SpringBoot2.0应用（三）：SpringBoot2.0整合RabbitMQ
如何整合RabbitMQ
1、添加spring-boot-starter-amqp
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-amqp</artifactId>
</dependency>
2、添加配置
spring.rabbitmq.host=localhost
spring.rabbitmq.port=5672
spring.rabbitmq.username=guest
spring.rabbitmq.password=guest
spring.rabbitmq.publisher-confirms=true
spring.rabbitmq.dynamic=true
spring.rabbitmq.cache.connection.mode=channel
3、注入队列
@Configuration
public class RabbitConfig {
@Bean
public Queue Queue() {
return new Queue("hello");
}
}
4、创建操作数据的Repository对象
interface CityRepository extends Repository<City, Long> {
Page<City> findAll(Pageable pageable);
Page<City> findByNameContainingAndCountryContainingAllIgnoringCase(String name,
String country, Pageable pageable);
City findByNameAndCountryAllIgnoringCase(String name, String country);
}
5、创建消费者
@Component
public class RabbitConsumer {
@RabbitHandler
@RabbitListener(queues = "hello")
public void process(@Payload String foo) {
System.out.println(new Date() + ": " + foo);
}
}
6、启动主类
@SpringBootApplication
@EnableScheduling
public class AmqpApplication {
public static void main(String[] args) {
SpringApplication.run(AmqpApplication.class, args);
}
}
控制台输出：
Sun Sep 30 16:30:35 CST 2018: hello
到此，一个简单的SpringBoot2.0集成RabbitMQ就完成了。
熟悉RabbitMQ的小伙伴们应该知道，RabbitMQ在一般的队列基础上，增加了ExChange的概念。ExChange有四种类型：Direct, Topic, Headers and Fanout。其中Headers实际很少使用，Direct较为简单。接下来将详细介绍如何使用topic和Fanout。
Topic Exchange
1、配置Topic规则
@Configuration
public class TopicRabbitConfig {
@Bean
public Queue queueMessage1() {
return new Queue(MQConst.TOPIC_QUEUENAME1);
}
@Bean
public Queue queueMessage2() {
return new Queue(MQConst.TOPIC_QUEUENAME2);
}
@Bean
TopicExchange exchange() {
return new TopicExchange(MQConst.TOPIC_EXCHANGE);
}
@Bean
Binding bindingExchangeMessage(Queue queueMessage1, TopicExchange exchange) {
// 将队列1绑定到名为topicKey.A的routingKey
return BindingBuilder.bind(queueMessage1).to(exchange).with(MQConst.TOPIC_KEY1);
}
@Bean
Binding bindingExchangeMessages(Queue queueMessage2, TopicExchange exchange) {
// 将队列2绑定到所有topicKey.开头的routingKey
return BindingBuilder.bind(queueMessage2).to(exchange).with(MQConst.TOPIC_KEYS);
}
}
2、配置消费者
@Component
public class TopicConsumer {
@RabbitListener(queues = MQConst.TOPIC_QUEUENAME1)
@RabbitHandler
public void process1(String message) {
System.out.println("queue:topic.message1,message:" + message);
}
@RabbitListener(queues = MQConst.TOPIC_QUEUENAME2)
@RabbitHandler
public void process2(String message) {
System.out.println("queue:topic.message2,message:" + message);
}
}
3、生产消息
在Producer类中添加：
// Topic
rabbitTemplate.convertAndSend(MQConst.TOPIC_EXCHANGE, MQConst.TOPIC_KEYS, "from keys");
rabbitTemplate.convertAndSend(MQConst.TOPIC_EXCHANGE, MQConst.TOPIC_KEY1, "from key1");
再次启动主类，控制台输出：
queue:topic.message2,message:from keys
queue:topic.message1,message:from key1
queue:topic.message2,message:from key1
Fanout Exchange
1、配置Fanout规则
@Configuration
public class FanoutRabbitConfig {
@Bean
public Queue MessageA() {
return new Queue(MQConst.FANOUT_QUEUENAME1);
}
@Bean
public Queue MessageB() {
return new Queue(MQConst.FANOUT_QUEUENAME2);
}
@Bean
FanoutExchange fanoutExchange() {
return new FanoutExchange(MQConst.FANOUT_EXCHANGE);
}
@Bean
Binding bindingExchangeA(Queue MessageA, FanoutExchange fanoutExchange) {
return BindingBuilder.bind(MessageA).to(fanoutExchange);
}
@Bean
Binding bindingExchangeB(Queue MessageB, FanoutExchange fanoutExchange) {
return BindingBuilder.bind(MessageB).to(fanoutExchange);
}
}
2.配置消费者
@Component
public class FanoutConsumer {
@RabbitListener(queues = MQConst.FANOUT_QUEUENAME1)
@RabbitHandler
public void process1(String message) {
System.out.println("queue:fanout.message1,message:" + message);
}
@RabbitListener(queues = MQConst.FANOUT_QUEUENAME2)
@RabbitHandler
public void process2(String message) {
System.out.println("queue:fanout.message2,message:" + message);
}
}
3、生产消息
在Producer类中添加：
// FanOut
rabbitTemplate.convertAndSend(MQConst.FANOUT_EXCHANGE, "", "fanout");
再次启动主类，控制台输出：
queue:fanout.message2,message:fanout
queue:fanout.message1,message:fanout
源码地址：GitHub
