c# - 向 Api 发出 Http 请求并转换为 json

Question

我的问题可能微不足道，但我花了将近 6 个小时来尝试解决问题。

public async Task<object> save() 
{
    var uri = "https://newsapi.org/v1/articles?source=talksport&apiKey=longKey";
    var httpClient = new HttpClient ();
    HttpResponseMessage res = await httpClient.GetAsync(uri);
    var data = await res.Content.ReadAsStreamAsync();

    // this is what I want to achieve like in python you can do something like this
    foreach(var item in data){
        Console.writeline(item.summary);
    }
    // end of arbitrary code
    return data;
}

我的问题是，我无法进行此转换以获取响应然后访问 json 数据。 在 python 中你可以做一些事情

r = request.get(apiUrl)
data = r.json()
for item in data:
   print(item.summary)

这就是我用 C# 努力实现的全部，任何帮助完成代码或解释。谢谢

Answer 1

尝试使用这样的东西:

安装 Newtonsoft.Json打包并添加using Newtonsoft.Json;

using (var request = new HttpRequestMessage()) {
    request.RequestUri = new Uri("https://newsapi.org/v1/articles?source=talksport&apiKey=longKey");
    request.Method = HttpMethod.Get;

    using (var response = await httpClient.SendAsync(request)) {
        string content = await response.Content.ReadAsStringAsync();

        var result = JsonConvert.DeserializeObject<IList<dynamic>>(content);

        foreach(var item in result){
           Console.writeline(item.summary);
        }
    }
}

来自评论

Then i get this "{\"vouchers\":[\"UN9NKK\",\"FYMFVS\",\"WV5AX7\",\"M2TJJ8\",‌​\"FBB9AL\",\"MBW8Z4\‌​"]}"

你可以创建一个新类

public class MyResponse { 
   public IEnumerable<string> Vouchers {get;set; } 
} 

然后

var response = JsonConvert.DeserializeObject<MyResponse>(content); 
foreach(var item in response.Vouchers){
     Console.WriteLine(item);
}