DevToolsActivePort file not exist The process started from chrome is no longer running

使用Go进行自动化测试

在Linux上Go使用ChromeDriver进行Webdriver发生一个错误。

panic: unknown error: unknown error: Chrome failed to start: exited abnormally.
  (unknown error: DevToolsActivePort file doesn't exist)
  (The process started from chrome location /usr/bin/google-chrome is no longer running, so ChromeDriver is assuming that Chrome has crashed.)

解决方案：(添加粉红字体参数[作用：解决非root无法调用chome问题])

chromeCaps := chrome.Capabilities{
// Prefs: imgCaps,
Path: “”,
Args: []string{
// “–headless”,
“–start-maximized”,
“–window-size=1200x600”,
"--no-sandbox",
“–user-agent=Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36”,
“–disable-gpu”,
“–disable-impl-side-painting”,
“–disable-gpu-sandbox”,
“–disable-accelerated-2d-canvas”,
“–disable-accelerated-jpeg-decoding”,
“–test-type=ui”,
},
}

---

环境： centos7 go.1.14.4
使用到的工具下载链接：

• wget http://npm.taobao.org/mirrors/chromedriver/83.0.4103.14/chromedriver_linux64.zip
• chrome浏览器安装自行百度

完整代码(模拟用户登录百度搜索点击)

package main

import (
	"fmt"
	"time"

	"github.com/tebeka/selenium"
	"github.com/tebeka/selenium/chrome"
)

const (
	//设置常量 分别设置chromedriver.exe的地址和本地调用端口
	seleniumPath = `/root/chromedriver`
	port         = 9515
)

func main() {
    
    
	chromeCaps := chrome.Capabilities{
    
    
		// Prefs: imgCaps,
		Path: "",
		Args: []string{
    
    
			// "--headless",  //不开启浏览器
			"--start-maximized",
			"--window-size=1200x600",
			"--no-sandbox", //非root可运行
			"--user-agent=Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36",
			"--disable-gpu",
			"--disable-impl-side-painting",
			"--disable-gpu-sandbox",
			"--disable-accelerated-2d-canvas",
			"--disable-accelerated-jpeg-decoding",
			"--test-type=ui",
		},
	}
	//1.开启selenium服务
	//设置selium服务的选项,设置为空。根据需要设置。
	ops := []selenium.ServiceOption{
    
    }
	service, err := selenium.NewChromeDriverService(seleniumPath, port, ops...)
	if err != nil {
    
    
		fmt.Printf("Error starting the ChromeDriver server: %v", err)
	}
	//延迟关闭服务
	defer service.Stop()

	//2.调用浏览器
	//设置浏览器兼容性，我们设置浏览器名称为chrome
	caps := selenium.Capabilities{
    
    
		"browserName": "chrome",
	}
	caps.AddChrome(chromeCaps)
	//调用浏览器urlPrefix: 测试参考：DefaultURLPrefix = "http://127.0.0.1:4444/wd/hub"
	wd, err := selenium.NewRemote(caps, "http://127.0.0.1:9515/wd/hub")
	if err != nil {
    
    
		panic(err)
	}
	//延迟退出chrome
	defer wd.Quit()

	//3.对页面元素进行操作
	//获取百度页面
	if err := wd.Get("https://www.baidu.com/"); err != nil {
    
    
		panic(err)
	}
	//找到百度输入框id
	we, err := wd.FindElement(selenium.ByID, "kw")
	if err != nil {
    
    
		panic(err)
	}
	//向输入框发送“”
	err = we.SendKeys("天下第一")
	if err != nil {
    
    
		panic(err)
	}
	//找到百度提交按钮id
	we, err = wd.FindElement(selenium.ByID, "su")
	if err != nil {
    
    
		panic(err)
	}
	//点击提交
	err = we.Click()
	if err != nil {
    
    
		panic(err)
	}
	//睡眠20秒后退出
	time.Sleep(20 * time.Second)
}