Playwright Python 反检测（反爬）完整实战指南
适用于：电商上传 / 自动化操作 / 反风控场景
技术栈：Python + Playwright
一、基础环境
pip install playwright
playwright install
二、核心反检测方案
1. 去除 webdriver 标识
from playwright.async_api import async_playwright
async def run():
async with async_playwright() as p:
browser = await p.chromium.launch(headless=False)
context = await browser.new_context()
await context.add_init_script("""
Object.defineProperty(navigator, 'webdriver', {
get: () => false,
});
""")
page = await context.new_page()
await page.goto("https://example.com")
import asyncio
asyncio.run(run())
2. 伪装浏览器环境
context = await browser.new_context(
user_agent="Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 Chrome/120 Safari/537.36",
locale="en-US",
viewport={"width": 1280, "height": 800}
)
3. 注入指纹（plugins / languages）
await context.add_init_script("""
Object.defineProperty(navigator, 'plugins', {
get: () => [1,2,3,4],
});
Object.defineProperty(navigator, 'languages', {
get: () => ['en-US','en'],
});
""")
4. 行为模拟（关键）
鼠标轨迹 + 延迟
import random
await page.mouse.move(100, 200, steps=20)
await page.wait_for_timeout(500 + random.randint(0, 1000))
await page.click("#btn")
滚动页面
await page.mouse.wheel(0, 500)
5. 使用代理 IP
browser = await p.chromium.launch(
proxy={
"server": "http://ip:port",
"username": "xxx",
"password": "xxx"
}
)
6. 持久化浏览器（强烈推荐）
context = await p.chromium.launch_persistent_context(
user_data_dir="./user_data",
headless=False
)
三、完整实战模板（推荐直接用）
import asyncio
import random
from playwright.async_api import async_playwright
async def human_delay(a=1000, b=3000):
await asyncio.sleep(random.uniform(a/1000, b/1000))
async def run():
async with async_playwright() as p:
context = await p.chromium.launch_persistent_context(
user_data_dir="./user_data",
headless=False,
viewport={"width": 1280, "height": 800},
locale="en-US",
user_agent="Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 Chrome/120 Safari/537.36"
)
page = await context.new_page()
# 注入反检测脚本
await context.add_init_script("""
Object.defineProperty(navigator, 'webdriver', { get: () => false });
Object.defineProperty(navigator, 'plugins', { get: () => [1,2,3] });
Object.defineProperty(navigator, 'languages', { get: () => ['en-US','en'] });
""")
await page.goto("https://example.com")
# 模拟人类行为
await human_delay()
await page.mouse.move(200, 300, steps=30)
await human_delay()
await page.mouse.wheel(0, 600)
await human_delay()
await page.click("text=Login")
await human_delay(2000, 5000)
# 输入
await page.fill("#username", "test")
await human_delay()
await page.fill("#password", "123456")
await human_delay()
await page.click("#submit")
await human_delay(3000, 6000)
await context.close()
asyncio.run(run())
四、防封核心策略
1. 账号隔离
- 一个账号 = 一个 IP
- 一个账号 = 一个浏览器目录
2. 控制频率
await page.wait_for_timeout(3000 + random.randint(0, 5000))
3. 模拟真实路径
错误：
- 直接进入发布页
正确：
- 首页 → 浏览 → 搜索 → 停留 → 操作
4. 半自动方案（最稳）
推荐：
- 自动填写
- 人工点击提交
五、进阶建议
- 使用住宅 IP
- 不要批量并发跑
- 不要同一 IP 多账号
- 每个账号保持独立行为轨迹
六、总结
Playwright 反检测核心三点：
👉 只要做到这三点，稳定性会大幅提升
