我在这里有自己的代码并且已经获得了JSON结果，然后我不知道将JSON结果移动到下面的接口（IEntities函数）列表中。
class GetCategory : IEntities
{
private JsonHandle _jsonhandle;
private string _ocategory;
public async void TaskCategory()
{
_jsonhandle = new JsonHandle();
_jsonhandle.StrAPI = "http://api.nytimes.com/svc/books/v3/lists/names.json?api-key=7bb034b7693d6f9753b2f68e00b98c78%3A16%3A73599437";
var client = new HttpClient();
Task<string> datatask = client.GetStringAsync(_jsonhandle.StrAPI);
try
{
var JsonRead = await datatask;
JObject oCategory = JObject.Parse(JsonRead);
List<JToken> results = oCategory["results"].Children().ToList();
//serialize JSON results into .NET objects
List<object> dtCategory = new List<object>();
foreach (JToken result in results)
{
object _dtcategory = JsonConvert.DeserializeObject<object>(result.ToString());
dtCategory.Add(_dtcategory);
var listname = result["list_name"];
}
}
catch (Exception error)
{
Console.WriteLine("AW!" + error.StackTrace);
}
public List<object> BookCategory()
{
}
}
在IEntities接口的最后一个函数中，我需要将JSON结果放在接口List<object>中。
答案 0 :(得分：4)
使用 JSON 时，首先要做的是创建模型对象。为此，您应该手动分析 JSON 输出，或者您可以通过转到以下链接自动生成模型并粘贴您要使用的JSON或服务链接;
我刚刚使用了您的API链接，生成的输出是;
public class Result
{
public string list_name { get; set; }
public string display_name { get; set; }
public string list_name_encoded { get; set; }
public string oldest_published_date { get; set; }
public string newest_published_date { get; set; }
public string updated { get; set; }
}
public class RootObject
{
public string status { get; set; }
public string copyright { get; set; }
public int num_results { get; set; }
public List<Result> results { get; set; }
}
这将是我们的模型。
其次，据我所知，您想要做的只是获取结果列表，因此，当您反序列化 JSON 输出时，您将使用 Model.Result 并将其移至列表。
然后，要获得响应，可以使用返回async Task<string>的私有方法，并且在BookCategory()方法上，您可以获取结果并反序列化 JSON 并根据 JSON对象模型;
public List<Model.Result> BookCategory()
{
List<Model.Result> list = new List<Model.Result>();
var model = JsonConvert.DeserializeObject<Model.RootObject>(TaskCategory().Result);
list = model.results;
return list;
}
反序列化JSON 就像下面一样;
var model = JsonConvert.DeserializeObject<Model.RootObject>(TaskCategory().Result);
using System.Collections.Generic;
namespace SO1
{
public class Model
{
public class Result
{
public string list_name { get; set; }
public string display_name { get; set; }
public string list_name_encoded { get; set; }
public string oldest_published_date { get; set; }
public string newest_published_date { get; set; }
public string updated { get; set; }
}
public class RootObject
{
public string status { get; set; }
public string copyright { get; set; }
public int num_results { get; set; }
public List<Result> results { get; set; }
}
}
}
using Newtonsoft.Json;
using System.Collections.Generic;
using System.Threading.Tasks;
using System.Net.Http;
using System;
namespace SO1
{
public class GetCategory : IEntities
{
private String BaseUri;
public GetCategory(string BaseUri)
{
this.BaseUri = BaseUri;
}
private async Task<string> TaskCategory()
{
var httpClient = new HttpClient();
var parameters = new Dictionary<string, string>();
parameters["text"] = "text";
var response = await httpClient.GetStringAsync(BaseUri);
return response;
}
public List<Model.Result> BookCategory()
{
List<Model.Result> list = new List<Model.Result>();
var model = JsonConvert.DeserializeObject<Model.RootObject>(TaskCategory().Result);
list = model.results;
return list;
}
}
}
using System.Collections.Generic;
namespace SO1
{
public interface IEntities
{
List<Model.Result> BookCategory();
}
}
using System;
using System.Collections.Generic;
namespace SO1
{
class Program
{
static void Main(string[] args)
{
string BaseUri = "http://api.nytimes.com/svc/books/v3/lists/names.json?api-key=7bb034b7693d6f9753b2f68e00b98c78%3A16%3A73599437";
IEntities entity = new GetCategory(BaseUri);
List<Model.Result> listBookCategory = new List<Model.Result>();
listBookCategory = entity.BookCategory();
foreach (Model.Result r in listBookCategory)
{
Console.WriteLine();
Console.WriteLine("...List Name : " + r.list_name);
Console.WriteLine("...Display Name : " + r.display_name);
Console.WriteLine("...List Name Encoded : " + r.list_name_encoded);
Console.WriteLine("...Oldest Published Date : " + r.oldest_published_date);
Console.WriteLine("...Oldest Published Date : " + r.newest_published_date);
Console.WriteLine("...Updated : " + r.updated);
Console.WriteLine();
}
}
}
}
...List Name : Combined Print and E-Book Fiction
...Display Name : Combined Print & E-Book Fiction
...List Name Encoded : combined-print-and-e-book-fiction
...Oldest Published Date : 2011-02-13
...Oldest Published Date : 2015-12-27
...Updated : WEEKLY
...List Name : Combined Print and E-Book Nonfiction
...Display Name : Combined Print & E-Book Nonfiction
...List Name Encoded : combined-print-and-e-book-nonfiction
...Oldest Published Date : 2011-02-13
...Oldest Published Date : 2015-12-27
...Updated : WEEKLY
...List Name : Hardcover Fiction
...Display Name : Hardcover Fiction
...List Name Encoded : hardcover-fiction
...Oldest Published Date : 2008-06-08
...Oldest Published Date : 2015-12-27
...Updated : WEEKLY