Java Code Examples for com.fasterxml.jackson.databind.DeserializationFeature

public static void configureObjectMapper(ObjectMapper mapper) {
  mapper.registerModule(new JavaTimeModule());
  mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
  mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
  mapper.disable(SerializationFeature.FAIL_ON_EMPTY_BEANS);
  mapper.enable(SerializationFeature.INDENT_OUTPUT);
  mapper.setSerializationInclusion(Include.NON_NULL);
  mapper.setConfig(mapper.getSerializationConfig().withView(ApiOnly.class));

  // add all sub types of CloudAccount
  for (var type : REFLECTIONS_SUBTYPE_SCANNER.getSubTypesOf(CloudAccount.class)) {
    mapper.registerSubtypes(type);
  }

  // set injectable value to null
  var values = new InjectableValues.Std();
  values.addValue("hash", null);

  mapper.setInjectableValues(values);
}
 

public BaseContextImpl(@NotNull final OkHttpClient client,
                       @NotNull final String url,
                       @NotNull final String authToken,
                       @NotNull final Logger logger) {

    this.authToken = authToken;
    this.finalUrl = Objects.requireNonNull(HttpUrl.parse(url))
            .newBuilder()
            .addPathSegment(this.getPath())
            .build();
    this.client = client;
    this.logger = logger;
    this.mapper = new ObjectMapper();

    mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
    mapper.registerModule(new JavaTimeModule());
    mapper.enable(MapperFeature.ACCEPT_CASE_INSENSITIVE_ENUMS);
}
 

private static void configure(ObjectMapper om, Object feature, boolean state) {
    if (feature instanceof SerializationFeature)
        om.configure((SerializationFeature) feature, state);
    else if (feature instanceof DeserializationFeature)
        om.configure((DeserializationFeature) feature, state);
    else if (feature instanceof JsonParser.Feature)
        om.configure((JsonParser.Feature) feature, state);
    else if (feature instanceof JsonGenerator.Feature)
        om.configure((JsonGenerator.Feature) feature, state);
    else if (feature instanceof MapperFeature)
        om.configure((MapperFeature) feature, state);
    else if (feature instanceof Include) {
        if (state) {
            om.setSerializationInclusion((Include) feature);
        }
    }
}
 

public static <T> T parseJson(Path path, Class<T> javaType)
{
    if (!path.isAbsolute()) {
        path = path.toAbsolutePath();
    }

    checkArgument(exists(path), "File does not exist: %s", path);
    checkArgument(isReadable(path), "File is not readable: %s", path);

    try {
        byte[] json = Files.readAllBytes(path);
        ObjectMapper mapper = new ObjectMapperProvider().get()
                .enable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
        return mapper.readValue(json, javaType);
    }
    catch (IOException e) {
        throw new IllegalArgumentException(format("Invalid JSON file '%s' for '%s'", path, javaType), e);
    }
}
 

@PostConstruct
void initialize() {
    DatabindCodec.mapper().disable(DeserializationFeature.ADJUST_DATES_TO_CONTEXT_TIME_ZONE);
    DatabindCodec.mapper().disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);             
    DatabindCodec.mapper().registerModule(new JavaTimeModule());
    DatabindCodec.mapper().findAndRegisterModules();
    
    DatabindCodec.prettyMapper().registerModule(new JavaTimeModule());
    DatabindCodec.prettyMapper().findAndRegisterModules();
    DatabindCodec.prettyMapper().disable(DeserializationFeature.ADJUST_DATES_TO_CONTEXT_TIME_ZONE);
    DatabindCodec.prettyMapper().disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);

    if (providedWebClient.isResolvable()) {
        this.client = providedWebClient.get();
        LOGGER.debug("Using provided web client instance");
    } else {
        final URI jobServiceURL = getJobsServiceUri();
        this.client = WebClient.create(vertx,
                                       new WebClientOptions()
                                               .setDefaultHost(jobServiceURL.getHost())
                                               .setDefaultPort(jobServiceURL.getPort()));
        LOGGER.debug("Creating new instance of web client for host {} and port {}", jobServiceURL.getHost(), jobServiceURL.getPort());
    }
}
 

