package main

import (
	"github.com/golang-jwt/jwt/v4"
	log "github.com/sirupsen/logrus"
)

var data = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzY2hvb2xpZCI6Ijk5OSIsImV4cCI6MTY3MDcxMzk3OSwidXNlcm5hbWUiOiLllJDlrociLCJjb3Vyc2VzIjoiLDMyLDQsMzgsMzcsNDIsNDMsOSw0MCw0MSwxMSwxMiwxMyw0NCwxNCwxOSwyNiwyOSIsInNjaG9vbG5hbWUiOiLluIzlhoDlnKjnur8iLCJ1c2VyaWQiOiJjZ190YW5neXUiLCJjb2xsZWdlbmFtZSI6IuWtpuefpeahpSIsImhvbWVwYWdlIjoiaHR0cHM6Ly85OTkuYmQuZWR1Y2cubmV0LyJ9.fB3-L-gEOXVlyjjZqphkORtGCRK4ZWI9RNxO4-FULhw"
var key = "!bd832W0@CG"

type CGJWTClaim struct {
	jwt.RegisteredClaims
	Userid string
}

func main() {
	jwtResult, err := jwt.ParseWithClaims(data, &CGJWTClaim{}, func(token *jwt.Token) (i interface{}, err error) {
		return []byte(key), nil
	})
	if err != nil {
		log.WithError(err).Error("err1")
	}
	if claims, ok := jwtResult.Claims.(*CGJWTClaim); ok && jwtResult.Valid { // 校验token
		log.Println("user id", claims.Userid)
	} else {
		log.Error("err 2")
	}
}