Serve Gzipped content with Java Servlets

Question

I was wondering if there was an easy way to serve GZipped content with Java Servlets. I already have the app up and running so the modifications needed should be to

Answer 1

Just wanted to let you know what I ended doing.

I made a wrapper of the request class that looks like this:

public class GzippedResponse extends HttpServletResponseWrapper{

  private PrintWriter pw;

  private GzippedResponse(HttpServletResponse response){
    super(response);
    try{
      pw = new PrintWriter(new GZIPOutputStream(response.getOutputStream()));
    }catch(Exception e){
      throw new ApiInternalException("Failed to create a Gzipped Response", e);
    }
  }

  public static GzippedResponse wrap(HttpServletResponse response){
    return new GzippedResponse(response);
  }

  @Override
  public PrintWriter getWriter() throws IOException {
    return pw;
  }  
}

And then on my BaseAction, which is basically a TemplateMethod for other "Actions" I wrap the response like this:

if(supportsCompression(request)){
  response.setHeader("Content-Encoding", "gzip");
  response = GzippedResponse.wrap(response);
}
action.macroExecute(request,response);

I think its clean enough. If you find something that can be improved, please let me know. Thanks everybody for the answers!