标签：div port ctrl sicp dir auth direct int als
import pika connection = pika.BlockingConnection(pika.ConnectionParameters( ‘localhost‘)) channel = connection.channel() #声明queue channel.queue_declare(queue=‘hello‘) # RabbitMQ a message can never be sent directly to the queue, it always needs to go through an exchange. channel.basic_publish(exchange=‘‘, routing_key=‘hello‘, body=‘Hello World!‘) print(" [x] Sent ‘Hello World!‘") connection.close()
__author__ = ‘hardy‘ import pika connection = pika.BlockingConnection(pika.ConnectionParameters( ‘localhost‘)) channel = connection.channel() #You may ask why we declare the queue again ? we have already declared it in our previous code. # We could avoid that if we were sure that the queue already exists. For example if send.py program #was run before. But we‘re not yet sure which program to run first. In such cases it‘s a good # practice to repeat declaring the queue in both programs. channel.queue_declare(queue=‘hello‘) def callback(ch, method, properties, body): print(" [x] Received %r" % body) channel.basic_consume(callback, queue=‘hello‘, no_ack=True) print(‘ [*] Waiting for messages. To exit press CTRL+C‘) channel.start_consuming()
消息队列的发送端流程
1、连接
connection = pika.BlockingConnection(pika.ConnectionParameters(‘localhost‘)) channel = connection.channel()
2、声明queue
channel.queue_declare(queue=‘hello‘)
队列持久化
channel.queue_declare(queue=‘hello‘, durable=True)
3、发送消息
channel.basic_publish(exchange=‘‘,
routing_key=‘hello‘,
body=‘Hello World!‘)
消息持久化（必须队列持久化）
channel.basic_publish(exchange=‘‘,
routing_key="hello",
body=message,
properties=pika.BasicProperties(
delivery_mode = 2, # make message persistent
))
4、关闭
connection.close()
消息队列接收端流程
1、连接
connection = pika.BlockingConnection(pika.ConnectionParameters(
‘localhost‘))
channel = connection.channel()
2、声明queue
channel.queue_declare(queue=‘hello‘)
3、创建回调函数（处理数据）
def callback(ch, method, properties, body):
print(" [x] Received %r" % body)
4、设置
channel.basic_consume(callback,
queue=‘hello‘,
no_ack=True)
5、开始接收数据
channel.start_consuming()
6、确认消息被消费
def callback(ch, method, properties, body):
print(" [x] Received %r" % body)
time.sleep(body.count(b‘.‘))
print(" [x] Done")
ch.basic_ack(delivery_tag = method.delivery_tag)
channel.basic_consume(callback,
queue=‘task_queue‘,
no_ack=True #no_ack=True消息不需要确认，默认no_ack=false，消息需要确认
)
标签：div port ctrl sicp dir auth direct int als
原文地址：https://www.cnblogs.com/hardykay/p/10207953.html
