在 RabbitMQ 监听器中隐藏运行时异常

Question

在某些情况下，我使用了一些异常来拒绝消息，但在某些情况下是故意发生的，但在控制台中显示的异常乍一看似乎不太好。

如何在控制台/文件上隐藏该特定异常

我正在使用 spring-boot 和默认记录器！

public static class UndispatchException extends 
       AmqpRejectAndDontRequeueException{

    public UndispatchException() {
        super("Dispatch still looking for a driver");
    }

}

这里是监听器

@RabbitListener(queues = TEST_QUEUE)
public void handle(Dispatch in) {
    if(in.isRequeue()){
        log.debug("will reject the message");
        throw new UndispatchException();
    }
    log.debug("won't reject the message");

}

这是我要隐藏的日志！在某些情况下，必须将消息重新排队！

2018-05-15 18:41:11.494  WARN 2709 --- [cTaskExecutor-1] s.a.r.l.ConditionalRejectingErrorHandler : Execution of Rabbit message listener failed.

org.springframework.amqp.rabbit.listener.exception.ListenerExecutionFailedException: Listener method 'public void com.amqp.handleException.demo.DemoApplication.handle(com.amqp.handleException.demo.DemoApplication$Dispatch)' threw exception
    at org.springframework.amqp.rabbit.listener.adapter.MessagingMessageListenerAdapter.invokeHandler(MessagingMessageListenerAdapter.java:140) ~[spring-rabbit-1.7.7.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.listener.adapter.MessagingMessageListenerAdapter.onMessage(MessagingMessageListenerAdapter.java:106) ~[spring-rabbit-1.7.7.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:856) ~[spring-rabbit-1.7.7.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:779) ~[spring-rabbit-1.7.7.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.access$001(SimpleMessageListenerContainer.java:105) [spring-rabbit-1.7.7.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$1.invokeListener(SimpleMessageListenerContainer.java:208) ~[spring-rabbit-1.7.7.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.invokeListener(SimpleMessageListenerContainer.java:1349) [spring-rabbit-1.7.7.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.executeListener(AbstractMessageListenerContainer.java:760) ~[spring-rabbit-1.7.7.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.doReceiveAndExecute(SimpleMessageListenerContainer.java:1292) [spring-rabbit-1.7.7.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.receiveAndExecute(SimpleMessageListenerContainer.java:1262) [spring-rabbit-1.7.7.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.access$1800(SimpleMessageListenerContainer.java:105) [spring-rabbit-1.7.7.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.run(SimpleMessageListenerContainer.java:1518) [spring-rabbit-1.7.7.RELEASE.jar:na]
    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_111]
Caused by: com.amqp.handleException.demo.DemoApplication$UndispatchException: Dispatch still looking for a driver
    at com.amqp.handleException.demo.DemoApplication.handle(DemoApplication.java:47) ~[classes/:na]
    at sun.reflect.GeneratedMethodAccessor38.invoke(Unknown Source) ~[na:na]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_111]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_111]
    at org.springframework.messaging.handler.invocation.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:180) ~[spring-messaging-4.3.15.RELEASE.jar:4.3.15.RELEASE]
    at org.springframework.messaging.handler.invocation.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:112) ~[spring-messaging-4.3.15.RELEASE.jar:4.3.15.RELEASE]
    at org.springframework.amqp.rabbit.listener.adapter.HandlerAdapter.invoke(HandlerAdapter.java:49) ~[spring-rabbit-1.7.7.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.listener.adapter.MessagingMessageListenerAdapter.invokeHandler(MessagingMessageListenerAdapter.java:126) ~[spring-rabbit-1.7.7.RELEASE.jar:na]
    ... 12 common frames omitted

Answer 1

在您的日志记录配置中，为

设置日志级别

org.springframework.amqp.rabbit.listener.ConditionalRejectingErrorHandler

到 ERROR（该消息记录在 WARN 级别）。

使用 Spring Boot，您可以简单地添加...

logging.level.org.springframework.amqp.rabbit.listener.ConditionalRejectingErrorHandler=ERROR

...到您的 application.properties（或 .yml）文件。

编辑

如果您希望做一些不同的事情（例如记录某些异常），您可以复制ConditionalRejectingErrorHandler 并在handleError() 方法中进行更改。 code is here。

然后，您将使用自定义错误处理程序配置侦听器容器（或侦听器容器工厂）。