RestfulServices Consuming and producing xml using XStream

Will be helpful the people who wants to learn restful services.

import java.util.List;

import javax.ws.rs.DefaultValue;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;

import org.apache.log4j.Logger;

import com.homedepot.ta.aa.log4j.SimpleExceptionLogger;
import com.tcs.ResponseTO.GetTradeOptionsResponse;
import com.tcs.ResponseTO.RegisterResponse;
import com.tcs.ResponseTO.TradeOptionsTO;
import com.tcs.managers.RegisterManager;
import com.tcs.managers.SampleManager;
import com.tcs.services.formatters.ExceptionXMLFormatter;
import com.tcs.util.XMLGenerator;

@Path("/ResponseService")
public class ConvertResponseToXML {

 // Logger instance
 private static final Logger logger = Logger
   .getLogger(ConvertResponseToXML.class);

 /**
  * 
  * @param version
  * @return
  * URL to hit this service: http://localhost:8081/XStreamExamples/rs/ResponseService/sampleResponse
  */
 @POST
 @Produces("application/xml")
 @Path("/sampleResponse")
 public String myMethod(@DefaultValue("1") @QueryParam("version") int version) {
  if (logger.isDebugEnabled()) {
   logger.debug("Start myMethod");
   logger.debug("version: '" + version + "'");
  }

  String result = null;
  GetTradeOptionsResponse getTradeOptionsResponse = new GetTradeOptionsResponse();
  SampleManager manager = null;
  List tradeOptionList = null;

  try {
   switch (version) {
   case 1:
    if (logger.isDebugEnabled()) {
     logger.debug("in version 1");
    }
    manager = new SampleManager();
    tradeOptionList = manager.getTradeOptions();
    getTradeOptionsResponse.setTradeOptionsTO(tradeOptionList);
    result = XMLGenerator.generateXML(getTradeOptionsResponse);
    break;
   default:
    throw new Exception("Unsupported version: " + version);
   }
  } catch (Exception e) {
   SimpleExceptionLogger.log(e, "XStreamExamples");
   result = ExceptionXMLFormatter.formatMessage(e);
  }

  if (logger.isDebugEnabled()) {
   logger.debug("result: '" + result + "'");
   logger.debug("End myMethod");
  }
  return result;
 }

 
 /**
  * 
  * @param version
  * @return
  *  URL to hit this service: http://localhost:8081/XStreamExamples/rs/ResponseService/sampleResponse
  */

 @POST
 @Produces("application/xml")
 @Path("/sampleResponse")
 public String response(@DefaultValue("1") @QueryParam("version") int version) {
  if (logger.isDebugEnabled()) {
   logger.debug("Start myMethod");
   logger.debug("version: '" + version + "'");
  }

  String result = null;
  RegisterResponse registerResponse;
  RegisterManager manager =  new RegisterManager();

  try {
   switch (version) {
   case 1:
    if (logger.isDebugEnabled()) {
     logger.debug("in version 1");
    }
    registerResponse = manager.getCustomerDetails();
    result = XMLGenerator.generateXML(registerResponse);
    break;
   default:
    throw new Exception("Unsupported version: " + version);
   }
  } catch (Exception e) {
   SimpleExceptionLogger.log(e, "XStreamExamples");
   result = ExceptionXMLFormatter.formatMessage(e);
  }

  if (logger.isDebugEnabled()) {
   logger.debug("result: '" + result + "'");
   logger.debug("End myMethod");
  }
  return result;
 }

}