使用Newtonsoft.Json从蒸汽存储API中获取数据
使用Newtonsoft.Json从蒸汽存储API中获取数据
提问于 2018-07-29 12:32:40
我正在尝试从蒸汽存储API中获取数据。其目标是传递一个AppID，然后使用API获取该游戏的数据，并将其存储在对象中。我正在获取数据，直到序列化。下面是使用的代码I：
namespace GData
{
public class Rootobject
{
public Game _9050 { get; set; }
}
public class Game
{
public bool success { get; set; }
public Data data { get; set; }
}
public class Data
{
public string type { get; set; }
public string name { get; set; }
public int steam_appid { get; set; }
public int required_age { get; set; }
public bool is_free { get; set; }
public string detailed_description { get; set; }
public string about_the_game { get; set; }
public string short_description { get; set; }
public string supported_languages { get; set; }
public string header_image { get; set; }
public string website { get; set; }
public Pc_Requirements pc_requirements { get; set; }
public object[] mac_requirements { get; set; }
public object[] linux_requirements { get; set; }
public string[] developers { get; set; }
public string[] publishers { get; set; }
public Price_Overview price_overview { get; set; }
public int[] packages { get; set; }
public Package_Groups[] package_groups { get; set; }
public Platforms platforms { get; set; }
public Metacritic metacritic { get; set; }
public Category[] categories { get; set; }
public Genre[] genres { get; set; }
public Screenshot[] screenshots { get; set; }
public Recommendations recommendations { get; set; }
public Release_Date release_date { get; set; }
public Support_Info support_info { get; set; }
public string background { get; set; }
}
public class Pc_Requirements
{
public string minimum { get; set; }
}
public class Price_Overview
{
public string currency { get; set; }
public int initial { get; set; }
public int final { get; set; }
public int discount_percent { get; set; }
}
public class Platforms
{
public bool windows { get; set; }
public bool mac { get; set; }
public bool linux { get; set; }
}
public class Metacritic
{
public int score { get; set; }
public string url { get; set; }
}
public class Recommendations
{
public int total { get; set; }
}
public class Release_Date
{
public bool coming_soon { get; set; }
public string date { get; set; }
}
public class Support_Info
{
public string url { get; set; }
public string email { get; set; }
}
public class Package_Groups
{
public string name { get; set; }
public string title { get; set; }
public string description { get; set; }
public string selection_text { get; set; }
public string save_text { get; set; }
public int display_type { get; set; }
public string is_recurring_subscription { get; set; }
public Sub[] subs { get; set; }
}
public class Sub
{
public int packageid { get; set; }
public string percent_savings_text { get; set; }
public int percent_savings { get; set; }
public string option_text { get; set; }
public string option_description { get; set; }
public string can_get_free_license { get; set; }
public bool is_free_license { get; set; }
public int price_in_cents_with_discount { get; set; }
}
public class Category
{
public int id { get; set; }
public string description { get; set; }
}
public class Genre
{
public string id { get; set; }
public string description { get; set; }
}
public class Screenshot
{
public int id { get; set; }
public string path_thumbnail { get; set; }
public string path_full { get; set; }
}
}获取JSON：
public class GameData
{
public Game GetGameData(int GameId)
{
var url = "https://store.steampowered.com/api/appdetails/?appids=" + GameId.ToString();
//Game GameData = _download_serialized_json_data<Game>(url);
HttpWebRequest WebReq = (HttpWebRequest)WebRequest.Create(string.Format(url));
WebReq.Method = "GET";
HttpWebResponse WebResp = (HttpWebResponse)WebReq.GetResponse();
Console.WriteLine(WebResp.StatusCode);
Console.WriteLine(WebResp.Server);
string jsonString;
using (Stream stream = WebResp.GetResponseStream())
{
StreamReader reader = new StreamReader(stream, System.Text.Encoding.UTF8);
jsonString = reader.ReadToEnd();
}
