How do you globally set Jackson to ignore unknown properties within Spring?

Question

Jackson has annotations for ignoring unknown properties within a class using:

@JsonIgnoreProperties(ignoreUnknown = true)  

It allows you to ignore a specific property using this annotation:

@JsonIgnore 

If you'd like to globally set it you can modify the object mapper:

// jackson 1.9 and before objectMapper.configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, false); // or jackson 2.0 objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false); 

How do you set this globally using spring so it can be @Autowired at server start up without writing additional classes?

Answer 1

For jackson 1.9x or below you can ignore unknown properties with object mapper provider

@Provider @Component public class JerseyObjectMapperProvider implements ContextResolver<ObjectMapper> {      @Override     public ObjectMapper getContext(Class<?> type) {          ObjectMapper result = new ObjectMapper();         result.configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);         return result;     } } 

For jackson 2.x and above you can ignore unknown properties with object mapper provider

@Provider @Component public class JerseyObjectMapperProvider implements ContextResolver<ObjectMapper> {      @Override     public ObjectMapper getContext(Class<?> type) {          ObjectMapper result = new ObjectMapper();         result.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);         return result;     } } 

Jersey classes are not auto-discovered by Spring. Have to register them manually.

public class JerseyConfig extends ResourceConfig {     public JerseyConfig() {         register(JerseyObjectMapperProvider.class);     } }