駱駝動態路由器修改消息不起作用

Question

Spring配置：

<camelContext xmlns="http://camel.apache.org/schema/spring"> 
    <route> 
     <from uri="kafka:127.0.0.1:9092?topic=test1&amp;zookeeperHost=127.0.0.1&amp;zookeeperPort=2181&amp;groupId=group1&amp;serializerClass=kafka.serializer.StringEncoder"/> 
     <dynamicRouter> 
      <!-- use a method call on a bean as dynamic router --> 
      <method ref="compositorSlip" method="slip"/> 
     </dynamicRouter> 
    </route> 
</camelContext> 
<bean id="compositorSlip" class="com.maxent.routingcenter.DynamicRouterTest" /> 

滑方法：

public String slip(Exchange exchange, @Header(Exchange.SLIP_ENDPOINT) String previous) { 
    // just route one time, return null means to end. 
    if(previous != null){ 
     return null; 
    } 
    // I've tried two ways to modify the message body, but they both didn't work. 
    exchange.getOut().setBody("message modified!!!!!", String.class); 
    exchange.getIn().setBody("message modified!!!!!", String.class); 
    if (i++ % 2 == 0) { 
     return "file://test"; 
    } 
    return null; 
} 

我已經試過兩種方式來修改郵件正文，但他們都沒有工作。我如何修改郵件正文？使用處理器？

Answer 1

您不能修改動態路由器（slip）中的消息。您需要使用消息轉換EIP，例如調用bean /處理器等。