Unrecognized field during deserialization despite @SerializedName annotation

Question

I am fetching some data via a REST service, but I am getting this error when deserializing the response :

com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "ResultSet Output" (class com.HolderCollectionWrapper), not marked as ignorable (one known property: "holders"]) at [Source: java.io.ByteArrayInputStream@74efa7bd; line: 1, column: 22] (through reference chain: com.HolderCollectionWrapper["ResultSet Output"])

This is my code :

response = restTemplate.exchange(requestUrl, HttpMethod.GET, request, HolderCollectionWrapper.class);


public class HolderCollectionWrapper {

    @SerializedName("ResultSet Output")
    private List<Holder> holders;

    public List<Holder> getHolders() {
        return holders;
    }

    public void setHolders(List<Holder> holders) {
        this.holders = holders;
    }
}

This is the JSON I am getting :

{
    "ResultSet Output": [
        {...}, {...}, {...}
    ]
}

Despite the @SerializedName("ResultSet Output"), it's not working, why ?

Answer 1

@SerializedName is a gson annotation and you are using jackson library for serialization.

The jackson annotation for field name is @JsonProperty

Try:

@JsonProperty("ResultSet Output")
private List<Holder> holders;