Examples with MessageBodyWriter javax.ws.rs.ext.MessageBodyWriter used on opensource projects

Example 16 with MessageBodyWriter

use of javax.ws.rs.ext.MessageBodyWriter in project minijax by minijax.

the class WriterTest method testWriteWidget.

@Test
@SuppressWarnings("unchecked")
public void testWriteWidget() throws IOException {
    final Widget widget = new Widget();
    widget.id = "456";
    widget.value = "foobar";
    final ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    final MessageBodyWriter<Widget> widgetWriter = (MessageBodyWriter<Widget>) writer;
    widgetWriter.writeTo(widget, Widget.class, null, null, MediaType.APPLICATION_JSON_TYPE, null, outputStream);
    assertEquals("{\"id\":\"456\",\"value\":\"foobar\"}", outputStream.toString());
}

Example 17 with MessageBodyWriter

use of javax.ws.rs.ext.MessageBodyWriter in project minijax by minijax.

the class MinijaxApplication method write.

@SuppressWarnings({ "rawtypes", "unchecked" })
public void write(final MinijaxRequestContext context, final Response response, final HttpServletResponse servletResponse) throws IOException {
    servletResponse.setStatus(response.getStatus());
    for (final Entry<String, List<Object>> entry : response.getHeaders().entrySet()) {
        final String name = entry.getKey();
        for (final Object value : entry.getValue()) {
            servletResponse.addHeader(name, value.toString());
        }
    }
    if (context.getMethod().equals("OPTIONS")) {
        return;
    }
    final MediaType mediaType = response.getMediaType();
    if (mediaType != null) {
        servletResponse.setContentType(mediaType.toString());
    }
    final Object obj = response.getEntity();
    if (obj == null) {
        return;
    }
    final MessageBodyWriter writer = providers.getMessageBodyWriter(obj.getClass(), null, null, mediaType);
    if (writer != null) {
        writer.writeTo(obj, obj.getClass(), null, null, mediaType, null, servletResponse.getOutputStream());
        return;
    }
    // What to do
    servletResponse.getWriter().println(obj.toString());
}

Example 18 with MessageBodyWriter

use of javax.ws.rs.ext.MessageBodyWriter in project dropwizard by dropwizard.

the class OptionalMessageBodyWriter method writeTo.

@SuppressWarnings({ "rawtypes", "unchecked" })
@Override
public void writeTo(Optional<?> entity, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException {
    if (!entity.isPresent()) {
        throw EmptyOptionalException.INSTANCE;
    }
    final ParameterizedType actualGenericType = (ParameterizedType) genericType;
    final Type actualGenericTypeArgument = actualGenericType.getActualTypeArguments()[0];
    final MessageBodyWriter writer = requireNonNull(mbw).get().getMessageBodyWriter(entity.get().getClass(), actualGenericTypeArgument, annotations, mediaType);
    writer.writeTo(entity.get(), entity.get().getClass(), actualGenericTypeArgument, annotations, mediaType, httpHeaders, entityStream);
}

Example 19 with MessageBodyWriter

use of javax.ws.rs.ext.MessageBodyWriter in project dropwizard by dropwizard.

the class OptionalMessageBodyWriter method writeTo.

@SuppressWarnings({ "rawtypes", "unchecked" })
@Override
public void writeTo(Optional<?> entity, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException {
    if (!entity.isPresent()) {
        throw EmptyOptionalException.INSTANCE;
    }
    final Type innerGenericType = (genericType instanceof ParameterizedType) ? ((ParameterizedType) genericType).getActualTypeArguments()[0] : entity.get().getClass();
    final MessageBodyWriter writer = requireNonNull(mbw).get().getMessageBodyWriter(entity.get().getClass(), innerGenericType, annotations, mediaType);
    writer.writeTo(entity.get(), entity.get().getClass(), innerGenericType, annotations, mediaType, httpHeaders, entityStream);
}

Example 20 with MessageBodyWriter

use of javax.ws.rs.ext.MessageBodyWriter in project jersey by jersey.

the class PatchingInterceptor method aroundReadFrom.

@SuppressWarnings("unchecked")
@Override
public Object aroundReadFrom(ReaderInterceptorContext readerInterceptorContext) throws IOException, WebApplicationException {
    // Get the resource we are being called on, and find the GET method
    Object resource = uriInfo.getMatchedResources().get(0);
    Method found = null;
    for (Method next : resource.getClass().getMethods()) {
        if (next.getAnnotation(GET.class) != null) {
            found = next;
            break;
        }
    }
    if (found == null) {
        throw new InternalServerErrorException("No matching GET method on resource");
    }
    // Invoke the get method to get the state we are trying to patch
    Object bean;
    try {
        bean = found.invoke(resource);
    } catch (Exception e) {
        throw new WebApplicationException(e);
    }
    // Convert this object to a an array of bytes
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    MessageBodyWriter bodyWriter = workers.getMessageBodyWriter(bean.getClass(), bean.getClass(), new Annotation[0], MediaType.APPLICATION_JSON_TYPE);
    bodyWriter.writeTo(bean, bean.getClass(), bean.getClass(), new Annotation[0], MediaType.APPLICATION_JSON_TYPE, new MultivaluedHashMap<String, Object>(), baos);
    // Use the Jackson 2.x classes to convert both the incoming patch
    // and the current state of the object into a JsonNode / JsonPatch
    ObjectMapper mapper = new ObjectMapper();
    JsonNode serverState = mapper.readValue(baos.toByteArray(), JsonNode.class);
    JsonNode patchAsNode = mapper.readValue(readerInterceptorContext.getInputStream(), JsonNode.class);
    JsonPatch patch = JsonPatch.fromJson(patchAsNode);
    try {
        // Apply the patch
        JsonNode result = patch.apply(serverState);
        // Stream the result & modify the stream on the readerInterceptor
        ByteArrayOutputStream resultAsByteArray = new ByteArrayOutputStream();
        mapper.writeValue(resultAsByteArray, result);
        readerInterceptorContext.setInputStream(new ByteArrayInputStream(resultAsByteArray.toByteArray()));
        // Pass control back to the Jersey code
        return readerInterceptorContext.proceed();
    } catch (JsonPatchException ex) {
        throw new InternalServerErrorException("Error applying patch.", ex);
    }
}