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centOS7安装RabbitMQ及python实

1.rabbitmq是有erlang开发的,所以首先要先安装erlang

rpm -ivh erlang-18.1-1.el7.centos.x86_64.rpm

rpm -ivh rabbitmq-server-3.6.6-1.el7.noarch .rpm

安装rabbimq时提示依赖包socat未安装

yum -y install socat

安装完成后执行service rabbitmq-server start开启服务

2.使用python测试一下

python使用rabbitmq需要安装pika类库,我们可以使用pip安装pika,pip是python的软件管理包

安装pip

wget https://bootstrap.pypa.io/get-pip.py

python get-pip.py

安装pika

pip install pika

源代码参考原文http://blog.csdn.net/fgf00/article/details/52872730

创建send.py

#!/usr/bin/python

import pika # 建立一个实例

connection = pika.BlockingConnection( pika.ConnectionParameters(‘localhost‘,5672) # 默认端口5672,可不写 )

# 声明一个管道,在管道里发消息

channel = connection.channel()

# 在管道里声明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‘, # queue名字 body=‘Hello World!‘)

# 消息内容

print(" [x] Sent ‘Hello World!‘")

connection.close() # 队列关闭

 

创建receive.py

import pika

import time

# 建立实例

connection = pika.BlockingConnection(pika.ConnectionParameters( ‘localhost‘))

# 声明管道

channel = connection.channel()

# 为什么又声明了一个‘hello’队列? # 如果确定已经声明了,可以不声明。但是你不知道那个机器先运行,所以要声明两次。

channel.queue_declare(queue=‘hello‘)

def callback(ch, method, properties, body): # 四个参数为标准格式

  print(ch, method, properties) # 打印看一下是什么

  # 管道内存对象 内容相关信息 后面讲

  print(" [x] Received %r" % body)

  time.sleep(15)

  ch.basic_ack(delivery_tag = method.delivery_tag) # 告诉生成者,消息处理完成

channel.basic_consume( # 消费消息

  callback, # 如果收到消息,就调用callback函数来处理消息

  queue=‘hello‘, # 你要从那个队列里收消息

  # no_ack=True # 写的话,如果接收消息,机器宕机消息就丢了 # 一般不写。宕机则生产者检测到发给其他消费者

)

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

channel.start_consuming() # 开始消费消息

 

执行python send.py,输出

[x] Sent ‘Hello World!‘

执行rabbitmqctl list_queues,输出

Listing queues ...
hello 1

执行python receive.py,输出

[*] Waiting for messages. To exit press CTRL+C
(<pika.adapters.blocking_connection.BlockingChannel object at 0x1cbc510>, <Basic.Deliver([‘consumer_tag=ctag1.bde4b3712fa64fccb5677c4fb420c35a‘, ‘delivery_tag=1‘, ‘exchange=‘, ‘redelivered=False‘, ‘routing_key=hello‘])>, <BasicProperties>)
[x] Received ‘Hello World!‘

 

centOS7安装RabbitMQ及python实