Is there a Gson @DeserializedName equivalent to the @SerializedName annotation?

I’m able to set the @SerializedName to this_field so when I use the toJson() function it’ll use it properly. However when I’m trying to read it in via fromJson() function it’ll try to use thisField.

Normally I’d create a serializer like the one below; however is there something built in that will handle this or is the only way to make a custom deserializer for each class?

A class

@Data
@Builder
@AllArgsConstructor
public class A {
    @SerializedName("this_field")
    private Integer thisField;
}

ADeserializer class

public class ADeserializer implements JsonDeserializer<A> {
    @Override
    public Additional deserialize(JsonElement jsonElement, Type type, JsonDeserializationContext jsonDeserializationContext) throws JsonParseException {
        JsonObject obj = jsonElement.getAsJsonObject();
        return A.builder()
                .thisField(obj.get("this_field").isJsonNull() ? null : obj.get("this_field").getAsJsonObject)
                .build();
    }
}

>Solution :

According to the doc

public abstract String[] alternate Returns: the alternative names of
the field when it is deserialized

so you can use

@SerializedName(value="this_field", alternate={"thisField"}) 
private Integer thisField;

This would lead into this_field being used during serialization.

During deserialization it would be used this_field if it is available and if not it will use thisField if this becomes available.