API中的错误帖子

Question

因此，您在C＃中构建此文件，试图发布到本地运行的API中，GET正常工作，但是当我尝试发布时，它告诉我：

Content type 'application/x-www-form-urlencoded;charset=utf-8' not supported

，即使我使用了client.DefaultRequestHeaders.Accept.new MediaTypeWithQualityHeaderValue("application/json"));并且我认为这将有助于我将其定义为json。但是，对于C＃和JSON来说，这是一种新事物，因此可能会有很多东西我可以编写得更短或更短。

using Newtonsoft.Json;
using System;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Threading.Tasks;
using Flurl.Http;

namespace HoloChessAPIListener
{
    public class Move
    {
        public long moveNr { get; set; }
        public long gameId { get; set; }
        public bool playerWhite { get; set; }
        public string chessNotation { get; set; }
    }

    class Program
    {
        static HttpClient client = new HttpClient();
        static string path = "http://localhost:8080";

        static void ShowMove(Move move)
        {
            Console.WriteLine($"MoveNr: {move.moveNr}\tGameId: " +
                $"{move.gameId}\tPlayerWhite: {move.playerWhite}\tChessNotation: {move.chessNotation}");
        }

        static async Task<string> CreateMoveAsync(Move move)
        {
            var json = JsonConvert.SerializeObject(move, Formatting.Indented);
            var pathString = path + "/games/1/moves";
            var responseString = await pathString
                .PostUrlEncodedAsync(json)
                .ReceiveString();

            return responseString;
        }

        static async Task<Move[]> GetMoveAsync(string path1)
        {
            //Get Json
            var json = await client.GetStringAsync(path1);

            //Handle Json 
            Move[] move = JsonConvert.DeserializeObject<Move[]>(json);

            return move;
        }

        static void Main()
        {
            RunAsync().GetAwaiter().GetResult();
        }

        static async Task RunAsync()
        {
            client.BaseAddress = new Uri("http://localhost:8080");
            client.DefaultRequestHeaders.Accept.Clear();
            client.DefaultRequestHeaders.Accept.Add(
                new MediaTypeWithQualityHeaderValue("application/json"));

            try
            {
                Move move1 = new Move()
                {
                    moveNr = 1,
                    gameId = 1,
                    playerWhite = true,
                    chessNotation = "CH1"
                };
                var url = await CreateMoveAsync(move1);
                Console.WriteLine($"Created at {url}");

                Move[] move;
                // Get the move
                move = await GetMoveAsync(url);
                ShowMove(move[0]);

            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }

            Console.ReadLine();
        }
    }
}

如果我在浏览器中调用API，这就是API给我的：

[{"moveNr":1,"gameId":4,"playerWhite":true,"chessNotation":"Nc6"},{"moveNr":2,"gameId":4,"playerWhite":false,"chessNotation":"Nc7"},{"moveNr":3,"gameId":4,"playerWhite":true,"chessNotation":"Nc8"}]