python rabbitmq 消费端根据能力轮询接受
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python rabbitmq 消费端根据能力轮询接受
时间:2017-10-12 11:31:58 不惧寒冬 分类:技术博客

给接收端添加:

channel.basic_qos(prefetch_count=1)  ##一次处理一个,处理完再接受新消息



发送端:

import pika

connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
channel = connection.channel()


channel.queue_declare(queue='hello',durable=True)  ##队列持久化,队列重启后也存在,不保证数据是否存在
# channel.queue_delete(queue="task_queue")
for i in range(100):
    channel.basic_publish(exchange='',
                          routing_key='hello',
                          body=str(i),
                          properties=pika.BasicProperties(delivery_mode=2) ##数据持久化
                          )
# print("Sent 'hello world!'")
connection.close()


接收端:

#!/usr/bin/env python
import pika
import time
connection = pika.BlockingConnection(pika.ConnectionParameters(host='localhost'))
channel = connection.channel()

channel.queue_declare(queue='hello',durable=True)
# channel.queue_bind(queue='hello',exchange='',routing_key='hello')
def callback(ch, method, properties, body):
    # print("aaa")
    print(" [x] Received %r" % body)
    time.sleep(1)
    ch.basic_ack(delivery_tag=method.delivery_tag)  # 给rabbitmq返回已拿到数据信号。

channel.basic_qos(prefetch_count=1)  ##一次处理一个,处理完再接受新消息
channel.basic_consume(callback,
                      queue='hello',
                      no_ack=False)

print(' [*] Waiting for messages. To exit press CTRL+C')
channel.start_consuming()


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