func main() {
  now := time.Now() //獲取當(dāng)前時(shí)間
  fmt.Printf("當(dāng)前時(shí)間:%v\n", now)
  //當(dāng)前時(shí)間:2021-12-26 09:38:42.334358833 +0000 UTC m=+0.000056108
	
  year := now.Year()     //年
  month := now.Month()   //月
  day := now.Day()       //日
  hour := now.Hour()     //小時(shí)
  minute := now.Minute() //分鐘
  second := now.Second() //秒
  fmt.Printf("%d-%02d-%02d %02d:%02d:%02d\n", year, month, day, hour, minute, second)
  fmt.Printf("%T,%T,%T,%T,%T,%T,%T\n", now, year, month, day, hour, minute, second)
  //time.Time,int,time.Month,int,int,int,int
}

func main() {
  now := time.Now()            //獲取當(dāng)前時(shí)間
  timestamp1 := now.Unix()     //時(shí)間戳
  timestamp2 := now.UnixNano() //納秒時(shí)間戳
  fmt.Printf("current timestamp1:%v\n", timestamp1)
  fmt.Printf("current timestamp2:%v\n", timestamp2)
}

func main() {
  timestamp := time.Now().Unix()
  timeObj := time.Unix(timestamp, 0) //將時(shí)間戳轉(zhuǎn)為時(shí)間格式
  fmt.Println(timeObj) //2021-12-26 09:47:39 +0000 UTC
  year := timeObj.Year()     //年
  month := timeObj.Month()   //月
  day := timeObj.Day()       //日
  hour := timeObj.Hour()     //小時(shí)
  minute := timeObj.Minute() //分鐘
  second := timeObj.Second() //秒
  fmt.Printf("%d-%02d-%02d %02d:%02d:%02d\n", year, month, day, hour, minute, second) //2021-12-26 09:47:39
}

const (
    Nanosecond  Duration = 1
    Microsecond          = 1000 * Nanosecond
    Millisecond          = 1000 * Microsecond
    Second               = 1000 * Millisecond
    Minute               = 60 * Second
    Hour                 = 60 * Minute
)

func main() {
	now := time.Now()
	fmt.Println(now)
	
	h := time.Duration(1)
	m := time.Duration(2)
	s := time.Duration(3)
	// 當(dāng)前時(shí)間加1小時(shí)2分3秒后的時(shí)間
	later := now.Add(time.Hour*h + time.Minute*m + time.Second*s) 
	fmt.Println(later)
}

func main() {
  now := time.Now()
  fmt.Println(now)
	
  targetTime := now.Add(time.Hour)
  // 目標(biāo)時(shí)間與此時(shí)相比相差1h0m0s
  fmt.Println(targetTime.Sub(now)) //1h0m0s
	
  before := now.Add(time.Hour*-1) // 當(dāng)前時(shí)間減1小時(shí)后的時(shí)間
  fmt.Println(before)
}

func main() {
  ticker := time.Tick(time.Second) //定義一個(gè)1秒間隔的定時(shí)器
  for i := range ticker {
    fmt.Println(i)//每秒都會(huì)執(zhí)行的任務(wù)
  }
}

func main() {
    now := time.Now()
    // 格式化的模板為Go的出生時(shí)間2006年1月2號(hào)15點(diǎn)04分 Mon Jan
    // 24小時(shí)制
    fmt.Println(now.Format("2006-01-02 15:04:05.000 Mon Jan"))
    // 12小時(shí)制
    fmt.Println(now.Format("2006-01-02 03:04:05.000 PM Mon Jan"))
    fmt.Println(now.Format("2006/01/02 15:04"))
    fmt.Println(now.Format("15:04 2006/01/02"))
    fmt.Println(now.Format("2006/01/02"))
}

now := time.Now()
fmt.Println(now)
// 加載時(shí)區(qū)
loc, err := time.LoadLocation("Asia/Shanghai")
if err != nil {
    fmt.Println(err)
    return
}
// 按照指定時(shí)區(qū)和指定格式解析字符串時(shí)間
timeObj, err := time.ParseInLocation("2006/01/02 15:04:05", "2021/12/27 18:48:44", loc)
if err != nil {
    fmt.Println(err)
    return
}
fmt.Println(timeObj)
fmt.Println(timeObj.Sub(now))