Jackson list deserialization. nested Lists

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You can write custom deserializer for List<Item> items. See below example:

class ItemsJsonDeserializer extends JsonDeserializer<List<Item>> {

    @Override
    public List<Item> deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {
        InnerItems innerItems = jp.readValueAs(InnerItems.class);

        return innerItems.elements;
    }

    private static class InnerItems {
        public List<Item> elements;
    }
}

Now, you have to inform Jackson to use it for your property. You can do this in this way:

public class Order {
  public String name;
  @JsonDeserialize(using = ItemsJsonDeserializer.class)
  public List<Item> items;
}

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