package time_parse import ( "github.com/jinzhu/now" "math" "net/http" "time" ) var ( cst = time.Local ) func SetPRCLocation() error { var err error if cst, err = time.LoadLocation("Asia/Shanghai"); err != nil { return err } return nil } func Now() *now.Now { timeFormats := append(append(now.TimeFormats, time.DateTime), time.DateOnly) c := &now.Config{ WeekStartDay: time.Monday, TimeLocation: cst, TimeFormats: timeFormats, } return c.With(time.Now().In(cst)) } // RFC3339ToCSTLayout convert rfc3339 value to China standard time layout // 2020-11-08T08:18:46+08:00 => 2020-11-08 08:18:46 func RFC3339ToCSTLayout(value string) (string, error) { ts, err := time.Parse(time.RFC3339, value) if err != nil { return "", err } return ts.In(cst).Format(time.DateTime), nil } // GetMilliTimestamp 获取CST毫秒时间戳 func GetMilliTimestamp() int64 { return time.Now().In(cst).UnixMilli() } // GetTimestamp 获取CST时间戳 func GetTimestamp() int64 { return time.Now().In(cst).Unix() } // CSTLayoutString 格式化时间 // 返回 "2006-01-02 15:04:05" 格式的时间 func CSTLayoutString() string { return time.Now().In(cst).Format(time.DateTime) } // ParseCSTInLocation 格式化时间 func ParseCSTInLocation(date string) (time.Time, error) { return time.ParseInLocation(time.DateTime, date, cst) } // CSTLayoutStringToUnix 返回 unix 时间戳 // 2020-01-24 21:11:11 => 1579871471 func CSTLayoutStringToUnix(cstLayoutString string) (int64, error) { stamp, err := time.ParseInLocation(time.DateTime, cstLayoutString, cst) if err != nil { return 0, err } return stamp.Unix(), nil } // GMTLayoutString 格式化时间 // 返回 "Mon, 02 Jan 2006 15:04:05 GMT" 格式的时间 func GMTLayoutString() string { return time.Now().In(cst).Format(http.TimeFormat) } // ParseGMTInLocation 格式化时间 func ParseGMTInLocation(date string) (time.Time, error) { return time.ParseInLocation(http.TimeFormat, date, cst) } // SubInLocation 计算时间差 func SubInLocation(ts time.Time) float64 { return math.Abs(time.Now().In(cst).Sub(ts).Seconds()) } // GetFirstDateOfMonth 获取传入的时间所在月份的第一天,即某月第一天的0点。如传入time.Now(), 返回当前月份的第一天0点时间。 func GetFirstDateOfMonth(d time.Time) time.Time { d = d.AddDate(0, 0, -d.Day()+1) return GetStartDayTime(d) } // GetLastDateOfMonth 获取传入的时间所在月份的最后一天,即某月最后一天的0点。如传入time.Now(), 返回当前月份的最后一天0点时间。 func GetLastDateOfMonth(d time.Time) time.Time { return GetEndDayTime(GetFirstDateOfMonth(d).AddDate(0, 1, -1)) } // GetStartDayTime 获取某一天的开始时间 func GetStartDayTime(d time.Time) time.Time { return time.Date(d.Year(), d.Month(), d.Day(), 0, 0, 0, 0, cst) } // GetEndDayTime 获取某一天的结束时间 func GetEndDayTime(d time.Time) time.Time { return GetStartDayTime(d).Add(24 * time.Hour).Add(-time.Second) } // GetStartYesterdayTime 获取昨天的起始时间 func GetStartYesterdayTime() time.Time { d, _ := time.ParseDuration("-24h") return GetStartDayTime(time.Now().Add(d)) } // SubInLocationDays 计算两个日期相差的天数 func SubInLocationDays(t1, t2 time.Time) float64 { t1 = time.Date(t1.Year(), t1.Month(), t1.Day(), 0, 0, 0, 0, cst) t2 = time.Date(t2.Year(), t2.Month(), t2.Day(), 0, 0, 0, 0, cst) return math.Abs(t1.Sub(t2).Hours() / 24) }