Go中的系统库中提供了encoding/base64
编码/解码的内置支持.
encoding/base64
提供了四种模式的编码/解码
- StdEncoding:常规编码
- URLEncoding:URL safe 编码
- RawStdEncoding:常规编码,末尾不补 =
- RawURLEncoding:URL safe 编码,末尾不补 =
其中,URL safe 编码,相当于是替换掉字符串中的特殊字符,+ 和 /。
各种模式的编码/解码测试用例如下:
package main
import (
"encoding/base64"
"fmt"
)
func main() {
msg := []byte("Hello world. 你好,世界!")
encoded := base64.StdEncoding.EncodeToString(msg)
fmt.Println(encoded)
// SGVsbG8gd29ybGQuIOS9oOWlve+8jOS4lueVjO+8gQ==
decoded, _ := base64.StdEncoding.DecodeString(encoded)
fmt.Println(string(decoded))
// Hello world. 你好,世界!
encoded = base64.RawStdEncoding.EncodeToString(msg)
fmt.Println(encoded)
// SGVsbG8gd29ybGQuIOS9oOWlve+8jOS4lueVjO+8gQ
decoded, _ = base64.RawStdEncoding.DecodeString(encoded)
fmt.Println(string(decoded))
// Hello world. 你好,世界!
encoded = base64.URLEncoding.EncodeToString(msg)
fmt.Println(encoded)
// SGVsbG8gd29ybGQuIOS9oOWlve-8jOS4lueVjO-8gQ==
decoded, _ = base64.URLEncoding.DecodeString(encoded)
fmt.Println(string(decoded))
// Hello world. 你好,世界!
encoded = base64.RawURLEncoding.EncodeToString(msg)
fmt.Println(encoded)
// SGVsbG8gd29ybGQuIOS9oOWlve-8jOS4lueVjO-8gQ
decoded, _ = base64.RawURLEncoding.DecodeString(encoded)
fmt.Println(string(decoded))
// Hello world. 你好,世界!
}