win7 环境,主要是一开始想在代码中先用exec.Command启动chrome,但始终不能成功监听9222端口,折腾了很长时间,
需要先手工启动chrome监听端口,具体写在代码注释中了。
然后再运行代码,代码只是在开源代码基础上稍作修改,将访问不了的google换成sohu。代码效果就是通过代码将浏览器导航到了sohu.com
// Command standalone is a chromedp example demonstrating how to use chromedp// with a standalone (ie, a "pre-existing" / manually started) chrome instance.package mainimport ( "context" "fmt" "io/ioutil" "log" "time" "github.com/chromedp/cdproto/cdp" "github.com/chromedp/chromedp" "github.com/chromedp/chromedp/client")func main() { //用cmd中用带 /c start命令,无法成功启动chrome监听端口, //用exec.Command("C:/Program Files (x86)/Google/Chrome/Application/chrome.exe", "--remote-debugging-port=9222").Run()也不行 //可以在windows cmd 中手工执行下一行的命令启动chrome,注意修改chrome实际路径,另外注意将chrome.exe加入windows防火墙 //cmd /c "C:Program Files (x86)GoogleChromeApplicationchrome.exe" --remote-debugging-port=9222 //或用下一行在cmd中手工启动chrome,和上一行的命令类似,注意修改chrome实际路径,注意命令的前半部分有双引号,后半部分没有双引号 //"C:Program Files (x86)GoogleChromeApplicationchrome.exe" --remote-debugging-port=9222 time.Sleep(3 * time.Second) var err error // create context ctxt, cancel := context.WithCancel(context.Background()) defer cancel() // create chrome c, err := chromedp.New(ctxt, chromedp.WithTargets(client.New().WatchPageTargets(ctxt)), chromedp.WithLog(log.Printf)) if err != nil { log.Fatal(err) } fmt.Println("ctxt") // run task list var site, res string err = c.Run(ctxt, googleSearch("site:sohu.com", "Easy Money Management", &site, &res)) if err != nil { log.Fatal(err) } log.Printf("saved screenshot of #testimonials from search result listing `%s` (%s)", res, site)}func googleSearch(q, text string, site, res *string) chromedp.Tasks { var buf []byte sel := fmt.Sprintf(`//a[text()[contains(., ‘%s‘)]]`, text) return chromedp.Tasks{ chromedp.Navigate(`https://www.sohu.com`), chromedp.Sleep(2 * time.Second), chromedp.WaitVisible(`#hplogo`, chromedp.ByID), chromedp.SendKeys(`#lst-ib`, q+"", chromedp.ByID), chromedp.WaitVisible(`#res`, chromedp.ByID), chromedp.Text(sel, res), chromedp.Click(sel), chromedp.Sleep(2 * time.Second), chromedp.WaitVisible(`#footer`, chromedp.ByQuery), chromedp.WaitNotVisible(`div.v-middle > div.la-ball-clip-rotate`, chromedp.ByQuery), chromedp.Location(site), chromedp.Screenshot(`#testimonials`, &buf, chromedp.ByID), chromedp.ActionFunc(func(context.Context, cdp.Executor) error { return ioutil.WriteFile("testimonials.webp", buf, 0644) }), }}