使用Newtonsoft将JSON反序列化为.NET对象（或者LINQ to JSON可能？）
本文翻译自：Deserializing JSON to .NET object using Newtonsoft (or LINQ to JSON maybe?)
I know there are a few posts about Newtonsoft so hopefully this isn't exactly a repeat...I'm trying to convert JSON data returned by Kazaa's API into a nice object of some kind 我知道有一些关于Newtonsoft的帖子，所以希望这不是一个重复...我试图将Kazaa的API返回的JSON数据转换成某种形状的好对象
WebClient client = new WebClient();
Stream stream = client.OpenRead("http://api.kazaa.com/api/v1/search.json?q=muse&type=Album");
StreamReader reader = new StreamReader(stream);
List<string> list = Newtonsoft.Json.JsonConvert.DeserializeObject<List<string>>(reader.Read().ToString());
foreach (string item in list)
{
Console.WriteLine(item);
}
//Console.WriteLine(reader.ReadLine());
stream.Close();
That JsonConvert line is just the most recent one I was trying...I'm not quite getting it and was hoping to eliminate some footwork by asking you guys. 那个JsonConvert系列只是我最近尝试过的一个......我不太了解它并且希望通过问你们来消除一些步法。 I was originally trying to convert it into a Dictionary or something...and actually, I just need to snag a couple of values in there so judging by the documentation, maybe Newtonsoft's LINQ to JSON might be a better choice? 我原本试图将它转换成字典或其他东西......实际上，我只需要在那里获取一些值，因此根据文档来判断，也许Newtonsoft的LINQ to JSON可能是更好的选择？ Thoughts/Links? 思考/链接？
Here is an example of the JSON return data: 以下是JSON返回数据的示例：
{
"page": 1,
"total_pages": 8,
"total_entries": 74,
"q": "muse",
"albums": [
{
"name": "Muse",
"permalink": "Muse",
"cover_image_url": "http://image.kazaa.com/images/69/01672812 1569/Yaron_Herman_Trio/Muse/Yaron_Herman_Trio-Muse_1.jpg",
"id": 93098,
"artist_name": "Yaron Herman Trio"
},
{
"name": "Muse",
"permalink": "Muse",
"cover_image_url": "htt p://image.kazaa.com/images/54/888880301154/Candy_Lo/Muse/Candy_Lo-Muse_1.jpg",
"i d": 102702,
"artist_name": "\u76e7\u5de7\u97f3"
},
{
"name": "Absolution",
"permalink": " Absolution",
"cover_image_url": "http://image.kazaa.com/images/65/093624873365/Mus e/Absolution/Muse-Absolution_1.jpg",
"id": 48896,
"artist_name": "Muse"
},
{
"name": "Ab solution",
"permalink": "Absolution-2",
"cover_image_url": "http://image.kazaa.com/i mages/20/825646911820/Muse/Absolution/Muse-Absolution_1.jpg",
"id": 118573,
"artist _name": "Muse"
},
{
"name": "Black Holes And Revelations",
"permalink": "Black-Holes-An d-Revelations",
"cover_image_url": "http://image.kazaa.com/images/66/093624428466/ Muse/Black_Holes_And_Revelations/Muse-Black_Holes_And_Revelations_1.jpg",
"id": 48813,
"artist_name": "Muse"
},
{
"name": "Black Holes And Revelations",
"permalink": "Bla ck-Holes-And-Revelations-2",
"cover_image_url": "http://image.kazaa.com/images/86/ 825646911486/Muse/Black_Holes_And_Revelations/Muse-Black_Holes_And_Revelations_1 .jpg",
"id": 118543,
"artist_name": "Muse"
},
{
"name": "Origin Of Symmetry",
"permalink": "Origin-Of-Symmetry",
"cover_image_url": "http://image.kazaa.com/images/29/825646 912629/Muse/Origin_Of_Symmetry/Muse-Origin_Of_Symmetry_1.jpg",
"id": 120491,
"artis t_name": "Muse"
},
{
"name": "Showbiz",
"permalink": "Showbiz",
"cover_image_url": "http: //image.kazaa.com/images/68/825646182268/Muse/Showbiz/Muse-Showbiz_1.jpg",
"id": 60444,
"artist_name": "Muse"
},
{
"name": "Showbiz",
"permalink": "Showbiz-2",
"cover_imag e_url": "http://image.kazaa.com/images/50/825646912650/Muse/Showbiz/Muse-Showbiz_ 1.jpg",
"id": 118545,
"artist_name": "Muse"
},
{
"name": "The Resistance",
"permalink": "T he-Resistance",
"cover_image_url": "http://image.kazaa.com/images/36/825646864836/ Muse/The_Resistance/Muse-The_Resistance_1.jpg",
"id": 121171,
"artist_name": "Muse"
}
],
"per_page": 10
}
I did some more reading and found Newtonsoft's LINQ to JSON is exactly what I wanted...using WebClient, Stream, StreamReader, and Newtonsoft...I can hit Kazaa for JSON data, extract a URL, download the file, and do it all in like seven lines of code! 我做了一些阅读，发现Newtonsoft的LINQ to JSON正是我想要的......使用WebClient，Stream，StreamReader和Newtonsoft ......我可以点击Kazaa获取JSON数据，提取URL，下载文件，然后进行操作全部像七行代码！ I love it. 我喜欢它。
WebClient client = new WebClient();
Stream stream = client.OpenRead("http://api.kazaa.com/api/v1/search.json?q=muse&type=Album");
StreamReader reader = new StreamReader(stream);
