Golang时间处理技巧及time包使用方法

now := time.Now()
fmt.Println(now) // 输出类似：2024-05-10 14:30:22.123456 +0800 CST m=+0.000000001

fmt.Println(now.Year())        // 年
fmt.Println(now.Month())       // 月（time.Month 类型）
fmt.Println(now.Day())         // 日
fmt.Println(now.Hour())        // 小时
fmt.Println(now.Weekday())     // 星期几

fmt.Println(now.Format("2006-01-02 15:04:05"))
fmt.Println(now.Format("2006/01/02"))
fmt.Println(now.Format("15:04:05"))
fmt.Println(now.Format(time.RFC3339)) // 内建常量，输出如：2024-05-10T14:30:22+08:00

t, err := time.Parse("2006-01-02 15:04:05", "2024-05-10 10:00:00")
if err != nil {
    log.Fatal(err)
}
fmt.Println(t)

loc, _ := time.LoadLocation("Asia/Shanghai")
t, _ := time.ParseInLocation("2006-01-02 15:04:05", "2024-05-10 10:00:00", loc)

time.Second
time.Minute
time.Hour
time.Millisecond
time.Microsecond
time.Nanosecond

fmt.Println("开始")
time.Sleep(2 * time.Second)
fmt.Println("2秒后")

ticker := time.NewTicker(1 * time.Second)
go func() {
    for t := range ticker.C {
        fmt.Println("每秒执行一次:", t)
    }
}()
// 别忘了在适当时候停止：ticker.Stop()