jackson disable @JsonFormat annotation

Question

I am using jackson library and I have came across a situation where I want to disable @JsonFormat annotation using objectmapper while serialization/deserialization.

My Api code is in 3rd party library so i can't remove/add any annotation, so objectMapper is the only choice.

Api class:

public class ApiClass {

  @JsonFormat(pattern = "yyyy-MM-dd'T'HH:mm:ss'Z'")
  private DateTime time;

}

My code:

ObjectMapper objectMapper = new ObjectMapper();
objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
objectMapper.configure(Feature.ALLOW_COMMENTS, true);
objectMapper.configure(MapperFeature.AUTO_DETECT_IS_GETTERS, true);
objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
objectMapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
objectMapper.setSerializationInclusion(Include.NON_ABSENT);
objectMapper.registerModule(new JodaModule());
objectMapper.registerModule(new JavaTimeModule());

String str = " {\"time\": \"2012-05-01\"}";

ApiClass msg = objectMapper.readValue(str, ApiClass.class);

I want this conversion to happen successfully.

Currently I am getting: com.fasterxml.jackson.databind.JsonMappingException: Invalid format: "2012-05-01" is too short

Please help me here.

Thanks in advance

Answer 1

Below is the code that will disable JsonFormat specifically:

ObjectMapper objectMapper = new ObjectMapper();
objectMapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
objectMapper.configure(Feature.ALLOW_COMMENTS, true);
objectMapper.configure(MapperFeature.AUTO_DETECT_IS_GETTERS, true);
objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
objectMapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
objectMapper.setSerializationInclusion(Include.NON_ABSENT);
objectMapper.registerModule(new JodaModule());
objectMapper.registerModule(new JavaTimeModule());

objectMapper.setAnnotationIntrospector(new JacksonAnnotationIntrospector() {
    @Override
    protected <A extends Annotation> A _findAnnotation(final Annotated annotated,
        final Class<A> annoClass) {
      if (!annotated.hasAnnotation(JsonFormat.class)) {    //since we need to disable JsonFormat annotation.
        return super._findAnnotation(annotated, annoClass);
      }
      return null;
    }
  });


String str = " {\"time\": \"2012-05-01\"}";

ApiClass msg = objectMapper.readValue(str, ApiClass.class);
System.out.println(objectMapper.writeValueAsString(msg ));

In case we need to disable multiple annotations(JsonFormat, JsonUnWrapped) then:

replace:

if (!annotated.hasAnnotation(JsonFormat.class)) {

with:

if (!annotated.hasOneOf(new Class[] {JsonFormat.class, JsonUnwrapped.class})) {

Thanks all.