C# 实现简单的 HTTP 请求工具（POST 补充）

using System.Net.Http;
using System.Text;
using Newtonsoft.Json;
public class HttpHelper
{
    private static readonly HttpClient _httpClient = new HttpClient();
    // POST请求（提交JSON数据）
    public static async Task<TResponse> PostAsync<TRequest, TResponse>(string url, TRequest data)
    {
        try
        {
            string json = JsonConvert.SerializeObject(data);
            HttpContent content = new StringContent(json, Encoding.UTF8, "application/json");
            HttpResponseMessage response = await _httpClient.PostAsync(url, content);
            response.EnsureSuccessStatusCode();
            string responseJson = await response.Content.ReadAsStringAsync();
            return JsonConvert.DeserializeObject<TResponse>(responseJson);
        }
        catch (HttpRequestException ex)
        {
            Console.WriteLine($"HTTP请求错误: {ex.Message}");
            return default;
        }
        catch (Exception ex)
        {
            Console.WriteLine($"POST请求失败: {ex.Message}");
            return default;
        }
    }
    // 调用示例
    public static async Task TestPost()
    {
        var user = new { Name = "张三", Age = 25 };
        var result = await PostAsync<object, string>("https://httpbin.org/post", user);
        Console.WriteLine("POST响应结果: " + result);
    }
}