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详解spring boot整合JMS(ActiveMQ实现)

时间:2020-10-16 21:55:24 | 栏目:JAVA代码 | 点击:

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!!! 

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