How to convert UTF-8 encoding to GBK encoding in golang

With the continuous development of the Internet and the strengthening of globalization trends, cross-language and cross-country software development has become more and more common. This requires us to understand the conversion methods between different character set encodings during the development process. In this article, we will discuss how to convert UTF-8 encoding to GBK encoding in golang.

First of all, let us understand the concepts of UTF-8 and GBK. UTF-8 is a universal character set that supports all Unicode characters. GBK is a character set that is one of the most popular for displaying Chinese characters in Chinese character countries. GBK encoding supports a total of 21,003 Chinese characters and graphic symbols, while UTF-8 supports about 1 million characters worldwide.

In golang, we can use the standard library "unicode/utf8" and "golang.org/x/text/encoding/simplifiedchinese" to convert UTF-8 encoding to GBK encoding.

When using the "unicode/utf8" package to parse UTF-8 encoding, we can use the following code:

package main

import (
    "fmt"
    "unicode/utf8"
)

func main() {
    str := "你好，世界！"
    fmt.Println(utf8.ValidString(str)) // true
}

In the above code, we use utf8.ValidString Function to check whether the given string is UTF-8 encoded. If it is UTF-8 encoding, the function will return true.

Next, we will use the "golang.org/x/text/encoding/simplifiedchinese" package to convert the string to GBK encoding. The following is our code implementation:

package main

import (
    "fmt"
    "golang.org/x/text/encoding/simplifiedchinese"
    "golang.org/x/text/transform"
)

func main() {
    str := "你好，世界！"
    enc := simplifiedchinese.GBK.NewEncoder()
    gbk, _, err := transform.String(enc, str)
    if err != nil {
        panic(err)
    }
    fmt.Println(gbk)
}

In the above code, we use the "GBK.NewEncoder()" function to obtain a GBK encoder that can convert the input string to GBK encoding. Next, we use the "transform.String" function to convert the UTF-8 encoded string to a GBK encoded string. If any error occurs, the "transform.String" function will return an error.

So far, we have successfully converted UTF-8 encoding to GBK encoding and output the converted string.

To summarize, to convert UTF-8 encoding to GBK encoding in golang, we need to use the "unicode/utf8" package to parse UTF-8 encoding and use "golang.org/x/ text/encoding/simplifiedchinese" package converts UTF-8 encoded strings to GBK encoded strings. In this way, in cross-language and cross-country software development, we can better understand the conversion methods between different character set encodings, so as to better develop applications with a more international level.

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