详解golang中常用的文件编码转换方法

func convertUTF16ToUTF8(inputFilePath, outputFilePath string) error {
    // 读取UTF-16编码的输入文件
    inputBytes, err := ioutil.ReadFile(inputFilePath)
    if err != nil {
        return err
    }

    // 将UTF-16编码的byte数组转换为UTF-8编码的byte数组
    utf8Bytes := utf16.Decode(inputBytes)

    // 将UTF-8编码的byte数组写入输出文件
    err = ioutil.WriteFile(outputFilePath, utf8Bytes, 0666)
    if err != nil {
        return err
    }

    return nil
}

func convertGBKToUTF8(inputFilePath, outputFilePath string) error {
    // 读取GBK编码的csv文件
    inFile, err := os.OpenFile(inputFilePath, os.O_RDONLY, 0666)
    if err != nil {
        return err
    }
    defer inFile.Close()
    r := csv.NewReader(inFile)
    r.Comma = ','

    // 将GBK编码的csv文件逐行读取并转换为UTF-8编码的csv文件
    rows, err := r.ReadAll()
    if err != nil {
        return err
    }

    // 将UTF-8编码的csv文件写入输出文件
    outFile, err := os.Create(outputFilePath)
    if err != nil {
        return err
    }
    defer outFile.Close()
    w := csv.NewWriter(outFile)
    w.Comma = ','
    for _, row := range rows {
        utf8Row := make([]string, len(row))
        for i, v := range row {
            utf8Row[i] = v
        }
        w.Write(utf8Row)
    }
    w.Flush()

    return nil
}