备注：jwt生成token，无法实现登出，可以考虑redis辅助实现登出
package certificate
import (
"errors"
"time"
jwt "github.com/dgrijalva/jwt-go"
)
// GenToken 生成token
func GenToken(userName, secretKey string) (string, error) {
claim := jwt.MapClaims{
"exp": time.Now().Add(time.Hour * time.Duration(1)).Unix(),
"username": userName,
"nbf": time.Now().Unix(),
"iat": time.Now().Unix(),
}
token := jwt.NewWithClaims(jwt.SigningMethodHS256, claim)
tokenStr, err := token.SignedString([]byte(secretKey))
if err != nil {
return "", err
}
return tokenStr, nil
}
// VerfyToken 验证token
func VerfyToken(token, secretKey string) (string, error) {
tokenObj, err := jwt.Parse(token, func(*jwt.Token) (interface{}, error) {
return []byte(secretKey), nil
})
if err != nil {
return "", err
}
claims, ok := tokenObj.Claims.(jwt.MapClaims)
if !ok {
return "", errors.New("cannot convert claim to mapclaim")
}
if !tokenObj.Valid {
return "", errors.New("token is invalid")
}
return claims["username"].(string), nil
}
