消息沒有回覆到

Question

消息不會有任何replyTo。它只是將消息放在隊列中，並且期望任何「單向」答覆，但是如果消息處理失敗，則需要回退以便其他服務器可以處理它。所以，爲了處理我使用的是發佈 - 訂閱通道像下面

<int:publish-subscribe-channel id="SplitChannel"> 
</int:publish-subscribe-channel> 
<int-jms:inbound-gateway request-channel="UChannel" request-destination-name="U" extract-request-payload="true" acknowledge="transacted" concurrent-consumers="5" max-messages-per-task="5"/> 
<int:chain input-channel="UChannel"> 
    <int-http:outbound-gateway 
     url="http://localhost/u.php?fileid={fileid}" 
     http-method="GET" 
     reply-channel="nullChannel"> 
    <int-http:uri-variable name="fileid" expression="headers.fileid"/> 
    </int-http:outbound-gateway> 
</int:chain> 

我得到的錯誤如下

DEBUG: [May-30 00:43:28,768] jms.listener.DefaultMessageListenerContainer - Initiating transaction rollback on application exception 
javax.jms.InvalidDestinationException: Cannot determine reply destination: Request message does not contain reply-to destination, and no default reply destination set. 
DEBUG: [May-30 00:43:28,768] apache.activemq.ActiveMQSession - 43979-1369895783067-0:15:1 Transaction Rollback 

Answer 1

對該消息的<gateway/>是雙向的整合;通道適配器是單向的;改爲使用<int-jms:message-driven-channel-adapter/>。