c# - ASP.NET - 模型对象列表的 API Url

Question

目前我正在通过 jQuery 进行 API 调用，我的问题是，是否可以在 C# 中进行此调用或将 API 调用的结果转换为 ASP.NET 模型对象列表？

这是我的模型

public class TeamStatsClass
{
        public int id { get; set; }
        public string name { get; set; }
        public string league { get; set; }
        public string division { get; set; }
}

这是我当前的 ajax 调用

$.ajax({
        url: "https://statsapi.web.nhl.com/api/v1/teams?sportId=1",
        success: function (data) {

            for (var team of data.teams) {

                console.log(team.name);

            }

        }
    });

更新

我把我的类(class)改成了这样:

public class StatsTeamsClass
    {
        public IEnumerable<Teams> teams { get; set; }
        public string copyright { get; set; }
    }
    public class Division
    {
        public int id { get; set; }
        public string name { get; set; }
        public string link { get; set; }
    }

    public class Teams
    {
        public int id { get; set; }
        public string name { get; set; }
        public string link { get; set; }
        public League league { get; set; }
        public Division division { get; set; }
    }

并创建了这个确实将结果放入模型对象的方法:

public async System.Threading.Tasks.Task<StatsTeamsClass> GetTeams()
{

            HttpClient Http = new HttpClient();
            var json = await Http.GetStringAsync("https://statsapi.web.nhl.com/api/v1/teams?sportId=1");
            StatsTeamsClass teams = JsonConvert.DeserializeObject<StatsTeamsClass>(json);

            return teams;
}

但是当我尝试在另一个 Controller 中调用这个方法时，它只是卡在那里，没有错误，什么也没有，我假设它会在一段时间后超时

public class HomeController : Controller
{

        APIController webService = new APIController();

        public ActionResult Index()
        {

            var item = webService.GetTeams().Result.teams;

            return View();
        }
}

(GetTeams() 在 Controller APIController 内部)

那么 A. 获取对象模型中 API 的结果然后调用这些结果的正确方法是什么？

Answer 1

Controller 操作也需要异步，以避免混合异步等待和阻塞调用，如 .Result 或 .Wait() 可能会导致死锁。

引用 Async/Await - Best Practices in Asynchronous Programming

public class HomeController : Controller {    
    APIController webService = new APIController();

    public async Task<ActionResult> Index() {    
        var model = await webService.GetTeams();
        var teams = model.teams;
        return View();
    }
}

假设 APIController 是一个实际的 ApiContoller

public class APIController : ApiController {

    //Your original code
    public async Task<StatsTeamsClass> GetTeams() {        
        HttpClient Http = new HttpClient();
        var json = await Http.GetStringAsync("https://statsapi.web.nhl.com/api/v1/teams?sportId=1");
        StatsTeamsClass teams = JsonConvert.DeserializeObject<StatsTeamsClass>(json);
        return teams;
    }

    //...
}

我建议不要像从 HomeController 那样直接调用 APIController，而是将 GetTeams() 方法提取到可重用服务中

public class WebService {
    static Lazy<HttpClient> http = new Lazy<HttpClient>();

    public async Task<T> GetAsync<T>(string url) {        
        var json = await http.Value.GetStringAsync(url);
        return JsonConvert.DeserializeObject<T>(json);
    }

    public Task<StatsTeamsClass> GetTeamsAsync() {        
        var url = "https://statsapi.web.nhl.com/api/v1/teams?sportId=1";
        return GetAsync<StatsTeamsClass>(url);
    }
}

引用 You're using HttpClient wrong

可以在 HomeController 中正确使用

public class HomeController : Controller {        
    public async Task<ActionResult> Index() {
        // Ideally web service should be injected but that topic
        // is outside of the scope of the question at the moment.
        var webService = new WebService();

        var model = await webService.GetTeamsAsync();
        var teams = model.teams;

        //...

        return View(teams);
    }
}

这里假设项目是混合的 Asp.Net MVC 和 Web Api 2+

Index.cshtml

@model IEnumerable<Teams>
@{
    ViewBag.Title = "Teams";
}
@if(Model != null && Model.Count() > 0) {
    @foreach (var @team in Model) {
        <p>@team.name</p>
    }
}