目前，我们需要在spring集成流程中处理异常。
当前的解决方案是通过Aspects处理从任何POJO（变换器，聚合器，服务等）抛出的异常。在这些方面，将发送一条发生异常的推文。但是，这些方面不包括例如Spring Integration Flow抛出的异常。也就是说，如果<object-to-json-transformer>中发生异常，或<int-http:outbound-gateway>返回500状态。
我们需要一种方法来处理这个问题。目前我们看到我们可以让流程的开始（网关）附加一个错误通道，并在此错误通道中发送推文。但问题是我们在错误通道调用的服务中也有业务逻辑。因此，我们需要混合推文（通知）和业务问题。这也意味着每个错误频道服务都需要手动编程以发送推文。因此，如果新开发人员创建了新的错误频道服务，他/她可能会忘记输入推文代码。
除了特定于流的错误服务之外，还有什么方法可以放置一个通用的全局错误句柄。然后在常见的全局错误处理程序代码中运行所有通知推文逻辑和任何其他横切关注点。那么最好的策略是什么。
更新1
我已经提出了以下代码，但它似乎给出了StackOverFlowException，但是当我将有效负载路由通道更改为nullChannel时，错误就消失了
<int:publish-subscribe-channel id="global-wire-tap-channel" />
<int:service-activator input-channel="log-channel" ref="loggerEndpointService" method="logMessageHistory" />
<int:payload-type-router input-channel="global-wire-tap-channel" default-output-channel="nullChannel">
<int:mapping type="java.lang.Exception" channel="global-notifier-error-channel" />
</int:payload-type-router>
堆栈跟踪如给定
java.lang.StackOverflowError
at java.lang.Class.privateGetDeclaredMethods(Class.java:2414)
at java.lang.Class.getMethod0(Class.java:2670)
at java.lang.Class.getMethod(Class.java:1603)
at org.apache.commons.logging.LogFactory.directGetContextClassLoader(LogFactory.java:825)
at org.apache.commons.logging.LogFactory$1.run(LogFactory.java:791)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.commons.logging.LogFactory.getContextClassLoader(LogFactory.java:788)
at org.apache.commons.logging.LogFactory.getFactory(LogFactory.java:383)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:645)
at org.springframework.messaging.support.MessageHeaderAccessor.<init>(MessageHeaderAccessor.java:51)
at org.springframework.integration.IntegrationMessageHeaderAccessor.<init>(IntegrationMessageHeaderAccessor.java:49)
at org.springframework.integration.support.MessageBuilder.<init>(MessageBuilder.java:59)
at org.springframework.integration.support.MessageBuilder.fromMessage(MessageBuilder.java:75)
at org.springframework.integration.support.DefaultMessageBuilderFactory.fromMessage(DefaultMessageBuilderFactory.java:29)
at org.springframework.integration.support.DefaultMessageBuilderFactory.fromMessage(DefaultMessageBuilderFactory.java:25)
at org.springframework.integration.history.MessageHistory.write(MessageHistory.java:76)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:76)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.invokeHandler(BroadcastingDispatcher.java:160)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.dispatch(BroadcastingDispatcher.java:142)
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:77)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:255)
at org.springframework.integration.channel.interceptor.WireTap.preSend(WireTap.java:128)
at org.springframework.integration.channel.AbstractMessageChannel$ChannelInterceptorList.preSend(AbstractMessageChannel.java:338)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:251)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:223)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:114)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:44)
at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:93)
at org.springframework.integration.router.AbstractMessageRouter.handleMessageInternal(AbstractMessageRouter.java:175)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:78)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.invokeHandler(BroadcastingDispatcher.java:160)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.dispatch(BroadcastingDispatcher.java:142)
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:77)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:255)
at org.springframework.integration.channel.interceptor.WireTap.preSend(WireTap.java:128)
at org.springframework.integration.channel.AbstractMessageChannel$ChannelInterceptorList.preSend(AbstractMessageChannel.java:338)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:251)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:223)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:114)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:44)
at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:93)
at org.springframework.integration.router.AbstractMessageRouter.handleMessageInternal(AbstractMessageRouter.java:175)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:78)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.invokeHandler(BroadcastingDispatcher.java:160)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.dispatch(BroadcastingDispatcher.java:142)
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:77)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:255)
