在DigitalOcean部署Django项目时遇“Error: No application module specified.”错误求助

在DigitalOcean部署Django项目时，项目构建成功，但进入部署阶段不久触发Error: No application module specified.错误，清理缓存并重新部署后问题仍未解决。

项目settings.py配置 #

"""
Django settings for djcrm project.

Generated by 'django-admin startproject' using Django 4.2.2.

For more information on this file, see
https://docs.djangoproject.com/en/4.2/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/4.2/ref/settings/
"""


from pathlib import Path
import os
from dotenv import load_dotenv

# .env dosyasını yükle
load_dotenv()

DEBUG = os.getenv('DEBUG')
# SECRET_KEY'i al
SECRET_KEY = os.getenv('SECRET_KEY')

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent

ALLOWED_HOSTS = ['*']

# Application definition

INSTALLED_APPS = [
    
    
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'whitenoise.runserver_nostatic',
    'django.contrib.staticfiles',

    #third party apps
    'crispy_forms',
    "crispy_tailwind",
    'tailwind',

    #local apps
    'leads',
    'agents',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    "whitenoise.middleware.WhiteNoiseMiddleware",
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'djcrm.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [ BASE_DIR / "templates"],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

WSGI_APPLICATION = 'djcrm.wsgi.application'


# Database
# https://docs.djangoproject.com/en/4.2/ref/settings/#databases

DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.postgresql_psycopg2",
        "NAME": os.getenv("DB_NAME"),
        "USER": os.getenv("DB_USER"),
        "PASSWORD": os.getenv("DB_PASSWORD"),
        "HOST": os.getenv("DB_HOST"),
        "PORT": os.getenv("DB_PORT"),
    }
}

# Password validation
# https://docs.djangoproject.com/en/4.2/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]


# Internationalization
# https://docs.djangoproject.com/en/4.2/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/4.2/howto/static-files/

STATIC_URL = 'static/'
STATICFILES_DIRS = [
    BASE_DIR / "static"
]
STATIC_ROOT = "static_root"
STATICFILES_STORAGE = "whitenoise.storage.CompressedManifestStaticFilesStorage"

AUTH_USER_MODEL = 'leads.User'
EMAIL_BACKEND = "django.core.mail.backends.console.EmailBackend"
LOGIN_REDIRECT_URL = "/leads"
LOGIN_URL = "/login"
LOGOUT_REDIRECT_URL = "/"

CRISPY_ALLOWED_TEMPLATE_PACKS = "tailwind"

CRISPY_TEMPLATE_PACK = "tailwind"

错误截图 #

问题排查与解决方法 #

这个错误核心是WSGI服务器无法找到指定的Django应用模块，结合你的配置，排查方向如下：

• 检查DigitalOcean部署命令：在App Platform的部署配置中，启动命令必须明确指向WSGI模块。如果使用gunicorn，命令应为gunicorn djcrm.wsgi:application，而不是仅写gunicorn或错误的模块路径。
• 确认项目目录结构：确保包含wsgi.py的djcrm目录处于项目根目录下，且部署时的工作目录设置正确，否则gunicorn无法定位到djcrm.wsgi模块。
• 检查环境变量配置：确认部署环境中没有错误设置DJANGO_WSGI_APPLICATION环境变量，避免覆盖settings.py中的正确配置。
• 优化STATIC_ROOT配置：当前STATIC_ROOT = "static_root"使用相对路径，建议改为STATIC_ROOT = BASE_DIR / "static_root"，避免路径解析问题（虽非当前错误直接原因，但可提升部署稳定性）。

内容的提问来源于stack exchange，提问作者kayahankaya