接口C# Post消息

using System;
using System.Net.Http;
using System.Threading.Tasks;

public interface IHttpPoster
{
    Task<string> PostMessage(string url, string message);
}

public class HttpPoster : IHttpPoster
{
    public async Task<string> PostMessage(string url, string message)
    {
        using (HttpClient client = new HttpClient())
        {
            var content = new StringContent(message);
            var response = await client.PostAsync(url, content);
            return await response.Content.ReadAsStringAsync();
        }
    }
}

public class Program
{
    public static async Task Main(string[] args)
    {
        string url = "https://example.com/api";
        string message = "Hello, World!";
        
        IHttpPoster httpPoster = new HttpPoster();
        string response = await httpPoster.PostMessage(url, message);
        
        Console.WriteLine(response);
    }
}