Is it possible to control the filename for a Response from a Jersey Rest service?

Question

Currently I have a method in Jersey that retrieves a file from a content repository and returns it as a Response. The file can be a jpeg, gif, pdf, docx, html, etc. (basically anything). Currently, however, I cannot figure out how I can control the filename since each file downloads automatically with the name (download.[file extension] i.e. (download.jpg, download.docx, download.pdf). Is there a way that I can set the filename? I already have it in a String, but I don't know how to set the response so that it shows that filename instead of defaulting to "download".

@GET
@Path("/download/{id}")
public Response downloadContent(@PathParam("id") String id)
{
    String serverUrl = "http://localhost:8080/alfresco/service/cmis";
    String username = "admin";
    String password = "admin";

    Session session = getSession(serverUrl, username, password);

    Document doc = (Document)session.getObject(session.createObjectId(id));

    String filename = doc.getName();

    ResponseBuilder rb = new ResponseBuilderImpl();

    rb.type(doc.getContentStreamMimeType());
    rb.entity(doc.getContentStream().getStream());

    return rb.build();
}

Answer 1

An even better way, which is more typesafe, using the Jersey provided ContentDisposition class:

ContentDisposition contentDisposition = ContentDisposition.type("attachment")
    .fileName("filename.csv").creationDate(new Date()).build();

 return Response.ok(
            new StreamingOutput() {
                @Override
                public void write(OutputStream outputStream) throws IOException, WebApplicationException {
                    outputStream.write(stringWriter.toString().getBytes(Charset.forName("UTF-8")));
                }
            }).header("Content-Disposition",contentDisposition).build();