package main

import (

    "fmt"

    "time"

)

//获取时间的格式

func testTime() {

    now := time.Now()

    fmt.Printf("current time:%v\n", now)

    year := now.Year()

    month := now.Month()

    day := now.Day()

    hour := now.Hour()

    minute := now.Minute()

    second := now.Second()

    // %02d表示不够2位的话，就补0

    fmt.Printf("%02d-%02d-%02d %02d:%02d:%02d\n ", year, month, day, hour, minute, second)

}

//获取时间戳

func testTimestamp(timestamp int64) {

    timeObj := time.Unix(timestamp, )

    year := timeObj.Year()

    month := timeObj.Month()

    day := timeObj.Day()

    hour := timeObj.Hour()

    minute := timeObj.Minute()

    second := timeObj.Second()

    fmt.Printf("current timestamp:%d\n", timestamp)

    fmt.Printf("%02d-%02d-%02d %02d:%02d:%02d\n", year, month, day, hour, minute, second)

}

func processTask() {

    fmt.Printf("do task\n")

}

//定时器

func testTicker() {

    ticker := time.Tick( * time.Second)

    for i := range ticker {

        fmt.Printf("%v\n", i)

        processTask()

    }

}

//time.Duration用来表示纳秒

func testConst() {

    //一些常量

    fmt.Printf("nano second:%d\n", time.Nanosecond)

    fmt.Printf("micro second:%d\n", time.Microsecond)

    fmt.Printf("mili second:%d\n", time.Millisecond)

    fmt.Printf("second:%d\n", time.Second)

}

//时间格式化

func testFormat() {

    now := time.Now()

    timeStr := now.Format("2006-01-02 15:04:05")

    fmt.Printf("time:%s\n", timeStr)

}

func main() {

    //testTime()

    //timestamp := time.Now().Unix()

    //testTimestamp(timestamp)

    //testTicker()

    //testConst()

    testFormat()

}