@Test
public void booleanSetters() {
	ObjectMapper objectMapper = Jackson2ObjectMapperBuilder.json()
			.featuresToEnable(MapperFeature.DEFAULT_VIEW_INCLUSION,
					DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES,
					SerializationFeature.INDENT_OUTPUT)
			.featuresToDisable(MapperFeature.AUTO_DETECT_FIELDS,
					MapperFeature.AUTO_DETECT_GETTERS,
					MapperFeature.AUTO_DETECT_SETTERS,
					SerializationFeature.FAIL_ON_EMPTY_BEANS).build();
	assertNotNull(objectMapper);
	assertTrue(objectMapper.isEnabled(MapperFeature.DEFAULT_VIEW_INCLUSION));
	assertTrue(objectMapper.isEnabled(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES));
	assertFalse(objectMapper.isEnabled(MapperFeature.AUTO_DETECT_FIELDS));
	assertFalse(objectMapper.isEnabled(MapperFeature.AUTO_DETECT_GETTERS));
	assertFalse(objectMapper.isEnabled(MapperFeature.AUTO_DETECT_SETTERS));
	assertTrue(objectMapper.isEnabled(SerializationFeature.INDENT_OUTPUT));
	assertFalse(objectMapper.isEnabled(SerializationFeature.FAIL_ON_EMPTY_BEANS));
}
 

public ReportStatusServiceHttpImpl(
        MasterMonitor masterMonitor,
        Observable<Observable<Status>> tasksStatusSubject) {
    this.masterMonitor = masterMonitor;
    this.statusObservable = tasksStatusSubject;
    mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

    final MantisPropertiesService mantisPropertiesService = ServiceRegistry.INSTANCE.getPropertiesService();
    this.defaultConnTimeout = Integer.valueOf(mantisPropertiesService.getStringValue("mantis.worker.heartbeat.connection.timeout.ms", "100"));
    this.defaultSocketTimeout = Integer.valueOf(mantisPropertiesService.getStringValue("mantis.worker.heartbeat.socket.timeout.ms", "1000"));
    this.defaultConnMgrTimeout = Integer.valueOf(mantisPropertiesService.getStringValue("mantis.worker.heartbeat.connectionmanager.timeout.ms", "2000"));

    final Metrics metrics = MetricsRegistry.getInstance().registerAndGet(new Metrics.Builder()
            .name("ReportStatusServiceHttpImpl")
            .addCounter("hbConnectionTimeoutCounter")
            .addCounter("hbConnectionRequestTimeoutCounter")
            .addCounter("hbSocketTimeoutCounter")
            .addCounter("workerSentHeartbeats")
            .build());

    this.hbConnectionTimeoutCounter = metrics.getCounter("hbConnectionTimeoutCounter");
    this.hbConnectionRequestTimeoutCounter = metrics.getCounter("hbConnectionRequestTimeoutCounter");
    this.hbSocketTimeoutCounter = metrics.getCounter("hbSocketTimeoutCounter");
    this.workerSentHeartbeats = metrics.getCounter("workerSentHeartbeats");
}
 

public static ObjectMapper settingCommonObjectMapper(ObjectMapper objectMapper) {
    objectMapper.setDateFormat(new StdDateFormat());
    objectMapper.setTimeZone(TimeZone.getDefault());

    objectMapper.configure(JsonParser.Feature.ALLOW_SINGLE_QUOTES, true);

    objectMapper.configure(SerializationFeature.INDENT_OUTPUT, false);
    objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
    objectMapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);

    objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

    objectMapper.configure(MapperFeature.ACCEPT_CASE_INSENSITIVE_PROPERTIES, true);
    objectMapper.configure(MapperFeature.INFER_PROPERTY_MUTATORS, false);
    objectMapper.configure(MapperFeature.ALLOW_FINAL_FIELDS_AS_MUTATORS, false);

    return objectMapper;
}
 

@Bean
public Jackson2ObjectMapperBuilderCustomizer customJackson() {
    return builder -> builder
            // 在序列化时将日期转化为时间戳
            .featuresToEnable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS)
            .featuresToEnable(SerializationFeature.WRITE_DATE_TIMESTAMPS_AS_NANOSECONDS)
            // 在序列化枚举对象时使用toString方法
            .featuresToEnable(SerializationFeature.WRITE_ENUMS_USING_TO_STRING)
            // 在反序列化枚举对象时使用toString方法
            .featuresToEnable(DeserializationFeature.READ_ENUMS_USING_TO_STRING)
            .featuresToEnable(DeserializationFeature.READ_DATE_TIMESTAMPS_AS_NANOSECONDS)
            // 日期和时间格式："yyyy-MM-dd HH:mm:ss"
            // .simpleDateFormat(BaseConstants.DATETIME_FORMAT)
            .createXmlMapper(false)
            .timeZone("GMT+8:00")
            ;
}
 

