Question

我已经创建了网站帮助所需的类，但是无法反序列化。

public class Brand
{
    public string name { get; set; }
}

public class Link
{
    public string href { get; set; }
}


public class Price
{
    public double current { get; set; }
}

public class RootObject
{
    public Brand brand { get; set; }
    public string href { get; set; }
    public List<Link> links { get; set; }
    public List<string> mpns { get; set; }
    public string name { get; set; }
    public Price price { get; set; }
    public string productId { get; set; }
}

我在C＃中的尝试方式

string API = "https://www.verkkokauppa.com/resp-api/product?pids=552952"
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(API);
request.Method = "GET";
string result = "";
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
    Stream dataStream = response.GetResponseStream();
    StreamReader reader = new StreamReader(dataStream);
    result = reader.ReadToEnd();
    reader.Close();
    dataStream.Close();
}

var jsonresult = JsonConvert.DeserializeObject<RootObject>(result);

foreach (Brand p in jsonresult)
{
    Debug.WriteLine(p);
}

我知道我做错了什么，但是谁能帮助我仅从上述类中正确获取元素？

Answer 1

您提供的代码中几乎没有错误：

从终结点接收到的json是一个json数组。
因此，与其反序列化为RootObject，还不应该反序列化为List<RootObject>。
遍历jsonresult时，应使用RootObject而不是Brand

这是完整的解决方案：

using System;
using System.Collections.Generic;
using Newtonsoft.Json;
using System.Net;
using System.IO;
using System.Diagnostics;

public class Brand
{
    public string name { get; set; }
}

public class Link
{
    public string href { get; set; }
}

public class Price
{
    public double current { get; set; }
}

public class RootObject
{
    public Brand brand { get; set; }
    public string href { get; set; }
    public List<Link> links { get; set; }
    public List<string> mpns { get; set; }
    public string name { get; set; }
    public Price price { get; set; }
    public string productId { get; set; }
}

public class Program
{
    public static void Main()
    {
        string API = "https://www.verkkokauppa.com/resp-api/product?pids=552952";
        HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(API);
        request.Method = "GET";
        string result = "";
        using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
        {
            Stream dataStream = response.GetResponseStream();
            StreamReader reader = new StreamReader(dataStream);
            result = reader.ReadToEnd();
            reader.Close();
            dataStream.Close();
        }

        var jsonresult = JsonConvert.DeserializeObject<List<RootObject>>(result);

        foreach (RootObject p in jsonresult)
        {
            Debug.WriteLine(p.brand.name);

            foreach (Link link in p.links){
                Debug.WriteLine(link.href);
            }
            foreach (string mpn in p.mpns){
                Debug.WriteLine(mpn);
            }

        }
    }
}

here是在线版本，以防万一。

Answer 2

您可以使用https://quicktype.io通过JSON实体生成c＃代码。

我已经为您的json请求创建了c＃类。

https://app.quicktype.io?share=KNyJfG7rGBZH96H6yNXe

Answer 3

最后，我做到了。请更改您的模型。该模型应与您的JSON数据匹配。您可以查看完整的解决方案

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Net;

namespace Jsondemo
{
    public class Brand
    {
        public int id { get; set; }
        public string name { get; set; }
        public string slug { get; set; }
        public string support { get; set; }
        public string url { get; set; }
    }

    public class Path
    {
        public string id { get; set; }
        public string name { get; set; }
    }

    public class Category
    {
        public string id { get; set; }
        public string name { get; set; }
        public string slug { get; set; }
        public List<Path> path { get; set; }
    }

    public class Installment
    {
        public int months { get; set; }
        public int monthlySum { get; set; }
        public double totalAmount { get; set; }
        public double annualInterestRate { get; set; }
        public double interest { get; set; }
        public double fee { get; set; }
    }

    public class UiLabels
    {
        public string text { get; set; }
        public string price { get; set; }
        public string time { get; set; }
        public List<string> tooltip { get; set; }
    }

    public class Installment2
    {
        public int months { get; set; }
        public string monthlySum { get; set; }
        public double totalAmount { get; set; }
        public double annualInterestRate { get; set; }
        public double interest { get; set; }
        public double fee { get; set; }
    }

    public class UiLabels2
    {
        public string text { get; set; }
        public string price { get; set; }
        public string time { get; set; }
        public List<string> tooltip { get; set; }
    }

    public class CompanyFinancing
    {
        public List<Installment2> installments { get; set; }
        public UiLabels2 uiLabels { get; set; }
    }

