Custom response header Jersey/Java

Question

I am trying to achieve the following.

Read a custom header and its value from Request:

name: username 

Now, on response, I would like to return the same header name:value pair in HTTP response.

I am using Jersey 2.0 implementation of JAX-RS webservice.

When I send the request URL Http://localhost/test/, the request headers are also passed (for the time being, though Firefox plugin - hardcoding them).

On receiving the request for that URL, the following method is invoked:

@GET @Produces(MediaType.APPLICATION_JSON) public UserClass getValues(@Context HttpHeaders header) {     MultivaluedMap<String, String> headerParams = header.getRequestHeaders();     String userKey = "name";     headerParams.get(userKey);      // ...      return user_object; } 

How may I achieve this? Any pointers would be great!

Answer 1

I think using javax.ws.rs.core.Response is more elegant and it is a part of Jersey. Just to extend previous answer, here is a simple example:

    @GET     @Produces({ MediaType.APPLICATION_JSON })     @Path("/values")     public Response getValues(String body) {          //Prepare your entity          Response response = Response.status(200).                 entity(yourEntity).                 header("yourHeaderName", "yourHeaderValue").build();          return response;     } 

Answer 2

Just inject a @Context HttpServletResponse response as a method argument. Change the headers on that

@Produces(MediaType.APPLICATION_JSON) public UserClass getValues(@Context HttpHeaders header, @Context HttpServletResponse response) {     response.setHeader("yourheadername", "yourheadervalue");     ... }