How to deserialize Json into java object if a property is not present in the java object(should ignore json element)using Jackson?

Question

I am working on a project, where the Json contract may change overtime, If they had new property to the response Json, I might get a exception when deserializing into java object, How to ignore the new properties and only deserialize elements which are present in java Object, I am using Jackson 1.9.13, Does this version have feature which could ignore the Json element?

Answer 1

You can do this in 2 ways:

1. Add annotation to class:

   @JsonIgnoreProperties(ignoreUnknown = true)
   class <class_name>{
     ....
     ....
   }
   

2. Configure ObjectMapper:

   objectMapper.configure(Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);