jwt

jwt-go

package jwtgo

import (
    "fmt"
    "github.com/dgrijalva/jwt-go"
    "time"
)

const (
    // secretKey 加密key
    secretKey = "Q6jhLn8vsD04WmAR"
)

// expTime token有效时间
var expTime = time.Now().Add(time.Hour * 2).Unix()

// JwtClaims 自定义 Claims 结构体
type JwtClaims struct {
    // 按需求自定义下方参数
    Id   string
    Name string
    Role string
    jwt.StandardClaims
}

// GenerateToken
// 利用JwtClaims生成token字符串
// 加密方式; SHA256
func GenerateToken(id, name, role string) (tokenStr string, err error) {

    jwtClaims := &JwtClaims{
        Id:   id, //用户id
        Name: name,
        Role: role,
        StandardClaims: jwt.StandardClaims{
            ExpiresAt: expTime,
            //Issuer:    issuer, //发行人
        },
    }

    token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwtClaims)
    tokenStr, err = token.SignedString([]byte(secretKey))
    return
}

//ParseToken 解析token
func ParseToken(tokenString string) (*JwtClaims, error) {
    token, err := jwt.ParseWithClaims(tokenString, &JwtClaims{}, 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.(*JwtClaims); ok && token.Valid {
        return claims, nil
    } else {
        return nil, err
    }
}

使用

package main

import (
    "fmt"
    "gotoys/plugins/jwtgo"
    "log"
)

func main() {

    // 生成token
    token, err := jwtgo.GenerateToken(
        "cc6a6e14-2f11-4b61-b077-1b0f7b9c7944",
        "xiao ming",
        "administrator")

    if err != nil {
        log.Printf("%v", err)
    } else {
        fmt.Printf("token:%s\n", token)
    }

    // 解析token
    jwtClaims, err := jwtgo.ParseToken(token)
    if err != nil {
        log.Printf("%v", err)
    } else {
        fmt.Printf("id:%s\nname:%s\nrole:%s\nexp:%d", jwtClaims.Id, jwtClaims.Name, jwtClaims.Role, jwtClaims.ExpiresAt)
    }

}

打印结果

token:eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJJZCI6ImNjNmE2ZTE0LTJmMTEtNGI2MS1iMDc3LTFiMGY3YjljNzk0NCIsIk5hbWUiOiJ4aWFvIG1pbmciLCJSb2xlIjoiYWRtaW5pc3RyYXRvciIsImV4cCI6MTYwODk5Nzk5NH0.RuPNtNzoUQiaRb2qQYgfR2FBoi4rpox3kzMdO_WgUt0
id:cc6a6e14-2f11-4b61-b077-1b0f7b9c7944
name:xiao ming
role:administrator
exp:1608997994