Golang time format conversion: tips for converting date and time

Golang Time Conversion: Tips for Converting Date and Time

With the continuous development of Go language in various fields, the demand for processing dates and times is also increasing. common. In the Go language, date and time conversion is a basic operation and a common requirement in development. This article will introduce how to convert date and time in Golang, and provide specific code examples to help developers better master this technique.

Representation of date and time

In the Go language, date and time are represented by the time.Time type respectively. The time.Time type contains date and time information and can represent a time point accurate to the nanosecond level. In addition, the Go language also provides common methods of the time.Time type for operating on dates and times.

Convert date to time

In Golang, converting date to time can be achieved through the time.Parse function. time.ParseThe function accepts two parameters, one is a time format string, and the other is a string representing the date. For example, the sample code to convert the string "2022-10-15" to time is as follows:

package main

import (
    "fmt"
    "time"
)

func main() {
    dateStr := "2022-10-15"
    layout := "2006-01-02"
    
    t, err := time.Parse(layout, dateStr)
    if err != nil {
        fmt.Println("日期转换失败：", err)
        return
    }
    
    fmt.Println("转换后的时间：", t)
}

In the above example, the date string dateStr and the time format character are first defined String layout, and then use the time.Parse function to convert the date string into time, and output the converted time.

Convert time to date

Converting time to date can also be achieved through the time.Format function. time.FormatThe function accepts a time format string to specify the converted date format. Here is the sample code to convert time to date:

package main

import (
    "fmt"
    "time"
)

func main() {
    t := time.Now()
    layout := "2006-01-02"
    
    dateStr := t.Format(layout)
    fmt.Println("转换后的日期：", dateStr)
}

In the above example, get the current time through the time.Now() function and then use time.FormatThe function converts time to date and outputs the converted date string.

Convert timestamp to date and time

Sometimes we need to convert a timestamp (Unix timestamp) to date and time format. In Golang, this can be achieved through the time.Unix function. time.UnixThe function accepts two parameters, the first is the number of seconds, and the second is the number of nanoseconds. The sample code is as follows:

package main

import (
    "fmt"
    "time"
)

func main() {
    timestamp := int64(1634028121)
    
    t := time.Unix(timestamp, 0)

    fmt.Println("转换后的时间：", t)
}

In the above example, the timestamp 1634028121 is converted into time and the converted time information is output.

Through the above sample code, we can see that converting date and time in Golang is not complicated. Developers only need to be familiar with the functions and methods provided by the time package. Related operations can be easily completed. I hope the content of this article will be helpful to readers in converting date and time in Golang.

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