Camel - Passing specific parameters from routes to a generic bean method

Question

Let's say I have a Camel route that looks like this :

from("direct:myRoute")
        .setHeader("someHeader", simple("some header value"))
        .beanRef("myBean", "beanMethod");

And I have a bean that I cannot change that looks like this :

public class MyBean {
    public void beanMethod(String headerExpected) {
        // do something with the value here.
    }
}

Basically, I want to pass the value of someHeader from myRoute to beanMethod within MyBean.

Knowing that beanMethod can accept a String, how can I pass the value of the header someHeader from the route so that it is accepted as a String within beanMethod?

Answer 1

The answers seem to be a bit outdated. Here is how I do, the modern Camel way. You can retrieve the header value within a bean with the @Headers annotation, and you can call the bean method with passing the class and the method name;

Route Class

public class MyRoute extends RouteBuilder {

    @Override
    public void configure() throws Exception {
        from("direct:myRoute")
            .setHeader("myHeader", simple("my header value"))
            .bean(MyBean.class, "handle");
    }

}

Bean Class

public class MyBean {
    
    public static void handle(@Header("myHeader") String headerVal) {
        // do something with header
        System.out.println("myHeader: " + headerVal);
    }

}