Newtonsoft.Json.Linq.JObject jObject = Newtonsoft.Json.Linq.JObject.Parse(reader.ReadLine());
// Instead of WriteLine, 2 or 3 lines of code here using WebClient to download the file
Console.WriteLine((string)jObject["albums"][0]["cover_image_url"]);
stream.Close();
This post gets so many hits I thought it might be helpful to include the "using" bits that are discussed in the comments. 这篇文章获得了如此多的点击量，我认为包含评论中讨论的“使用”位可能会有所帮助。
using(var client = new WebClient())
using(var stream = client.OpenRead("http://api.kazaa.com/api/v1/search.json?q=muse&type=Album"))
using (var reader = new StreamReader(stream))
{
var jObject = Newtonsoft.Json.Linq.JObject.Parse(reader.ReadLine());
Console.WriteLine((string) jObject["albums"][0]["cover_image_url"]);
}
#1楼
参考：https://stackoom.com/question/Jvb5/使用Newtonsoft将JSON反序列化为-NET对象-或者LINQ-to-JSON可能
#2楼
You can use the C# dynamic type to make things easier. 您可以使用C＃ dynamic类型来简化操作。 This technique also makes re-factoring simpler as it does not rely on magic-strings. 这种技术也使得重新分解更简单，因为它不依赖于魔术字符串。
JSON JSON
The JSON string below is a simple response from an HTTP API call, and it defines two properties: Id and Name . 下面的JSON字符串是来自HTTP API调用的简单响应，它定义了两个属性： Id和Name 。
{"Id": 1, "Name": "biofractal"}
C# C＃
Use JsonConvert.DeserializeObject<dynamic>() to deserialize this string into a dynamic type then simply access its properties in the usual way. 使用JsonConvert.DeserializeObject<dynamic>()将此字符串反序列化为动态类型，然后以通常的方式访问其属性。
dynamic results = JsonConvert.DeserializeObject<dynamic>(json);
var id = results.Id;
var name= results.Name;
If you specify the type of the results variable as dynamic , instead of using the var keyword, then the property values will correctly deserialize, eg Id to an int and not a JValue (thanks to GFoley83 for the comment below). 如果将results变量的类型指定为dynamic ，而不是使用var关键字，则属性值将正确反序列化，例如Id为int而不是JValue （感谢GFoley83以获取下面的注释）。
Note : The NuGet link for the Newtonsoft assembly is http://nuget.org/packages/newtonsoft.json . 注意 ：Newtonsoft程序集的NuGet链接是http://nuget.org/packages/newtonsoft.json 。
Package : You can also add the package with nuget live installer, with your project opened just do browse package and then just install it install, unistall, update , it will just be added to your project under Dependencies/NuGet 包 ：您也可以使用nuget实时安装程序添加包，打开项目只需浏览包然后安装它， 安装，unistall，更新 ，它只会被添加到您的项目下Dependencies / NuGet
#3楼
With the dynamic keyword, it becomes really easy to parse any object of this kind: 使用dynamic关键字，解析此类对象变得非常容易：
dynamic x = Newtonsoft.Json.JsonConvert.DeserializeObject(jsonString);
var page = x.page;
var total_pages = x.total_pages
var albums = x.albums;
foreach(var album in albums)
{
var albumName = album.name;
// Access album data;
}
#4楼
Also, if you're just looking for a specific value nested within the JSON content you can do something like so: 此外，如果您只是在寻找嵌套在JSON内容中的特定值，您可以执行以下操作：
yourJObject.GetValue("jsonObjectName").Value<string>("jsonPropertyName");
And so on from there. 等等。
This could help if you don't want to bear the cost of converting the entire JSON into a C# object. 如果您不想承担将整个JSON转换为C＃对象的成本，这可能会有所帮助。
#5楼
Deserialize and get the value (when the collection is dynamic): 反序列化并获取值（当集合是动态的时）：
// First serializing
dynamic collection = new { stud = stud_datatable }; // The stud_datable is the list or data table
string jsonString = JsonConvert.SerializeObject(collection);
// Second Deserializing
dynamic StudList = JsonConvert.DeserializeObject(jsonString);
var stud = StudList.stud;
foreach (var detail in stud)
{
var Address = detail["stud_address"]; // Access Address data;
}
#6楼
I like this method: 我喜欢这种方法：
using Newtonsoft.Json.Linq;
// jsonString is your JSON-formatted string
JObject jsonObj = JObject.Parse(jsonString);
Dictionary<string, object> dictObj = jsonObj.ToObject<Dictionary<string, object>>();
You can now access anything you want using the dictObj as a dictionary. 您现在可以使用dictObj作为字典访问任何您想要的dictObj 。 You can also use Dictionary<string, string> if you prefer to get the values as strings. 如果您希望将值作为字符串获取Dictionary<string, string>也可以使用Dictionary<string, string> 。
You can use this same method to cast as any kind of .NET object. 您可以使用相同的方法来转换为任何类型的.NET对象。