2020年5月12日转时间戳
代码如下

package main

import (
	"fmt"
	"strings"
	"time"
)


func dateToTimestamp() (dateTimestamp int64) {
	date := "2020年5月12日"
	date = strings.Replace(date, "年", "-", 1)
	date = strings.Replace(date, "月", "-", 1)
	date = strings.Trim(date, "日")
	stamp, _ := time.ParseInLocation("2006-1-2", date, time.Local)
	dateTimestamp = stamp.Unix()
	return dateTimestamp
}
func main() {
	fmt.Println(dateToTimestamp())
}

输出结果:1589212800

time.Time格式转时间戳

package main

import(
    "fmt"
    "time"
)

func main() {
    datetime := "2015-01-01 00:00:00"  //待转化为时间戳的字符串

    //日期转化为时间戳
    timeLayout := "2006-01-02 15:04:05"  //转化所需模板  
    loc, _ := time.LoadLocation("Local")    //获取时区  
    tmp, _ := time.ParseInLocation(timeLayout, datetime, loc) 
    timestamp := tmp.Unix()    //转化为时间戳 类型是int64
    fmt.Println(timestamp) 

    //时间戳转化为日期  
    datetime = time.Unix(timestamp, 0).Format(timeLayout)
    fmt.Println(datetime)    
}