从apify抓取器中获取标签的方法可以使用Web、Cheerio和Puppeteer这三个工具来实现。
下面是使用这三个工具从apify抓取器中获取标签的示例代码:
使用Web:
const Apify = require('apify');
const { utils: { log } } = Apify;
Apify.main(async () => {
const requestQueue = await Apify.openRequestQueue();
await requestQueue.addRequest({ url: 'https://example.com' });
const handlePageFunction = async ({ request, $ }) => {
const tags = $('tag-selector').text();
log.info(`Tags: ${tags}`);
};
const crawler = new Apify.CheerioCrawler({
requestQueue,
handlePageFunction,
});
await crawler.run();
});
使用Cheerio:
const Apify = require('apify');
const cheerio = require('cheerio');
const { utils: { log } } = Apify;
Apify.main(async () => {
const requestQueue = await Apify.openRequestQueue();
await requestQueue.addRequest({ url: 'https://example.com' });
const handlePageFunction = async ({ request, body }) => {
const $ = cheerio.load(body);
const tags = $('tag-selector').text();
log.info(`Tags: ${tags}`);
};
const crawler = new Apify.CheerioCrawler({
requestQueue,
handlePageFunction,
});
await crawler.run();
});
使用Puppeteer:
const Apify = require('apify');
const { utils: { log } } = Apify;
Apify.main(async () => {
const requestQueue = await Apify.openRequestQueue();
await requestQueue.addRequest({ url: 'https://example.com' });
const handlePageFunction = async ({ request, page }) => {
const tags = await page.$eval('tag-selector', element => element.textContent);
log.info(`Tags: ${tags}`);
};
const crawler = new Apify.PuppeteerCrawler({
requestQueue,
handlePageFunction,
});
await crawler.run();
});
以上代码中,我们使用了Apify提供的抓取器(CheerioCrawler和PuppeteerCrawler),并在handlePageFunction中使用相应的工具来获取标签的内容。具体的选择器和标签内容获取方法可以根据实际情况进行调整。
推荐的腾讯云相关产品和产品介绍链接地址:
请注意,以上推荐的腾讯云产品仅供参考,具体选择应根据实际需求和情况进行评估。
领取专属 10元无门槛券
手把手带您无忧上云