Python队列RabbitMQ 使用方法实例记录

2019-11-25 12:06:42

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本文实例讲述了Python队列RabbitMQ 使用方法。分享给大家供大家参考，具体如下：

目前的exchange的路由策略是：每个需要队列的服务独享一个队列（queue），消费者（consumer）采用ACK自动应答模式处理队列消息。

如果需要新增一个队列服务，需要做如下开发步骤：

1.创建队列，发送消息

<?php$routingkey = 'key';//设置你的连接$conn_args = array('host' => 'localhost', 'port' => '5672', 'login' => 'guest', 'password' => 'guest');$conn = new AMQPConnection($conn_args);if ($conn->connect()) {  echo "Established a connection to the broker /n";} else {  echo "Cannot connect to the broker /n ";}//你的消息$message = json_encode(array('Hello World3!', 'php3', 'c++3:'));//创建channel$channel = new AMQPChannel($conn);//创建exchange$ex = new AMQPExchange($channel);$ex->setName('exchange2'); //创建名字$ex->setType(AMQP_EX_TYPE_DIRECT);$ex->setFlags(AMQP_DURABLE);echo "exchange2 status:" . $ex->declareExchange();echo "/n";for ($i = 0; $i < 100; $i++) {  if ($routingkey == 'key2') {    $routingkey = 'key';  } else {    $routingkey = 'key2';  }  $ex->publish($message, $routingkey);}

这样就产生了50条消息，但是没有消费者，所以没有被消费

2.创建消费者，消费信息

<?phpset_time_limit(0);$e_name = 'exchange2'; //交换机名$q_name = 'queue2'; //队列名$k_route = 'key2'; //路由key //连接RabbitMQ$conn_args = array('host' => '127.0.0.1', 'port' => '5672', 'login' => 'guest', 'password' => 'guest', 'vhost' => '/');$conn = new AMQPConnection($conn_args);$conn->connect();$channel = new AMQPChannel($conn);  //创建交换机$ex = new AMQPExchange($channel);$ex->setName($e_name);$ex->setType(AMQP_EX_TYPE_DIRECT); //direct类型$ex->setFlags(AMQP_DURABLE); //持久化echo "Exchange Status:" . $ex->declareExchange() . "/n";//创建队列$q = new AMQPQueue($channel);$q->setName($q_name);$q->setFlags(AMQP_DURABLE); //持久化 //绑定交换机与队列，并指定路由键echo 'Queue Bind: ' . $q->bind($e_name, $k_route) . "/n"; //阻塞模式接收消息echo "Message:/n";$q->consume('processMessage', AMQP_AUTOACK); //自动ACK应答 $conn->disconnect();/** * 消费回调函数 * 处理消息 */function processMessage($envelope, $queue) {  var_dump($envelope->getRoutingKey());  $msg = $envelope->getBody();  echo $msg . "/n"; //处理消息}

运行之后