rabbitmq 的 hello world (python)

rabbitmq 的hello_world，最见简单的模式。

生产者
代码如下

import pika


class Producer(object):
    def __init__(self, queue_name, username, password, host, port,virtual_host):
        con_param = {
            "host": host,
            "port": port,
            "virtual_host": virtual_host,
            "credentials": pika.credentials.PlainCredentials(
                username, password)
        }
        # 建立连接
        self.con = pika.BlockingConnection(pika.ConnectionParameters(**con_param))
        # 创建通道
        self.channel = self.con.channel()
        # 声明队列
        self.channel.queue_declare(queue=queue_name)

    def send_message(self, routing_key, body):
        # 发送消息
        self.channel.basic_publish(exchange="", routing_key=routing_key, body=body)
        # 关闭通道
        self.channel.close()
        # 关闭连接
        self.con.close()


if __name__ == '__main__':
    p = Producer("test","tom","tom@tom","localhost",5672,"/afei")
    p.send_message("test","hello world!")

消费者

import pika


class Consumer(object):

    def __init__(self, queue_name, username, password, host, port, virtual_host):
        con_param = {
            "host": host,
            "port": port,
            "virtual_host": virtual_host,
            "credentials": pika.credentials.PlainCredentials(
                username, password)
        }

        # 建立连接
        self.con = pika.BlockingConnection(pika.ConnectionParameters(**con_param))
        # 创建通道
        self.channel = self.con.channel()
        # 声明队列
        self.channel.queue_declare(queue=queue_name)

    def consume_message(self, queue_name):
        def callback(ch, method, properties, body):
            print("ch===%r" % ch)
            print("method===%r" % method)
            print("properties===%r" % properties)
            print("[x] Received %r" % body)

        # 消费对象
        self.channel.basic_consume(queue=queue_name, on_message_callback=callback, auto_ack=True)
        # 开始消费
        self.channel.start_consuming()


if __name__ == '__main__':
    try:
        c = Consumer("test", "tom", "tom@tom", "localhost", 5672, "/afei")
        c.consume_message("test")
    except KeyboardInterrupt:
        exit(0)

生产者的
队列名一定要和routing_key 的值一致，要不然消息加不到队列中。