Celery运行错误：拒绝反序列化pickle类型的不可信内容

CRITICAL/MainProcess] Can‘t decode message body: ContentDisallowed(‘Refusing to deserialize untrusted content of type pickle (application/x-python-serialize)‘,) [type:‘application/x-python-serialize‘ encoding:‘binary‘ headers:{}]

body: b‘\x80\x02}q\x00(X\x04\x00\x00\x00taskq\x01X-\x00\x00\x00celery_tasks.tasks.send_register_active_emailq\x02X\x02\x00\x00\x00idq\x03X$\x00\x00\x00e725345b-b943-404a-83d4-85ad04008439q\x04X\x04\x00\x00\x00argsq\x05X\x10\x00\x00\x00lifeoooo@163.comq\x06X\x07\x00\x00\x00xxx2212q\x07X\xad\x00\x00\x00eyJhbGciOiJIUzUxMiIsImlhdCI6MTU1Nzk3ODc3MSwiZXhwIjoxNTU3OTgyMzcxfQ.eyJjb25maXJtIjoyNn0._8gAN9YjorcgAPOso-Xd4W-LyJxCtXYyjJRpD8XdguA5dXgrfBILBj37xcN3I0IAmujhY9JLKq_H1T6mNHCz3wq\x08\x87q\tX\x06\x00\x00\x00kwargsq\n}q\x0bX\x07\x00\x00\x00retriesq\x0cK\x00X\x03\x00\x00\x00etaq\rNX\x07\x00\x00\x00expiresq\x0eNX\x03\x00\x00\x00utcq\x0f\x88X\t\x00\x00\x00callbacksq\x10NX\x08\x00\x00\x00errbacksq\x11NX\t\x00\x00\x00timelimitq\x12NN\x86q\x13X\x07\x00\x00\x00tasksetq\x14NX\x05\x00\x00\x00chordq\x15Nu.‘ (505b)
Traceback (most recent call last):
  File "/root/.virtualenvs/dailyfresh/lib/python3.6/site-packages/celery/worker/consumer/consumer.py", line 546, in on_task_received
    type_ = message.headers[‘task‘]                # protocol v2
KeyError: ‘task‘

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/root/.virtualenvs/dailyfresh/lib/python3.6/site-packages/celery/worker/consumer/consumer.py", line 551, in on_task_received
    payload = message.decode()
  File "/root/.virtualenvs/dailyfresh/lib/python3.6/site-packages/kombu/message.py", line 192, in decode
    self._decoded_cache = self._decode()
  File "/root/.virtualenvs/dailyfresh/lib/python3.6/site-packages/kombu/message.py", line 197, in _decode
    self.content_encoding, accept=self.accept)
  File "/root/.virtualenvs/dailyfresh/lib/python3.6/site-packages/kombu/serialization.py", line 253, in loads
    raise self._for_untrusted_content(content_type, ‘untrusted‘)
kombu.exceptions.ContentDisallowed: Refusing to deserialize untrusted content of type pickle (application/x-python-serialize)

from kombu import serialization
serialization.registry._decoders.pop("application/x-python-serialize")

app.conf.update(
    CELERY_ACCEPT_CONTENT = [‘json‘],
    CELERY_TASK_SERIALIZER = ‘json‘,
    CELERY_RESULT_SERIALIZER = ‘json‘,
)

# 使用celery
from django.conf import settings
from django.core.mail import send_mail
from celery import Celery
import time

# 在任务处理者一端加这几句代码
# centos上面
# import os
# import django
# os.environ.setdefault(‘DJANGO_SETTINGS_MODULE‘, ‘dailyfresh.settings‘)
# django.setup()


# 创建一个Celery类的实例对象
app = Celery(include=[‘celery_tasks.tasks‘],broker=‘redis://192.168.91.128:6379/8‘)

from kombu import serialization
serialization.registry._decoders.pop("application/x-python-serialize")

app.conf.update(
    CELERY_ACCEPT_CONTENT = [‘json‘],
    CELERY_TASK_SERIALIZER = ‘json‘,
    CELERY_RESULT_SERIALIZER = ‘json‘,
)
#定义任务函数
@app.task
def send_register_active_email(to_email,username,token):
    ‘‘‘发送激活邮件‘‘‘
    #组织邮件信息
    subject = "天天生鲜欢迎信息"
    message = ""  # 邮件正文
    sender = settings.EMAIL_FROM
    receiver = [to_email]  # 收件人邮箱列表
    html_message = ‘<h1>%s, 欢迎您成为天天生鲜注册会员</h1>请点击下面链接激活您的账户<br/><a href="http://127.0.0.1:8000/user/active/%s">http://127.0.0.1:8000/user/active/%s</a>‘ % (
    username, token, token)
    send_mail(subject, message, sender, receiver, html_message=html_message)
    time.sleep(7)