如何爬取 Coinpaprika：加密货币市场数据提取指南

from playwright.sync_api import sync_playwright

def scrape_coinpaprika():
    with sync_playwright() as p:
        # 启动无头浏览器
        browser = p.chromium.launch(headless=True)
        page = browser.new_page()
        # 导航到代币页面
        page.goto('https://coinpaprika.com/coin/btc-bitcoin/')
        # 等待 JS 渲染价格元素
        page.wait_for_selector('.cp-price-value')
        data = {
            'title': page.title(),
            'price': page.inner_text('.cp-price-value'),
            'market_cap': page.inner_text('text=Market Cap >> xpath=..')
        }
        print(data)
        browser.close()

if __name__ == '__main__':
    scrape_coinpaprika()

import scrapy

class CoinpaprikaSpider(scrapy.Spider):
    name = 'coinpaprika'
    start_urls = ['https://coinpaprika.com/all-coins/']

    def parse(self, response):
        # 遍历代币表格行
        for row in response.css('table.cp-table tbody tr'):
            yield {
                'rank': row.css('td.rank::text').get(),
                'name': row.css('td.name a::text').get().strip(),
                'price': row.css('td.price span::text').get(),
                'market_cap': row.css('td.market-cap::text').get()
            }
        # 处理简单的页码翻页
        next_page = response.css('a.next-page::attr(href)').get()
        if next_page:
            yield response.follow(next_page, self.parse)

const puppeteer = require('puppeteer');

(async () => {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  try {
    // 导航并等待网络活动稳定
    await page.goto('https://coinpaprika.com/coin/btc-bitcoin/', { waitUntil: 'networkidle2' });
    const coinData = await page.evaluate(() => {
      return {
        name: document.querySelector('h1')?.innerText.trim(),
        price: document.querySelector('.cp-price-value')?.innerText.trim(),
        volume24h: document.querySelector('text/Volume (24h)')?.parentElement?.innerText
      };
    });
    console.log(coinData);
  } catch (error) {
    console.error('爬取错误:', error);
  } finally {
    await browser.close();
  }
})();