ActiveMQ學習筆記(二) JMS與Spring

上文可見，JMS Native API使用起來不是特別方便。好在Spring提供了很好的JMS支持。 

(一)配置ConnectionFactory 
若是使用鏈接池的話，不要忘記activemq-pool-5.6.0.jar 

<bean id="connectionFactory" class="org.apache.activemq.pool.PooledConnectionFactory" destroy-method="stop">
    <property name="connectionFactory" ref="innerConnectionFactory" />
</bean>

<bean id="innerConnectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">
    <property name="brokerURL" value="tcp://localhost:61616" />
</bean>

(二)配置一個Destination做爲默認投遞目標 

<bean id="defaultDestination" class="org.apache.activemq.command.ActiveMQQueue">
    <constructor-arg index="0" value="ztgame.amt.default.queue" />
</bean>

(三)核心JmsTemplate 

<bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">
    <property name="connectionFactory" ref="connectionFactory" />
    <property name="defaultDestination" ref="defaultDestination" />
</bean>

(四)JMS事務 

<bean id="jmsTransactionManager" class="org.springframework.jms.connection.JmsTransactionManager">
    <property name="connectionFactory" ref="connectionFactory" />
</bean>

<tx:annotation-driven transaction-manager="jmsTransactionManager" />

(五)編寫消息驅動Bean,兩個接口實現一個便可 

• javax.jms.MessageListener
• org.springframework.jms.listener.SessionAwareMessageListener

package com.ztgame.amt.jms.mdp;

import javax.jms.JMSException;
import javax.jms.Session;
import javax.jms.TextMessage;

import org.springframework.jms.listener.SessionAwareMessageListener;
import org.springframework.stereotype.Component;

@Component("defaultMessageHandler")
public class DefaultMessageHandler implements SessionAwareMessageListener<TextMessage> {

    public void onMessage(TextMessage message, Session session)
            throws JMSException {

        String text = message.getText();

        if (text.length() == 0) {
            System.out.println("<empty>");
        } else {
            System.out.println(text);
        }
    }
}

(六)配置消息驅動Bean 

<!-- Message Driven POJOs -->
<jms:listener-container connection-factory="connectionFactory">
    <jms:listener destination="ztgame.amt.default.queue" ref="defaultMessageHandler" />
</jms:listener-container>

(七)編寫測試代碼 

package junit;

import java.util.UUID;

import javax.annotation.Resource;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.Session;

import org.junit.Test;
import org.springframework.jms.core.JmsTemplate;
import org.springframework.jms.core.MessageCreator;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.AbstractJUnit4SpringContextTests;

@ContextConfiguration({ "classpath:spring-beans.xml", "classpath:spring-jms.xml" })
public class TestSomeService extends AbstractJUnit4SpringContextTests {

    @Resource
    private JmsTemplate jmsTempalte;

    @Test
    public void test() {
        jmsTempalte.send(new MessageCreator() {
            public Message createMessage(Session session) throws JMSException {
                return session.createTextMessage(UUID.randomUUID().toString());
            }
        });
    }
}

• spring-jms.zip (805 Bytes)
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