Game GameData = new Game();
GameData = JsonConvert.DeserializeObject<Game>(jsonString);
return GameData;
}
}代码正在返回成功: false。
问题似乎在于反序列化，因为jsonString = reader.ReadToEnd(); jsonString变量正在满是数据。
Game类有什么问题吗？
我正在使用C#和Newtonsoft库。
在jsonString (https://store.steampowered.com/api/appdetails/?appids=570)中检索的示例JSON：
{
"570":{
"success":true,
"data":{
"type":"game",
"name":"Dota 2",
"steam_appid":570,
"required_age":0,
"is_free":true,
"dlc":[
859040
],
"detailed_description":"<strong>The most-played game on Steam.<\/strong><br>Every day, millions of players worldwide enter battle as one of over a hundred Dota heroes. And no matter if it's their 10th hour of play or 1,000th, there's always something new to discover. With regular updates that ensure a constant evolution of gameplay, features, and heroes, Dota 2 has truly taken on a life of its own.<br><br><strong>One Battlefield. Infinite Possibilities.<\/strong><br>When it comes to diversity of heroes, abilities, and powerful items, Dota boasts an endless array\u2014no two games are the same. Any hero can fill multiple roles, and there's an abundance of items to help meet the needs of each game. Dota doesn't provide limitations on how to play, it empowers you to express your own style.<br><br><strong>All heroes are free.<\/strong><br>Competitive balance is Dota's crown jewel, and to ensure everyone is playing on an even field, the core content of the game\u2014like the vast pool of heroes\u2014is available to all players. Fans can collect cosmetics for heroes and fun add-ons for the world they inhabit, but everything you need to play is already included before you join your first match.<br><br><strong>Bring your friends and party up.<\/strong><br>Dota is deep, and constantly evolving, but it's never too late to join. <br>Learn the ropes playing co-op vs. bots. Sharpen your skills in the hero demo mode. Jump into the behavior- and skill-based matchmaking system that ensures you'll <br>be matched with the right players each game.",
"about_the_game":"<strong>The most-played game on Steam.<\/strong><br>Every day, millions of players worldwide enter battle as one of over a hundred Dota heroes. And no matter if it's their 10th hour of play or 1,000th, there's always something new to discover. With regular updates that ensure a constant evolution of gameplay, features, and heroes, Dota 2 has truly taken on a life of its own.<br><br><strong>One Battlefield. Infinite Possibilities.<\/strong><br>When it comes to diversity of heroes, abilities, and powerful items, Dota boasts an endless array\u2014no two games are the same. Any hero can fill multiple roles, and there's an abundance of items to help meet the needs of each game. Dota doesn't provide limitations on how to play, it empowers you to express your own style.<br><br><strong>All heroes are free.<\/strong><br>Competitive balance is Dota's crown jewel, and to ensure everyone is playing on an even field, the core content of the game\u2014like the vast pool of heroes\u2014is available to all players. Fans can collect cosmetics for heroes and fun add-ons for the world they inhabit, but everything you need to play is already included before you join your first match.<br><br><strong>Bring your friends and party up.<\/strong><br>Dota is deep, and constantly evolving, but it's never too late to join. <br>Learn the ropes playing co-op vs. bots. Sharpen your skills in the hero demo mode. Jump into the behavior- and skill-based matchmaking system that ensures you'll <br>be matched with the right players each game.",
"short_description":"Every day, millions of players worldwide enter battle as one of over a hundred Dota heroes. And no matter if it's their 10th hour of play or 1,000th, there's always something new to discover. With regular updates that ensure a constant evolution of gameplay, features, and heroes, Dota 2 has truly taken on a life of its own.",
