package main import ( "encoding/base64" "fmt" "unicode/utf16" "unicode/utf8" ) func main() { // 转码前的unicode字符串 unicodeStr := "你好，世界！" // 将unicode字符串转为UTF-8字节切片 utf8Bytes := make([]byte, len(unicodeStr)*3) utf8Len := utf8.EncodeRune(utf8Bytes, rune(unicodeStr[0])) utf8Bytes = utf8Bytes[:utf8Len] for _, r := range unicodeStr[1:] { utf8Len = utf8.EncodeRune(utf8Bytes[utf8Len:], r) utf8Bytes = utf8Bytes[:utf8Len] } // 将UTF-8字节切片进行base64编码 base64Str := base64.StdEncoding.EncodeToString(utf8Bytes) // 将base64编码后的字符串解码为UTF-8字节切片 decodedBytes, err := base64.StdEncoding.DecodeString(base64Str) if err != nil { fmt.Println("base64 decode error:", err) return } // 将UTF-8字节切片转为unicode字符串 utf16Runes := utf16.Decode(decodedBytes) unicodeRunes := utf16.DecodeRune(utf16Runes) unicodeStr = string(unicodeRunes) fmt.Println("unicodeStr:", unicodeStr) fmt.Println("base64Str:", base64Str) fmt.Println("decodedBytes:", decodedBytes) }