    public class Financing
    {
        public List<Installment> installments { get; set; }
        public string type { get; set; }
        public double price { get; set; }
        public UiLabels uiLabels { get; set; }
        public CompanyFinancing companyFinancing { get; set; }
    }

    public class Image
    {
        public string __invalid_name__45 { get; set; }
        public string __invalid_name__90 { get; set; }
        public string __invalid_name__300 { get; set; }
        public string __invalid_name__500 { get; set; }
        public string __invalid_name__960 { get; set; }
        public string orig { get; set; }
    }

    public class Link
    {
        public string name { get; set; }
        public string type { get; set; }
        public string href { get; set; }
    }

    public class Package
    {
        public int width { get; set; }
        public int height { get; set; }
        public int depth { get; set; }
        public int volume { get; set; }
        public int weight { get; set; }
    }

    public class Price
    {
        public double current { get; set; }
        public double currentTaxless { get; set; }
        public string currentFormatted { get; set; }
        public double original { get; set; }
        public double originalTaxless { get; set; }
        public string originalFormatted { get; set; }
        public object discountAmount { get; set; }
        public object discountPercentage { get; set; }
        public int taxRate { get; set; }
        public object discount { get; set; }
        public object deposit { get; set; }
        public object unit { get; set; }
    }

    public class Rating
    {
        public int reviewCount { get; set; }
        public int averageOverallRating { get; set; }
        public int recommendedCount { get; set; }
    }

    public class Relations
    {
        public List<object> recommended { get; set; }
        public List<object> newer { get; set; }
        public List<object> older { get; set; }
        public List<object> bundles { get; set; }
    }

    public class Restrictions
    {
        public bool isRestricted { get; set; }
        public List<object> pickupAllowed { get; set; }
        public List<object> postalCodeAllowed { get; set; }
        public string description { get; set; }
        public string descriptionShort { get; set; }
    }

    public class ShipmentPrice
    {
        public int id { get; set; }
        public string name { get; set; }
        public double price { get; set; }
        public bool pickup { get; set; }
    }

    public class Js
    {
        public int stock { get; set; }
        public string stockStatus { get; set; }
    }

    public class Pak
    {
        public int stock { get; set; }
        public string stockStatus { get; set; }
    }

    public class Vendor
    {
        public int stock { get; set; }
        public string stockStatus { get; set; }
    }

    public class Warehouses
    {
        public Js js { get; set; }
        public Pak pak { get; set; }
        public Vendor vendor { get; set; }
    }

    public class Web
    {
        public bool isAvailable { get; set; }
        public bool isPurchasable { get; set; }
        public int stock { get; set; }
        public string stockStatus { get; set; }
        public int minDays { get; set; }
        public int maxDays { get; set; }
        public Warehouses warehouses { get; set; }
        public string ranking { get; set; }
    }

    public class Js2
    {
        public bool isAvailable { get; set; }
        public bool isPurchasable { get; set; }
        public int stock { get; set; }
        public string stockStatus { get; set; }
        public int minDays { get; set; }
        public int maxDays { get; set; }
    }

    public class JsKioski
    {
        public bool isAvailable { get; set; }
        public bool isPurchasable { get; set; }
        public int stock { get; set; }
        public string stockStatus { get; set; }
        public int minDays { get; set; }
        public int maxDays { get; set; }
    }

    public class Oul
    {
        public bool isAvailable { get; set; }
        public bool isPurchasable { get; set; }
        public int stock { get; set; }
        public string stockStatus { get; set; }
        public int minDays { get; set; }
        public int maxDays { get; set; }
    }

    public class Pir
    {
        public bool isAvailable { get; set; }
        public bool isPurchasable { get; set; }
        public int stock { get; set; }
        public string stockStatus { get; set; }
        public int minDays { get; set; }
        public int maxDays { get; set; }
    }

    public class Rai
    {
        public bool isAvailable { get; set; }
        public bool isPurchasable { get; set; }
        public int stock { get; set; }
        public string stockStatus { get; set; }
        public int minDays { get; set; }
        public int maxDays { get; set; }
    }

    public class Pu1
    {
        public bool isAvailable { get; set; }
        public bool isPurchasable { get; set; }
        public int stock { get; set; }
        public string stockStatus { get; set; }
        public int minDays { get; set; }
        public int maxDays { get; set; }
    }

    public class Pu2
    {
        public bool isAvailable { get; set; }
        public bool isPurchasable { get; set; }
        public int stock { get; set; }
        public string stockStatus { get; set; }
        public int minDays { get; set; }
        public int maxDays { get; set; }
    }