"supported_languages":"Bulgarian, Czech, Danish, Dutch, English<strong>*<\/strong>, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Korean<strong>*<\/strong>, Norwegian, Polish, Portuguese, Portuguese-Brazil, Romanian, Russian, Simplified Chinese<strong>*<\/strong>, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian<br><strong>*<\/strong>languages with full audio support",
"reviews":"\u201cA modern multiplayer masterpiece.\u201d<br>9.5\/10 \u2013 <a href=\"https:\/\/www.destructoid.com\/review-dota-2-258506.phtml\" target=\"_blank\" rel=\"noreferrer\" >Destructoid<\/a><br><br>\u201cOnce you start to learn its secrets, there\u2019s a wild and exciting variety of play here that\u2019s unmatched, even by its peers.\u201d<br>9.4\/10 \u2013 <a href=\"http:\/\/www.ign.com\/articles\/2013\/07\/24\/dota-2-review\" target=\"_blank\" rel=\"noreferrer\" >IGN<\/a><br><br>\u201cDota 2 is possibly the only competitive free-to-play game that is totally uncompromised by its business model.\u201d<br>90\/100 \u2013 <a href=\"http:\/\/www.pcgamer.com\/dota-2-review-2\/\" target=\"_blank\" rel=\"noreferrer\" >PC Gamer<\/a><br>",
"header_image":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/header.jpg?t=1525818062",
"website":"http:\/\/www.dota2.com\/",
"pc_requirements":{
"minimum":"<strong>Minimum:<\/strong><br><ul class=\"bb_ul\"><li><strong>OS:<\/strong> Windows 7 or newer<br><\/li><li><strong>Processor:<\/strong> Dual core from Intel or AMD at 2.8 GHz<br><\/li><li><strong>Memory:<\/strong> 4 GB RAM<br><\/li><li><strong>Graphics:<\/strong> nVidia GeForce 8600\/9600GT, ATI\/AMD Radeon HD2600\/3600<br><\/li><li><strong>DirectX:<\/strong> Version 9.0c<br><\/li><li><strong>Network:<\/strong> Broadband Internet connection<br><\/li><li><strong>Storage:<\/strong> 15 GB available space<br><\/li><li><strong>Sound Card:<\/strong> DirectX Compatible<\/li><\/ul>"
},
"mac_requirements":{
"minimum":"<strong>Minimum:<\/strong><br><ul class=\"bb_ul\"><li><strong>OS:<\/strong> OS X Mavericks 10.9 or newer<br><\/li><li><strong>Processor:<\/strong> Dual core from Intel<br><\/li><li><strong>Memory:<\/strong> 4 GB RAM<br><\/li><li><strong>Graphics:<\/strong> nVidia 320M or higher, or Radeon HD 2400 or higher, or Intel HD 3000 or higher<br><\/li><li><strong>Network:<\/strong> Broadband Internet connection<br><\/li><li><strong>Storage:<\/strong> 15 GB available space<\/li><\/ul>"
},
"linux_requirements":{
"minimum":"<strong>Minimum:<\/strong><br><ul class=\"bb_ul\"><li><strong>OS:<\/strong> Ubuntu 12.04 or newer<br><\/li><li><strong>Processor:<\/strong> Dual core from Intel or AMD at 2.8 GHz<br><\/li><li><strong>Memory:<\/strong> 4 GB RAM<br><\/li><li><strong>Graphics:<\/strong> nVidia Geforce 8600\/9600GT (Driver v331), AMD HD 2xxx-4xxx (Driver mesa 10.5.9), AMD HD 5xxx+ (Driver mesa 10.5.9 or Catalyst 15.7), Intel HD 3000 (Driver mesa 10.6)<br><\/li><li><strong>Network:<\/strong> Broadband Internet connection<br><\/li><li><strong>Storage:<\/strong> 15 GB available space<br><\/li><li><strong>Sound Card:<\/strong> OpenAL Compatible Sound Card<\/li><\/ul>"
},
"developers":[
"Valve"
],
"publishers":[
"Valve"
],
"packages":[
197846
],
"package_groups":[
{
"name":"default",
"title":"Buy Dota 2",
"description":"",
"selection_text":"Select a purchase option",
"save_text":"",
"display_type":0,
"is_recurring_subscription":"false",
"subs":[
{
"packageid":197846,
"percent_savings_text":"",
"percent_savings":0,
"option_text":"Dota 2 - Commercial License - Free",
"option_description":"",
"can_get_free_license":"0",
"is_free_license":true,
"price_in_cents_with_discount":0
}
]
}
],
"platforms":{
"windows":true,
"mac":true,
"linux":true
},
"metacritic":{
"score":90,
"url":"http:\/\/www.metacritic.com\/game\/pc\/dota-2?ftag=MCD-06-10aaa1f"
},
"categories":[
{
"id":1,
"description":"Multi-player"
},
{
"id":9,
"description":"Co-op"
},
{
"id":29,
"description":"Steam Trading Cards"
},
{
"id":30,
"description":"Steam Workshop"
},
{
"id":40,
"description":"SteamVR Collectibles"
},
{
"id":35,
"description":"In-App Purchases"
