在开发和生产中一切都很好（使用wsgi的apache2.4），问题是在生产中找不到.env文件变量。他们都是空的！

这是.env文件

SQLALCHEMY_DATABASE_URI='sqlite:///fbl_utilities.db'
LOGS_PATH='C:/Apache2.4/flask-app-env/accessRequestBackend/app/logs/run-time-logs.log'

这是配置类为

import os
from dotenv import load_dotenv
load_dotenv()

class Config:
    SECRET_KEY = os.getenv('SECRET_KEY')
    SQLALCHEMY_DATABASE_URI = os.getenv('SQLALCHEMY_DATABASE_URI')
    MAIL_SERVER = os.getenv('SMTP_HOST')
    MAIL_PORT = os.getenv('SMTP_PORT')
    MAIL_USE_TLS = os.getenv('SMTP_TLS')
    MAIL_username = os.getenv('SMTP_USER')
    MAIL_PASSWORD = os.getenv('SMTP_PASS')
    LOGS_PATH = os.getenv('LOGS_PATH')

这是 init .py文件，正在启动我的应用

def create_app(config_class=Config):
    # init
    app = flask(__name__)
    app.config.from_object(Config)
    # dependancies
    db.init_app(app)
    bcrypt.init_app(app)
    login_manager.init_app(app)
    mail.init_app(app)
    # routes
    from app.users.routes import users
    from app.main.routes import main
    from app.departments.routes import departments
    from app.requesttypes.routes import requesttypes
    from app.serverapprovals.routes import serverapprovals
    from app.serverrequestgroups.routes import serverrequestgroups
    from app.serverrights.routes import serverrights
    from app.servers.routes import servers
    from app.vpnapprovals.routes import vpnapprovals
    from app.vpns.routes import vpns
    app.register_blueprint(users)
    app.register_blueprint(main)
    app.register_blueprint(departments)
    app.register_blueprint(requesttypes)
    app.register_blueprint(serverapprovals)
    app.register_blueprint(serverrequestgroups)
    app.register_blueprint(serverrights)
    app.register_blueprint(servers)
    app.register_blueprint(vpnapprovals)
    app.register_blueprint(vpns)
    return app

最后是我的.wsgi文件

import sys
sys.path.insert(0,'C:/Apache2.4/flask-app-env/accessRequestBackend')
from app import create_app
application = create_app()

我认为在apache + wsgi中为代码加载环境变量时，如果找不到 SQLALCHEMY_DATABASE_URI 的值，则缺少某些内容。所有其他变量都一样