Camel idiom to route dynamically based on the value in the body of the message

Suppose you have a route like:

from("direct:start").to("http://some.endpoint/accounts/");

where message passed through direct:start is an XML:

<payload>
    <account id="1">Bob</account>
</paylo开发者_运维问答ad>

What's the idiomatic way to extract the account's id and append it to the to endpoint in order to send this message to http://some.endpoint/accounts/1?

you can use the recipient list pattern to create dynamic endpoints based on Exchange data.

from("direct:start")
.recipientList(constant("http://some.endpoint/accounts/")
              .append(XPathBuilder.xpath("/payload/account/@id", String.class)));

See this FAQ about dynamic to http://camel.apache.org/how-do-i-use-dynamic-uri-in-to.html