c# - 如何读取包含 Datetime 类型的 BaseHttpActionResult 的响应

Question

我收到了使用 HTTP 协议(protocol)的客户端服务的 C# 代码。我需要添加一个返回 Datetime 类型的新操作，因此根据我在网上找到的内容(不确定我所做的是否正确)，我扩展了一个已经存在的 BaseHttpActionResult 类:

public BaseHttpActionResult(HttpStatusCode code, DateTime content)
{
    _code = code;
    _content = content;
}

public Task<HttpResponseMessage> ExecuteAsync(CancellationToken cancellationToken)
{
    var response = new HttpResponseMessage
    {
        StatusCode = _code,
        Content = new ObjectContent(typeof(DateTime), _content, new JsonMediaTypeFormatter())
    };

    return Task.FromResult(response);
}

服务添加这个 Action :

[Route("StatusUpdate")]
[HttpGet]
public IHttpActionResult StatusUpdate()
{
    return new BaseHttpActionResult(HttpStatusCode.OK, DateTime.Today);
}

和客户端请求:

public class HttpRequestsHandler
{
    public static DateTime HttpGet(string requestUrl)
    {
        using (var handler = new WebRequestHandler())
        {
            handler.ServerCertificateValidationCallback = (sender, certificate, chain, errors) => true;

            using (var httpClient = new HttpClient(handler)
            {
                BaseAddress = new Uri(requestUrl),
                Timeout = Timeout.InfiniteTimeSpan
            })
            {
                using (var response = httpClient.GetAsync(requestUrl).Result)
                {
                    if (response.StatusCode != HttpStatusCode.OK)
                    {
                        var errorMessage = string.Format("HttpRequestTask: Request failed with status {0} for URL: {1}", response.StatusCode, requestUrl);
                        throw new HttpException(errorMessage, (int)response.StatusCode);
                    }
                    response.???????
                }
            }
        }
    }
}

问题是，如何从响应中读取 Datetime 值？我在网上看到有名为Content和Headers的方法和几个例子，但是我没看懂怎么用。。。

欢迎任何意见。

Answer 1

过于复杂的事情。如果您只需要返回来自 Web API 端点的日期时间，则使用现有功能

[Route("StatusUpdate")]
[HttpGet]
public IHttpActionResult StatusUpdate() {
    return Ok(DateTime.Today);
}

至于获取响应，使用可用的扩展方法将响应转换为您想要的类型。

var result = response.Content.ReadAsAsync<DateTime>().Result;
return result;

应考虑使用强类型模型。

public class StatusUpdateResponse {
    public DataTime Timestamp { get; set; }
}

这导致将操作更新为...

[Route("StatusUpdate")]
[HttpGet]
public IHttpActionResult StatusUpdate() {
    return Ok(new StatusUpdateResponse { Timestamp = DateTime.Today });
}

和

var model = response.Content.ReadAsAsync<StatusUpdateResponse>().Result
return model.Timestamp;