apache-camel: http query string parameter as headers?

Question

I'm new to camel and prefer using Spring DSL for route definition. Now I find it's confusing, that http query string parameter are named and handled as headers, what they aren't. Is this an architectural bug in camel?

Solution 1

Incoming http requests will be added as headers on the exchange with the same name as the query parameter.

Below example is from camel documentation

For example, given a client request with the URL, http://myserver/myserver?orderid=123, the exchange will contain a header named orderid with the value 123.

You can set the query parameters for other HTTP calls you make by setting by CamelHttpQuery header. Exchange.HTTP_QUERY is the static constant for string CamelHttpQuery

Eg:

from("jetty://0.0.0.0:8080/test")
    .setHeader(Exchange.HTTP_QUERY, simple("?param1=${header.param1}")
    .to("http://external-url/test")

Solution 2

You can use toD. For example:

from("direct:mycode")
  .toD("https://myurl?param1=${header.param1}");

Comments

[Jundl]

don't find it very elegant and it doesn't actually answers my question, but I'm glad that anybody answers and it works:)

[Erik Pearson]

For me, I had to use: simple("param1=${header.param1}", without the question mark.