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JWT GenTokenParseToken

news 2025/7/3 14:37:04

JWT(Json Web Token)

获取Token、解密Token

jwt.go

package jwtimport ("errors""time""github.com/golang-jwt/jwt/v5"
)var jwtSecret = []byte("secret")type CustomClaims struct {Username string `json:"username"`jwt.RegisteredClaims
}func GenToken(username string) (string, error) {claims := CustomClaims{Username: username,RegisteredClaims: jwt.RegisteredClaims{ExpiresAt: jwt.NewNumericDate(time.Now().Add(2 * time.Hour)), // 过期时间IssuedAt:  jwt.NewNumericDate(time.Now()),                    // 签发时间NotBefore: jwt.NewNumericDate(time.Now()),                    // 生效时间Issuer:    "bluebell-app",                                    // 签发人Subject:   "user-token",                                      // token主题},}token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)return token.SignedString(jwtSecret)
}func ParseToken(tokenString string) (*CustomClaims, error) {token, err := jwt.ParseWithClaims(tokenString, &CustomClaims{}, func(token *jwt.Token) (interface{}, error) {if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {return nil, errors.New("unexpected signing method")}return jwtSecret, nil})if err != nil {return nil, err}if claims, ok := token.Claims.(*CustomClaims); ok && token.Valid {return claims, nil}return nil, errors.New("invalid token")
}