package main
import (
"github.com/dgrijalva/jwt-go"
"log"
"fmt"
"errors"
"time"
)
// 一些常量
var (
TokenExpired error = errors.New("Token is expired")
TokenNotValidYet error = errors.New("Token not active yet")
TokenMalformed error = errors.New("That's not even a token")
TokenInvalid error = errors.New("Couldn't handle this token:")
SignKey string = "newtrekWang"
)
//token 签名
type JWT struct {
SigningKey []byte
}
//Payload 结构体
type CustomClaims struct {
Name string `json:"name"`
Password string `json:"password"`
jwt.StandardClaims
}
//创建token
func (j *JWT) CreateToken(claims CustomClaims) (string, error) {
token := jwt.New(jwt.SigningMethodHS256)
token.Claims = claims
res, err := token.SignedString(j.SigningKey)
if err != nil {
fmt.Println(err)
}
return res, err
}
//创建token
func generateToken() {
j := &JWT{[]byte("man")}
claims := CustomClaims{
"shenxiaojun",
"9552095520c",
jwt.StandardClaims{
//NotBefore: int64(time.Now().Unix() - 60),
ExpiresAt: int64(time.Now().Unix() + 60),
Issuer: "man",
},
}
token, err := j.CreateToken(claims)
if err != nil {
fmt.Println("is error")
}
fmt.Println(token)
}
//解析token
func CheckJWT(tokenString string) (*CustomClaims,error) {
j := &JWT{[]byte("man")}
token, err := jwt.ParseWithClaims(tokenString, &CustomClaims{}, func(token *jwt.Token) (interface{}, error) {
return j.SigningKey, nil
})
if err != nil {
return nil,err
}
if claims, ok := token.Claims.(*CustomClaims); ok && token.Valid {
return claims,nil
} else {
return nil,TokenExpired
}
}
func main() {
// generateToken()
stoken := "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJuYW1lIjoic2hlbnhpYW9qdW4iLCJwYXNzd29yZCI6Ijk1NTIwOTU1MjBjIiwiZXhwIjoxNTg3ODY5MTgzLCJpc3MiOiJtYW4ifQ.tUTQM-ANNh4oWBGDv8nQUTPb6XR900IhELteEUVUCsM"
ret,err := CheckJWT(stoken)
if err == nil {
fmt.Println(ret.Name)
} else {
fmt.Println(err)
}
}
标签:err,nil,JWT,jwt,token,error,Go,Gin
From: https://www.cnblogs.com/snakej/p/17528441.html