前言

有些场景在使用的时候，会弹出一些权限框，比如麦克风和摄像头等，通过监听alert 是没法捕获的。
正确做法是给浏览器设置默认允许麦克风和摄像头等权限，不让弹窗出来。使用context 的 grant_permissions 方法加权限。

权限框

弹窗示例

这种弹窗是权限窗，不是alert

解决办法

context 有个 grant_permissions 方法可以加权限，常见的权限如下

    def grant_permissions(
        self, permissions: typing.List[str], *, origin: typing.Optional[str] = None
    ) -> None:
        """BrowserContext.grant_permissions

        Grants specified permissions to the browser context. Only grants corresponding permissions to the given origin if
        specified.

        Parameters
        ----------
        permissions : List[str]
            A permission or an array of permissions to grant. Permissions can be one of the following values:
            - `'geolocation'`
            - `'midi'`
            - `'midi-sysex'` (system-exclusive midi)
            - `'notifications'`
            - `'camera'`
            - `'microphone'`
            - `'background-sync'`
            - `'ambient-light-sensor'`
            - `'accelerometer'`
            - `'gyroscope'`
            - `'magnetometer'`
            - `'accessibility-events'`
            - `'clipboard-read'`
            - `'clipboard-write'`
            - `'payment-handler'`
        origin : Union[str, None]
            The [origin] to grant permissions to, e.g. "https://example.com".
        """

添加'camera', 'microphone' 权限示例

from playwright.sync_api import sync_playwright
# 上海悠悠 wx:283340479
# blog:https://www.cnblogs.com/yoyoketang/


with sync_playwright() as playwright:
    browser = playwright.chromium.launch(headless=False)
    context = browser.new_context()
    # 设置允许 'camera', 'microphone' 权限
    context.grant_permissions(['camera', 'microphone'])
    page = context.new_page()
    page.goto('https://www.demo.com/demo.html')

还有个清空权限的方法

context.clear_permissions()

文章转自：https://www.cnblogs.com/yoyoketang/p/17359944.html