Jms 第一个路由用于将消息放入队列,第二个路由用于读取消息
我对Camel和JMS有问题 我的路线很简单:Jms 第一个路由用于将消息放入队列,第二个路由用于读取消息,jms,apache-camel,Jms,Apache Camel,我对Camel和JMS有问题 我的路线很简单: @Override protected RouteBuilder[] createRouteBuilders() throws Exception { createJmsComponent(); RouteBuilder route1 = new RouteBuilder() { @Override public void configure() thro
@Override
protected RouteBuilder[] createRouteBuilders() throws Exception {
createJmsComponent();
RouteBuilder route1 = new RouteBuilder() {
@Override
public void configure() throws Exception {
from("direct:startpoint")
.log("TO JMS: ${body}")
.to("jms://queue:QUEUE.NAME.OUT?replyTo=QUEUE.NAME.IN&replyToType=Exclusive")
;
}
};
RouteBuilder route2 = new RouteBuilder() {
@Override
public void configure() throws Exception {
from("jms://queue:QUEUE.NAME.IN?receiveTimeout=10000")
.log("FROM JMS: ${body}")
;
}
};
return new RouteBuilder[]{route1, route2};
}
在日志中,我有我需要的:
2012-07-04 16:28:10,443 INFO route1 - TO JMS: message
2012-07-04 16:28:13,477 INFO route2 - FROM JMS: message
但问题是我有个例外:
2012-07-04 16:28:33,960 ERROR o.a.c.p.DefaultErrorHandler - Failed delivery for (MessageId: ID-PLWROW912268-4634-1341412084839-0-1 on ExchangeId: ID-PLWROW912268-4634-1341412084839-0-2). Exhausted after delivery attempt: 1 caught: org.apache.camel.ExchangeTimedOutException: The OUT message was not received within: 20000 millis due reply message with correlationID: ID-PLWROW912268-4634-1341412084839-0-3 not received. Exchange[Message: message]
org.apache.camel.ExchangeTimedOutException: The OUT message was not received within: 20000 millis due reply message with correlationID: ID-PLWROW912268-4634-1341412084839-0-3 not received. Exchange[Message: message]
at org.apache.camel.component.jms.reply.ReplyManagerSupport.processReply(ReplyManagerSupport.java:126) ~[camel-jms-2.9.2.jar:2.9.2]
at org.apache.camel.component.jms.reply.TemporaryQueueReplyHandler.onTimeout(TemporaryQueueReplyHandler.java:61) [camel-jms-2.9.2.jar:2.9.2]
at org.apache.camel.component.jms.reply.CorrelationTimeoutMap.onEviction(CorrelationTimeoutMap.java:53) [camel-jms-2.9.2.jar:2.9.2]
at org.apache.camel.component.jms.reply.CorrelationTimeoutMap.onEviction(CorrelationTimeoutMap.java:30) [camel-jms-2.9.2.jar:2.9.2]
at org.apache.camel.support.DefaultTimeoutMap.purge(DefaultTimeoutMap.java:203) [camel-core-2.9.2.jar:2.9.2]
at org.apache.camel.support.DefaultTimeoutMap.run(DefaultTimeoutMap.java:159) [camel-core-2.9.2.jar:2.9.2]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) [na:1.6.0_23]
at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317) [na:1.6.0_23]
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150) [na:1.6.0_23]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98) [na:1.6.0_23]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180) [na:1.6.0_23]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204) [na:1.6.0_23]
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [na:1.6.0_23]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [na:1.6.0_23]
at java.lang.Thread.run(Thread.java:662) [na:1.6.0_23]
如果我理解正确的话,现在我有两条路线等待响应。Route2从队列中读取响应,route1没有得到响应(因为是由Route2读取的),这就是我得到异常的原因
因此,我需要做什么来获得这个场景:
route1 - only send message to JMS and not waiting for response.
route2 - only read message from JMS.
如果您只想让route1向route2正在侦听的队列发送消息,那么不要使用replyTo或单独的队列…只需这样做
from("direct:startpoint").log("TO JMS: ${body}").to("jms://queue:QUEUE.NAME.IN");
from("jms://queue:QUEUE.NAME.IN").log("FROM JMS: ${body}");
解决方案是使用inOnly模式和preserveMessageQos=true标志
.inOnly("jms://queue:QUEUE.NAME.OUT" +
"?replyTo=QUEUE.NAME.IN" +
"&replyToType=Shared" +
"&preserveMessageQos=true")
如果不使用replyTo,则会出现异常:org.apache.camel.RuntimeExchangeException:无法在exchange:exchange[消息:消息]上解析replyTo目标