Question

我正在学习Spring Integration JMS。由于ActiveMQ是一个消息代理。我指的是这里给出的项目 - ＆gt; http://www.javaworld.com/article/2142107/spring-framework/open-source-java-projects-spring-integration.html?page=2#

但我想知道如何在ActiveMQ中保留消息。我的意思是我启动了ActiveMQ然后使用REST客户端发送请求。我正在呼叫publishService.send( message ); for for循环50次，而接收器端我有10秒的睡眠定时器。这样就可以让50条消息排队并以10秒的间隔开始处理。

修改

请看下面的屏幕截图：

它说有50条信息排队，其中5条已经出列。

然后在我之间我停止了ActiveMQ服务器，当它消耗掉50个消息中的5个消息然后再次重新启动它。

但后来我期待它在Message Enqueued栏中显示剩下的45。但是我可以在那里看到0（见下面的截图），它们在服务器重启后都消失了，而不必保留剩余的45条消息。我怎么能解决这个问题？

请查看以下配置：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:int="http://www.springframework.org/schema/integration"
       xmlns:int-jms="http://www.springframework.org/schema/integration/jms"
       xmlns:oxm="http://www.springframework.org/schema/oxm"
       xmlns:int-jme="http://www.springframework.org/schema/integration"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
                http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
                http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration.xsd
                http://www.springframework.org/schema/integration/jms http://www.springframework.org/schema/integration/jms/spring-integration-jms.xsd
                http://www.springframework.org/schema/oxm http://www.springframework.org/schema/oxm/spring-oxm-3.0.xsd">


    <!-- Component scan to find all Spring components -->
    <context:component-scan base-package="com.geekcap.springintegrationexample" />

    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="order" value="1" />
        <property name="messageConverters">
            <list>
                <!-- Default converters -->
                <bean class="org.springframework.http.converter.StringHttpMessageConverter"/>
                <bean class="org.springframework.http.converter.FormHttpMessageConverter"/>
                <bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter" />
                <bean class="org.springframework.http.converter.xml.SourceHttpMessageConverter"/>
                <bean class="org.springframework.http.converter.BufferedImageHttpMessageConverter"/>
                <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter" />
            </list>
        </property>
    </bean>

    <!-- Define a channel to communicate out to a JMS Destination -->
    <int:channel id="topicChannel"/>

    <!-- Define the ActiveMQ connection factory -->
    <bean id="connectionFactory" class="org.apache.activemq.spring.ActiveMQConnectionFactory">
        <property name="brokerURL" value="tcp://localhost:61616"/>
    </bean>

    <!--
        Define an adaptor that route topicChannel messages to the myTopic topic; the outbound-channel-adapter
        automagically fines the configured connectionFactory bean (by naming convention
      -->
    <int-jms:outbound-channel-adapter channel="topicChannel"
                                      destination-name="topic.myTopic"
                                      pub-sub-domain="true" />

    <!-- Create a channel for a listener that will consume messages-->
    <int:channel id="listenerChannel" />

    <int-jms:message-driven-channel-adapter id="messageDrivenAdapter"
                                            channel="getPayloadChannel"
                                            destination-name="topic.myTopic"
                                            pub-sub-domain="true" />

    <int:service-activator input-channel="listenerChannel" ref="messageListenerImpl" method="processMessage" />

    <int:channel id="getPayloadChannel" />

    <int:service-activator input-channel="getPayloadChannel" output-channel="listenerChannel" ref="retrievePayloadServiceImpl" method="getPayload" />

</beans>

另请参阅代码：

控制器，我将在哪里发送消息for for循环：

@Controller
public class MessageController
{
    @Autowired
    private PublishService publishService;

    @RequestMapping( value = "/message", method = RequestMethod.POST )
    @ResponseBody
    public void postMessage( @RequestBody com.geekcap.springintegrationexample.model.Message message, HttpServletResponse response )
    {
        for(int i = 0; i < 50; i++){
            // Publish the message
            publishService.send( message );

            // Set the status to 201 because we created a new message
            response.setStatus( HttpStatus.CREATED.value() );
        }
    }

}

我已应用计时器的消费者代码：

@Service
public class MessageListenerImpl
{
    private static final Logger logger = Logger.getLogger( MessageListenerImpl.class );

    public void processMessage( String message )
    {
        try {
            Thread.sleep(10000);
            logger.info( "Received message: " + message );
            System.out.println( "MessageListener::::::Received message: " + message );
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }
}

通过搜索更多，我发现here 根据JMS规范，默认传递模式是持久的。但在我的情况下它似乎没有用。

请帮我正确配置，以便消息可以在代理失败时保持不变。

Answer 1

这通常不是问题，而是构建activeMQ的方式。

您可以在书中找到以下说明＆＃39; ActiveMQ in action＆＃39;

消息被消费并确认后消费者，它通常从经纪人的消息存储中删除。

因此，当您重新启动服务器时，它只会向您显示代理的消息存储库中的消息。在大多数情况下，您永远不需要查看已处理的消息。

希望这有帮助！

祝你好运！

在服务器重新启动时在ActiveMQ中保留消息

1 个答案: