datetime转换成时间字符串
package main
import (
"fmt"
"reflect"
"time"
)
func main() {
now := time.Now() // 当前 datetime 时间
fmt.Println(reflect.TypeOf(now)) // 打印当前时间的类型
fmt.Println(now) // 打印当前时间
fmt.Println("***********************")
t1 := now.Format("2006-01-02 15:04:05") // 把当前 datetime 时间转换成时间字符串
fmt.Println(t1)
fmt.Println(reflect.TypeOf(t1))
}
程序执行结果
time.Time
2020-12-28 17:51:01.2357834 +0800 CST m=+0.004988701
***********************
2020-12-28 17:51:01
string
datetime转换成时间戳
package main
import (
"fmt"
"time"
)
func parse_datetime_to_timestamp(d time.Time) int64 {
unix_time := d.Unix()
return unix_time
}
func main() {
now := time.Now() // 当前 datetime 时间
t1 := parse_datetime_to_timestamp(now) // 转换成时间戳
tomorrow := now.AddDate(0, 0, +1) // 一天之后的 datetime 时间
t2 := parse_datetime_to_timestamp(tomorrow) // 转换成时间戳
fmt.Println(t1)
fmt.Println(t2)
}
程序执行结果
1568631868
1568718268
时间戳转换成时间字符串
package main
import (
"fmt"
"time"
)
func parse_timestamp_to_timestr(t int64, flag int) string {
var time_str string
if flag == 1 {
time_str = time.Unix(t, 0).Format("2006.01.02")
} else if flag == 2 {
time_str = time.Unix(t, 0).Format("2006-01-02 15:04:05")
} else if flag == 3 {
time_str = time.Unix(t, 0).Format("2006-01-02 15:04")
} else {
time_str = time.Unix(t, 0).Format("2006-01-02")
}
return time_str
}
func main() {
var t1 int64
t1 = 1567778332
str1 := parse_timestamp_to_timestr(t1,3)
fmt.Println(str1)
}
程序执行结果
2020-12-28 21:58
时间字符串转换成时间戳
package main
import (
"fmt"
"time"
)
func parse_timestr_to_timestamp(time_str string, flag int) int64 {
var t int64
loc, _ := time.LoadLocation("Local")
if flag == 1 {
t1, _ := time.ParseInLocation("2006.01.02 15:04:05", time_str, loc)
t = t1.Unix()
} else if flag == 2 {
t1, _ := time.ParseInLocation("2006-01-02 15:04", time_str, loc)
t = t1.Unix()
} else if flag == 3 {
t1, _ := time.ParseInLocation("2006-01-02", time_str, loc)
t = t1.Unix()
} else if flag == 4 {
t1, _ := time.ParseInLocation("2006.01.02", time_str, loc)
t = t1.Unix()
} else {
t1, _ := time.ParseInLocation("2006-01-02 15:04:05", time_str, loc)
t = t1.Unix()
}
return t
}
func main() {
time_str1 := "2019-09-16 00:00:00"
time_str2 := "2019-09-16 15:04"
time_str3 := "2019-09-16"
time_str4 := "2019.09.18"
t1 := parse_timestr_to_timestamp(time_str1,5)
fmt.Println(t1)
t2 := parse_timestr_to_timestamp(time_str2,2)
fmt.Println(t2)
t3 := parse_timestr_to_timestamp(time_str3,3)
fmt.Println(t3)
t4 := parse_timestr_to_timestamp(time_str4,4)
fmt.Println(t4)
}
程序执行结果
1568563200
1568617440
1568563200
1568736000
时间戳转换成datetime时间
package main
import (
"fmt"
"time"
)
func parse_timestamp_to_datetime(t int64) time.Time {
return time.Unix(t,0)
}
func main() {
var t1 int64
t1 = 1568634050
time1 := parse_timestamp_to_datetime(t1)
fmt.Println(time1)
}
程序执行结果
2020-12-28 19:40:50 +0800 CST
时间字符串转换成时间戳
package main
import (
"fmt"
"time"
)
func parse_timestr_to_datetime(time_str string, flag int) time.Time {
if flag == 1 {
