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i have made one web service now i want to encrypt that json data using s/mime rest easy encryption at server side

@Path("/All")

           @GET

            @Produces("application/json")

            @GZIP

            public EnvelopedOutput getAllOpenMeetings(@QueryParam("batchsize")

            int batchSize, @QueryParam("offset")

            int offset, @Context

            HttpServletRequest req) {

              String ipAddress = req.getRemoteAddr();

              EnvelopedOutput output=null;

              CustomerBean bean=null;

              try {

                 bean=new CustomerBean();

                bean.setDesc("abc");

                bean.setName("xyz");

                X509V3Generator generator=new X509V3Generator();

                X509Certificate certificate=generator.get();

                 output = new EnvelopedOutput(bean, MediaType.APPLICATION_XML_TYPE);

                output.setCertificate(certificate);

              }  catch (Exception ex) {

                String result = "Error 500 - Internal Server Error";

System.out.println("exception=="+ex.getMessage());

//                throw new WebApplicationException(Response.status(500).entity(result).build());

              }

              return output;

            }

but give eception:org.codehaus.jackson.map.JsonMappingException: Direct self-reference leading to cycle

but when i change  @Produces("application/json")=@Produces("text/plain") then its not  return the encrypted form its return simply object of EnvelopedOutput.

please help me

thank you