RabbitMQ消息队列-交换机Direct模式

在Direct类型的路由控制下，交换机将根据消息中含有的路由键信息，发送给指定监听该路由键的消息队列，下面我们以ThinkPHP的代码来详细说明这一过程。

创建一个控制器类MQExchangeDirect，其对应的类文件MQExchangeDirect.php中的代码如下

<?php
/**
 * Created by PhpStorm.
 * User: zhaoqinsong
 * Date: 2018/12/11
 * Time: 9:44 AM
 */
namespace app\msq\controller;
use think\App;
use think\Controller;
use PhpAmqpLib\Connection\AMQPStreamConnection;
use PhpAmqpLib\Message\AMQPMessage;
class MQExchangeDirect extends Controller
{
    var $msq_connect;
    var $msq_channel;
    public function __construct(App $app)
    {
        parent::__construct($app);
        $this->msq_connect = new AMQPStreamConnection("localhost", 5672, "phpmsq", "123456");
        $this->msq_channel = $this->msq_connect->channel();
        $this->msq_channel->exchange_declare("exchange1", "direct");
    }
    public function index()
    {
        echo "rabbitmq of test";
    }
    public function mq_send()
    {
        $msg = new AMQPMessage("Hello World to test1");
        $this->msq_channel->basic_publish($msg, "exchange1", "test1");
        $msg = new AMQPMessage("Hello World to test2");
        $this->msq_channel->basic_publish($msg, "exchange1", "test2");
    }
    public function mq_recv1()
    {
        $this->msq_channel->queue_declare("simple1", false, true, false, false);    //  生成一个持久化消息队列
        $this->msq_channel->queue_bind("simple1", "exchange1", "test1");
        $this->msq_channel->basic_qos(null,1, null);
        //  处理消息队列simple中的消息
        $callback = function($msg) {
            $body = $msg->body;
            echo "recv:$body\n";
        };
        $this->msq_channel->basic_consume("simple1", "", false, true, false, false, $callback);
        while ($this->msq_channel->callbacks) {
            $this->msq_channel->wait();
        }
    }
    public function mq_recv2()
    {
        $this->msq_channel->queue_declare("simple2", false, true, false, false);    //  生成一个持久化消息队列
        $this->msq_channel->queue_bind("simple2", "exchange1", "test2");
        $this->msq_channel->basic_qos(null,1, null);
        //  处理消息队列simple中的消息
        $callback = function($msg) {
            $body = $msg->body;
            echo "recv:$body\n";
        };
        $this->msq_channel->basic_consume("simple2", "", false, true, false, false, $callback);
        while ($this->msq_channel->callbacks) {
            $this->msq_channel->wait();
        }
    }
    public function __destruct()
    {
        $this->msq_channel->close();
        $this->msq_connect->close();
    }
}

指定路由，设定/direct/send指向此类的mq_send方法，/direct/recv1指向mq_recv1方法，/direct/recv2指向mq_recv2方法。

在命令行下，先创建两个服务器连接，用于执行接收消息的程序

# php public/index.php /direct/recv1(接收路由键test1)

# php public/index.php /direct/recv2(接收路由键test2)

# php public/index.php /direct/send

# php public/index.php /direct/recv1
recv:Hello World to test1

# php public/index.php /direct/recv2
recv:Hello World to test2