首先可以去官方看看第三章節講的一些內容：https://www.rabbitmq.com/tutorials/tutorial-three-java.html

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RabbitMQ中消息傳遞模型的核心思想是生產者永遠不會將任何消息直接發送到隊列。

實際上，生產者通常甚至不知道消息是否會被傳遞到任何隊列。

相反，生產者只能向Exchanges(交換機)發送消息。交換是一件非常簡單的事情。

一方面，它接收來自生產者的消息，另一方面將它們推送到隊列。

Exchanges(交換機)必須確切知道如何處理它收到的消息。

Exchanges(交換機)有幾種交換類型可供選擇：direct,?topic,?headers?and?fanout

本文采用的fanout（廣播模式）

1.生產者?

package com.baidu.RabbitMQ.mq02;import com.rabbitmq.client.BuiltinExchangeType; import com.rabbitmq.client.Channel; import com.rabbitmq.client.Connection; import com.rabbitmq.client.ConnectionFactory;public class OneProducer {private static final String Exchange_Name="rabbit:mq02:exchange:e01";public static void main(String[] args) {try {ConnectionFactory factory = new ConnectionFactory();factory.setHost("127.0.0.1");Connection connection = factory.newConnection();Channel channel = connection.createChannel();//TODO：fanout-exchange無意識分發消息模型channel.exchangeDeclare(Exchange_Name, BuiltinExchangeType.FANOUT);String message = "fanoutExchange-publish的消息";channel.basicPublish(Exchange_Name, "", null, message.getBytes("UTF-8"));System.out.println("生產者發送消息成功---> ");channel.close();connection.close();} catch (Exception e) {e.printStackTrace();}} }

?2.消費者one

package com.baidu.RabbitMQ.mq02;import java.io.IOException;import com.rabbitmq.client.AMQP; import com.rabbitmq.client.BuiltinExchangeType; import com.rabbitmq.client.Channel; import com.rabbitmq.client.Connection; import com.rabbitmq.client.ConnectionFactory; import com.rabbitmq.client.Consumer; import com.rabbitmq.client.DefaultConsumer; import com.rabbitmq.client.Envelope;public class MultiConsumerOne {private static final String Exchange_Name="rabbit:mq02:exchange:e01";private static final String Queue_Name_01="rabbit:mq02:queue:q01";public static void main(String[] args) {try {ConnectionFactory factory = new ConnectionFactory();factory.setHost("127.0.0.1");Connection connection = factory.newConnection();Channel channel = connection.createChannel();//TODO：fanout-exchange無意識分發消息模型-綁定channel.exchangeDeclare(Exchange_Name, BuiltinExchangeType.FANOUT);channel.queueDeclare(Queue_Name_01, true, false, false, null);channel.queueBind(Queue_Name_01, Exchange_Name, "");Consumer consumer = new DefaultConsumer(channel) {@Overridepublic void handleDelivery(String consumerTag, Envelope envelope,AMQP.BasicProperties properties, byte[] body) throws IOException {String message = new String(body, "UTF-8");System.out.println("消費者1接收到消息成功---> "+message);}};channel.basicConsume(Queue_Name_01, true, consumer);} catch (Exception e) {e.printStackTrace();}} }

?3.消費者two

package com.baidu.RabbitMQ.mq02;import java.io.IOException;import com.rabbitmq.client.AMQP; import com.rabbitmq.client.BuiltinExchangeType; import com.rabbitmq.client.Channel; import com.rabbitmq.client.Connection; import com.rabbitmq.client.ConnectionFactory; import com.rabbitmq.client.Consumer; import com.rabbitmq.client.DefaultConsumer; import com.rabbitmq.client.Envelope;public class MultiConsumerTwo {private static final String Exchange_Name="rabbit:mq02:exchange:e01";private static final String Queue_Name_02="rabbit:mq02:queue:q02";public static void main(String[] args) {try {ConnectionFactory factory = new ConnectionFactory();factory.setHost("127.0.0.1");Connection connection = factory.newConnection();Channel channel = connection.createChannel();//TODO：fanout-exchange無意識分發消息模型channel.exchangeDeclare(Exchange_Name, BuiltinExchangeType.FANOUT);channel.queueDeclare(Queue_Name_02, true, false, false, null);channel.queueBind(Queue_Name_02, Exchange_Name, "");Consumer consumer = new DefaultConsumer(channel) {@Overridepublic void handleDelivery(String consumerTag, Envelope envelope,AMQP.BasicProperties properties, byte[] body) throws IOException {String message = new String(body, "UTF-8");System.out.println("消費者2接收到消息成功---> "+message);}};channel.basicConsume(Queue_Name_02, true, consumer);} catch (Exception e) {e.printStackTrace();}} }

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總結

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