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   from("direct:foo").filter().spel("#{request.headers['foo'] == 'bar'}").to("direct:bar");

Loading script from external resource

Available as of Camel 2.11

You can externalize the script and have Camel load it from a resource such as "classpath:", "file:", or "http:".
This is done using the following syntax: "resource:scheme:location", eg to refer to a file on the classpath you can do:

.setHeader("myHeader").spel("resource:classpath:myspel.txt")

Dependencies

You need Spring 3.0 or higher to use Spring Expression Language. If you use Maven you could just add the following to your pom.xml:

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