时间:2020-10-16 21:55:24 | 栏目:JAVA代码 | 点击:次
本文介绍了spring boot整合JMS(ActiveMQ实现),分享给大家,也给自己留个学习笔记。
一、安装ActiveMQ
具体的安装步骤,请参考我的另一篇文章:https://www.jb51.net/article/127117.htm
二、新建spring boot工程,并加入JMS(ActiveMQ)依赖
三、工程结构
pom依赖如下:
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.chhliu.springboot.jms</groupId> <artifactId>springboot-jms</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>springboot-jms</name> <description>Demo project for Spring Boot Jms</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.4.3.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.7</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-activemq</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
四、修改application.properties配置文件
## URL of the ActiveMQ broker. Auto-generated by default. For instance `tcp://localhost:61616` # failover:(tcp://localhost:61616,tcp://localhost:61617) # tcp://localhost:61616 spring.activemq.broker-url=tcp://localhost:61616 spring.activemq.in-memory=true spring.activemq.pool.enabled=false //如果此处设置为true,需要加如下的依赖包,否则会自动配置失败,报JmsMessagingTemplate注入失败
<dependency> <groupId>org.apache.activemq</groupId> <artifactId>activemq-pool</artifactId> <!-- <version>5.7.0</version> --> </dependency>
五、消息生产者
package com.chhliu.springboot.jms; import javax.jms.Destination; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.jms.core.JmsMessagingTemplate; import org.springframework.stereotype.Service; @Service("producer") public class Producer { @Autowired // 也可以注入JmsTemplate,JmsMessagingTemplate对JmsTemplate进行了封装 private JmsMessagingTemplate jmsTemplate; // 发送消息,destination是发送到的队列,message是待发送的消息 public void sendMessage(Destination destination, final String message){ jmsTemplate.convertAndSend(destination, message); } }
六、消息消费者
package com.chhliu.springboot.jms; import org.springframework.jms.annotation.JmsListener; import org.springframework.stereotype.Component; @Component public class Consumer { // 使用JmsListener配置消费者监听的队列,其中text是接收到的消息 @JmsListener(destination = "mytest.queue") public void receiveQueue(String text) { System.out.println("Consumer收到的报文为:"+text); } }
消费者2的代码同上,注意,消息消费者的类上必须加上@Component,或者是@Service,这样的话,消息消费者类就会被委派给Listener类,原理类似于使用SessionAwareMessageListener以及MessageListenerAdapter来实现消息驱动POJO
七、测试
package com.chhliu.springboot.jms; import javax.jms.Destination; import org.apache.activemq.command.ActiveMQQueue; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.test.context.junit4.SpringRunner; @RunWith(SpringRunner.class) @SpringBootTest public class SpringbootJmsApplicationTests { @Autowired private Producer producer; @Test public void contextLoads() throws InterruptedException { Destination destination = new ActiveMQQueue("mytest.queue"); for(int i=0; i<100; i++){ producer.sendMessage(destination, "myname is chhliu!!!"); } } }
测试结果如下:
Consumer2收到的报文为:myname is chhliu!!! Consumer收到的报文为:myname is chhliu!!! Consumer2收到的报文为:myname is chhliu!!! Consumer收到的报文为:myname is chhliu!!! Consumer2收到的报文为:myname is chhliu!!! Consumer收到的报文为:myname is chhliu!!! Consumer2收到的报文为:myname is chhliu!!! Consumer收到的报文为:myname is chhliu!!! Consumer2收到的报文为:myname is chhliu!!! Consumer收到的报文为:myname is chhliu!!! Consumer2收到的报文为:myname is chhliu!!! Consumer收到的报文为:myname is chhliu!!! Consumer2收到的报文为:myname is chhliu!!!
经过上面的几个步骤,spring boot和Jms就基本上整合完成了,是不是使用起来很方便了!
八、实现双向队列
1、下面首先来对Consumer2这个消费者来进行下改造,代码如下:
package com.chhliu.springboot.jms; import org.springframework.jms.annotation.JmsListener; import org.springframework.messaging.handler.annotation.SendTo; import org.springframework.stereotype.Component; @Component public class Consumer2 { @JmsListener(destination = "mytest.queue") @SendTo("out.queue") public String receiveQueue(String text) { System.out.println("Consumer2收到的报文为:"+text); return "return message"+text; } }
从上面的代码可以看出,我们在receiveQueue方法上面多加了一个注解@SendTo("out.queue"),该注解的意思是将return回的值,再发送的"out.queue"队列中,下面我们再来跑一下前面的测试,在监控页面中,我们发现,"out.queue"队列中已经有内容了,如下:
进入Browse界面观看:
最后看下收到的具体信息:
我们发现,该队列中的消息,就是我们返回的值!
九、对Producer进行改造
通过上面的示例,我们现在对Producer进行改造,使其既能生产报文,又能消费队列中的报文,代码如下:
package com.chhliu.springboot.jms; import javax.jms.Destination; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.jms.annotation.JmsListener; import org.springframework.jms.core.JmsMessagingTemplate; import org.springframework.stereotype.Service; @Service("producer") public class Producer { @Autowired private JmsMessagingTemplate jmsTemplate; public void sendMessage(Destination destination, final String message){ jmsTemplate.convertAndSend(destination, message); } @JmsListener(destination="out.queue") public void consumerMessage(String text){ System.out.println("从out.queue队列收到的回复报文为:"+text); } }
测试结果如下:
从out.queue队列收到的回复报文为:return messagemyname is chhliu!!! Consumer收到的报文为:myname is chhliu!!! Consumer2收到的报文为:myname is chhliu!!! 从out.queue队列收到的回复报文为:return messagemyname is chhliu!!! Consumer收到的报文为:myname is chhliu!!! Consumer2收到的报文为:myname is chhliu!!! 从out.queue队列收到的回复报文为:return messagemyname is chhliu!!! Consumer收到的报文为:myname is chhliu!!! Consumer2收到的报文为:myname is chhliu!!! 从out.queue队列收到的回复报文为:return messagemyname is chhliu!!!