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
<?php set_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
希望本文所述对大家Python程序设计有所帮助。
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