Examples of javax.ws.rs.ext.ExceptionMapper

javax.ws.rs.ext.ExceptionMapper
Contract for a provider that maps Java exceptions to {@link javax.ws.rs.core.Response}. An implementation of this interface must be annotated with {@link Provider}. @see Provider @see javax.ws.rs.core.Response

                        if (waeResponse.hasEntity()) {
                            return waeResponse;
                        }
                    }


                    ExceptionMapper mapper = exceptionMappers.findMapping(throwable);
                    if (mapper != null) {
                        try {
                            final Response mappedResponse = mapper.toResponse(throwable);
                            if (mappedResponse != null) {
                                // response successfully mapped
                                return mappedResponse;
                            } else {
                                return Response.noContent().build();
                            }
                        } catch (Throwable mapperThrowable) {
                            // spec: If the exception mapping provider throws an exception while creating a Response
                            // then return a server error (status code 500) response to the client.
                            LOGGER.log(Level.SEVERE, LocalizationMessages.EXCEPTION_MAPPER_THROWS_EXCEPTION(mapper.getClass()),
                                    mapperThrowable);
                            LOGGER.log(Level.SEVERE, LocalizationMessages.EXCEPTION_MAPPER_FAILED_FOR_EXCEPTION(), throwable);
                            return Response.serverError().build();
                        }
                    }

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    }
    
    @SuppressWarnings("unchecked")
    public static Response convertFaultToResponse(Throwable ex, Message inMessage) {
        
        ExceptionMapper mapper = 
            ProviderFactory.getInstance(inMessage).createExceptionMapper(ex.getClass(), inMessage);
        if (mapper != null) {
            try {
                return mapper.toResponse(ex);
            } catch (Exception mapperEx) {
                mapperEx.printStackTrace();
                return Response.serverError().build();
            }
        }

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    }
    
    @SuppressWarnings("unchecked")
    public static Response convertFaultToResponse(Throwable ex, Message inMessage) {
        
        ExceptionMapper mapper = 
            ProviderFactory.getInstance(inMessage).createExceptionMapper(ex.getClass(), inMessage);
        if (mapper != null) {
            try {
                return mapper.toResponse(ex);
            } catch (Exception mapperEx) {
                mapperEx.printStackTrace();
                return Response.serverError().build();
            }
        }

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    }
    
    @SuppressWarnings("unchecked")
    public static Response convertFaultToResponse(Throwable ex, Message inMessage) {
        
        ExceptionMapper mapper = 
            ProviderFactory.getInstance(inMessage).createExceptionMapper(ex.getClass(), inMessage);
        if (mapper != null) {
            try {
                return mapper.toResponse(ex);
            } catch (Exception mapperEx) {
                mapperEx.printStackTrace();
                return Response.serverError().build();
            }
        }

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         {
            if (e instanceof WebApplicationException)
            {


               Response errorResponse = ((WebApplicationException)e).getResponse();
               ExceptionMapper excmap = ProviderBinder.getInstance().getExceptionMapper(WebApplicationException.class);


               // should be some of 4xx status
               if (errorResponse.getStatus() < 500)
               {
                  if (LOG.isDebugEnabled() && e.getCause() != null)
                  {
                     LOG.warn("WebApplication exception occurs.", e.getCause());
                  }
                  if (errorResponse.getEntity() == null)
                  {
                     if (excmap != null)
                     {
                        errorResponse = excmap.toResponse(e);
                     }
                  }
                  
                  if (e.getMessage() != null)
                     errorResponse =
                        Response.status(errorResponse.getStatus()).entity(new String(e.getMessage())).type(
                           MediaType.TEXT_PLAIN).header("JAXRS-Message-Provided", "true").build();
                  
                  response.setResponse(errorResponse);
               }
               else
               {


                  if (errorResponse.getEntity() == null)
                  {
                     if (excmap != null)
                     {
                        if (LOG.isDebugEnabled() && e.getCause() != null)
                        {
                           // Hide error message if exception mapper exists.
                           LOG.warn("WebApplication exception occurs.", e.getCause());
                        }


                        errorResponse = excmap.toResponse(e);
                     }
                     else
                     {
                        if (e.getCause() != null)
                        {
                           LOG.warn("WebApplication exception occurs.", e.getCause());
                        }


                        // print stack trace & adding ex message into body
                        if (LOG.isDebugEnabled())
                        {
                           e.printStackTrace();
                        }
                        if (e.getMessage() != null)
                           errorResponse =
                              Response.status(errorResponse.getStatus()).entity(new String(e.getMessage())).type(
                                 MediaType.TEXT_PLAIN).header("JAXRS-Message-Provided", "true").build();
                        else
                           errorResponse =  Response.status(errorResponse.getStatus()).header("JAXRS-Message-Provided", "false").build();
                     }
                  }
                  response.setResponse(errorResponse);
               }
            }
            else if (e instanceof InternalException)
            {
               Throwable cause = e.getCause();
               Class causeClazz = cause.getClass();
               ExceptionMapper excmap = ProviderBinder.getInstance().getExceptionMapper(causeClazz);
               while (causeClazz != null && excmap == null)
               {
                  excmap = ProviderBinder.getInstance().getExceptionMapper(causeClazz);
                  if (excmap == null)
                     causeClazz = causeClazz.getSuperclass();
               }
               if (excmap != null)
               {
                  if (LOG.isDebugEnabled())
                  {
                     // Hide error message if exception mapper exists.
                     LOG.warn("Internal error occurs.", cause);
                  }
                  response.setResponse(excmap.toResponse(e.getCause()));
               }
               else
               {
                  LOG.error("Internal error occurs.", cause);
                  throw new UnhandledException(e.getCause());

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    }
    
    @SuppressWarnings("unchecked")
    public static Response convertFaultToResponse(Throwable ex, Message inMessage) {
        
        ExceptionMapper mapper = 
            ProviderFactory.getInstance(inMessage).createExceptionMapper(ex.getClass(), inMessage);
        if (mapper != null) {
            try {
                return mapper.toResponse(ex);
            } catch (Exception mapperEx) {
                mapperEx.printStackTrace();
                return Response.serverError().build();
            }
        }

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