rabbitMQ實戰(一)---------使用pika庫實現hello world

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rabbitMQ實戰(一)---------使用pika庫實現hello world2016-05-18 23:29 本站整理 瀏覽(267)  pika是RabbitMQ團隊編寫的官方Python AMQP庫。需要先安裝pika:pip3 install pika有較詳細的注釋，就不再詳細說明了生產者代碼：hello_world_producer.py:

import pika,sys#connect to the rabbitmq,use the default vhostcredentials = pika.PlainCredentials("guest","guest")conn_params = pika.ConnectionParameters("localhost",                                        credentials=credentials)conn_broker = pika.BlockingConnection(conn_params)#get a channel used to communicate with the rabbitmqchannel = conn_broker.channel()#declare a exchangechannel.exchange_declare(exchange=‘hello-exchange‘,                         type=‘direct‘,                         passive=False, #if the exchange already existes,report a error.It means we want to declare an exchange.                         durable=True, #durable the message                         auto_delete=False) #if the last consumer is over,do not delete the exchange auto#create a messagemsg = sys.argv[1]msg_props = pika.BasicProperties()msg_props.content_type = "text/plain"#publish the messagechannel.basic_publish(body=msg,                      exchange=‘hello-exchange‘,                      properties=msg_props,                      routing_key=‘hola‘)

消費者代碼

hello_world_consumer.py:

import pika#connect to the rabbitmq,use the default vhostcredentials = pika.PlainCredentials("guest","guest")conn_params = pika.ConnectionParameters("localhost",                                        credentials=credentials)conn_broker = pika.BlockingConnection(conn_params)#get a channel used to communicate with the rabbitmqchannel = conn_broker.channel()#declare a exchangechannel.exchange_declare(exchange=‘hello-exchange‘,                         type=‘direct‘,                         passive=False, #if the exchange already existes,report a error.It means we want to declare an exchange.                         durable=True, #durable the message                         auto_delete=False) #if the last consumer is over,do not delete the exchange auto#declare a queuechannel.queue_declare(queue="hello-queue")#bind queue to an exchangechannel.queue_bind(queue=‘hello-queue‘,                   exchange=‘hello-exchange‘,                   routing_key=‘hola‘)#define the consumer method to consumer message from a queuedef msg_consumer(channel,method,header,body):    channel.basic_ack(delivery_tag=method.delivery_tag)    if body.decode("ascii") == "quit":        channel.basic_cancel(consumer_tag=‘hello-consumer‘)        channel.stop_consuming()    else:        print(body)    return#subscribe messagechannel.basic_consume(msg_consumer,                      queue=‘hello-queue‘,                      consumer_tag=‘hello-consumer‘)#begin loop until a quit message is sentchannel.start_consuming()

運行代碼：

需要先運行consumer，因為我們是在消費者中建立隊列的，如果先生產訊息，由於沒有可以路由到的隊列，訊息會被丟棄。

$ python hello_world_consumer.pyb‘good‘b‘hello world‘

$ python hello_world_producer.py "good"$ python hello_world_producer.py "hello world"$ python hello_world_producer.py "quit"

 

rabbitMQ實戰(一)---------使用pika庫實現hello world