golang对网站页面进行截图并保存

package main

import (
   "fmt"
   "github.com/robfig/cron/v3"
   "io"
   "io/ioutil"
   "log"
   "net/http"
   "os"
   "time"
)

func main() {
   jt()
   c := cron.New()
   c.AddFunc("@every 30m", jt)
   c.Start()
   select {}
}
func jt(){
   urls:=[...]string{     
      "https://www.screenshotmaster.com/api/v1/screenshot?token=60d400c0c6210&url=http://222.22.63.179/a&full_page=1&width=1280&height=800&zone=gz",
   }
   t := time.Now()
   str2 := t.Format("2006年01月02日3点4分")
   _dir := "./kqkh/"+str2
   exist, err := PathExists(_dir)
   if err != nil {
      fmt.Printf("get dir error![%v]\n", err)
      return
   }
   if exist {
      fmt.Printf("has dir![%v]\n", _dir)
   } else {
      fmt.Printf("no dir![%v]\n", _dir)
      // 创建文件夹
      err := os.MkdirAll(_dir, os.ModePerm)
      if err != nil {
         fmt.Printf("mkdir failed![%v]\n", err)
      } else {
         fmt.Printf("mkdir success!\n")
      }
   }
   for index, i := range urls {
      defer url(i,index,_dir )
   }
}
func url(i string,index int, _dir string){
   query := i
   // 调用API
   resp, err := http.Get(query)
   if err != nil {
      panic(err)
   }
   defer resp.Body.Close()
   // 检查是否调用成功
   if resp.StatusCode != 200 {
      errorBody, _ := ioutil.ReadAll(resp.Body)
      panic(fmt.Errorf("error while calling api %s", errorBody))
      if err := recover(); err != nil { //产生了panic异常
         fmt.Println(err)
      }
   }
   t := time.Now()
   str := t.Format("2006年01月02日3点4分5秒")

   log.Print("操作文件成功:", str)
   time.Sleep(time.Duration(5)*time.Second)
   names:=[...]string{
      "远程官网",
   }
   for index2, i2 :=range names{
      if(index==index2){
         println(i2)
         // 保存截图
         file, err := os.Create(_dir+"/"+i2+".png")
         if err != nil {
            panic(err)
         }
         defer file.Close()
         _, err = io.Copy(file, resp.Body)
         if err != nil {
            panic(err)
         }
      }
   }
}
func PathExists(path string) (bool, error) {
   _, err := os.Stat(path)
   if err == nil {
      return true, nil
   }
   if os.IsNotExist(err) {
      return false, nil
   }
   return false, err
}
运行截图：