SpringBoot整合ActiveMq

     新建一个SpringBoot项目，版本为：2.2.6.RELEASE，整合ActiveMq需要引用的pom为依赖及配置文件如下：

<dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-activemq</artifactId>
 </dependency>

#mq
spring.activemq.broker-url: failover:(tcp://127.0.0.1:61616)?maxReconnectAttempts=3&maxReconnectDelay=5000
spring:
  activemq:
    user: admin
    password: admin
    packages:
      trust-all: true
spring.activemq.in-memory: false
#true表示使用连接池；false时，每发送一条数据创建一个连接
spring.activemq.pool.enabled: true
#连接池最大连接数
spring.activemq.pool.max-connections: 10
#空闲的连接过期时间，默认为30秒
spring.activemq.pool.idle-timeout: 30000
#强制的连接过期时间，与idleTimeout的区别在于：idleTimeout是在连接空闲一段时间失效，而expiryTimeout不管当前连接的情况，只要达到指定时间就失效。默认为0，never
spring.activemq.pool.expiry-timeout: 0
#mq end

jms.card.active.message.handler.destination: jms.card.active.message.handler.destination

    发送消息代码如下：

public class CardActiveMessageSender {
    private static final Logger logger = LoggerFactory.getLogger(CardActiveMessageSender.class);

    @Value("${jms.card.active.message.handler.destination}")
    String destinationName;

    @Resource
    private JmsMessagingTemplate jmsMessagingTemplate;

    public void sendMsg(OrdersDto ordersDto){
        logger.info("发送入账流水:{}", JsonUtil.objToJson(ordersDto));
        String tradeString = JsonUtil.objToJson(ordersDto);
        jmsMessagingTemplate.convertAndSend(destinationName,tradeString);
        logger.info("发送入账流水成功");
    }
}

   接受消息代码如下：

public class CardActiveMessageHandler {

    private static final Logger logger = LoggerFactory.getLogger(CardActiveMessageHandler.class);

    @JmsListener(destination = "${jms.card.active.message.handler.destination}")
    public void handleMessage(String request){
        try {
            logger.info("接受消息如下:{}",request);
        } catch (Exception e) {
            logger.error(e.getMessage(),e);
        }
    }
}

      按上面的配置启动项目，会报错，错误信息如下：

***************************
APPLICATION FAILED TO START
***************************

Description:

A component required a bean of type 'org.springframework.jms.core.JmsMessagingTemplate' that could not be found.

The following candidates were found but could not be injected:
    - Bean method 'jmsMessagingTemplate' in 'JmsAutoConfiguration.MessagingTemplateConfiguration' not loaded because Ancestor org.springframework.boot.autoconfigure.jms.JmsAutoConfiguration did not match


Action:

Consider revisiting the entries above or defining a bean of type 'org.springframework.jms.core.JmsMessagingTemplate' in your configuration.

     从报错可以看出jmsMessagingTemplate未被正常注入。

解决方式有两种：

     1.增加pom依赖（springboot2.1+时引用）：

 <dependency>
   <groupId>org.messaginghub</groupId>
   <artifactId>pooled-jms</artifactId>
 </dependency>

     重新编译成功，此方式已经在本地验证通过

     如果是springboot2.0及以下版本则引用（本人未验证）

<dependency>
    <groupId>org.apache.activemq</groupId>
    <artifactId>activemq-pool</artifactId>
</dependency>

     上面两种因为版本不同而引用不同依赖的原因是：两种版本使用连接池时候的连接池对象不一样，2.0以下版本使用的是PooledConnectionFactory，它存在于org.apache.activemq.pool.PooledConnectionFactory，2.1+版本使用的是JmsPoolConnectionFactory，它存在于org.messaginghub.pooled.jms.JmsPoolConnectionFactory。

 2.使用@Configuration注入，配置如下：

@Configuration
public class MQConfig {

    @Value("${spring.activemq.broker-url}")
    private String brokerUrl;
    @Value("${spring.activemq.user}")
    private String user;
    @Value("${spring.activemq.password}")
    private String password;

    @Bean
    public ConnectionFactory connectionFactory(){
        ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory();
        connectionFactory.setBrokerURL(brokerUrl);
        connectionFactory.setUserName(user);
        connectionFactory.setPassword(password);
        return connectionFactory;
    }
    @Bean
    public JmsTemplate genJmsTemplate(){
        return new JmsTemplate(connectionFactory());

    }
    @Bean
    public JmsMessagingTemplate jmsMessageTemplate(){
        return new JmsMessagingTemplate(connectionFactory());
    }

}

      重启启动项目成功，已在本地测试通过。

      测试结果：

2020-06-29 15:50:50.711 [] [http-nio-8080-exec-1] INFO  o.s.web.servlet.DispatcherServlet :Initializing Servlet 'dispatcherServlet'
2020-06-29 15:50:50.720 [] [http-nio-8080-exec-1] INFO  o.s.web.servlet.DispatcherServlet :Completed initialization in 8 ms
2020-06-29 15:50:50.831 [] [http-nio-8080-exec-1] INFO  c.y.p.d.m.s.CardActiveMessageSender :发送入账流水:{"orderBatchId":123456,"orderId":123456,"status":"1"}
2020-06-29 15:50:50.910 [] [http-nio-8080-exec-1] INFO  c.y.p.d.m.s.CardActiveMessageSender :发送入账流水成功
2020-06-29 15:50:50.919 [] [DefaultMessageListenerContainer-1] INFO  c.y.p.d.m.h.CardActiveMessageHandler :接受消息如下:{"orderBatchId":123456,"orderId":123456,"status":"1"}