},
{
"id":8,
"description":"Valve Anti-Cheat enabled"
}
],
"genres":[
{
"id":"1",
"description":"Action"
},
{
"id":"37",
"description":"Free to Play"
},
{
"id":"2",
"description":"Strategy"
}
],
"screenshots":[
{
"id":0,
"path_thumbnail":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_86d675fdc73ba10462abb8f5ece7791c5047072c.600x338.jpg?t=1525818062",
"path_full":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_86d675fdc73ba10462abb8f5ece7791c5047072c.1920x1080.jpg?t=1525818062"
},
{
"id":1,
"path_thumbnail":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_ad8eee787704745ccdecdfde3a5cd2733704898d.600x338.jpg?t=1525818062",
"path_full":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_ad8eee787704745ccdecdfde3a5cd2733704898d.1920x1080.jpg?t=1525818062"
},
{
"id":2,
"path_thumbnail":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_7ab506679d42bfc0c0e40639887176494e0466d9.600x338.jpg?t=1525818062",
"path_full":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_7ab506679d42bfc0c0e40639887176494e0466d9.1920x1080.jpg?t=1525818062"
},
{
"id":3,
"path_thumbnail":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_c9118375a2400278590f29a3537769c986ef6e39.600x338.jpg?t=1525818062",
"path_full":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_c9118375a2400278590f29a3537769c986ef6e39.1920x1080.jpg?t=1525818062"
},
{
"id":4,
"path_thumbnail":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_f9ebafedaf2d5cfb80ef1f74baa18eb08cad6494.600x338.jpg?t=1525818062",
"path_full":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_f9ebafedaf2d5cfb80ef1f74baa18eb08cad6494.1920x1080.jpg?t=1525818062"
},
{
"id":5,
"path_thumbnail":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_27b6345f22243bd6b885cc64c5cda74e4bd9c3e8.600x338.jpg?t=1525818062",
"path_full":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_27b6345f22243bd6b885cc64c5cda74e4bd9c3e8.1920x1080.jpg?t=1525818062"
},
{
"id":6,
"path_thumbnail":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_b33a65678dc71cc98df4890e22a89601ee56a918.600x338.jpg?t=1525818062",
"path_full":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_b33a65678dc71cc98df4890e22a89601ee56a918.1920x1080.jpg?t=1525818062"
},
{
"id":7,
"path_thumbnail":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_d0f973ce376ca5b6c08e081cb035e86ced105fa9.600x338.jpg?t=1525818062",
"path_full":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_d0f973ce376ca5b6c08e081cb035e86ced105fa9.1920x1080.jpg?t=1525818062"
},
{
"id":8,
"path_thumbnail":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_1f3b5f5ccf8b159294914c3fe028128a787304b6.600x338.jpg?t=1525818062",
"path_full":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_1f3b5f5ccf8b159294914c3fe028128a787304b6.1920x1080.jpg?t=1525818062"
},
{
"id":9,
"path_thumbnail":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_e0a92f15a6631a8186df79182d0fe28b5e37d8cb.600x338.jpg?t=1525818062",
"path_full":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/ss_e0a92f15a6631a8186df79182d0fe28b5e37d8cb.1920x1080.jpg?t=1525818062"
}
],
"movies":[
{
"id":256692021,
"name":"Dota 2 - Join the Battle",
"thumbnail":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/256692021\/movie.293x165.jpg?t=1501892790",
"webm":{
"480":"http:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/256692021\/movie480.webm?t=1501892790",
"max":"http:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/256692021\/movie_max.webm?t=1501892790"
},
"highlight":true
},
{
"id":256692017,
"name":"Dota 2 - Sizzle Reel",
"thumbnail":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/256692017\/movie.293x165.jpg?t=1501892798",
"webm":{
"480":"http:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/256692017\/movie480.webm?t=1501892798",
"max":"http:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/256692017\/movie_max.webm?t=1501892798"
},
"highlight":true
},
{
"id":2028243,
"name":"Dota 2 - The Greeviling",
