electron 给 webview 动态添加preload

1.electron webview 动态添加preload

 const mainWindow = new BrowserWindow({
    width: 1400,
    height: 670,
    show: false,
    menuBarVisible:false,
    ...(process.platform === 'linux' ? { icon } : {}),
    webPreferences: {
    },
  })

2.监听窗口will-attach-webview事件完成后，动态添加 webPreferences.preload

mainWindow.webContents.on('will-attach-webview', (e, webPreferences) => {
    webPreferences.sandbox = false
    webPreferences.contextIsolation = true

    webPreferences.preload = join(__dirname, '../preload/index.js')
})