个人笔记

2 分钟阅读

默认情况下会自动下载chromium浏览器

设置指定的本地浏览器

示例

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	path := "/usr/bin/google-chrome"
	userDataDir := "/home/lx/.config/google-chrome"

	u := launcher.New().
		Bin(path).
		Headless(false).
		Set("window-size", "1920,1080").
		Set("user-data-dir", userDataDir). // 加载用户配置
		MustLaunch()

	// 使用 Rod 连接到本地 Chrome
	browser := rod.New().ControlURL(u).MustConnect()

	// 打开 GitHub 首页
	page := browser.MustPage("https://github.com/search?q=golang")
	// 设置窗口大小为 1920x1080
	page.MustSetViewport(1920, 1080, 1, false)

通过自动查找本地浏览器

示例

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	path, _ := launcher.LookPath()
	userDataDir := "/home/lx/.config/google-chrome"

	u := launcher.New().
		Bin(path).
		Headless(false).
		Set("window-size", "1920,1080").
		Set("user-data-dir", userDataDir). // 加载用户配置
		MustLaunch()

	// 使用 Rod 连接到本地 Chrome
	browser := rod.New().ControlURL(u).MustConnect()

	// 打开 GitHub 首页
	page := browser.MustPage("https://github.com/search?q=golang")
	// 设置窗口大小为 1920x1080
	page.MustSetViewport(1920, 1080, 1, false)

launcher.LookPath函数的源码如下：

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// LookPath searches for the browser executable from often used paths on current operating system.
func LookPath() (found string, has bool) {
	list := map[string][]string{
		"darwin": {
			"/Applications/Google Chrome.app/Contents/MacOS/Google Chrome",
			"/Applications/Chromium.app/Contents/MacOS/Chromium",
			"/Applications/Microsoft Edge.app/Contents/MacOS/Microsoft Edge",
			"/Applications/Google Chrome Canary.app/Contents/MacOS/Google Chrome Canary",
			"/usr/bin/google-chrome-stable",
			"/usr/bin/google-chrome",
			"/usr/bin/chromium",
			"/usr/bin/chromium-browser",
		},
		"linux": {
			"chrome",
			"google-chrome",
			"/usr/bin/google-chrome",
			"microsoft-edge",
			"/usr/bin/microsoft-edge",
			"chromium",
			"chromium-browser",
			"/usr/bin/google-chrome-stable",
			"/usr/bin/chromium",
			"/usr/bin/chromium-browser",
			"/snap/bin/chromium",
			"/data/data/com.termux/files/usr/bin/chromium-browser",
		},
		"openbsd": {
			"chrome",
			"chromium",
		},
		"windows": append([]string{"chrome", "edge"}, expandWindowsExePaths(
			`Google\Chrome\Application\chrome.exe`,
			`Chromium\Application\chrome.exe`,
			`Microsoft\Edge\Application\msedge.exe`,
		)...),
	}[runtime.GOOS]

	for _, path := range list {
		var err error
		found, err = exec.LookPath(path)
		has = err == nil
		if has {
			break
		}
	}

	return
}

在遍历以上函数中路径切片时，若能找到浏览器，则不再进一步进行查找。也就是说，路径优先级有很大关系！

清除指定网站的Cookies

示例

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	browser := rod.New().MustConnect()
	defer browser.MustClose()

	// 打开页面
	page := browser.MustPage("https://baidu.com")
	page.MustWaitLoad()

	// 使用 JavaScript 获取 cookies
	cookies1 := page.MustEval(`() => document.cookie`).String()
	fmt.Println("Cookies:", cookies1)

	// 获取当前页面的 cookies
	cookies, err := proto.NetworkGetCookies{
		Urls: []string{"https://baidu.com"},
	}.Call(page)
	if err != nil {
		panic(err)
	}
	// 打印当前页面的 cookies
	for _, cookie := range cookies.Cookies {
		fmt.Printf("1 Name: %s, Value: %s, Domain: %s\n", cookie.Name, cookie.Value, cookie.Domain)
	}
	// 清除所有 cookies
	err = proto.NetworkClearBrowserCookies{}.Call(page)
	if err != nil {
		panic(err)
	}

	println("Cookies cleared")

	cookies, err = proto.NetworkGetCookies{
		Urls: []string{"https://baidu.com"},
	}.Call(page)
	if err != nil {
		panic(err)
	}
	// 打印当前页面的 cookies
	for _, cookie := range cookies.Cookies {
		fmt.Printf("2 Name: %s, Value: %s, Domain: %s\n", cookie.Name, cookie.Value, cookie.Domain)
	}

劫持Js并替换其内容

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	browser := rod.New().MustConnect()
	defer browser.MustClose()

	// 打开页面
	page := browser.MustPage("https://baidu.com")

	// 自定义的替换内容
	customJS := `
		console.log("This is a custom JS file");
		window.customInjected = true;
	`

	// 启用网络拦截
	_ = proto.FetchEnable{
		Patterns: []*proto.FetchRequestPattern{
			{
				URLPattern: "*.js", // 匹配所有 JS 文件
			},
		},
	}.Call(page)

	// 监听并处理网络请求
	go page.EachEvent(func(e *proto.FetchRequestPaused) {
		// 检查是否为目标 JS 文件
		if e.Request.URL == "https://hector.baidu.com/a.js" {
			fmt.Println("found the js")
			_ = proto.FetchFulfillRequest{
				RequestID:    e.RequestID,
				ResponseCode: 200,
				Body:         []byte(customJS),
			}.Call(page)
		} else {
			// 继续加载其他资源
			_ = proto.FetchContinueRequest{
				RequestID: e.RequestID,
			}.Call(page)
		}
	})()

	// 加载页面
	page.MustWaitLoad()

	// 检查替换结果
	res := page.MustEval("() => window.customInjected").Bool()
	fmt.Println("Custom JS Injected:", res)

最后修改 December 8, 2024: 更新 (8c51be2)