"thumbnail":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/2028243\/movie.293x165.jpg?t=1447357208",
"webm":{
"480":"http:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/2028243\/movie480.webm?t=1447357208",
"max":"http:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/2028243\/movie_max.webm?t=1447357208"
},
"highlight":false
},
{
"id":81026,
"name":"Dota 2 Gamescom Trailer",
"thumbnail":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/81026\/movie.293x165.jpg?t=1501892804",
"webm":{
"480":"http:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/81026\/movie480.webm?t=1501892804",
"max":"http:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/81026\/movie_max.webm?t=1501892804"
},
"highlight":false
},
{
"id":2040250,
"name":"Dota 2 Reborn - Custom Games Are Here",
"thumbnail":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/2040250\/movie.293x165.jpg?t=1447376742",
"webm":{
"480":"http:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/2040250\/movie480.webm?t=1447376742",
"max":"http:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/2040250\/movie_max.webm?t=1447376742"
},
"highlight":false
}
],
"recommendations":{
"total":911325
},
"release_date":{
"coming_soon":false,
"date":"9 Jul, 2013"
},
"support_info":{
"url":"http:\/\/dev.dota2.com\/",
"email":""
},
"background":"https:\/\/steamcdn-a.akamaihd.net\/steam\/apps\/570\/page_bg_generated_v6b.jpg?t=1525818062"
}
}
}更新:如果我返回数据类型，所有值都为空
public Data GetGameData(int GameId)
{
var url = "https://store.steampowered.com/api/appdetails/?appids=" + GameId.ToString();
//Game GameData = _download_serialized_json_data<Game>(url);
HttpWebRequest WebReq = (HttpWebRequest)WebRequest.Create(string.Format(url));
WebReq.Method = "GET";
HttpWebResponse WebResp = (HttpWebResponse)WebReq.GetResponse();
Console.WriteLine(WebResp.StatusCode);
Console.WriteLine(WebResp.Server);
string jsonString;
using (Stream stream = WebResp.GetResponseStream())
{
StreamReader reader = new StreamReader(stream, System.Text.Encoding.UTF8);
jsonString = reader.ReadToEnd();
}
var dict = JsonConvert.DeserializeObject<Dictionary<string, Data>>(jsonString);
Data gameData = dict[GameId.ToString()];
return gameData;
}如果我返回游戏数据类型，我会得到相同的错误：
public Game GetGameData(int GameId)
{
var url = "https://store.steampowered.com/api/appdetails/?appids=" + GameId.ToString();
//Game GameData = _download_serialized_json_data<Game>(url);
HttpWebRequest WebReq = (HttpWebRequest)WebRequest.Create(string.Format(url));
WebReq.Method = "GET";
HttpWebResponse WebResp = (HttpWebResponse)WebReq.GetResponse();
Console.WriteLine(WebResp.StatusCode);
Console.WriteLine(WebResp.Server);
string jsonString;
using (Stream stream = WebResp.GetResponseStream())
{
StreamReader reader = new StreamReader(stream, System.Text.Encoding.UTF8);
jsonString = reader.ReadToEnd();
}
var dict = JsonConvert.DeserializeObject<Dictionary<string, Game>>(jsonString);
Game gameData = dict[GameId.ToString()];
return gameData;
}回答 1
Stack Overflow用户
回答已采纳
发布于 2018-07-30 00:09:34
在您的代码中，您正在尝试反序列化为包含success和data属性的success类。但是，在示例JSON中，这些属性不是根级的。相反，它们更低一级，在一个名为570的属性中，我猜它是游戏ID：
{
"570": {
"success": true,
"data": {
...
}
}
}由于您要反序列化的类与JSON不匹配，所以您将获得默认值(即success为false，data为null)。
要解决这个问题，您需要一些东西来包装您的Game类。而且，由于游戏ID可能会根据请求而改变，所以不能使用像Rootobject这样的常规类。相反，您需要反序列化为如下所示的Dictionary<string, Game>：
var dict = JsonConvert.DeserializeObject<Dictionary<string, Game>>(jsonString);然后，您可以从其中检索Game对象：
Game gameData = dict[GameId.ToString()];下面是一个工作演示：https://dotnetfiddle.net/ieT839
注意:在您的类中，您可以省略不需要的成员。在使用不同的游戏ID时，我发现JSON中的pc_requirements、mac_requirements和linux_requirements元素有时是一个对象，有时是一个对象数组。如果您的类声明为一件事，而JSON返回另一件事，那么反序列化时会得到一个错误。您可以使用自定义JsonConverter (如来自How to handle both a single item and an array for the same property using JSON.net的SingleOrArrayConverter<T> )来解决这个问题。但是，如果您真的不需要这些项目，您可以通过在您的Data类中注释掉它们来回避这个问题。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/51580365
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