gson 泛型对象 转换

JsonUtil.fromJson(body, new TypeToken<BaseReqVo<EnterNotifyReqVo>>(){}.getType());

用 TypeToken 构造一个 BaseReqVo<EnterNotifyReqVo> 的 type

    public static <T> T fromJson(String str, Type type) {
return getGsonInstance().fromJson(str, type);
}