96 lines
3.3 KiB
JavaScript
96 lines
3.3 KiB
JavaScript
const express = require('express');
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const cors = require('cors');
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const path = require('path');
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const app = express();
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const PORT = 3000;
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app.use(cors());
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app.use(express.static(path.join(__dirname, 'public')));
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const ACTIVITY_URL = 'https://www.szhdy.com/activities/default.html?method=activity&id=9';
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const REQUEST_HEADERS = {
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'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36',
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'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
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'Accept-Language': 'zh-CN,zh;q=0.9,en;q=0.8',
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'Connection': 'keep-alive',
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'Upgrade-Insecure-Requests': '1',
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};
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// 存储 Cookie
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let cachedCookies = '';
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let cookieExpiry = 0;
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// 从 set-cookie 响应头提取 Cookie
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function extractCookies(response) {
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const setCookieHeaders = response.headers.getSetCookie?.() || [];
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const cookies = setCookieHeaders.map(c => c.split(';')[0]).join('; ');
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return cookies;
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}
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// 获取有效 Cookie（过期或为空时重新获取）
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async function getValidCookies() {
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if (cachedCookies && Date.now() < cookieExpiry) {
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return cachedCookies;
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}
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console.log('[Cookie] 正在获取新的 Cookie...');
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const response = await fetch(ACTIVITY_URL, { headers: REQUEST_HEADERS, redirect: 'manual' });
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cachedCookies = extractCookies(response);
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// Cookie 有效期设为 1 小时（服务器 max-age=86400，保守取 1 小时）
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cookieExpiry = Date.now() + 3600 * 1000;
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console.log('[Cookie] 获取成功:', cachedCookies);
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return cachedCookies;
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}
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app.get('/api/activity', async (req, res) => {
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try {
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const cookies = await getValidCookies();
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const response = await fetch(ACTIVITY_URL, {
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headers: {
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...REQUEST_HEADERS,
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'Cookie': cookies,
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}
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});
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const html = await response.text();
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// 如果返回内容过短，可能 Cookie 失效，清除缓存并重试一次
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if (html.length < 1000) {
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console.log('[Cookie] 响应内容过短，尝试刷新 Cookie 重试...');
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cachedCookies = '';
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cookieExpiry = 0;
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const newCookies = await getValidCookies();
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const retryResponse = await fetch(ACTIVITY_URL, {
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headers: {
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...REQUEST_HEADERS,
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'Cookie': newCookies,
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}
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});
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const retryHtml = await retryResponse.text();
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// 更新重试后的 Cookie
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const retryCookies = extractCookies(retryResponse);
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if (retryCookies) {
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cachedCookies = retryCookies;
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cookieExpiry = Date.now() + 3600 * 1000;
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}
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return res.json({ success: true, html: retryHtml });
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}
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// 更新响应中的新 Cookie
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const newCookies = extractCookies(response);
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if (newCookies) {
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cachedCookies = newCookies;
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cookieExpiry = Date.now() + 3600 * 1000;
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}
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res.json({ success: true, html });
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} catch (error) {
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res.status(500).json({ success: false, error: error.message });
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}
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});
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app.listen(PORT, () => {
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console.log(`活动监控服务已启动: http://localhost:${PORT}`);
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});
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