asp.net-mvc - 使用WEB API时，如何从POST的HttpResponseMessage中提取内容？

Question

相当典型的CRUD操作将导致对象的ID设置一旦持久化。

因此，如果我在 Controller 上有Post方法，该方法接受一个对象(说是JSON序列化)，并返回一个HttpStatsCode Created和Content设置为同一对象的HttpResponseMessage，Id从null更新为整数，那么我该如何使用HttpClient那个ID值？

这可能很简单，但我所看到的只是System.Net.Http.StreamContent。仅从post方法返回Int更好吗？

谢谢。

更新(以下回答):

一个有效的例子...

namespace TryWebAPI.Models {
    public class YouAreJoking {
        public int? Id { get; set; }
        public string ReallyRequiresFourPointFive { get; set; }
    }
}

namespace TryWebAPI.Controllers {
    public class RyeController : ApiController {
        public HttpResponseMessage Post([FromBody] YouAreJoking value) {
            //Patience simulated
            value.Id = 42;

            return new HttpResponseMessage(HttpStatusCode.Created) {
                Content = new ObjectContent<YouAreJoking>(value,
                            new JsonMediaTypeFormatter(),
                            new MediaTypeWithQualityHeaderValue("application/json"))
            };
        }
    }
}

namespace TryWebApiClient {
    internal class Program {
        private static void Main(string[] args) {
            var result = CreateHumour();
            Console.WriteLine(result.Id);
            Console.ReadLine();
        }

        private static YouAreJoking CreateHumour() {
            var client = new HttpClient();
            var pennyDropsFinally = new YouAreJoking { ReallyRequiresFourPointFive = "yes", Id = null };

            YouAreJoking iGetItNow = null;
            var result = client
                .PostAsJsonAsync("http://localhost:1326/api/rye", pennyDropsFinally)
                .ContinueWith(x => {
                                var response = x.Result;
                                var getResponseTask = response
                                    .Content
                                    .ReadAsAsync<YouAreJoking>()
                                    .ContinueWith<YouAreJoking>(t => {
                                        iGetItNow = t.Result;
                                        return iGetItNow;
                                    }
                );

                Task.WaitAll(getResponseTask);
                return x.Result;
            });

            Task.WaitAll(result);
            return iGetItNow;
        }
    }
}

似乎Node.js受到了启发。

Answer 1

您可以使用ReadAsAsync<T>
.NET 4(您也可以不进行继续操作)

var resultTask = client.PostAsJsonAsync<MyObject>("http://localhost/api/service",new MyObject()).ContinueWith<HttpResponseMessage>(t => {
    var response = t.Result;
    var objectTask = response.Content.ReadAsAsync<MyObject>().ContinueWith<Url>(u => {
        var myobject = u.Result;
        //do stuff 
    });
});

.NET 4.5

    var response = await client.PostAsJsonAsync<MyObject>("http://localhost/api/service", new MyObject());
    var myobject = await response.Content.ReadAsAsync<MyObject>();