[英]Spring JMS configuration of a queue Consumer
我正在嘗試運行一個非常基本的應用程序來學習Spring JMS + ActiveMQ。 我看到生產者正在創建消息(sysout),但沒有在我的使用者中顯示任何消息,也沒有引發異常。 我想這里缺少一些簡單的東西; 非常感謝您的幫助。
[編輯,以下代碼有效]
制片人:
@Component
public class JmsMessageProducer
{
@Autowired
private JmsTemplate template;
public void generateMessages() throws JMSException
{
template.send(new MessageCreator()
{
public Message createMessage(Session session) throws JMSException
{
System.out.println("sending..");
TextMessage message = session.createTextMessage("this is a Producer created message!");
return message;
}
});
}
}
消費者:
@Component
public class JmsMessageConsumer implements MessageListener {
@Override
public void onMessage(Message message) {
if (message instanceof TextMessage) {
TextMessage tm = (TextMessage) message;
try {
System.out.println("CONSUMER - received ["+tm.getText()+"]");
}
catch (Throwable th) {
th.printStackTrace();
}
}
}
}
生產者配置:
<context:component-scan base-package="mrpomario.springcore.jms"/> <!-- finds the JmsMessageProducer -->
<bean id="connectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">
<property name="brokerURL" value="tcp://localhost:8082"/>
</bean>
<bean id="pomarioQueue" class="org.apache.activemq.command.ActiveMQQueue">
<constructor-arg value="mrpomario.springcore.jms.queue"/>
</bean>
<bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">
<property name="connectionFactory" ref="connectionFactory"/>
<property name="defaultDestination" ref="pomarioQueue"/>
</bean>
使用者配置:
<jms:listener-container>
<jms:listener ref="jmsMessageConsumer" method="onMessage" destination="mrpomario.springcore.jms.queue"/>
</jms:listener-container>
<bean id="pomarioQueue" class="org.apache.activemq.command.ActiveMQQueue">
<constructor-arg value="mrpomario.springcore.jms.queue"/>
</bean>
<bean id="connectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">
<property name="brokerURL" value="tcp://localhost:8082"/>
</bean>
<amq:broker id="broker" useJmx="false" persistent="false">
<amq:transportConnectors>
<amq:transportConnector uri="tcp://localhost:8082" />
</amq:transportConnectors>
</amq:broker>
測試用例:
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:mrpomario/springcore/jms/jms-config.xml")
public class JmsTest
{
@Autowired
JmsMessageProducer jmsMessageProducer;
@Test
public void test_Single_Queue_Producer_and_Consumer_Unidirectional() throws JMSException
{
try
{
jmsMessageProducer.generateMessages();
assertTrue(true);
}
catch (Throwable th)
{
System.out.println("\n\nJmsTest: remote invocation failed. Ensure the web server is running.\n\n");
}
}
}
我在Java EE容器(mvn jetty:run)內運行生產者,其中還運行Spring MVC應用程序。
我認為您最終將向兩個完全不同的代理(以及隨后的不同隊列)發送和使用:
將您的代理定義在一個地方,例如生產者配置:
<amq:broker id="broker" useJmx="false" persistent="false">
<amq:transportConnectors>
<amq:transportConnector uri="tcp://localhost:8082" />
<amq:transportConnector uri="vm://localhost" />
</amq:transportConnectors>
</amq:broker>
<amq:connectionFactory id="jmsFactory" brokerURL="vm://localhost" />
從使用者配置中刪除代理配置,並僅具有connectionFactory:兩個(如果您位於同一虛擬機中):
<amq:connectionFactory id="jmsFactory" brokerURL="vm://localhost" />
或(如果是遠程的):
<amq:connectionFactory id="jmsFactory" brokerURL="tcp://localhost:8082" />
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