package main
import (
"fmt"
"time"
"github.com/dgrijalva/jwt-go"
)
const (
SECRETKEY = "202203021124355xxx" //私钥
)
// 自定义 Claims
type CustomClaims struct {
UserId int64
jwt.StandardClaims
}
func main() {
//生成 token
maxAge := 60 * 60 * 24
customClaims := &CustomClaims{
UserId: 11, //用户 id
StandardClaims: jwt.StandardClaims{
ExpiresAt: time.Now().Add(time.Duration(maxAge) * time.Second).Unix(), // 过期时间，必须设置
Issuer: "root", // 非必须，也可以填充用户名，
},
}
//采用 HMAC SHA256 加密算法
token := jwt.NewWithClaims(jwt.SigningMethodHS256, customClaims)
tokenString, err := token.SignedString([]byte(SECRETKEY))
if err != nil {
fmt.Println(err)
}
fmt.Printf("token: %v\n", tokenString)
fmt.Println("Token=====", tokenString)
//解析 token
ret, err := ParseToken(tokenString)
if err != nil {
fmt.Println(err)
}
fmt.Printf("userinfo: %v\n", ret)
fmt.Println("====创建时间", ret.ExpiresAt)
}
// 解析 token
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, fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
}
return []byte(SECRETKEY), nil
})
if claims, ok := token.Claims.(*CustomClaims); ok && token.Valid {
return claims, nil
} else {
return nil, err
}
}
