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From "abdelgadiri (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CXF-5201) jaxrs2: unable to intercept response to add new response headers
Date Wed, 14 Aug 2013 15:37:47 GMT

    [ https://issues.apache.org/jira/browse/CXF-5201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13739777#comment-13739777
] 

abdelgadiri commented on CXF-5201:
----------------------------------

As an additional check, I created the following Servlet filter to introspect the response
headers which confirmed to me that the response header set from the JAX-RS interceptor is
not being returned to the client.

@WebFilter(filterName = "ResponseDebugFilter", urlPatterns = {"/*"})
public class ResponseDebugFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        //do nothing
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain
filterChain)
            throws IOException, ServletException {

        //carry on as normal
        filterChain.doFilter(servletRequest, servletResponse);

        //print response headers on way out
        if (servletResponse instanceof HttpServletResponse) {
            Collection<String> headerNames = ((HttpServletResponse) servletResponse).getHeaderNames();
            for (String hn : headerNames) {
                Collection<String> headers = ((HttpServletResponse) servletResponse).getHeaders(hn);
                System.out.println("^^^^^^^^^^^^^^^^^^^^^^^^^^^^ found response header ("
+ hn + "): " + headers);
            }
        }
    }

    @Override
    public void destroy() {
        //do nothing
    }
}
                
> jaxrs2: unable to intercept response to add new response headers
> ----------------------------------------------------------------
>
>                 Key: CXF-5201
>                 URL: https://issues.apache.org/jira/browse/CXF-5201
>             Project: CXF
>          Issue Type: Bug
>          Components: JAX-RS
>    Affects Versions: 2.7.5, 2.7.6
>         Environment: windows
>            Reporter: abdelgadiri
>
> In a WriterInterceptor, one expects to be able to modify response headers via:
> //here using putSingle() but could also use on of the addXXX variants
> context.getHeaders().putSingle("headerName", headerValue);
> However, above is not working in 2.7.5/2.7.6 (@see JIRA-4986)
> As a workaround, one should be able to inject the HttpServletResponse object via: @Context
HttpServletResponse response;
> then be able to add headers directly to the response object e.g.,
> response.setHeader("headerName", headerValue);
> however, above is also not working in (2.7.5/2.7.6). This is not always reproducable
as sometimes my client does see the new headers in the received response. On closer look it
seems the added headers get lost when it is a @GET request as opposed to e.g., a @POST. Basically,
my test case (a @GET) always fails with a missing header in the received response even though
I am pretty sure the server had added the header. 

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