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本篇文章為大家展示了spring boot如何實現(xiàn)對RabbitMQ整合,內(nèi)容簡明扼要并且容易理解,絕對能使你眼前一亮,通過這篇文章的詳細(xì)介紹希望你能有所收獲。
1.Fanout Exchange介紹
Fanout Exchange 消息廣播的模式,不管路由鍵或者是路由模式,會把消息發(fā)給綁定給它的全部隊列,如果配置了routing_key會被忽略。
如上圖所示,即當(dāng)使用fanout交換器時,他會將消息廣播到與該交換器綁定的所有隊列上,這有利于你對單條消息做不同的反應(yīng)。
例如存在以下場景:一個web服務(wù)要在用戶完善信息時,獲得積分獎勵,這樣你就可以創(chuàng)建兩個對列,一個用來處理用戶信息的請求,另一個對列獲取這條消息是來完成積分獎勵的任務(wù)。
2.代碼示例
1).Queue配置類
FanoutRabbitConfig.java類:
package com.example.rabbitmqfanout; import org.springframework.amqp.core.Binding; import org.springframework.amqp.core.BindingBuilder; import org.springframework.amqp.core.FanoutExchange; import org.springframework.amqp.core.Queue; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; @Configuration public class FanoutRabbitConfig { //創(chuàng)建隊列 @Bean public Queue AMessage() { return new Queue("fanout.A"); } //創(chuàng)建隊列 @Bean public Queue BMessage() { return new Queue("fanout.B"); } //創(chuàng)建隊列 @Bean public Queue CMessage() { return new Queue("fanout.C"); } //創(chuàng)建Fanout交換器 @Bean FanoutExchange fanoutExchange() { return new FanoutExchange("fanoutExchange"); } //將對列綁定到Fanout交換器 @Bean Binding bindingExchangeA(Queue AMessage,FanoutExchange fanoutExchange) { return BindingBuilder.bind(AMessage).to(fanoutExchange); } //將對列綁定到Fanout交換器 @Bean Binding bindingExchangeB(Queue BMessage, FanoutExchange fanoutExchange) { return BindingBuilder.bind(BMessage).to(fanoutExchange); } //將對列綁定到Fanout交換器 @Bean Binding bindingExchangeC(Queue CMessage, FanoutExchange fanoutExchange) { return BindingBuilder.bind(CMessage).to(fanoutExchange); } }
2).消息生產(chǎn)者
FanoutSender.java類:
package com.example.rabbitmqfanout.rabbitmq; import org.springframework.amqp.core.AmqpTemplate; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; @Component public class FanoutSender { @Autowired private AmqpTemplate rabbitTemplate; public void send() { String context = "hi, fanout msg "; System.out.println("Sender : " + context); this.rabbitTemplate.convertAndSend("fanoutExchange","", context); } }
3).消息消費者
FanoutReceiverA.java類:
package com.example.rabbitmqfanout.rabbitmq; import org.springframework.amqp.rabbit.annotation.RabbitHandler; import org.springframework.amqp.rabbit.annotation.RabbitListener; import org.springframework.stereotype.Component; @Component @RabbitListener(queues = "fanout.A") public class FanoutReceiverA { @RabbitHandler public void process(String message) { System.out.println("fanout Receiver A : " + message); } }
FanoutReceiverB.java類:
package com.example.rabbitmqfanout.rabbitmq; import org.springframework.amqp.rabbit.annotation.RabbitHandler; import org.springframework.amqp.rabbit.annotation.RabbitListener; import org.springframework.stereotype.Component; @Component @RabbitListener(queues = "fanout.B") public class FanoutReceiverB { @RabbitHandler public void process(String message) { System.out.println("fanout Receiver B: " + message); } }
FanoutReceiverC.java類:
package com.example.rabbitmqfanout.rabbitmq; import org.springframework.amqp.rabbit.annotation.RabbitHandler; import org.springframework.amqp.rabbit.annotation.RabbitListener; import org.springframework.stereotype.Component; @Component @RabbitListener(queues = "fanout.C") public class FanoutReceiverC { @RabbitHandler public void process(String message) { System.out.println("fanout Receiver C: " + message); } }
4).測試
FanoutTest.java類:
package com.example.rabbitmqfanout.rabbitmq; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.test.context.junit4.SpringRunner; @RunWith(SpringRunner.class) @SpringBootTest public class FanoutTest { @Autowired private FanoutSender sender; @Test public void fanoutSender() throws Exception { sender.send(); } }
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