playwright通过CDP远程连接浏览器并且控制

import asyncio
# Correct import: import async_playwright
from playwright.async_api import async_playwright

async def connect_and_control_playwright():
    # Correct usage: async with async_playwright() as p:
    async with async_playwright() as p:
        print("Playwright: Initializing...")
        try:
            # 连接到已开放 9222 端口的浏览器
            # 注意：Playwright 默认连接到 'ws://localhost:9222/devtools/browser'
            # 你可能需要根据实际情况调整 URL。
            # 通常，连接到 HTTP 端口即可，Playwright 会自动发现 WebSocket URL。
            browser = await p.chromium.connect_over_cdp("http://localhost:9222")
            print("Playwright: Successfully connected to browser via CDP.")

            # 获取默认的上下文（context）
            # 对于 connect_over_cdp，通常会有一个默认的浏览器上下文
            # 如果没有，则创建一个新的
            if browser.contexts:
                context = browser.contexts[0]
                print("Playwright: Using existing browser context.")
            else:
                context = await browser.new_context()
                print("Playwright: Created a new browser context.")

            # 尝试获取现有页面，如果存在则复用，否则打开新页面
            pages = context.pages
            if pages:
                page = pages[0] # 复用第一个现有页面
                print("Playwright: Reusing existing page.")
            else:
                page = await context.new_page() # 如果没有页面，则打开新页面
                print("Playwright: No existing pages found, opened a new page.")

            # 导航到指定 URL
            await page.goto("https://www.google.com")
            print(f"Playwright: Navigated to {page.url}")

            # 获取页面标题
            title = await page.title()
            print(f"Playwright: Page title is '{title}'")

            # 截图并保存
            await page.screenshot(path="playwright_screenshot.png")
            print("Playwright: Screenshot saved as 'playwright_screenshot.png'")

        except Exception as e:
            print(f"Playwright Error: {e}")
            print("Please ensure your Chrome browser is running with --remote-debugging-port=9222.")
            print("Example: google-chrome --remote-debugging-port=9222 --user-data-dir=/tmp/my-chrome-profile")
        finally:
            # 确保在任何情况下都尝试关闭浏览器连接
            if 'browser' in locals() and browser:
                await browser.close()
                print("Playwright: Disconnected from the browser.")

if __name__ == "__main__":
    asyncio.run(connect_and_control_playwright())