Question

我正在尝试获取有关我正在进行的练习的stackoverflow上的问题总数，并且我坚持反序列化。

如果有人可以让我知道我需要做什么，我将不胜感激，或许可以提供一些可以帮助我的示例代码。

当我在控制台中运行它时，我收到错误 “反序列化类型对象时出错。遇到意外字符”这是一个向下指向的三角形......

这是我到目前为止所拥有的

using System;
using System.Threading.Tasks;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Web;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Json;


namespace cs_StackOverflowAPI 
{
    [DataContract(Namespace = "http://schemas.microsoft.com/search/local/ws/rest/v1")]
    public class Question
    {
        [DataMember(Name = "question_id")]
        public int Questions { get; set; }

    }

    [DataContract]
    public class ResourceSet
    {
        [DataMember(Name = "estimatedTotal")]

        public long EstimatedTotal { get; set; }
        [DataMember(Name = "resources")]
        public Question[] Resources { get; set; }
    }

    [DataContract]
    public class Response
    {

        [DataMember(Name = "statusCode")]
        public int StatusCode { get; set; }
        [DataMember(Name = "statusDescription")]
        public string StatusDescription { get; set; }
        [DataMember(Name = "authenticationResultCode")]
        public string AuthenticationResultCode { get; set; }
        [DataMember(Name = "errorDetails")]
        public string[] errorDetails { get; set; }
        [DataMember(Name = "traceId")]
        public string TraceId { get; set; }
        [DataMember(Name = "resourceSets")]
        public ResourceSet[] ResourceSets { get; set; }
    }



    class Program 
    {
        public string serverUrl = "https://api.stackexchange.com/";
        public HttpClient client = null;

        static void Main(string[] args)
        {
            try
            {
                string noOfQuestions = CreateRequest("questions");
                Response noOfQuestionsReponse = MakeRequest(noOfQuestions);
                ProcessResponse(noOfQuestionsReponse);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
                Console.Read();
            }

        }


        public static string CreateRequest(string queryString)
        {   
        string UrlRequest = "https://api.stackexchange.com/2.2/" +
                                 queryString +
                                 "?&site=stackoverflow";
            return (UrlRequest);
        }

        public static Response MakeRequest(string requestUrl)
        {
            try
            {
                HttpWebRequest request = WebRequest.Create(requestUrl) as HttpWebRequest;
                using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
                {
                    if (response.StatusCode != HttpStatusCode.OK)
                        throw new Exception(String.Format(
                        "Server error (HTTP {0}: {1}).",
                        response.StatusCode,
                        response.StatusDescription));
                    DataContractJsonSerializer jsonSerializer = new DataContractJsonSerializer(typeof(Response));
                    object objResponse = jsonSerializer.ReadObject(response.GetResponseStream());
                    Response jsonResponse
                    = objResponse as Response;
                    return jsonResponse;
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
                return null;
            }
        }

        static public void ProcessResponse(Response noOfQuestionsReponse)
        {

            // this is where the error occurs
            Console.WriteLine("Press any key to exit");
            Console.ReadKey();
        }


        public static long ToUnixTime(DateTime date)
        {
            var epoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
            return Convert.ToInt64((date.ToUniversalTime() - epoch).TotalSeconds);
        }
    }
}

Answer 1

返回压缩内容（特别是gzip）。如果可能，请告诉您的http客户端自动解压缩它：

request.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip,deflate");
request.AutomaticDecompression =
    DecompressionMethods.GZip | DecompressionMethods.Deflate;

下一个问题是：架构不匹配;问题在根目录的items中：

[DataContract]
public class Response
{
    [DataMember(Name ="items")]
    List<Question> questions { get;set; }
}

反序列化我在哪里错了

1 个答案: