59 lines
1.2 KiB
Go
59 lines
1.2 KiB
Go
package jwt
|
|
|
|
import (
|
|
"errors"
|
|
"time"
|
|
|
|
"github.com/golang-jwt/jwt/v5"
|
|
)
|
|
|
|
var (
|
|
// ErrTokenExpired token 已过期
|
|
ErrTokenExpired = errors.New("token已过期")
|
|
// ErrTokenInvalid token 无效
|
|
ErrTokenInvalid = errors.New("token无效")
|
|
)
|
|
|
|
// JWT JWT工具
|
|
type JWT struct {
|
|
secretKey []byte
|
|
expiresIn time.Duration
|
|
}
|
|
|
|
// NewJWT 创建JWT实例
|
|
func NewJWT(secretKey string, expiresIn time.Duration) *JWT {
|
|
return &JWT{
|
|
secretKey: []byte(secretKey),
|
|
expiresIn: expiresIn,
|
|
}
|
|
}
|
|
|
|
// GenerateToken 生成token
|
|
func (j *JWT) GenerateToken(claims jwt.Claims) (string, error) {
|
|
token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
|
|
return token.SignedString(j.secretKey)
|
|
}
|
|
|
|
// ParseToken 解析token
|
|
func (j *JWT) ParseToken(tokenString string, claims jwt.Claims) error {
|
|
token, err := jwt.ParseWithClaims(tokenString, claims, func(token *jwt.Token) (interface{}, error) {
|
|
if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
|
|
return nil, errors.New("unexpected signing method")
|
|
}
|
|
return j.secretKey, nil
|
|
})
|
|
|
|
if err != nil {
|
|
if errors.Is(err, jwt.ErrTokenExpired) {
|
|
return ErrTokenExpired
|
|
}
|
|
return ErrTokenInvalid
|
|
}
|
|
|
|
if !token.Valid {
|
|
return ErrTokenInvalid
|
|
}
|
|
|
|
return nil
|
|
}
|