t, error1 := time.Parse("2006-01-02 15:04:05", time_str)
if error1 != nil {
panic(error1)
}
return t
} else if flag == 2 {
t, error2 := time.Parse("2006-01-02 15:04", time_str)
if error2 != nil {
panic(error2)
}
return t
} else if flag == 3 {
t, error3 := time.Parse("2006-01-02", time_str)
if error3 != nil {
panic(error3)
}
return t
} else if flag == 4 {
t, error4 := time.Parse("2006.01.02 15:04:05", time_str)
if error4 != nil {
panic(error4)
}
return t
} else if flag == 5 {
t, error5 := time.Parse("2006.01.02 15:04", time_str)
if error5 != nil {
panic(error5)
}
return t
} else {
t, err := time.Parse("2006.01.02", time_str)
if err != nil {
panic(err)
}
return t
}
}
func main() {
time_str1 := "2019-09-16 15:04:05"
t1 := parse_timestr_to_datetime(time_str1, 1)
fmt.Println(t1)
time_str2 := "2019-09-16 15:04"
t2 := parse_timestr_to_datetime(time_str2, 2)
fmt.Println(t2)
time_str3 := "2019-09-16"
t3 := parse_timestr_to_datetime(time_str3, 3)
fmt.Println(t3)
time_str4 := "2019.09.16 15:04:05"
t4 := parse_timestr_to_datetime(time_str4, 4)
fmt.Println(t4)
time_str5 := "2019.09.16 15:04"
t5 := parse_timestr_to_datetime(time_str5, 5)
fmt.Println(t5)
time_str6 := "2019.09.16"
t6 := parse_timestr_to_datetime(time_str6, 6)
fmt.Println(t6)
}
程序执行结果
2020-12-28 15:04:05 +0000 UTC
2020-12-28 15:04:00 +0000 UTC
2020-12-28 00:00:00 +0000 UTC
2020-12-28 15:04:05 +0000 UTC
2020-12-28 15:04:00 +0000 UTC
2020-12-28 00:00:00 +0000 UTC
日期加减操作
package main
import (
"fmt"
"time"
)
func main() {
now := time.Now() // 当前 datetime时间
tomorrow := now.AddDate(0, 0, +1) // 一天之后的时间
fmt.Println(tomorrow)
day_after_15 := now.AddDate(0, 0, -15) // 15天之前的时间
fmt.Println(day_after_15)
}
程序执行结果
2019-09-17 17:55:59.4755575 +0800 CST
2019-09-01 17:55:59.4755575 +0800 CST
总结:
import (
"fmt"
"time"
)
func parse_datetime_to_timestr(t time.Time, flag int) string {
/**
把 datetime 转换成 时间字符串
t: datetime 时间,比如:2019-09-17 09:45:42.5962359 +0800 CST m=+0.003989201
flag: 标识位,决定输出的时间字符串的格式
*/
var time_str string
if flag == 1 {
time_str = t.Format("2006-01-02 15:04:05")
} else if flag == 2 {
time_str = t.Format("2006-01-02 15:04")
} else if flag == 3 {
time_str = t.Format("2006-01-02")
} else if flag == 4 {
time_str = t.Format("2006.01.02 15:04:05")
} else if flag == 6 {
time_str = t.Format("2006.01.02 15:04")
} else {
time_str = t.Format("2006.01.02")
}
return time_str
}
func parse_datetime_to_timestamp(t time.Time) int64 {
/**
把 datetime 转换成时间戳
t: datetime 时间
*/
return t.Unix()
}
func parse_timestr_to_datetime(time_str string, flag int) time.Time {
/**
把时间字符串转换成 datetime 时间
time_str: 时间字符串,比如:2019-09-17 15:04:05
flag: 标识位,决定输入的时间字符串的格式
*/
if flag == 1 {
t, error1 := time.Parse("2006-01-02 15:04:05", time_str)
if error1 != nil {
panic(error1)
}
return t
} else if flag == 2 {
t, error2 := time.Parse("2006-01-02 15:04", time_str)
if error2 != nil {
panic(error2)
}
return t
} else if flag == 3 {
t, error3 := time.Parse("2006-01-02", time_str)
