MornLi 2019-04-08
环境准备
windows下启动redirs server
redis-server.exe redis.windows.conf
celery配置
项目的settings.py文件修改:
# celery 设置 # celery中间人 redis://redis服务所在的ip地址:端口/数据库号 BROKER_URL = 'redis://127.0.0.1:6379/0' # celery结果返回,可用于跟踪结果 CELERY_RESULT_BACKEND = 'redis://127.0.0.1:6379/0' # celery内容等消息的格式设置 CELERY_ACCEPT_CONTENT = ['application/json', ] CELERY_TASK_SERIALIZER = 'json' CELERY_RESULT_SERIALIZER = 'json' # celery时区设置,使用settings中TIME_ZONE同样的时区 CELERY_TIMEZONE = TIME_ZONE
项目文件夹下添加celery.py文件:
# coding:utf-8 from __future__ import absolute_import, unicode_literals from celery import Celery from django.conf import settings import os # 获取当前文件夹名,即为该Django的项目名 project_name = os.path.split(os.path.abspath('.'))[-1] project_settings = '%s.settings' % project_name # 设置环境变量 os.environ.setdefault('DJANGO_SETTINGS_MODULE', project_settings) # 实例化Celery,网上很多教程这里都是没有设置broker造成启动失败 app = Celery('tasks', broker='redis://127.0.0.1:6379/0') # 使用django的settings文件配置celery app.config_from_object('django.conf:settings') # Celery加载所有注册的应用 app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)
项目的init.py文件修改:
# 引入celery实例对象 from __future__ import absolute_import, unicode_literals from .celery import app as celery_app __all__ = ['celery_app]
测试代码
import time from celery import task @task def add(a,b): print("这是任务开始") print(a+b) time.sleep(10) print("这是任务结束")
url配置如下:
path('add', views.add, name="add")
view代码
from . import tasks def add(request,*args,**kwargs): tasks.add.delay(1,2) result = {'code': 0, 'msg': '这是一个后台任务'} return JsonResponse(result)
再次配置
在manger.py目录执行下面的代码,注意网上的资料大部分执行的命令有问题,造成启动报错,比如这个就是错误的, python manage.py celery -A celery worker --loglevel=info
,请用下面的命令
celery -A djangoApi worker --pool=solo -l info
启动项目, python manager.py runserver 0.0.0.0:8081
运行项目
访问add
查看关键日志
[tasks] . api.base.BaseViewTask.task_run . api.tasks.add [2019-04-07 13:26:02,855: INFO/MainProcess] Connected to redis://127.0.0.1:6379/0 [2019-04-07 13:26:02,869: INFO/MainProcess] mingle: searching for neighbors [2019-04-07 13:26:03,911: INFO/MainProcess] mingle: all alone [2019-04-07 13:26:03,926: WARNING/MainProcess] e:\app\python35\lib\site-packages\celery\fixups\django.py:202: UserWarning: Using settings.DEBUG leads to a memory leak, never use this setting in production environments! warnings.warn('Using settings.DEBUG leads to a memory leak, never ' [2019-04-07 13:26:03,926: INFO/MainProcess] celery@PC-20181208QWQO ready. [2019-04-07 13:29:56,889: INFO/MainProcess] Received task: api.tasks.add[9fd98fd0-50ae-427f-8f33-52d1e4b43068] [2019-04-07 13:29:56,894: WARNING/MainProcess] 这是任务开始 [2019-04-07 13:29:56,895: WARNING/MainProcess] 3 [2019-04-07 13:30:06,896: WARNING/MainProcess] 这是任务结束 [2019-04-07 13:30:06,898: INFO/MainProcess] Task api.tasks.add[9fd98fd0-50ae-427f-8f33-52d1e4b43068] succeeded in 10.0s: None
其他
如何结合前端,如ajax来联合使用?