Jersey Rest：找不到针对媒体类型= application / octet-stream

Question

我正在尝试编写以下REST服务。我尝试序列化对象列表并将其发送给客户端。不幸的是，我收到以下错误：

  

找不到针对媒体类型=应用程序/八位字节流的MessageBodyWriter，类型= org.glassfish.jersey.message.internal.OutboundJaxrsResponse类，genericType = org.glassfish.jersey.message.internal.OutboundJaxrsResponse类。

这是我的休息服务。有人可以告诉我我在做什么错

    @GET
    @Path ( "/ news")
    @Produces (MediaType.APPLICATION_OCTET_STREAM)
    Response news () {

    List <newsModel> news = dao.getAll ();
    ByteArrayOutputStream baos = new ByteArrayOutputStream ();
    StreamingOutput stream = null;
    try {
              ObjectOutputStream oos = new ObjectOutputStream (baos);
              oos.writeObject (news);
              oos.flush ();
              oos.close ();
              InputStream is = new ByteArrayInputStream (baos.toByteArray ());

    stream = new StreamingOutput () {
        @Override
        public void write (OutputStream os) throws IOException, WebApplicationException {
        int read = 0;
                        byte [] bytes = new byte [1024];

                        while ((read = is.read (bytes))! = -1) {
                        os.write (bytes, 0, read);
                        }
        }
    };
    } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace ();
    }
    return Response.ok (stream) .build ();