利用flask+celery+flask_mail扩展异步发送邮件时，celery会出现上下文问题，有人能解决吗？网上找了很多，都感觉很模糊

Question

import random

from flask import Flask, request, jsonify, render_template, current_app
from celery import Celery
from flask_mail import Message, Mail

import settings

app = Flask(__name__)
app.config.from_object(settings.BaseConfig)
mail = Mail(app)

celery = Celery(app.name, broker=app.config['CELERY_BROKER_URL'])
celery.conf.update(app.config)


@celery.task
def send_async_email(subject, to, expire_minute):
    app = current_app._get_current_object()
    msg = Message(subject=subject,
                  sender=app.config['MAIL_DEFAULT_SENDER'],
                  recipients=[to])
    msg.body = 'This is a test email sent from a background Celery task.'
    vcode = ''.join([str(i) for i in random.sample(range(0, 10), 4)])
    context = {
        'subject': subject,
        'expire_minute': expire_minute,
        'vcode': vcode,
        # 'debug': get_config_partial('DEBUG'),
        # 'debug': True,
    }
    msg.html = render_template(app.config['EMAIL_TEMPLATE'] + '.html', **context)
    # with app.app_context():
    mail.send(msg)


@app.route('/send_email', methods=['POST'])
def send_email():
    try:
        subject = request.form.get("subject")
        to = request.form.get("to")
        expire_minute = request.form.get("expire_minute")
    except:
        return jsonify({'msg': '参数有误'})

    # send_async_email.delay(app, msg)
    send_async_email.apply_async(args=[subject, to, expire_minute])
    message = '邮件发送成功'
    return jsonify(message=message)


if __name__ == '__main__':
    app.run()

这是我的settings文件

class BaseConfig(object):
    CELERY_BROKER_URL = 'amqp://guest:guest@localhost:5672//'
    BACKEND = None
    RABBITMQ_QUEUE = 'hello'

    MAIL_SERVER = 'smtp.163.com '
    MAIL_PORT = 25
    MAIL_USE_TLS = True
    MAIL_USERNAME = 'mini@ 163.com'
    MAIL_PASSWORD = '1314AC'
    MAIL_DEFAULT_SENDER = 'mini @ 163.com'
    DEFAULT_FROM_EMAIL = 'mini @ 163.com'
    EMAIL_TEMPLATE = 'email'

Answer 1

https://blog.csdn.net/weixin_40612082/article/details/81149592