Playwright Cho Web Scraping: Tốt Hơn Selenium?

Playwright Cho Web Scraping: Tốt Hơn Selenium?

Playwright là framework browser automation mới từ Microsoft. So sánh với Selenium và hướng dẫn dùng cho web scraping.

Playwright vs Selenium

Cài Đặt

# Python
pip install playwright
playwright install

# Node.js
npm install playwright

Python Example

from playwright.sync_api import sync_playwright

with sync_playwright() as p:
    browser = p.chromium.launch(headless=True)
    page = browser.new_page()
    
    page.goto("https://example.com")
    
    # Auto-wait cho selector
    title = page.locator("h1").text_content()
    print(title)
    
    # Screenshot
    page.screenshot(path="screenshot.png")
    
    browser.close()

Async Version

import asyncio
from playwright.async_api import async_playwright

async def main():
    async with async_playwright() as p:
        browser = await p.chromium.launch()
        page = await browser.new_page()
        await page.goto("https://example.com")
        
        # Multiple elements
        links = await page.locator("a").all()
        for link in links:
            href = await link.get_attribute("href")
            print(href)
        
        await browser.close()

asyncio.run(main())

Playwright Với Proxy

browser = p.chromium.launch(
    headless=True,
    proxy={
        "server": "http://proxy.vinaproxy.com:8080",
        "username": "user",
        "password": "pass"
    }
)

Stealth Mode

# Cài playwright-stealth
pip install playwright-stealth

from playwright.sync_api import sync_playwright
from playwright_stealth import stealth_sync

with sync_playwright() as p:
    browser = p.chromium.launch()
    page = browser.new_page()
    stealth_sync(page)  # Apply stealth
    page.goto("https://protected-site.com")

Ưu Điểm Playwright

• Auto-wait: Không cần explicit waits
• Network interception: Block images, modify requests
• Multiple contexts: Parallel browsing
• Tracing: Debug với trace viewer
• Video recording: Record sessions

Khi Nào Dùng Playwright?

• JavaScript-heavy websites
• SPA (React, Vue, Angular)
• Sites cần login/interaction
• Khi Selenium quá chậm

VinaProxy + Playwright

• Bypass geo-restrictions
• Rotate IPs cho large-scale scraping
• Giá chỉ $0.5/GB

Dùng Thử Ngay →