akka-http: json entity response with headers

[ash.ta]

hi hakkers,

i asked this as a part of a discussion in other thread but got no answer, so i'm trying my luck here. 

i use akka-http with java api. i need to return a json entity in httpresponse with response headers. i was advised to do something like this:

return ctx.complete(
  HttpResponse.create()
    .withEntity(HttpEntities.create("example"))
    .addHeader(Location.create("http://akka.io")));

my problem is that i don't know how to send a json entity. the docs show a way to use marshallers which doesn't involve httpresponse object, which unfortunately doesn't answer my needs:

ctx.completeAs(Jackson.json(), object)

i tried a workaround 

response.withEntity( json_string ).addHeader( new RawHeader( "Content-Type", "application/json" ) )

but this doesn't work - the response arrives with content-type text/plain and i see following warn in logs: Explicitly set HTTP header 'Content-Type: application/json' is ignored, illegal RawHeader.

any ideas?

thanks!

[ash.ta]

ok, i found a solution 

response.withEntity( MediaTypes.APPLICATION_JSON.toContentType(), data)

does the job