if error3 != nil {
panic(error3)
}
return t
} else if flag == 4 {
t, error4 := time.Parse("2006.01.02 15:04:05", time_str)
if error4 != nil {
panic(error4)
}
return t
} else if flag == 5 {
t, error5 := time.Parse("2006.01.02 15:04", time_str)
if error5 != nil {
panic(error5)
}
return t
} else {
t, err := time.Parse("2006.01.02", time_str)
if err != nil {
panic(err)
}
return t
}
}
func parse_timestr_to_timestamp(time_str string, flag int) int64 {
/**
把时间字符串转换成时间戳
time_str: 时间字符串,比如:2019-09-17 09:45:42
flag: 标识位,决定传入的时间字符串的格式
*/
var t int64
loc, _ := time.LoadLocation("Local")
if flag == 1 {
t1, _ := time.ParseInLocation("2006.01.02 15:04:05", time_str, loc)
t = t1.Unix()
} else if flag == 2 {
t1, _ := time.ParseInLocation("2006-01-02 15:04", time_str, loc)
t = t1.Unix()
} else if flag == 3 {
t1, _ := time.ParseInLocation("2006-01-02", time_str, loc)
t = t1.Unix()
} else if flag == 4 {
t1, _ := time.ParseInLocation("2006.01.02", time_str, loc)
t = t1.Unix()
} else {
t1, _ := time.ParseInLocation("2006-01-02 15:04:05", time_str, loc)
t = t1.Unix()
}
return t
}
func parse_timestamp_to_timestr(stamp int64, flag int) string {
/**
把时间戳转换成时间字符串
stamp: 时间戳,比如:1568685105,调用此方法时需先声明为 int64 类型
flag: 标识位,决定输入的时间字符串的格式
*/
var time_str string
if flag == 1 {
time_str = time.Unix(stamp, 0).Format("2006-01-02")
} else if flag == 2 {
time_str = time.Unix(stamp, 0).Format("2006-01-02 15:04:05")
} else if flag == 3 {
time_str = time.Unix(stamp, 0).Format("2006-01-02 15:04")
} else if flag == 4 {
time_str = time.Unix(stamp, 0).Format("2006.01.02 15:04:05")
} else if flag == 5 {
time_str = time.Unix(stamp, 0).Format("2006.01.02 15:04")
} else {
time_str = time.Unix(stamp, 0).Format("2006.01.02")
}
return time_str
}
func parse_timestamp_to_datetime(t int64) time.Time {
/**
时间戳转换成 datetime 时间
*/
return time.Unix(t, 0)
}
func get_after_day(day_range, flag int) time.Time {
/**
获取多少天,多少月或者多少年之前或之后的时间
day_range: 间隔的天数,月数或者年份数
flag: 决定是取天数,月数还是年数
*/
now := time.Now()
var tmp_day time.Time
if flag == 1 {
tmp_day = now.AddDate(day_range, 0, 0)
} else if flag == 2 {
tmp_day = now.AddDate(0, day_range, 0)
} else {
tmp_day = now.AddDate(0, 0, day_range)
}
return tmp_day
}
func get_after_time(time_range string) time.Time {
/**
获取多少小时,分钟及秒之前或之后的时间
time_range: 时间差,比如:
10h 获取10小时之后的时间
-10h 获取10小时之前的时间
10m 获取10分钟之后的时间
-10m 获取10分钟之后的时间
10s 获取10秒之后的时间
-10s 获取10秒之后的时间
*/
m, _ := time.ParseDuration(time_range)
tmp := time.Now().Add(m)
return tmp
}
func get_current(t time.Time) {
current_year := t.Year() // 获取年份
fmt.Println(current_year)
current_month := t.Month() // 获取月份
fmt.Println(current_month)
current_day := t.Day() // 获取天数
fmt.Println(current_day)
current_hour := t.Hour() // 获取小时数
fmt.Println(current_hour)
current_minute := t.Minute() // 获取分钟数
fmt.Println(current_minute)
current_second := t.Second() // 获取秒数
fmt.Println(current_second)
current_nanosecond := t.Nanosecond() // 获取纳秒数
fmt.Println(current_nanosecond)
}