title: Spring Integration: no output-channel or replychannel header available
body: <p>I wrote a simple spring integration application that moves files from one directory to another, it looks like this:</p>
  
  <pre><code>@Bean
  @InboundChannelAdapter(value="requestChannel", poller = @Poller(fixedDelay="100"))
  public FileReadingMessageSource adapter(){
      FileReadingMessageSource source = new FileReadingMessageSource();
      source.setDirectory(new File("D:/TestIn"));
      return source;
  
  }
  
  @Bean 
  MessageChannel requestChannel(){
      return new DirectChannel();
  }
  
  @Bean
  @ServiceActivator(inputChannel="requestChannel")
  public FileWritingMessageHandler handle(){
      FileWritingMessageHandler handler = new FileWritingMessageHandler(new File("D:/TestOut"));
      handler.setDeleteSourceFiles(true);
      return handler;
  }
  </code></pre>
  
  <p>It works perfectly well, but every copy operation gives me this exception </p>
  
  <pre><code>    2015-03-26 09:56:39.222  INFO 4772 --- [ask-scheduler-5] o.s.i.file.FileReadingMessageSource      : Created message: [GenericMessage [payload=D:\TestIn\9.txt, headers={id=d8b27257-0a90-b7ad-65cb-85e93668fb5a, timestamp=1427360199222}]]
  2015-03-26 09:56:39.223 ERROR 4772 --- [ask-scheduler-5] o.s.integration.handler.LoggingHandler   : org.springframework.messaging.MessagingException: ; nested exception is org.springframework.messaging.core.DestinationResolutionException: no output-channel or replyChannel header available
      at org.springframework.integration.dispatcher.AbstractDispatcher.wrapExceptionIfNecessary(AbstractDispatcher.java:133)
  </code></pre>
  
  <p>I read in another topic that this happens when you filter out the headers somewhere in your code, but the first line of this trace tells me, that the only headers generated are id and timestamp.</p>