Go开发常用第三方库之time
本文主要介绍一个好用的时间工具库,主要功能:
- 当前时间
- 修改地区
- 解析字符串 等
Usage
import "github.com/jinzhu/now"
time.Now() // 2013-11-18 17:51:49.123456789 Mon
now.BeginningOfMinute() // 2013-11-18 17:51:00 Mon
now.BeginningOfHour() // 2013-11-18 17:00:00 Mon
now.BeginningOfDay() // 2013-11-18 00:00:00 Mon
now.BeginningOfWeek() // 2013-11-17 00:00:00 Sun
now.BeginningOfMonth() // 2013-11-01 00:00:00 Fri
now.BeginningOfQuarter() // 2013-10-01 00:00:00 Tue
now.BeginningOfYear() // 2013-01-01 00:00:00 Tue
now.EndOfMinute() // 2013-11-18 17:51:59.999999999 Mon
now.EndOfHour() // 2013-11-18 17:59:59.999999999 Mon
now.EndOfDay() // 2013-11-18 23:59:59.999999999 Mon
now.EndOfWeek() // 2013-11-23 23:59:59.999999999 Sat
now.EndOfMonth() // 2013-11-30 23:59:59.999999999 Sat
now.EndOfQuarter() // 2013-12-31 23:59:59.999999999 Tue
now.EndOfYear() // 2013-12-31 23:59:59.999999999 Tue
now.WeekStartDay = time.Monday // Set Monday as first day, default is Sunday
now.EndOfWeek() // 2013-11-24 23:59:59.999999999 Sun
修改地区
location, err := time.LoadLocation("Asia/Shanghai")
myConfig := &now.Config{
WeekStartDay: time.Monday,
TimeLocation: location,
TimeFormats: []string{"2006-01-02 15:04:05"},
}
t := time.Date(2013, 11, 18, 17, 51, 49, 123456789, time.Now().Location()) // // 2013-11-18 17:51:49.123456789 Mon
myConfig.With(t).BeginningOfWeek() // 2013-11-18 00:00:00 Mon
myConfig.Parse("2002-10-12 22:14:01") // 2002-10-12 22:14:01
myConfig.Parse("2002-10-12 22:14") // returns error 'can't parse string as time: 2002-10-12 22:14'
解析字符串
time.Now() // 2013-11-18 17:51:49.123456789 Mon
// Parse(string) (time.Time, error)
t, err := now.Parse("2017") // 2017-01-01 00:00:00, nil
t, err := now.Parse("2017-10") // 2017-10-01 00:00:00, nil
t, err := now.Parse("2017-10-13") // 2017-10-13 00:00:00, nil
t, err := now.Parse("1999-12-12 12") // 1999-12-12 12:00:00, nil
t, err := now.Parse("1999-12-12 12:20") // 1999-12-12 12:20:00, nil
t, err := now.Parse("1999-12-12 12:20:21") // 1999-12-12 12:20:21, nil
t, err := now.Parse("10-13") // 2013-10-13 00:00:00, nil
t, err := now.Parse("12:20") // 2013-11-18 12:20:00, nil
t, err := now.Parse("12:20:13") // 2013-11-18 12:20:13, nil
t, err := now.Parse("14") // 2013-11-18 14:00:00, nil
t, err := now.Parse("99:99") // 2013-11-18 12:20:00, Can't parse string as time: 99:99`