56 lines
1.3 KiB
Go
56 lines
1.3 KiB
Go
package jwt
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import (
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"errors"
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"time"
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"github.com/golang-jwt/jwt/v5"
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)
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var (
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ErrInvalidToken = errors.New("invalid token")
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ErrExpiredToken = errors.New("token has expired")
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)
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type Claims struct {
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UserID int64 `json:"user_id"`
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Username string `json:"username"`
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jwt.RegisteredClaims
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}
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// GenerateToken 生成 JWT token
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func GenerateToken(secretKey string, userID int64, username string, expireDuration time.Duration) (string, error) {
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claims := Claims{
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UserID: userID,
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Username: username,
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RegisteredClaims: jwt.RegisteredClaims{
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ExpiresAt: jwt.NewNumericDate(time.Now().Add(expireDuration)),
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IssuedAt: jwt.NewNumericDate(time.Now()),
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NotBefore: jwt.NewNumericDate(time.Now()),
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},
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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return token.SignedString([]byte(secretKey))
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}
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// ParseToken 解析 JWT token
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func ParseToken(tokenString string, secretKey string) (*Claims, error) {
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token, err := jwt.ParseWithClaims(tokenString, &Claims{}, func(token *jwt.Token) (interface{}, error) {
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return []byte(secretKey), nil
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})
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if err != nil {
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if errors.Is(err, jwt.ErrTokenExpired) {
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return nil, ErrExpiredToken
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}
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return nil, ErrInvalidToken
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}
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if claims, ok := token.Claims.(*Claims); ok && token.Valid {
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return claims, nil
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}
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return nil, ErrInvalidToken
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}
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