private void onException(Throwable e, Response r, boolean mapped) { if (request.isTracingEnabled()) { Response.Status s = Response.Status.fromStatusCode(r.getStatus()); if (s != null) { request.trace( String.format( "mapped exception to response: %s -> %d (%s)", ReflectionHelper.objectToString(e), r.getStatus(), s.getReasonPhrase())); } else { request.trace( String.format( "mapped exception to response: %s -> %d", ReflectionHelper.objectToString(e), r.getStatus())); } } if (!mapped && r.getStatus() >= 500) { logException(e, r, Level.SEVERE); } else if (LOGGER.isLoggable(Level.FINE)) { logException(e, r, Level.FINE); } setResponse(r); this.mappedThrowable = e; if (getEntity() != null && getHttpHeaders().getFirst(HttpHeaders.CONTENT_TYPE) == null) { Object m = request.getProperties().get(HttpMethodRule.CONTENT_TYPE_PROPERTY); if (m != null) { request.getProperties().remove(HttpMethodRule.CONTENT_TYPE_PROPERTY); getHttpHeaders().putSingle(HttpHeaders.CONTENT_TYPE, m); } } }
/** * Map an exception to a response. * * @param e the exception. * @return true if the exception was mapped, otherwise false. */ public boolean mapException(Throwable e) { ExceptionMapper em = wa.getExceptionMapperContext().find(e.getClass()); if (em == null) { wa.getResponseListener().onError(Thread.currentThread().getId(), e); return false; } wa.getResponseListener().onMappedException(Thread.currentThread().getId(), e, em); if (request.isTracingEnabled()) { request.trace( String.format( "matched exception mapper: %s -> %s", ReflectionHelper.objectToString(e), ReflectionHelper.objectToString(em))); } try { Response r = em.toResponse(e); if (r == null) r = Response.noContent().build(); onException(e, r, true); } catch (MappableContainerException ex) { // If the exception mapper throws a MappableContainerException then // rethrow it to the HTTP container throw ex; } catch (RuntimeException ex) { LOGGER.severe( "Exception mapper " + em + " for Throwable " + e + " threw a RuntimeException when " + "attempting to obtain the response"); Response r = Response.serverError().build(); onException(ex, r, false); } return true; }
/** * Write the response. * * <p>The status and headers will be written by calling the method {@link * ContainerResponseWriter#writeStatusAndHeaders} on the provided {@link ContainerResponseWriter} * instance. The {@link OutputStream} returned from that method call is used to write the entity * (if any) to that {@link OutputStream}. An appropriate {@link MessageBodyWriter} will be found * to write the entity. * * @throws WebApplicationException if {@link MessageBodyWriter} cannot be found for the entity * with a 500 (Internal Server error) response. * @throws java.io.IOException if there is an error writing the entity */ public void write() throws IOException { if (isCommitted) return; if (request.isTracingEnabled()) { configureTrace(responseWriter); } if (entity == null) { isCommitted = true; responseWriter.writeStatusAndHeaders(-1, this); responseWriter.finish(); return; } if (!getHttpHeaders().containsKey(HttpHeaders.VARY)) { final String varyHeader = (String) request.getProperties().get(ContainerRequest.VARY_HEADER); if (varyHeader != null) { getHttpHeaders().add(HttpHeaders.VARY, varyHeader); } } MediaType contentType = getMediaType(); if (contentType == null) { contentType = getMessageBodyWorkers() .getMessageBodyWriterMediaType( entity.getClass(), entityType, annotations, request.getAcceptableMediaTypes()); if (contentType == null || contentType.isWildcardType() || contentType.isWildcardSubtype()) contentType = MediaType.APPLICATION_OCTET_STREAM_TYPE; getHttpHeaders().putSingle(HttpHeaders.CONTENT_TYPE, contentType); } final MessageBodyWriter p = getMessageBodyWorkers() .getMessageBodyWriter(entity.getClass(), entityType, annotations, contentType); if (p == null) { String message = "A message body writer for Java class " + entity.getClass().getName() + ", and Java type " + entityType + ", and MIME media type " + contentType + " was not found"; LOGGER.severe(message); Map<MediaType, List<MessageBodyWriter>> m = getMessageBodyWorkers().getWriters(contentType); LOGGER.severe( "The registered message body writers compatible with the MIME media type are:\n" + getMessageBodyWorkers().writersToString(m)); if (request.getMethod().equals("HEAD")) { isCommitted = true; responseWriter.writeStatusAndHeaders(-1, this); responseWriter.finish(); return; } else { throw new WebApplicationException(new MessageException(message), 500); } } final long size = p.getSize(entity, entity.getClass(), entityType, annotations, contentType); if (request.getMethod().equals("HEAD")) { if (size != -1) getHttpHeaders().putSingle(HttpHeaders.CONTENT_LENGTH, Long.toString(size)); isCommitted = true; responseWriter.writeStatusAndHeaders(0, this); } else { if (request.isTracingEnabled()) { request.trace( String.format( "matched message body writer: %s, \"%s\" -> %s", ReflectionHelper.objectToString(entity), contentType, ReflectionHelper.objectToString(p))); } if (out == null) out = new CommittingOutputStream(size); p.writeTo( entity, entity.getClass(), entityType, annotations, contentType, getHttpHeaders(), out); if (!isCommitted) { isCommitted = true; responseWriter.writeStatusAndHeaders(-1, this); } } responseWriter.finish(); }