129 lines
3.8 KiB
JavaScript
129 lines
3.8 KiB
JavaScript
/**
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* 每日爬取主脚本
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* 执行截图 + 数据获取 + 数据提取
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*/
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const { chromium } = require('playwright');
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const fs = require('fs');
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const fsp = require('fs/promises');
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const path = require('path');
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const BASE_DIR = path.resolve(process.env.BASE_DIR || process.cwd());
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const PIC_DIR = path.join(BASE_DIR, 'pic');
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const DATA_DIR = path.join(BASE_DIR, 'data');
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const TARGET_URL = 'http://bjjs.zjw.beijing.gov.cn/eportal/ui?pageId=307749';
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function formatDate(date) {
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const year = date.getFullYear();
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const month = String(date.getMonth() + 1).padStart(2, '0');
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const day = String(date.getDate()).padStart(2, '0');
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return `${year}-${month}-${day}`;
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}
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// 口径调整：当天执行时，落地前一天的数据
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function getDataDate() {
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const date = new Date();
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date.setDate(date.getDate() - 1);
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return formatDate(date);
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}
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// 主函数
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async function main() {
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const dataDate = getDataDate();
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console.log('==========================================');
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console.log(`开始爬取（落地日期）: ${dataDate}`);
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console.log(`目标URL: ${TARGET_URL}`);
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console.log('==========================================\n');
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const picPath = path.join(PIC_DIR, `${dataDate}.png`);
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const dataPath = path.join(DATA_DIR, `${dataDate}.json`);
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// 确保输出目录存在
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if (!fs.existsSync(PIC_DIR)) {
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fs.mkdirSync(PIC_DIR, { recursive: true });
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}
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if (!fs.existsSync(DATA_DIR)) {
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fs.mkdirSync(DATA_DIR, { recursive: true });
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}
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const browser = await chromium.launch({
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headless: true,
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args: ['--no-sandbox', '--disable-setuid-sandbox']
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});
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try {
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const context = await browser.newContext({
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viewport: { width: 1920, height: 1080 }
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});
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const page = await context.newPage();
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// 设置超时
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page.setDefaultTimeout(60000);
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page.setDefaultNavigationTimeout(60000);
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// 访问页面
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await page.goto(TARGET_URL, {
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waitUntil: 'networkidle',
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timeout: 60000
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});
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// 等待页面加载完成
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await page.waitForLoadState('domcontentloaded');
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// 额外等待3秒确保动态内容加载
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await page.waitForTimeout(3000);
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// 截图
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await page.screenshot({
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path: picPath,
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fullPage: true
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});
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console.log(` ✓ 截图已保存: ${picPath}`);
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for (const p of ['define.js', 'extract.js']) {
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const injectJsPath = path.join(BASE_DIR, 'public', p);
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const injectJsContent = await fsp.readFile(injectJsPath, 'utf-8');
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await page.addScriptTag({ content: injectJsContent });
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}
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console.log(' ✓ 数据提取脚本已注入');
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// 获取页面文本内容
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const data = await page.evaluate(() => {
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return JSON.stringify(extractData());
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});
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console.log(' ✓ 数据已提取');
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const content = JSON.stringify({
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date: dataDate,
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timestamp: Date.now(),
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source: TARGET_URL,
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data: JSON.parse(data)
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}, null, 2);
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// 保存原始内容
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await Bun.write(dataPath, content);
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console.log(`\n ✓ 数据已保存: ${dataPath}`);
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} catch (error) {
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console.error(` ✗ 操作失败: ${error.message}`);
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process.exit(1);
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} finally {
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await browser.close();
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}
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console.log('\n==========================================');
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console.log(`爬取完成（落地日期）: ${dataDate}`);
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console.log(`截图文件: ${picPath}`);
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console.log(`数据文件: ${dataPath}`);
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console.log('==========================================');
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}
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main().catch(err => {
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console.error('执行失败:', err);
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process.exit(1);
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});
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