');
            }
        })

查看：

def ping_device(request):
    if request.method == "POST":
        test = request.POST.get('port', 'ffs')

        message = "this is a post"
        response_data = {}
        response_data["message"] = message

        return HttpResponse(json.dumps(response_data), content_type="application/json")

编辑我的 settings.py： """

Django settings for BACnetModbus_WebApp project.
"""

from os import path
PROJECT_ROOT = path.dirname(path.abspath(path.dirname(__file__)))

DEBUG = True
TEMPLATE_DEBUG = DEBUG

ALLOWED_HOSTS = (
    'localhost',
)

ADMINS = (
    # ('Your Name', 'your_email@example.com'),
)

MANAGERS = ADMINS

#DATABASES = {
#    'default': {
#        'ENGINE': 'django.db.backends.sqlite3',
#        'NAME': path.join(PROJECT_ROOT, 'db.sqlite3'),
#        'USER': '',
#        'PASSWORD': '',
#        'HOST': '',
#        'PORT': '',
#    }
#}

LOGIN_URL = '/login'

# Local time zone for this installation. Choices can be found here:
# http://en.wikipedia.org/wiki/List_of_tz_zones_by_name
# although not all choices may be available on all operating systems.
# On Unix systems, a value of None will cause Django to use the same
# timezone as the operating system.
# If running in a Windows environment this must be set to the same as your
# system time zone.
TIME_ZONE = 'America/Chicago'

# Language code for this installation. All choices can be found here:
# http://www.i18nguy.com/unicode/language-identifiers.html
LANGUAGE_CODE = 'en-us'

SITE_ID = 1

# If you set this to False, Django will make some optimizations so as not
# to load the internationalization machinery.
USE_I18N = True

# If you set this to False, Django will not format dates, numbers and
# calendars according to the current locale.
USE_L10N = True

# If you set this to False, Django will not use timezone-aware datetimes.
USE_TZ = True

# Absolute filesystem path to the directory that will hold user-uploaded files.
# Example: "/home/media/media.lawrence.com/media/"
MEDIA_ROOT = ''

# URL that handles the media served from MEDIA_ROOT. Make sure to use a
# trailing slash.
# Examples: "http://media.lawrence.com/media/", "http://example.com/media/"
MEDIA_URL = ''

# Absolute path to the directory static files should be collected to.
# Don't put anything in this directory yourself; store your static files
# in apps' "static/" subdirectories and in STATICFILES_DIRS.
# Example: "/home/media/media.lawrence.com/static/"
STATIC_ROOT = path.join(PROJECT_ROOT, 'static').replace('\\', '/')

# URL prefix for static files.
# Example: "http://media.lawrence.com/static/"
STATIC_URL = '/static/'

# Additional locations of static files
STATICFILES_DIRS = (
    # Put strings here, like "/home/html/static" or "C:/www/django/static".
    # Always use forward slashes, even on Windows.
    # Don't forget to use absolute paths, not relative paths.
)

# List of finder classes that know how to find static files in
# various locations.
STATICFILES_FINDERS = (
    'django.contrib.staticfiles.finders.FileSystemFinder',
    'django.contrib.staticfiles.finders.AppDirectoriesFinder',
#    'django.contrib.staticfiles.finders.DefaultStorageFinder',
)

# Make this unique, and don't share it with anybody.
SECRET_KEY = 'n(bd1f1c%e8=_xad02x5qtfn%wgwpi492e$8_erx+d)!tpeoim'

# List of callables that know how to import templates from various sources.
TEMPLATE_LOADERS = (
    'django.template.loaders.filesystem.Loader',
    'django.template.loaders.app_directories.Loader',
#     'django.template.loaders.eggs.Loader',
)

#MIDDLEWARE_CLASSES = (
    #'django.middleware.common.CommonMiddleware',
    #'django.contrib.sessions.middleware.SessionMiddleware',
    #'django.middleware.csrf.CsrfViewMiddleware',
    #'django.contrib.auth.middleware.AuthenticationMiddleware',
    #'django.contrib.messages.middleware.MessageMiddleware',
    # Uncomment the next line for simple clickjacking protection:
    # 'django.middleware.clickjacking.XFrameOptionsMiddleware',
#)

ROOT_URLCONF = 'BACnetModbus_WebApp.urls'

# Python dotted path to the WSGI application used by Django's runserver.
WSGI_APPLICATION = 'BACnetModbus_WebApp.wsgi.application'

TEMPLATE_DIRS = (
    # Put strings here, like "/home/html/django_templates" or
    # "C:/www/django/templates".
    # Always use forward slashes, even on Windows.
    # Don't forget to use absolute paths, not relative paths.
)

INSTALLED_APPS = (
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.sites',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'app',
    'bootstrap3',
    'pymodbus',
    # Uncomment the next line to enable the admin:
    # 'django.contrib.admin',
    # Uncomment the next line to enable admin documentation:
    # 'django.contrib.admindocs',
)

# A sample logging configuration. The only tangible logging
# performed by this configuration is to send an email to
# the site admins on every HTTP 500 error when DEBUG=False.
# See http://docs.djangoproject.com/en/dev/topics/logging for
# more details on how to customize your logging configuration.
LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'filters': {
        'require_debug_false': {
            '()': 'django.utils.log.RequireDebugFalse'
        }
    },
    'handlers': {
        'mail_admins': {
            'level': 'ERROR',
            'filters': ['require_debug_false'],
            'class': 'django.utils.log.AdminEmailHandler'
        }
    },
    'loggers': {
        'django.request': {
            'handlers': ['mail_admins'],
            'level': 'ERROR',
            'propagate': True,
        },
    }
}

# Specify the default test runner.
TEST_RUNNER = 'django.test.runner.DiscoverRunner'

Answer 1

在您的 ajax 调用中添加一行 dataType: 'json'。

    $.ajax({
        url: '/ping_device',
        type: 'POST',
        data: { 'port': '20' },
        contentType: "application/x-www-form-urlencoded",
        dataType: 'json',   // type of data expected back from the server
        success: function (result) {
            debugger;
            alert("message: " + result.message);
        },
        error: function(data){
            alert('error..');
        }
    })