格式化时间代码,GO代码库,德仔网

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【GO】格式化时间
作者: / 发布于2016/4/12/ 1277
实现时间格式化，类似于 yyyy-MM-dd HH:mm:ss格式。
func DateFormat(t time.Time, format string) string  {
 
    //year
    if strings.ContainsAny(format, "y") {
 
        year := strconv.Itoa(t.Year())
 
        if strings.Count(format, "yy") == 1 && strings.Count(format, "y") == 2 {
            format = strings.Replace(format, "yy", year[2:], 1)
        } else if strings.Count(format, "yyyy") == 1 && strings.Count(format, "y") == 4 {
            format = strings.Replace(format, "yyyy", year, 1)
        } else {
            panic("format year error! please 'yyyy' or 'yy'")
        }
    }
 
    //month
    if strings.ContainsAny(format, "M") {
 
        var month string
 
        if int(t.Month()) < 10 {
            month = "0" + strconv.Itoa(int(t.Month()))
        } else {
            month = strconv.Itoa(int(t.Month()))
        }
 
        if strings.Count(format, "MM") == 1 && strings.Count(format, "M") == 2 {
            format = strings.Replace(format, "MM", month, 1)
        } else {
            panic("format month error! please 'MM'")
        }
    }
 
    //day
    if strings.ContainsAny(format, "d") {
 
        var day string
 
        if t.Day() < 10 {
            day = "0" + strconv.Itoa(t.Day())
        } else {
            day = strconv.Itoa(t.Day())
        }
 
        if strings.Count(format, "dd") == 1 && strings.Count(format, "d") == 2 {
            format = strings.Replace(format, "dd", day, 1)
        } else {
            panic("format day error! please 'dd'")
        }
    }
 
    //hour
    if strings.ContainsAny(format, "H") {
 
        var hour string
 
        if t.Hour() < 10 {
            hour = "0" + strconv.Itoa(t.Hour())
        } else {
            hour = strconv.Itoa(t.Hour())
        }
 
        if strings.Count(format, "HH") == 1 && strings.Count(format, "H") == 2 {
            format = strings.Replace(format, "HH", hour, 1)
        } else {
            panic("format hour error! please 'HH'")
        }
    }
 
    //minute
    if strings.ContainsAny(format, "m") {
 
        var minute string
 
        if t.Minute() < 10 {
            minute = "0" + strconv.Itoa(t.Minute())
        } else {
            minute = strconv.Itoa(t.Minute())
        }
        if strings.Count(format, "mm") == 1 && strings.Count(format, "m") == 2 {
            format = strings.Replace(format, "mm", minute, 1)
        } else {
            panic("format minute error! please 'mm'")
        }
    }
 
    //second
    if strings.ContainsAny(format, "s") {
 
        var second string
 
        if t.Second() < 10 {
            second = "0" + strconv.Itoa(t.Second())
        } else {
            second = strconv.Itoa(t.Second())
        }
 
        if strings.Count(format, "ss") == 1 && strings.Count(format, "s") == 2 {
            format = strings.Replace(format, "ss", second, 1)
        } else {
            panic("format second error! please 'ss'")
        }
    }
 
    return format
}
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