java - Jackson - Required property?

Question

I'm using Jackson's readValue() method on an object mapper to read from a JSON file and convert it into my java object.

eg.

mapperObject.readValue( node, MyTargetClass.class )

Are there any annotations that I can set on MyTargetClass to enforce required attributes? For example, if I have a JSON object with properties ABC,DEF and GHI, and my Json is the following

{
  "ABC" : "somevalue"
  "DEF" : "someothervalue" 
}

I want it to fail somehow, and only succeed on the readValue if it contained ABC, DEF and GHI.

Answer 1

You can mark a property as required with the @JsonProperty(required = true) annotation, and it will throw a JsonMappingException during deserialization if the property is missing or null.

Edit: I received a downvote for this without comment. I'd love to know why, since it does exactly the right thing.