@Override
public void run(ApplicationArguments args) throws Exception {
    log.info("Initializing Staccato");

    if (!configProps.isIncludeNullFields()) {
        objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
    }
    objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, true);

    if (null != stacInitializers && !stacInitializers.isEmpty()) {
        for (StacInitializer stacInitializer : stacInitializers) {
            log.info("Initializer matched: " + stacInitializer.getName());
            stacInitializer.init();
        }
    }

    log.info("Staccato initialization complete. Setting health status to UP.");
    staccatoHealthIndicator.setHealthy(true);
}
 

private void customizeDefaultFeatures(ObjectMapper objectMapper) {
	if (!this.features.containsKey(MapperFeature.DEFAULT_VIEW_INCLUSION)) {
		configureFeature(objectMapper, MapperFeature.DEFAULT_VIEW_INCLUSION, false);
	}
	if (!this.features.containsKey(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)) {
		configureFeature(objectMapper, DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
	}
}
 

public static JsonDecoder createJsonDecoder() {
  // Force Transaction Deserialization to fail if missing expected properties
  final ObjectMapper jsonObjectMapper = new ObjectMapper();
  jsonObjectMapper.configure(DeserializationFeature.FAIL_ON_NULL_CREATOR_PROPERTIES, true);
  jsonObjectMapper.configure(DeserializationFeature.FAIL_ON_MISSING_CREATOR_PROPERTIES, true);

  return new JsonDecoder(jsonObjectMapper);
}
 

public static ObjectMapper createJSONMapper() {
   ObjectMapper mapper = new ObjectMapper();

   // SerializationFeature for changing how JSON is written
   mapper.disable(SerializationFeature.FAIL_ON_EMPTY_BEANS);
   mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);

   // DeserializationFeature for changing how JSON is read as POJOs:
   mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
   mapper.enable(DeserializationFeature.ACCEPT_EMPTY_STRING_AS_NULL_OBJECT);
   return mapper;
}
 

@Bean
public ObjectMapper jsonMapper() {
  return new ObjectMapper()
      .registerModule(new SchemaSerializationModule())
      .registerModule(Event.module())
      .registerModule(new JavaTimeModule())
      .disable(MapperFeature.DEFAULT_VIEW_INCLUSION)
      .disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)
      .disable(SerializationFeature.WRITE_DATE_KEYS_AS_TIMESTAMPS);
}
 

@Bean
public Decoder feignDecoder() {
	ObjectMapper objectMapper = new ObjectMapper();
	objectMapper.configure(DeserializationFeature.UNWRAP_ROOT_VALUE, false);
	objectMapper.registerModule(new JavaTimeModule());
	HttpMessageConverter jacksonConverter = new MappingJackson2HttpMessageConverter(objectMapper);
	ObjectFactory<HttpMessageConverters> objectFactory = () -> new HttpMessageConverters(jacksonConverter);
	return new ResponseEntityDecoder(new SpringDecoder(objectFactory));
}
 

private <X> X getSingle(String userURL, Map<String, String> headers, Class<X> type) throws IOException {
    HttpGet httpGet = new HttpGet(userURL);
    for (Map.Entry<String, String> entry : headers.entrySet()) {
        httpGet.addHeader(entry.getKey(), entry.getValue());
    }
    try (CloseableHttpClient httpClient = HttpClients.createSystem()) {
        HttpResponse httpResponse = httpClient.execute(httpGet);
        if (null != httpResponse && httpResponse.getStatusLine().getStatusCode() != 200) {
            LOGGER.error(httpResponse.toString());
            LOGGER.error(EntityUtils.toString(httpResponse.getEntity(), StandardCharsets.UTF_8));
            throw new IllegalStateException(
                    "An error was returned in the response from the Gitlab API. See the previous log messages for details");
        } else if (null != httpResponse) {
            LOGGER.debug(httpResponse.toString());
            HttpEntity entity = httpResponse.getEntity();
            X user = new ObjectMapper()
                .configure(DeserializationFeature.ACCEPT_EMPTY_ARRAY_AS_NULL_OBJECT, true)
                .configure(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true)
                .configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false)
                .readValue(IOUtils.toString(entity.getContent(), StandardCharsets.UTF_8), type);

