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())