我正在寻找IHttpClientFactory -> HttpMethod.Post示例

using System;
using System.Net.Http;
using System.Threading.Tasks;
using Microsoft.Extensions.DependencyInjection;

public class HttpClientExample
{
    private readonly IHttpClientFactory _httpClientFactory;

    public HttpClientExample(IHttpClientFactory httpClientFactory)
    {
        _httpClientFactory = httpClientFactory;
    }

    public async Task<string> PostDataAsync(string url, string data)
    {
        var httpClient = _httpClientFactory.CreateClient();

        var request = new HttpRequestMessage(HttpMethod.Post, url);
        request.Content = new StringContent(data);

        var response = await httpClient.SendAsync(request);

        if (response.IsSuccessStatusCode)
        {
            return await response.Content.ReadAsStringAsync();
        }

        throw new Exception($"POST request failed with status code: {response.StatusCode}");
    }
}

// 在Startup类的ConfigureServices方法中注册IHttpClientFactory
public void ConfigureServices(IServiceCollection services)
{
    services.AddHttpClient();
    // 其他服务的注册...
}