如何整合RabbitMQ
1、新增spring-boot-starter-amqp
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-amqp</artifactId>
</dependency>
複製程式碼2、新增配置
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
複製程式碼3、注入佇列
@Configuration
public class RabbitConfig {
@Bean
public Queue Queue() {
return new Queue("hello");
}
}
複製程式碼4、建立運算元據的Repository物件
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);
}
複製程式碼5、建立消費者
@Component
public class RabbitConsumer {
@RabbitHandler
@RabbitListener(queues = "hello")
public void process(@Payload String foo) {
System.out.println(new Date() + ": " + foo);
}
}
複製程式碼6、啟動主類
@SpringBootApplication
@EnableScheduling
public class AmqpApplication {
public static void main(String[] args) {
SpringApplication.run(AmqpApplication.class, args);
}
}
複製程式碼控制檯輸出：
Sun Sep 30 16:30:35 CST 2018: hello
複製程式碼到此，一個簡單的SpringBoot2.0整合RabbitMQ就完成了。
熟悉RabbitMQ的小夥伴們應該知道，RabbitMQ在一般的佇列基礎上，增加了ExChange的概念。ExChange有四種型別：Direct, Topic, Headers and Fanout。其中Headers實際很少使用，Direct較為簡單。接下來將詳細介紹如何使用topic和Fanout。
Topic Exchange
1、配置Topic規則
@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) {
// 將佇列1繫結到名為topicKey.A的routingKey
return BindingBuilder.bind(queueMessage1).to(exchange).with(MQConst.TOPIC_KEY1);
}
@Bean
Binding bindingExchangeMessages(Queue queueMessage2, TopicExchange exchange) {
// 將佇列2繫結到所有topicKey.開頭的routingKey
return BindingBuilder.bind(queueMessage2).to(exchange).with(MQConst.TOPIC_KEYS);
}
}
複製程式碼2、配置消費者
@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);
}
}
複製程式碼3、生產訊息
在Producer類中新增：
// Topic
rabbitTemplate.convertAndSend(MQConst.TOPIC_EXCHANGE, MQConst.TOPIC_KEYS, "from keys");
rabbitTemplate.convertAndSend(MQConst.TOPIC_EXCHANGE, MQConst.TOPIC_KEY1, "from key1");
複製程式碼再次啟動主類，控制檯輸出：
queue:topic.message2,message:from keys
queue:topic.message1,message:from key1
queue:topic.message2,message:from key1
複製程式碼Fanout Exchange
1、配置Fanout規則
@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);
}
}
複製程式碼2.配置消費者
@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);
}
}
複製程式碼3、生產訊息
在Producer類中新增：
// FanOut
rabbitTemplate.convertAndSend(MQConst.FANOUT_EXCHANGE, "", "fanout");
複製程式碼再次啟動主類，控制檯輸出：
queue:fanout.message2,message:fanout
queue:fanout.message1,message:fanout
複製程式碼原始碼地址：GitHub