路由模式

队列与交换机的绑定，不能是任意绑定了，而是要指定一个 RoutingKey（路由key）

消息的发送方在向 Exchange 发送消息时，也必须指定消息的 RoutingKey

Exchange 不再把消息交给每一个绑定的队列，而是根据消息的 Routing Key 进行判断，只有队列的 Routingkey 与消息的 Routing key 完全一致，才会接收到消息

生产者代码

public class RouteProducer {public static void main(String[] args) throws Exception {//1.创建连接ConnectionFactory cf = new ConnectionFactory();cf.setHost("192.168.64.140");cf.setPort(5672);cf.setUsername("guest");cf.setPassword("guest");Connection nc = cf.newConnection();Channel cc = nc.createChannel();//2.定义交换机cc.exchangeDeclare("direct_logs", BuiltinExchangeType.DIRECT);//3.发送数据，携带路由键while(true) {Scanner scanner = new Scanner(System.in);System.out.print("消息：");String s = scanner.nextLine();System.out.print("路由键：");String key =scanner.nextLine();	    	cc.basicPublish("direct_logs", key, null, s.getBytes())	    	System.out.println("-----------------------------------------------------");}	    }
}

消费者代码

public class RouteConsumer {public static void main(String[] args) throws Exception {//1.创建连接ConnectionFactory cf = new ConnectionFactory();cf.setHost("192.168.64.140");cf.setPort(5672);cf.setUsername("guest");cf.setPassword("guest");Connection nc = cf.newConnection();Channel cc = nc.createChannel();//2.定义交换机cc.exchangeDeclare("direct_logs", BuiltinExchangeType.DIRECT);/3.定义队列String queue = cc.queueDeclare().getQueue();//4.绑定队列和交换机(重复绑定多次)System.out.print("输入绑定键，用空格隔开：");String s = new Scanner(System.in).nextLine();//aaa bbb  cccString[] a = s.split("\\s+");for (String key : a) {ch.queueBind(queue, "direct_logs", key);}//5.处理数据DeliverCallback deliverCallback = new DeliverCallback() {@Overridepublic void handle(String consumerTag, Delivery message) throws IOException {//从message中取出消息和路由键String s=new String(message.getBody());String key = message.getEnvelope().getRoutingKey();System.out.println(s+"--"+key);System.out.println("=======================================");}};CancelCallback cancelCallback = new CancelCallback() {@Overridepublic void handle(String consumerTag) throws IOException {}};cc.basicConsume(queue, true,deliverCallback,cancelCallback);}
}

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