Question

在我的项目中，我试图从我的应用程序预订酒店。现在我有点坚持使用该方法检查酒店是否在特定日期可用，因为API响应是一个具有不同内容的json对象。它包含可用的房间类型以及您想要住宿的折扣。所以可能有所有可用的房间，我会得到这样的响应：

"rates": {
    "10": {
        "dates": [
            {
                "date": "2018-05-01",
                "amount": 1495.0
            }
        ],
        "total": 1495.0,
        "discounted_total": null
    },
    "5": {
        "dates": [
            {
                "date": "2018-05-01",
                "amount": 1395.0
            }
        ],
        "total": 1395.0,
        "discounted_total": null
    },
    "4": {
        "dates": [
            {
                "date": "2018-05-01",
                "amount": 1295.0
            }
        ],
        "total": 1295.0,
        "discounted_total": null
    },
    "7": {
        "dates": [
            {
                "date": "2018-05-01",
                "amount": 1695.0
            }
        ],
        "total": 1695.0,
        "discounted_total": null
    },
    "6": {
        "dates": [
            {
                "date": "2018-05-01",
                "amount": 1495.0
            }
        ],
        "total": 1495.0,
        "discounted_total": null
    },
    "9": {
        "dates": [
            {
                "date": "2018-05-01",
                "amount": 1795.0
            }
        ],
        "total": 1795.0,
        "discounted_total": null
    },
    "8": {
        "dates": [
            {
                "date": "2018-05-01",
                "amount": 1895.0
            }
        ],
        "total": 1895.0,
        "discounted_total": null
    }
}

4到10是可用房间类型的ID。因此，如果只有6到10类型可用，我对费率的回复只会包含6到10.我如何序列化费率对象以获得所有可用的房型？

现在我用

@SerializedName("rates")
private JsonObject rates;

但是我不确定我现在应该如何使用它来获得所有的房间类型。也许知道我在响应中有一个可用的房型列表作为整数也是有帮助的。

我希望有人可以提前帮助我。

Answer 1

对于那些遇到这个问题并且不知道如何将他们的变量json对象转换为可访问对象的人来说，例如hotelRoomRateData.getRates（）。getRateId（），我会发布我的解决方案，让你知道我是怎么做到的：

首先我必须创建两个对象来解析我的json对象。这些对象称为HotelRoomRateData和HotelRoomRateDateData。

HotelRoomRateData如下所示:(它是房间类型ID的费率字段，例如10,5等）

public class HotelRoomRateData {
    @SerializedName("dates")
    private List<HotelRoomRateDateData> dates;
    @SerializedName("total")
    private Float total;
    @SerializedName("discounted_total")
    private Float discountedTotal;

    public List<HotelRoomRateDateData> getDates() {
        return dates;
    }

    public Float getTotal() {
        return total;
    }

    public Float getDiscountedTotal() {
        return discountedTotal;
    }

    public void setDates(List<HotelRoomRateDateData> dates) {
        this.dates = dates;
    }

    public void setTotal(Float total) {
        this.total = total;
    }

    public void setDiscountedTotal(Float discountedTotal) {
        this.discountedTotal = discountedTotal;
    }

    @Override
    public String toString() {
        return "HotelRoomRateData{" +
                "dates=" + dates +
                ", total=" + total +
                ", discountedTotal=" + discountedTotal +
                '}';
    }
}

HotelRoomRateDateData如下所示:(它是json对象中“dates”字段中的列表）

public class HotelRoomRateDateData {
    @SerializedName("date")
    private String date;
    @SerializedName("amount")
    private Float amount;

    public String getDate() {
        return date;
    }

    public Float getAmount() {
        return amount;
    }

    public void setDate(String date) {
        this.date = date;
    }

    public void setAmount(Float amount) {
        this.amount = amount;
    }

    @Override
    public String toString() {
        return "HotelRoomRateDateData{" +
                "date='" + date + '\'' +
                ", amount=" + amount +
                '}';
    }
}

然后我将private List<HotelRoomRateData> uiUsableRates;添加了getter和setter到我正在使用的对象

@SerializedName("rates") private JsonObject rates;

现在我将json对象的内容“rate”解析为我创建的对象，以便在服务器响应中访问项目中的后者。

JsonObject rates = response.body().getRates();  //get the json object
List<HotelRoomRateData> uiUsableRates = new ArrayList<>(); //create a list in which you're going to save your parsed objects
for (int y = 0; y < response.body().getRoomTypes().size(); y++) {
    String roomTypeIdAsString = response.body().getRoomTypes().get(y).toString(); //get the id of the room, with which you are able to access the different rates for the room types
    JsonObject ratesInside = rates.get(roomTypeIdAsString).getAsJsonObject(); //get the rates object to the room id
    HotelRoomRateData hotelRoomRateData = new HotelRoomRateData(); //create the HotelRoomRateObject to parse the json object 
    hotelRoomRateData.setTotal(ratesInside.get("total").getAsFloat()); 
    JsonArray ratesInsideDates = ratesInside.get("dates").getAsJsonArray(); //get as json array, because it can also be a variable content
    HotelRoomRateDateData hotelRoomRateDateData = new HotelRoomRateDateData(); //create the HotelRoomRateDateObject to parse the json object 
    List<HotelRoomRateDateData> hotelRoomRateDateDataList = new ArrayList<>(); //create a list to which the objects can be added
    for (int i = 0; i < ratesInsideDates.size(); i++) {
        JsonObject dateData = ratesInsideDates.get(i).getAsJsonObject(); //go through the list and set the values
        hotelRoomRateDateData.setDate(dateData.get("date").getAsString());
        hotelRoomRateDateData.setAmount(dateData.get("amount").getAsFloat());
        hotelRoomRateDateDataList.add(hotelRoomRateDateData); //add the parsed object to the list
    }
    hotelRoomRateData.setDates(hotelRoomRateDateDataList); //set the list to the HotelRoomRateData object
    uiUsableRates.add(hotelRoomRateData); //add the parsed object to your list
    Log.i(TAG, uiUsableRates.toString());
}
response.body().setUiUsableRates(uiUsableRates); //set the parsed list to use it later inside the project

我希望以后可以帮助别人，快乐编码：）

如何使用可变内容序列化JsonObject？

1 个答案: