如何从C# Blazor WebAssembly的HttpClient中检索cookies

builder.Services.AddScoped(sp => new HttpClient { BaseAddress = new Uri(builder.HostEnvironment.BaseAddress) }
    .EnableIntercept(sp)
    .UseWebAssemblyHttpMessageHandler()
);

@inject HttpClient HttpClient

@code {
    private async Task GetCookies()
    {
        var cookies = await HttpClient.GetCookiesAsync();
        // 处理cookies
    }
}

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

namespace YourNamespace
{
    public static class HttpClientExtensions
    {
        public static async Task<string> GetCookiesAsync(this HttpClient httpClient)
        {
            var cookieContainer = new System.Net.CookieContainer();
            var handler = new HttpClientHandler { CookieContainer = cookieContainer };
            var client = new HttpClient(handler);
            client.DefaultRequestHeaders.Accept.Clear();
            client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

            var response = await client.GetAsync(httpClient.BaseAddress);
            response.EnsureSuccessStatusCode();

            var cookies = cookieContainer.GetCookies(httpClient.BaseAddress);
            var cookiesString = string.Empty;
            foreach (var cookie in cookies)
            {
                cookiesString += $"{cookie.Name}={cookie.Value}; ";
            }

            return cookiesString.TrimEnd(' ', ';');
        }
    }
}