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:
Wiki Markup |
---|
{snippet:id=e1|lang=xml|url=camel/trunk/components/camel-spring/src/test/resources/org/apache/camel/spring/processor/recipientListWithStringDelimitedHeader.xml} |
In this case, the list of recipients are contained in the header 'myHeader'.
And the same example in Java DSL:
Wiki Markup |
---|
{snippet:id=example|lang=java|url=camel/trunk/camel-core/src/test/java/org/apache/camel/processor/RecipientListWithStringDelimitedHeaderTest.java} |
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)
Code Block | ||||
---|---|---|---|---|
| ||||
from("direct:a").recipientList().header("myHeader"); |
Dependencies
The Header language is part of camel-core.