精简Golang Selenium启动Chrome，Cookie到本地，爬取链接

 package main

import (
	"encoding/json"
	"github.com/antchfx/htmlquery"
	"github.com/tebeka/selenium"
	"io/ioutil"
	"log"
	"strings"
	"time"
)

func main() {
	//设置日志输出格式
	log.SetFlags(log.LstdFlags | log.Lshortfile)
	//初始化1个chrome服务，端口使用4444
	service, err := selenium.NewChromeDriverService("chromedriver.exe", 4444)
	if err != nil {
		log.Println(err)
		return
	}
	defer service.Stop()
	//启动本地chrome浏览器
	caps := selenium.Capabilities{}
	wd, err := selenium.NewRemote(caps, "#34;)
	if err != nil {
		log.Println(err)
		return
	}
	defer wd.Quit()
	//打开页面
	err = wd.Get("#34;)
	if err != nil {
		log.Println(err)
		return
	}
	for true {
		//获取所有的handler
		handles, err := wd.WindowHandles()
		if err != nil {
			log.Println(err)
			return
		}
		//每次都跳转到最后一个handler
		err = wd.SwitchWindow(handles[len(handles)-1])
		if err != nil {
			log.Println(err)
			return
		}
		//获取当前的url地址
		currentURL, err := wd.CurrentURL()
		if err != nil {
			log.Println(err)
			return
		}
		log.Println(currentURL)
		//获取cookies
		cookies, err := wd.GetCookies()
		if err != nil {
			log.Println(err)
			return
		}
		//尝试输出看看cookies的信息
		for i, cookie := range cookies {
			log.Println(i, cookie)
		}
		//通过json将cookies编码
		marshalIndent, err := json.MarshalIndent(cookies, "", "\t")
		if err != nil {
			log.Println(err)
			return
		}
		log.Println(marshalIndent)
		//将cookies编码后的json写入到本地文件
		err = ioutil.WriteFile(
			"cks.dat",
			marshalIndent,
			0777,
		)
		if err != nil {
			log.Println(err)
			return
		}
		//通过xpath获取当前页面的a链接
		pageSource, err := wd.PageSource()
		if err != nil {
			log.Println(err)
			return
		}
		newReader := strings.NewReader(pageSource)
		parse, err := htmlquery.Parse(newReader)
		if err != nil {
			log.Println(err)
			return
		}
		nodes := htmlquery.Find(parse, "//a[@href]")
		for i, node := range nodes {
			log.Println(i, htmlquery.InnerText(node), htmlquery.SelectAttr(node, "href"))
		}
		time.Sleep(time.Second * 1)
		break
	}
}