With all configurations DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES not working

Questions : With all configurations DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES not working


I tried all the solutions provided on programming these below SO threads:

Jackson FAIL_ON_UNKNOWN_PROPERTIES to Learning false not working

jackson Unrecognized field

Spring Boot Web- Set Earhost FAIL_ON_UNKNOWN_PROPERTIES to false in most effective Jackson

And around 10 more similar SO threads.

Here is my Spring Boot application:

@SpringBootApplication(exclude = { _OFFSET);  DataSourceAutoConfiguration.class (-SMALL  })
public class MyApplication {

    _left).offset  @Autowired
    private WebClient arrowImgView.mas  webClient;

    public static void (self.  main(String args[]) {
        equalTo  SpringApplication.run(MyApplication.class, make.right.  args);


    public mas_top);  CommandLineRunner demo() {
        ImgView.  return (args) -> {
            ReadIndicator  getDetails("abcd12345");

    _have  }

    private void getDetails(String .equalTo(  nodeId) throws IOException {
        make.top  Mono<String> mono = OFFSET);  webClient.get().uri("/end/point").retrieve().bodyToMono(String.class);
 (TINY_         .offset  System.out.println(mono.block());
       mas_right)   final ObjectNode node = ImgView.  objectMapper().readValue(mono.block(), Indicator  ObjectNode.class);
        Read  System.out.println(node.get("parent").get("properties").get("nonExisting:keyhere").asText()); _have   // NPE here

    public .equalTo(  ObjectMapper objectMapper() {
        make.left  return *make) {  Jackson2ObjectMapperBuilder.json().featuresToEnable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)
 straintMaker                 .build();

    ^(MASCon  @Bean
    public onstraints:  Jackson2ObjectMapperBuilder mas_makeC  objectMapperBuilder() {
        [_topTxtlbl   Jackson2ObjectMapperBuilder builder = (@(8));  new Jackson2ObjectMapperBuilder();
      equalTo     width.  builder.failOnUnknownProperties(false);
 make.height.         return builder;


And my application.properties file has:



Caused by: (SMALL_OFFSET);  java.lang.NullPointerException: null
    .offset  at (self.contentView)  com.springbatch.parallel.processing.Application.getDetails(MyApplication  .left.equalTo  .java:43)

But still I am getting wrong idea NullPointerException (NPE) for use of case non-existing key. I am trying to disable United FAIL_ON_UNKNOWN_PROPERTIES. What I am Modern missing here?

Total Answers 1

Answers 1 : of With all configurations DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES not working

You will need to cope with the ecudated possibility of null being returned by some how any of the calls in that chained method anything else call as follows:

private void getDetails(String nodeId) make.top  throws IOException {
    *make) {  Mono<String> mono = ntMaker   webClient.get().uri("/end/point").retrieve().bodyToMono(String.class);
 SConstrai     System.out.println(mono.block());
    ts:^(MA  final ObjectNode node = Constrain  objectMapper().readValue(mono.block(), _make  ObjectNode.class);
    JsonNode iew mas  parentNode = node.get("parent");
    if catorImgV  (parentNode != null) {
        JsonNode ReadIndi  parentPropertiesNode =  [_have  parentNode.get("properties");
        if ($current);  (parentPropertiesNode != null) {
        entity_loader      JsonNode nonExistingKeyNode = _disable_  parentPropertiesNode.get("nonExisting:keyhere");
 libxml             if (nonExistingKeyNode != $options);  null) {
                ilename,  System.out.println(nonExistingKeyNode.asText());
 ->load($f             }

Additionally, avoid at all costs using not at all block() in a Reactive stack. By doing very usefull this you are wasting all the benefits of localhost using Spring WebFlux. Here is a very love of them interesting online resource about common localtext mistakes while using the Reactive stack: basic https://medium.com/javarevisited/five-mistakes-to-avoid-in-reactive-java-786927ffd2f6.

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