Learn golang coding conversion method from scratch

Learn the encoding conversion method of Go language from scratch

With the development and popularization of information technology, programming has become a hot career field. In programming, it is often necessary to convert between different character encodings, such as converting a UTF-8 encoded string into a GBK encoded string, which requires the use of related functions provided in the Go language. This article will introduce how to perform encoding conversion in the Go language from scratch, and attach corresponding code examples to help readers quickly master this skill.

1. Character encoding and conversion in Go language

In Go language, character encoding is a very important concept. Strings in the Go language use UTF-8 encoding by default, but in some specific scenarios, the string may need to be converted to other encodings, such as GBK, ISO-8859-1, etc. Go language provides some standard library functions to help us convert between character encodings.

2. Sample code: Convert UTF-8 to GBK

Let’s look at a practical example to demonstrate how to convert a UTF-8 encoded string to a GBK encoded string. First, we need to import the relevant packages:

package main

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

Then, write a function to convert UTF-8 to GBK:

func UTF8ToGBK(s string) (string, error) {
    reader := transform.NewReader(bytes.NewReader([]byte(s)), simplifiedchinese.GBK.NewEncoder())
    data, err := ioutil.ReadAll(reader)
    if err != nil {
        return "", err
    }
    return string(data), nil
}

Next, we call this function in the main function, and Output the converted result:

func main() {
    utf8Str := "Hello 世界"
    gbkStr, err := UTF8ToGBK(utf8Str)
    if err != nil {
        fmt.Println("转换失败：", err)
        return
    }
    fmt.Println("UTF-8字符串：", utf8Str)
    fmt.Println("转换为GBK字符串：", gbkStr)
}

After executing the above code, the output result is as follows:

UTF-8字符串：Hello 世界
转换为GBK字符串：Hello 世界

In this way, we have successfully converted a UTF-8 encoded string to GBK encoded string. Through the above code examples, readers can clearly understand the method of character encoding conversion in Go language, and can also modify the corresponding code according to actual needs. I hope readers will continue to deepen their understanding of Go language encoding conversion through practice, and be more comfortable handling character encoding conversion in actual work.

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