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Header Expression Language

The Header Expression Language allows you to extract values of named headers.

Example usage

The recipientList element of the Spring DSL can utilize a header expression like:


In this case, the list of recipients are contained in the header 'myHeader'.

And the same example in Java DSL:


And with a slightly different syntax where you use the builder to the fullest (i.e. avoid using parameters but using stacked operations, notice that header is not a parameter but a stacked method call)

java from("direct:a").recipientList().header("myHeader");


The Header language is part of camel-core.

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