at org.springframework.integration.channel.interceptor.WireTap.preSend(WireTap.java:128)
at org.springframework.integration.channel.AbstractMessageChannel$ChannelInterceptorList.preSend(AbstractMessageChannel.java:338)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:251)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:223)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:114)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:44)
at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:93)
at org.springframework.integration.router.AbstractMessageRouter.handleMessageInternal(AbstractMessageRouter.java:175)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:78)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.invokeHandler(BroadcastingDispatcher.java:160)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.dispatch(BroadcastingDispatcher.java:142)
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:77)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:255)
at org.springframework.integration.channel.interceptor.WireTap.preSend(WireTap.java:128)
at org.springframework.integration.channel.AbstractMessageChannel$ChannelInterceptorList.preSend(AbstractMessageChannel.java:338)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:251)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:223)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:114)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:44)
at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:93)
at org.springframework.integration.router.AbstractMessageRouter.handleMessageInternal(AbstractMessageRouter.java:175)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:78)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.invokeHandler(BroadcastingDispatcher.java:160)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.dispatch(BroadcastingDispatcher.java:142)
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:77)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:255)
at org.springframework.integration.channel.interceptor.WireTap.preSend(WireTap.java:128)
at org.springframework.integration.channel.AbstractMessageChannel$ChannelInterceptorList.preSend(AbstractMessageChannel.java:338)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:251)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:223)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:114)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:44)
at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:93)
at org.springframework.integration.router.AbstractMessageRouter.handleMessageInternal(AbstractMessageRouter.java:175)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:78)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.invokeHandler(BroadcastingDispatcher.java:160)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.dispatch(BroadcastingDispatcher.java:142)
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:77)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:255)
at org.springframework.integration.channel.interceptor.WireTap.preSend(WireTap.java:128)
at org.springframework.integration.channel.AbstractMessageChannel$ChannelInterceptorList.preSend(AbstractMessageChannel.java:338)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:251)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:223)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:114)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:44)
at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:93)
at org.springframework.integration.router.AbstractMessageRouter.handleMessageInternal(AbstractMessageRouter.java:175)
at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:78)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.invokeHandler(BroadcastingDispatcher.java:160)
at org.springframework.integration.dispatcher.BroadcastingDispatcher.dispatch(BroadcastingDispatcher.java:142)
显然，当我执行以下操作时，它也无法正常工作
<int:wire-tap pattern="*" channel="global-wire-tap-channel" />
<int:channel id="global-wire-tap-channel" />
<int:payload-type-router input-channel="global-wire-tap-channel" default-output-channel="nullChannel">
<int:mapping type="java.lang.Exception" channel="global-notifier-error-channel" />
</int:payload-type-router>
但是如果我直接将global-notifier-error-channel称为给定的
<int:wire-tap pattern="*" channel="global-notifier-error-channel" />
然后通知将起作用
此致 弥兰陀
答案 0 :(得分：1)
我说你正确划分逻辑以达到loosely-coupled原则。这是正确的，不同的模块（或集成流程）可以有自己的错误处理逻辑，并且使用error-channel来捕获那些下游异常是好事。
我为您的全球推文错误处理找到了一个很好的解决方案。我们无法在此处使用内置error-channel，因为任何自定义优先级都是如此。但我们可以为它们添加一个方面，对于所有这些目标错误通道，它都是<wire-tap>全局pattern。在这种情况下，所有开发人员都应该遵循所有错误通道的命名约定，以允许该全局通道拦截器为它们处理消息。
但请注意，WireTap处理preSend中的邮件。所以全局错误处理将在任何自定义逻辑之前。在这种情况下，您可能需要编写简单的WireTap扩展名才能在postSend