WebApiの呼び出し方法

public class Person

    {

        public long Id { get; set; }        public string Name { get; set; } 

        public int Age { get; set; } 

        public string Sex { get; set; } 

        public override string ToString()

        {            return $"Id={Id} Name={Name} Age={Age} Sex={Sex}";

        }

    }

class Program
   {
       static void Main(string[] args)
       {
           var client = new HttpClient();
           //基本的API URL
           client.BaseAddress = new Uri("http://localhost:22658/");
           //默认希望响应使用Json序列化(内容协商机制，我接受json格式的数据)
           client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json")); 
           //运行client接收程序
           Run(client);
           Console.ReadLine();
       }
       //client接收处理（都是异步的处理）
       static async void Run(HttpClient client)
       {
           //post 请求插入数据
           var result = await AddPerson(client);
           Console.WriteLine($"添加结果：{result}"); //添加结果：true
           
           //get 获取数据
           var person = await GetPerson(client);
           //查询结果：Id=1 Name=test Age=10 Sex=F
           Console.WriteLine($"查询结果：{person}"); 
           //put 更新数据
           result = await PutPerson(client);
           //更新结果：true
           Console.WriteLine($"更新结果：{result}"); 
           //delete 删除数据
           result = await DeletePerson(client);
           //删除结果：true
           Console.WriteLine($"删除结果：{result}"); 
       }
       
       //post
       static async Task<bool> AddPerson(HttpClient client)
       {
           //向Person发送POST请求，Body使用Json进行序列化
           return await client.PostAsJsonAsync("api/Person", new Person() { Age = 10, Id = 1, Name = "test", Sex = "F" }) 
                               //返回请求是否执行成功，即HTTP Code是否为2XX
                               .ContinueWith(x => x.Result.IsSuccessStatusCode);  
       }
       
       //get
       static async Task<Person> GetPerson(HttpClient client)
       {
           //向Person发送GET请求
           return await await client.GetAsync("api/Person/1") 
           //获取返回Body，并根据返回的Content-Type自动匹配格式化器反序列化Body内容为对象
                                    .ContinueWith(x => x.Result.Content.ReadAsAsync<Person>(                             
                   new List<MediaTypeFormatter>() {new JsonMediaTypeFormatter()/*这是Json的格式化器*/
                                                   ,new XmlMediaTypeFormatter()/*这是XML的格式化器*/}));
       }
       
       //put
       static async Task<bool> PutPerson(HttpClient client)
       {
           //向Person发送PUT请求，Body使用Json进行序列化
           return await client.PutAsJsonAsync("api/Person/1", new Person() { Age = 10, Id = 1, Name = "test1Change", Sex = "F" }) 
                               .ContinueWith(x => x.Result.IsSuccessStatusCode);  //返回请求是否执行成功，即HTTP Code是否为2XX
       }
       //delete
       static async Task<bool> DeletePerson(HttpClient client)
       {
           return await client.DeleteAsync("api/Person/1") //向Person发送DELETE请求
                              .ContinueWith(x => x.Result.IsSuccessStatusCode); //返回请求是否执行成功，即HTTP Code是否为2XX
       }
}