GSON 特殊类型支持序列化和反序列化，如LocalDateTime

 

 

GSON 特殊类型支持序列化和反序列化，如LocalDateTime

 

DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
    Gson gson = new GsonBuilder()
        .registerTypeAdapter(LocalDateTime.class, new JsonDeserializer<LocalDateTime>() {
          @Override
          public LocalDateTime deserialize(JsonElement json, Type type,
              JsonDeserializationContext jsonDeserializationContext) throws JsonParseException {
            String asString = json.getAsJsonPrimitive().getAsString();
            LocalDateTime parse = LocalDateTime.parse(asString, dateTimeFormatter);
            return parse;
          }
        }).registerTypeAdapter(LocalDateTime.class, new JsonSerializer<LocalDateTime>() {
          @Override
          public JsonElement serialize(LocalDateTime localDateTime, Type srcType,
              JsonSerializationContext context) {
            return new JsonPrimitive(dateTimeFormatter.format(localDateTime));
          }
        }).create();

    Result<DbTradeInfo> result = (Result<DbTradeInfo>) gson.fromJson(
        "{\"createTime\":\"2022-04-19 00:00:32\"}"
        ,
        new TypeToken<Result<DbTradeInfo>>() {
        }.getType());

    System.out.println(result.getData().getCreateTime().getClass());

    System.out.println(gson.toJson(result));