25.12. 配置要调用的 URI

from("direct:start")
        .to("http://oldhost");

from("direct:start")
        .to("http://oldhost");

<camelContext xmlns="http://activemq.apache.org/camel/schema/spring">
  <route>
    <from uri="direct:start"/>
    <to uri="http://oldhost"/>
  </route>
</camelContext>

<camelContext xmlns="http://activemq.apache.org/camel/schema/spring">
  <route>
    <from uri="direct:start"/>
    <to uri="http://oldhost"/>
  </route>
</camelContext>

from("direct:start")
  .setHeader(Exchange.HTTP_URI, constant("http://newhost"))
  .to("http://oldhost");

from("direct:start")
  .setHeader(Exchange.HTTP_URI, constant("http://newhost"))
  .to("http://oldhost");