Liferay messagebus configure.

最新推荐文章于 2018-05-21 15:40:15 发布

原创最新推荐文章于 2018-05-21 15:40:15 发布 · 481 阅读

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#liferay #messageBus

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本文详细介绍了如何在Spring框架中配置消息监听器、目的地和消息配置器，以及如何通过常量文件调用消息总线发送消息。重点阐述了在不同组件间的通信流程和实现方式。

1. under META-INF add message-spring.xml file .

<?xml version="1.0"?>
<beans
    default-destroy-method="destroy"
    default-init-method="afterPropertiesSet"
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
     http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
    <!-- Listeners -->
    <bean id="test.message.notification.listener" class="com.test.message.listener.NotifMessageListener" />
    
    <!-- Destinations -->
    <bean id="test.message.notification.destination" class="com.liferay.portal.kernel.messaging.SerialDestination">
        <property name="name" value="test/message/notification/destination" />
    </bean>
	
    <!-- Configurator -->
    <bean id="messagingConfigurator" class="com.liferay.portal.kernel.messaging.config.PluginMessagingConfigurator">
        <property name="messageListeners">
            <map key-type="java.lang.String" value-type="java.util.List">
                <entry key="test/message/notification/destination">
                    <list value-type="com.liferay.portal.kernel.messaging.MessageListener">
                        <ref bean="test.message.notification.listener" />
                    </list>
                </entry>
            </map>
        </property>
        <property name="destinations">
            <list>
                <ref bean="test.message.notification.destination"/>
            </list>
        </property>
        
    </bean>    
</beans>

2. under META-INFadd in ext-spring.xml

<import resource="message-spring.xml" />

3.under test.message.notification.listener create NotifMessageListener.java

public class NotifMessageListener implements MessageListener {
	
	private static final Log LOG = LogFactoryUtil.getLog(NotifMessageListener.class);

	@Override
	public void receive(Message message) throws MessageListenerException {
		try {
			doReceive(message);
		} catch (Exception e) {
			LOG.error("Unable to process message " + message, e);
		}
	}
	
	/**
	 * 
	 * @param message
	 */
	protected void doReceive(Message message) {
		long companyId = (Long) message.get("companyId");
		long programId = (Long) message.get("programId");
		long userId = (Long) message.get("userId");
		long opinioSurveyId = (Long) message.get("opinioSurveyId");
		
		LOG.info("Process notification if defined in the alert category[companyId=" 
				+ companyId + ", programId=" + programId + ", userId=" + userId + 
				", opinioSurveyId=" + opinioSurveyId + "]");
		
		// Process the notification
		AddAlertToQueueUtil.addAlertToQueue(companyId, programId, userId, opinioSurveyId);
	}
}

4.add constants file

public class MessageBusConstants {

	public static final String NOTIFICATION_MESSAGE = "test/message/notification/destination";
}

5.how to call messgeBus method

Message notificationMsg = new Message();
notificationMsg.put("companyId", srvy.getCompanyId());
notificationMsg.put("programId", ParamUtil.getLong(actionRequest, "programId", 0)); 
notificationMsg.put("userId", srvy.getUserId());
notificationMsg.put("opinioSurveyId", srvy.getOpinioSurveyId());
MessageBusUtil.sendMessage(MessageBusConstants.NOTIFICATION_MESSAGE, notificationMsg);

END.