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本篇文章給大家分享的是有關Springboot怎么整合RabbitMQ,小編覺得挺實用的,因此分享給大家學習,希望大家閱讀完這篇文章后可以有所收獲,話不多說,跟著小編一起來看看吧。
15min
IDEA
maven 3.0
在開始構建項目之前,機器需要安裝rabbitmq,你可以去官網下載,http://www.rabbitmq.com/download.html ,如果你是用的Mac(程序員都應該用mac吧),你可以這樣下載:
brew install rabbitmq
安裝完成后開啟服務器:
rabbitmq-server
開啟服務器成功,你可以看到以下信息:
RabbitMQ 3.1.3. Copyright (C) 2007-2013 VMware, Inc. ## ## Licensed under the MPL. See http://www.rabbitmq.com/ ## ## ########## Logs: /usr/local/var/log/rabbitmq/rabbit@localhost.log ###### ## /usr/local/var/log/rabbitmq/rabbit@localhost-sasl.log ########## Starting broker... completed with 6 plugins.
構架一個SpringBoot工程,其pom文件依賴加上spring-boot-starter-amqp的起步依賴:
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-amqp</artifactId> </dependency>
在任何的消息隊列程序中,你需要創建一個消息接收者,用于響應發送的消息。
@Component public class Receiver { private CountDownLatch latch = new CountDownLatch(1); public void receiveMessage(String message) { System.out.println("Received <" + message + ">"); latch.countDown(); } public CountDownLatch getLatch() { return latch; } }
消息接收者是一個簡單的POJO類,它定義了一個方法去接收消息,當你注冊它去接收消息,你可以給它取任何的名字。其中,它有CountDownLatch這樣的一個類,它是用于告訴發送者消息已經收到了,你不需要在應用程序中具體實現它,只需要latch.countDown()就行了。
在spring程序中,RabbitTemplate提供了發送消息和接收消息的所有方法。你只需簡單的配置下就行了:
需要一個消息監聽容器
聲明一個quene,一個exchange,并且綁定它們
一個組件去發送消息
代碼清單如下:
package com.forezp; import com.forezp.message.Receiver; import org.springframework.amqp.core.Binding; import org.springframework.amqp.core.BindingBuilder; import org.springframework.amqp.core.Queue; import org.springframework.amqp.core.TopicExchange; import org.springframework.amqp.rabbit.connection.ConnectionFactory; import org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer; import org.springframework.amqp.rabbit.listener.adapter.MessageListenerAdapter; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.context.annotation.Bean; @SpringBootApplication public class SpringbootRabbitmqApplication { final static String queueName = "spring-boot"; @Bean Queue queue() { return new Queue(queueName, false); } @Bean TopicExchange exchange() { return new TopicExchange("spring-boot-exchange"); } @Bean Binding binding(Queue queue, TopicExchange exchange) { return BindingBuilder.bind(queue).to(exchange).with(queueName); } @Bean SimpleMessageListenerContainer container(ConnectionFactory connectionFactory, MessageListenerAdapter listenerAdapter) { SimpleMessageListenerContainer container = new SimpleMessageListenerContainer(); container.setConnectionFactory(connectionFactory); container.setQueueNames(queueName); container.setMessageListener(listenerAdapter); return container; } @Bean MessageListenerAdapter listenerAdapter(Receiver receiver) { return new MessageListenerAdapter(receiver, "receiveMessage"); } public static void main(String[] args) { SpringApplication.run(SpringbootRabbitmqApplication.class, args); } }
創建一個測試方法:
@Component public class Runner implements CommandLineRunner { private final RabbitTemplate rabbitTemplate; private final Receiver receiver; private final ConfigurableApplicationContext context; public Runner(Receiver receiver, RabbitTemplate rabbitTemplate, ConfigurableApplicationContext context) { this.receiver = receiver; this.rabbitTemplate = rabbitTemplate; this.context = context; } @Override public void run(String... args) throws Exception { System.out.println("Sending message..."); rabbitTemplate.convertAndSend(Application.queueName, "Hello from RabbitMQ!"); receiver.getLatch().await(10000, TimeUnit.MILLISECONDS); context.close(); } }
啟動程序,你會發現控制臺打印:
Sending message... Received <Hello from RabbitMQ!>
以上就是Springboot怎么整合RabbitMQ,小編相信有部分知識點可能是我們日常工作會見到或用到的。希望你能通過這篇文章學到更多知識。更多詳情敬請關注億速云行業資訊頻道。
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