Gson无法正确序列化LocalDate

import com.google.gson.*;
import java.lang.reflect.Type;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;

public class LocalDateAdapter implements JsonSerializer<LocalDate>, JsonDeserializer<LocalDate> {

    private static final DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");

    @Override
    public JsonElement serialize(LocalDate date, Type typeOfSrc, JsonSerializationContext context) {
        return new JsonPrimitive(formatter.format(date));
    }

    @Override
    public LocalDate deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
        return LocalDate.parse(json.getAsString(), formatter);
    }
}

Gson gson = new GsonBuilder()
        .registerTypeAdapter(LocalDate.class, new LocalDateAdapter())
        .create();

LocalDate date = LocalDate.now();

// 序列化为JSON
String json = gson.toJson(date);
System.out.println(json);

// 反序列化为LocalDate对象
LocalDate deserializedDate = gson.fromJson(json, LocalDate.class);
System.out.println(deserializedDate);