我正在编写一个简单的教程.我有一个发布者,它发送关于主题的消息和订阅者以接收它.当我启动应用程序时,Spring配置文件加载,然后我收到以下错误
2011-10-20 21:50:39,340 DEBUG [org.springframework.jms.support.destination.JndiDestinationResolver] - Located object with JNDI name [RateTopic]
2011-10-20 21:50:39,340 DEBUG [org.springframework.jms.connection.CachingConnectionFactory] - Closing cached Session: ActiveMQSession {id=ID:Reverb0253-PC-62259-1319161839013-0:1:3,started=true}
2011-10-20 21:50:39,340 DEBUG [org.springframework.jms.connection.CachingConnectionFactory] - Closing cached Session: ActiveMQSession {id=ID:Reverb0253-PC-62259-1319161839013-0:1:2,started=true}
2011-10-20 21:50:44,348 WARN [org.springframework.jms.listener.DefaultMessageListenerContainer] - Setup of JMS message listener invoker Failed for destination 'RateTopic' - trying to recover. Cause: Destination [RateTopic] is not of expected type [javax.jms.Queue]
org.springframework.jms.support.destination.DestinationResolutionException: Destination [RateTopic] is not of expected type [javax.jms.Queue]
at org.springframework.jms.support.destination.JndiDestinationResolver.validateDestination(JndiDestinationResolver.java:147)
at org.springframework.jms.support.destination.JndiDestinationResolver.resolveDestinationName(JndiDestinationResolver.java:112)
at org.springframework.jms.support.destination.JmsDestinationAccessor.resolveDestinationName(JmsDestinationAccessor.java:100)
at org.springframework.jms.listener.AbstractPollingMessageListenerContainer.createListenerConsumer(AbstractPollingMessageListenerContainer.java:221)
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.initResourcesIfNecessary(DefaultMessageListenerContainer.java:1081)
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.invokeListener(DefaultMessageListenerContainer.java:1057)
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.executeOngoingLoop(DefaultMessageListenerContainer.java:1050)
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.run(DefaultMessageListenerContainer.java:947)
at java.lang.Thread.run(Thread.java:722)
为什么春天认为它应该是一个队列而不是主题
我的jndi文件看起来像这样
java.naming.factory.initial = org.apache.activemq.jndi.ActiveMQInitialContextFactory
java.naming.provider.url = tcp://localhost:61616
java.naming.security.principal=system
java.naming.security.credentials=manager
connectionFactoryNames = TopicCF
topic.RateTopic = RateTopic
spring配置文件是
diobjectfactorybean">
我的订阅者实现了MessageListener
@Override
public void onMessage(Message message) {
try {
// Get the data from the message
BytesMessage msg = (BytesMessage) message;
double newRate = msg.readDouble();
// If the rate is at least 1 point lower than the current rate,then
//recommend refinancing
if ((currentRate - newRate) >= 1.0) {
System.out.println(
"New rate = " + newRate + " - Consider refinancing loan");
} else {
System.out.println("New rate = " + newRate + " - Keep existing loan");
}
System.out.println("\nWaiting for rate updates...");
} catch (Exception ex) {
ex.printStackTrace(System.out);
System.exit(1);
}
}
public static void main(String argv[]) {
ApplicationContext ctx = new ClassPathXmlApplicationContext("app-context.xml");
try {
// Run until enter is pressed
BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
System.out.println("TBorrower application started");
System.out.println("Press enter to quit application");
stdin.readLine();
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
最佳答案
您尝试使用某个主题,但是您没有在
DefaultMessageListenerContainer
上设置pubSubDomain
属性,它默认为“false”,这意味着点对点,这意味着队列而不是主题.因此,错误消息告诉您RateTopic不是javax.jms.Queue.