本篇開始將具體介紹SpringBoot如何整合其它專案。
如何建立SpringBoot專案
訪問https://start.spring.io/。
如何整合ActiveMQ
1、新增spring-boot-starter-activemq依賴
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-activemq</artifactId>
</dependency>
複製程式碼2、新增配置
spring.activemq.in-memory=true
spring.activemq.pool.enabled=false
複製程式碼3、新增SampleActiveMQApplication類
@SpringBootApplication
@EnableJms
public class SampleActiveMQApplication {
@Bean
public Queue queue() {
return new ActiveMQQueue("sample.queue");
}
public static void main(String[] args) {
SpringApplication.run(SampleActiveMQApplication.class, args);
}
}
複製程式碼4、新增Consumer類
@Component
public class Consumer {
@JmsListener(destination = "sample.queue")
public void receiveQueue(String text) {
System.out.println(text);
}
}
複製程式碼5、新增Producer類
@Component
public class Producer implements CommandLineRunner {
@Autowired
private JmsMessagingTemplate jmsMessagingTemplate;
@Autowired
private Queue queue;
@Override
public void run(String... args) throws Exception {
send("Sample message");
System.out.println("Message was sent to the Queue");
}
public void send(String msg) {
this.jmsMessagingTemplate.convertAndSend(this.queue, msg);
}
}
複製程式碼6、啟動服務 控制檯輸出：
Message was sent to the Queue
Sample message
複製程式碼以上例子使用的是SpringBoot內部的ActiveMQ，實際使用時肯定會用外部的ActiveMQ。
如何連線外部的ActiveMQ
1、新增依賴
<dependency>
<groupId>org.apache.activemq</groupId>
<artifactId>activemq-pool</artifactId>
</dependency>
複製程式碼2、修改配置
spring.activemq.broker-url=tcp://localhost:61616
spring.activemq.close-timeout=5000
spring.activemq.in-memory=false
spring.activemq.pool.enabled=true
spring.activemq.pool.max-connections=100
spring.activemq.send-timeout=3000
複製程式碼3、啟動服務 首先，確保ActiveMQ已經啟動。控制檯輸出：
Message was sent to the Queue
Sample message
複製程式碼如何使用topic
1、在SampleActiveMQApplication中新增：
@Bean
public Topic topic() {
return new ActiveMQTopic("sample.topic");
}
@Bean
public JmsListenerContainerFactory<?> jmsListenerContainerTopic(ConnectionFactory activeMQConnectionFactory) {
DefaultJmsListenerContainerFactory bean = new DefaultJmsListenerContainerFactory();
bean.setPubSubDomain(true);
bean.setConnectionFactory(activeMQConnectionFactory);
return bean;
}
複製程式碼2、建立TopicConsumer類
@Component
public class TopicConsumer {
@JmsListener(destination = "sample.topic", containerFactory = "jmsListenerContainerTopic")
public void receiveTopic1(String text) {
System.out.println(text);
}
@JmsListener(destination = "sample.topic", containerFactory = "jmsListenerContainerTopic")
public void receiveTopic2(String text) {
System.out.println(text);
}
}
複製程式碼3、建立TopicProducer類
@Component
public class TopicProducer implements CommandLineRunner {
@Autowired
private JmsMessagingTemplate jmsMessagingTemplate;
@Autowired
private Topic topic;
@Override
public void run(String... args) throws Exception {
send("Topic message");
System.out.println("Message was sent to the Topic");
}
public void send(String msg) {
this.jmsMessagingTemplate.convertAndSend(this.topic, msg);
}
}
複製程式碼4、啟動服務 控制檯輸出：
Message was sent to the Topic
Topic message
Topic message
複製程式碼