简单示例,演示发送、消费。
ActiveMQ的Broker模式:引入一个Broker组件,解耦客户端和服务端。
ActiveMQ支持两种消息传输方式
1)Queue,队列模式,生产者生产了一个消息,只能由一个消费者进行消费
2)Topic,发布/订阅模式,生产者生产了一个消息,可以由多个消费者进行消费
1、ActiveMQ配置
pom.xml
<!-- ActiveMQ jms -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-activemq</artifactId>
</dependency>
application.properties
spring.activemq.broker-url=tcp://localhost:61616
spring.activemq.user=admin
spring.activemq.password=admin
ActivemqConfig.java
package com.test.demo.config;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.command.ActiveMQTopic;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.jms.config.DefaultJmsListenerContainerFactory;
import org.springframework.jms.config.JmsListenerContainerFactory;
@Configuration
public class ActivemqConfig {
@Bean
public Destination destQueue() {
//element="queue" description="An ActiveMQ Queue Destination"
return new ActiveMQQueue("DestinationName-Jms-String");
}
@Bean
public Destination destTopic() {
//element="topic" description="An ActiveMQ Topic Destination"
return new ActiveMQTopic("DestinationName-Jms-Map");
}
/**
* JmsListener注解默认只接收queue消息,如果要接收topic消息,需要设置containerFactory
*/
@Bean
public JmsListenerContainerFactory<?> topicListenerContainer(
ConnectionFactory activeMQConnectionFactory) {
DefaultJmsListenerContainerFactory topicListenerContainer = new DefaultJmsListenerContainerFactory();
topicListenerContainer.setPubSubDomain(true);
topicListenerContainer.setConnectionFactory(activeMQConnectionFactory);
return topicListenerContainer;
}
}
2、业务模拟
ActiveSender.java消息发送
@Component
public class ActiveSender {
@Autowired
private JmsTemplate jmsTemplate;
@Resource(name = "destQueue")
private Destination destQueue;
@Resource(name = "destTopic")
private Destination destTopic;
public void sendString(String message) {
//send this message to destinationName
jmsTemplate.convertAndSend("DestinationName-Jms-String", message);
System.out.println("String发送成功["+message+"]");
}
public void sendMap() {
Map<String, String> map = new HashMap<String, String>();
map.put("name", "Tom");
map.put("age", "35");
//Destination destTopic = new ActiveMQTopic("DestinationName-Jms-Map");
jmsTemplate.convertAndSend(destTopic, map);
System.out.println("HashMap发送成功");
}
}
ActiveReceiver.java消息接收
@Component
public class ActiveReceiver {
@JmsListener(destination = "DestinationName-Jms-String")
public void readMsg(String text) {
System.out.println("接收到Queue消息:" + text);
}
@JmsListener(destination = "DestinationName-Jms-Map", containerFactory = "topicListenerContainer")
public void readMap(Map<String, String> map) {
System.out.println("接收到Topic消息:" + map);
}
}
3、测试
ActiveMQTest.java测试类
@RunWith(SpringRunner.class)
@SpringBootTest
public class ActiveMQTest {
@Autowired
private ActiveSender mySender;
@Test
public void test() throws Exception {
mySender.sendMap();
mySender.sendString("fromActiveMQTest");
}
}