C#实现一个http请求的工具类

以下是一个简单的 C# HTTP 请求工具类的示例代码：

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

namespace HttpUtils
{
    public static class HttpHelper
    {
        public static async Task<string> SendGetRequestAsync(string url)
        {
            using (var client = new HttpClient())
            {
                HttpResponseMessage response = await client.GetAsync(url);

                if (response.IsSuccessStatusCode)
                {
                    string result = await response.Content.ReadAsStringAsync();
                    return result;
                }
                else
                {
                    throw new Exception($"HTTP GET request failed with status code {response.StatusCode}.");
                }
            }
        }

        public static async Task<string> SendPostRequestAsync(string url, HttpContent content)
        {
            using (var client = new HttpClient())
            {
                HttpResponseMessage response = await client.PostAsync(url, content);

                if (response.IsSuccessStatusCode)
                {
                    string result = await response.Content.ReadAsStringAsync();
                    return result;
                }
                else
                {
                    throw new Exception($"HTTP POST request failed with status code {response.StatusCode}.");
                }
            }
        }
    }
}

使用示例：

using System;
using System.Threading.Tasks;
using HttpUtils;

class Program
{
    static async Task Main(string[] args)
    {
        string response = await HttpHelper.SendGetRequestAsync("https://www.example.com");
        Console.WriteLine(response);
    }
}

以上代码实现了发起 GET 和 POST 请求的方法。你可以根据自己的需求进行修改和扩展。