            LOGGER.info(type + " received");

            return user;
        } else {
            throw new IOException("No response reveived");
        }
    }
}
 

@Test  // SPR-12724
public void mimetypeParametrizedConstructor() {
	MimeType mimetype = new MimeType("application", "xml", StandardCharsets.UTF_8);
	MappingJackson2MessageConverter converter = new MappingJackson2MessageConverter(mimetype);
	assertThat(converter.getSupportedMimeTypes(), contains(mimetype));
	assertFalse(converter.getObjectMapper().getDeserializationConfig()
			.isEnabled(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES));
}
 

public static ObjectMapper create(BlockAllocator allocator)
{
    ObjectMapper objectMapper = new ObjectMapper();
    SimpleModule module = new SimpleModule();
    module.addSerializer(Schema.class, new SchemaSerializer());
    module.addDeserializer(Schema.class, new SchemaDeserializer());
    module.addDeserializer(Block.class, new BlockDeserializer(allocator));
    module.addSerializer(Block.class, new BlockSerializer());

    //todo provide a block serializer instead of batch serializer but only serialize the batch not the schema.
    objectMapper.registerModule(module)
            .disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)
            .enable(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY);
    return objectMapper;
}
 

public static <T> T fromJson(String jsonString, Class<T> clazz) {
    ObjectMapper mapper = new ObjectMapper();
    mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
    mapper.configure(DeserializationFeature.USE_BIG_DECIMAL_FOR_FLOATS, true);
    try {
        return mapper.readValue(jsonString, clazz);
    } catch (IOException e) {
        logger.error(e.getMessage(), e);
        throw new HyenaServiceException(" result can not converto to Object");
    }

}
 

public static <T> T fromJson(String json, TypeReference<T> typereference) {
    ObjectMapper mapper = new ObjectMapper();
    mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
    mapper.configure(DeserializationFeature.USE_BIG_DECIMAL_FOR_FLOATS, true);
    try {
        return mapper.readValue(json, typereference);
    } catch (IOException e) {
        logger.error(e.getMessage(), e);
        throw new HyenaServiceException(" result can not converto to Object");
    }
}
 

public static String toJsonString(Object obj) {
    ObjectMapper mapper = new ObjectMapper();
    mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

    String jsonString = "";
    try {
        jsonString = mapper.writeValueAsString(obj);
    } catch (JsonProcessingException e) {
        logger.error(e.getMessage(), e);
    }
    return jsonString;
}
 

@Inject
public PinotClient(
        PinotConfig config,
        PinotMetrics metrics,
        @ForPinot HttpClient httpClient,
        JsonCodec<GetTables> tablesJsonCodec,
        JsonCodec<BrokersForTable> brokersForTableJsonCodec,
        JsonCodec<TimeBoundary> timeBoundaryJsonCodec,
        JsonCodec<BrokerResponseNative> brokerResponseCodec)
{
    this.brokersForTableJsonCodec = requireNonNull(brokersForTableJsonCodec, "brokers for table json codec is null");
    this.timeBoundaryJsonCodec = requireNonNull(timeBoundaryJsonCodec, "time boundary json codec is null");
    this.tablesJsonCodec = requireNonNull(tablesJsonCodec, "json codec is null");
    this.schemaJsonCodec = new JsonCodecFactory(() -> new ObjectMapper()
            .configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false)).jsonCodec(Schema.class);
    this.brokerResponseCodec = requireNonNull(brokerResponseCodec, "brokerResponseCodec is null");
    requireNonNull(config, "config is null");
    if (config.getControllerUrls() == null || config.getControllerUrls().isEmpty()) {
        throw new PinotException(PINOT_INVALID_CONFIGURATION, Optional.empty(), "No pinot controllers specified");
    }

    this.controllerUrls = config.getControllerUrls();
    this.metrics = requireNonNull(metrics, "metrics is null");
    this.httpClient = requireNonNull(httpClient, "httpClient is null");
    this.brokersForTableCache = CacheBuilder.newBuilder()
            .expireAfterWrite(config.getMetadataCacheExpiry().roundTo(TimeUnit.MILLISECONDS), TimeUnit.MILLISECONDS)
            .build((CacheLoader.from(this::getAllBrokersForTable)));
}
 

