如何使用Gson处理带有时间戳的Json响应?？java.lang.IndexOutOfBoundsException

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonDeserializer;

import java.lang.reflect.Type;
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;

public class GsonTimestampExample {
    public static void main(String[] args) {
        // 创建Gson对象
        Gson gson = createGson();

        // 示例Json响应
        String json = "{\"timestamp\": 1632345600}";

        // 解析Json响应
        Response response = gson.fromJson(json, Response.class);

        // 输出解析结果
        System.out.println("Timestamp: " + response.getTimestamp());
        System.out.println("LocalDateTime: " + response.getLocalDateTime());
    }

    // 创建自定义的Gson对象
    private static Gson createGson() {
        GsonBuilder gsonBuilder = new GsonBuilder();

        // 注册自定义的适配器
        gsonBuilder.registerTypeAdapter(LocalDateTime.class, (JsonDeserializer<LocalDateTime>) (json, typeOfT, context) -> {
            long timestamp = json.getAsJsonPrimitive().getAsLong();
            Instant instant = Instant.ofEpochSecond(timestamp);
            return LocalDateTime.ofInstant(instant, ZoneId.systemDefault());
        });

        // 设置日期时间格式化
        gsonBuilder.setDateFormat("yyyy-MM-dd HH:mm:ss");

        return gsonBuilder.create();
    }

    // 响应类
    private static class Response {
        private long timestamp;

        public long getTimestamp() {
            return timestamp;
        }

        public LocalDateTime getLocalDateTime() {
            return LocalDateTime.ofInstant(Instant.ofEpochSecond(timestamp), ZoneId.systemDefault());
        }
    }
}