这个文件引用 Microsoft.Playwright 的 IPlaywright/IBrowser/IBrowserContext/IPage 类型，但项目 csproj 里没这个 NuGet 依赖，dotnet publish 直接报 CS0246。 feature 分支上无此文件（服务已重构为 DouyinCookieService，扫码登录改走 lib/ 目录下的独立 Playwright 脚本）。main 上没有其他 .cs 文件引用它 → 纯孤儿 残留，删除。 Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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yuming
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using System.Collections.Concurrent;
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using Microsoft.Playwright;
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namespace dy.net.service
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{
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public class DyQrCodeService
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{
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private static readonly ConcurrentDictionary<string, QrSession> _sessions = new();
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private class QrSession
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{
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public IPlaywright Playwright { get; set; }
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public IBrowser Browser { get; set; }
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public IBrowserContext Context { get; set; }
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public IPage Page { get; set; }
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public DateTime CreatedAt { get; set; } = DateTime.Now;
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public string FinalCookies { get; set; }
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public string SecUserId { get; set; }
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}
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private const string LoginUrl = "https://creator.douyin.com/creator-micro/login";
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// QR 码图片的 class 名含 qrcode_img（后缀随版本变化，用属性选择器匹配）
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private const string QrSelector = "img[class*='qrcode_img']";
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public async Task<(string token, string qrBase64)> GetQrCodeAsync()
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{
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CleanExpiredSessions();
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var playwright = await Playwright.CreateAsync();
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var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions
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{
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Headless = true,
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Args = new[] { "--no-sandbox", "--disable-setuid-sandbox", "--disable-dev-shm-usage" }
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});
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var context = await browser.NewContextAsync(new BrowserNewContextOptions
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{
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UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36"
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});
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var page = await context.NewPageAsync();
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await page.GotoAsync(LoginUrl, new PageGotoOptions { Timeout = 15000 });
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await page.WaitForSelectorAsync(QrSelector, new PageWaitForSelectorOptions { Timeout = 10000 });
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// img.src 已经是 data:image/png;base64,... 直接取用
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var src = await page.EvaluateAsync<string>($"() => document.querySelector(\"{QrSelector}\").src");
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var qrBase64 = src.Replace("data:image/png;base64,", "");
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var token = Guid.NewGuid().ToString("N");
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_sessions[token] = new QrSession
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{
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Playwright = playwright,
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Browser = browser,
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Context = context,
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Page = page
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};
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return (token, qrBase64);
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}
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public async Task<(int status, string cookies, string secUserId)> CheckStatusAsync(string token)
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{
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if (!_sessions.TryGetValue(token, out var session))
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return (-1, null, null);
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if (DateTime.Now - session.CreatedAt > TimeSpan.FromMinutes(5))
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{
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await CloseSessionAsync(token, session);
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return (-1, null, null);
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}
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// 已经登录过，直接返回缓存
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if (session.FinalCookies != null)
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return (3, session.FinalCookies, session.SecUserId);
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var url = session.Page.Url;
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// 还在登录页
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if (url.Contains("/creator-micro/login") || url.Contains("sso.douyin.com"))
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{
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// 判断是否已扫码（页面出现"确认"或"已扫码"文字）
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var scanned = await session.Page.EvaluateAsync<bool>(
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"() => { const t = document.body.innerText; return t.includes('已扫码') || t.includes('确认登录'); }"
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);
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return (scanned ? 2 : 1, null, null);
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}
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// URL 已离开登录页，说明登录成功
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var browserCookies = await session.Context.CookiesAsync(new[]
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{
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"https://creator.douyin.com",
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"https://www.douyin.com",
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"https://sso.douyin.com"
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});
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var cookieStr = string.Join("; ", browserCookies.Select(c => $"{c.Name}={c.Value}"));
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// 尝试从页面获取 sec_user_id
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var secUserId = await GetSecUserIdAsync(session.Page);
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session.FinalCookies = cookieStr;
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session.SecUserId = secUserId;
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// 登录完成后关闭浏览器释放资源
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_ = Task.Run(async () => await CloseSessionAsync(token, session));
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return (3, cookieStr, secUserId);
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}
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public (string cookies, string secUserId) GetSessionResult(string token)
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{
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if (_sessions.TryGetValue(token, out var session))
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return (session.FinalCookies ?? "", session.SecUserId ?? "");
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return ("", "");
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}
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public void RemoveSession(string token)
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{
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if (_sessions.TryRemove(token, out var session))
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_ = Task.Run(async () => await CloseSessionAsync(token, session));
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}
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private static async Task<string> GetSecUserIdAsync(IPage page)
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{
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try
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{
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// 从页面 URL 或 API 提取 sec_user_id
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var resp = await page.EvaluateAsync<string>(
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"async () => { const r = await fetch('/web/api/userinfo/'); const j = await r.json(); return j?.data?.sec_uid || j?.sec_uid || ''; }"
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);
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return resp ?? "";
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}
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catch
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{
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return "";
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}
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}
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private static async Task CloseSessionAsync(string token, QrSession session)
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{
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_sessions.TryRemove(token, out _);
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try { await session.Browser?.CloseAsync(); } catch { }
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try { session.Playwright?.Dispose(); } catch { }
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}
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private static void CleanExpiredSessions()
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{
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var expired = _sessions
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.Where(kv => DateTime.Now - kv.Value.CreatedAt > TimeSpan.FromMinutes(6))
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.ToList();
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foreach (var kv in expired)
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_ = Task.Run(async () => await CloseSessionAsync(kv.Key, kv.Value));
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}
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}
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}
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