public void getUser() throws Exception {
  HttpRequest request = restClient.requestBuilder(
      URI.create(userEndpoint + "?name=x"),
      Optional.empty()
  ).GET().build();
  HttpResponse<String> response = restClient.send(request);
  LOG.info("Response status code: {}", response.statusCode());
  LOG.info("Response headers: {}", response.headers());
  LOG.info("Response body: {}", response.body());
  if (response.statusCode() == 200) {
    objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
    UserVO[] userVO = objectMapper.readValue(response.body(), UserVO[].class);
    LOG.info("UserVO: {}", userVO.length);
  }
}
 

public void getUser() throws Exception {
  HttpRequest request = restClient.requestBuilder(
      URI.create(userEndpoint + "?name=x"),
      Optional.empty()
  ).GET().build();
  HttpResponse<String> response = restClient.send(request);
  LOG.info("Response status code: {}", response.statusCode());
  LOG.info("Response headers: {}", response.headers());
  LOG.info("Response body: {}", response.body());
  if (response.statusCode() == 200) {
    objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
    UserVO[] userVO = objectMapper.readValue(response.body(), UserVO[].class);
    LOG.info("UserVO: {}", userVO.length);
  }
}
 

public void getUser() throws Exception {
  HttpRequest request = restClient.requestBuilder(
      URI.create(userEndpoint + "?name=x"),
      Optional.empty()
  ).GET().build();
  HttpResponse<String> response = restClient.send(request);
  LOG.info("Response status code: {}", response.statusCode());
  LOG.info("Response headers: {}", response.headers());
  LOG.info("Response body: {}", response.body());
  if (response.statusCode() == 200) {
    objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
    UserVO[] userVO = objectMapper.readValue(response.body(), UserVO[].class);
    LOG.info("UserVO: {}", userVO.length);
  }
}
 

@Test
public void defaultConstructor() {
	MappingJackson2MessageConverter converter = new MappingJackson2MessageConverter();
	assertThat(converter.getSupportedMimeTypes(),
			contains(new MimeType("application", "json")));
	assertFalse(converter.getObjectMapper().getDeserializationConfig()
			.isEnabled(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES));
}
 

@Test  // SPR-12724
public void mimetypeParametrizedConstructor() {
	MimeType mimetype = new MimeType("application", "xml", StandardCharsets.UTF_8);
	MappingJackson2MessageConverter converter = new MappingJackson2MessageConverter(mimetype);
	assertThat(converter.getSupportedMimeTypes(), contains(mimetype));
	assertFalse(converter.getObjectMapper().getDeserializationConfig()
			.isEnabled(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES));
}
 

@Test  // SPR-12724
public void mimetypesParametrizedConstructor() {
	MimeType jsonMimetype = new MimeType("application", "json", StandardCharsets.UTF_8);
	MimeType xmlMimetype = new MimeType("application", "xml", StandardCharsets.UTF_8);
	MappingJackson2MessageConverter converter = new MappingJackson2MessageConverter(jsonMimetype, xmlMimetype);
	assertThat(converter.getSupportedMimeTypes(), contains(jsonMimetype, xmlMimetype));
	assertFalse(converter.getObjectMapper().getDeserializationConfig()
			.isEnabled(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES));
}
 

private void customizeDefaultFeatures(ObjectMapper objectMapper) {
	if (!this.features.containsKey(MapperFeature.DEFAULT_VIEW_INCLUSION)) {
		configureFeature(objectMapper, MapperFeature.DEFAULT_VIEW_INCLUSION, false);
	}
	if (!this.features.containsKey(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)) {
		configureFeature(objectMapper, DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
	}
}
 

@Test
public void defaultProperties() {
	ObjectMapper objectMapper = Jackson2ObjectMapperBuilder.json().build();
	assertNotNull(objectMapper);
	assertFalse(objectMapper.isEnabled(MapperFeature.DEFAULT_VIEW_INCLUSION));
	assertFalse(objectMapper.isEnabled(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES));
	assertTrue(objectMapper.isEnabled(MapperFeature.AUTO_DETECT_FIELDS));
	assertTrue(objectMapper.isEnabled(MapperFeature.AUTO_DETECT_GETTERS));
	assertTrue(objectMapper.isEnabled(MapperFeature.AUTO_DETECT_IS_GETTERS));
	assertTrue(objectMapper.isEnabled(MapperFeature.AUTO_DETECT_SETTERS));
	assertFalse(objectMapper.isEnabled(SerializationFeature.INDENT_OUTPUT));
	assertTrue(objectMapper.isEnabled(SerializationFeature.FAIL_ON_EMPTY_BEANS));
}