    public class Pu3
    {
        public bool isAvailable { get; set; }
        public bool isPurchasable { get; set; }
        public int stock { get; set; }
        public string stockStatus { get; set; }
        public int minDays { get; set; }
        public int maxDays { get; set; }
    }

    public class Pu4
    {
        public bool isAvailable { get; set; }
        public bool isPurchasable { get; set; }
        public int stock { get; set; }
        public string stockStatus { get; set; }
        public int minDays { get; set; }
        public int maxDays { get; set; }
    }

    public class Stores
    {
        public Js2 js { get; set; }
        public JsKioski js_kioski { get; set; }
        public Oul oul { get; set; }
        public Pir pir { get; set; }
        public Rai rai { get; set; }
        public Pu1 pu1 { get; set; }
        public Pu2 pu2 { get; set; }
        public Pu3 pu3 { get; set; }
        public Pu4 pu4 { get; set; }
    }

    public class Stocks
    {
        public Web web { get; set; }
        public Stores stores { get; set; }
    }

    public class Availability
    {
        public string _id { get; set; }
        public int pid { get; set; }
        public object overrideText { get; set; }
        public bool isElectronic { get; set; }
        public bool isVirtual { get; set; }
        public bool isInStoresOnly { get; set; }
        public bool isReleased { get; set; }
        public bool isShippingAllowed { get; set; }
        public bool isPickupAllowed { get; set; }
        public bool isStockVisible { get; set; }
        public bool isPurchasable { get; set; }
        public bool isSoldOut { get; set; }
        public bool isEOL { get; set; }
        public bool isFastDeliveryAvailable { get; set; }
        public bool isStoreOrderAllowed { get; set; }
        public bool hasStock { get; set; }
        public Stocks stocks { get; set; }
        public List<object> tags { get; set; }
        public DateTime updatedAt { get; set; }
        public DateTime verifiedAt { get; set; }
        public int updateCount { get; set; }
        public DateTime updateStartTime { get; set; }
    }

    public class RootObject
    {
        public string _id { get; set; }
        public bool active { get; set; }
        public int ageLimit { get; set; }
        public Brand brand { get; set; }
        public List<string> bulletPoints { get; set; }
        public List<object> bundleProducts { get; set; }
        public List<object> campaigns { get; set; }
        public List<string> categories { get; set; }
        public Category category { get; set; }
        public DateTime createdAt { get; set; }
        public List<object> demoLocations { get; set; }
        public string description { get; set; }
        public string descriptionShort { get; set; }
        public List<string> eans { get; set; }
        public bool electronic { get; set; }
        public Financing financing { get; set; }
        public string freeShipmentFor { get; set; }
        public bool hidePriceEstimate { get; set; }
        public string href { get; set; }
        public List<Image> images { get; set; }
        public List<Link> links { get; set; }
        public object maxAmountPerOrder { get; set; }
        public List<string> mpns { get; set; }
        public string name { get; set; }
        public Package package { get; set; }
        public int pid { get; set; }
        public Price price { get; set; }
        public string productId { get; set; }
        public Rating rating { get; set; }
        public Relations relations { get; set; }
        public DateTime releasedAt { get; set; }
        public Restrictions restrictions { get; set; }
        public List<string> ribbons { get; set; }
        public List<ShipmentPrice> shipmentPrices { get; set; }
        public List<object> shopAreas { get; set; }
        public bool vak { get; set; }
        public int visible { get; set; }
        public string warranty { get; set; }
        public DateTime updatedAt { get; set; }
        public DateTime verifiedAt { get; set; }
        public int updateCount { get; set; }
        public DateTime updateStartTime { get; set; }
        public Availability availability { get; set; }
    }
    class Program
    {
        static void Main(string[] args)
        {
            string API = "https://www.verkkokauppa.com/resp-api/product?pids=552952";
            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(API);
            request.Method = "GET";
            string result = "";
            using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
            {
                Stream dataStream = response.GetResponseStream();
                StreamReader reader = new StreamReader(dataStream);
                result = reader.ReadToEnd();
                reader.Close();
                dataStream.Close();
            }

            var jsonresult = JsonConvert.DeserializeObject<List<RootObject>>(result);

           foreach (RootObject p in jsonresult)
        {
            foreach (var item in p.links)
            {
                Debug.WriteLine(item.href);
            }

        }
            Console.WriteLine("Hello World!");
        }
    }
}

使用NewtonSoft反序列化JSON

3 个答案: