golang项目中加入token方式

go get github.com/golang-jwt/jwt/v4

func GenerateJwt() string {
	log := logrus.WithFields(logrus.Fields{
		"func": "GenerateJwt",
	})
	token := jwt.New(jwt.SigningMethodHS256)
    //jwt.New()创建一个新的JWT对象，使用HS256算法对其进行签名

	claims := make(jwt.MapClaims)
	claims["exp"] = time.Now().Add(time.Hour * time.Duration(common.TokenDuration)).Unix()
	claims["iat"] = time.Now().Unix()
	token.Claims = claims
    //创建JWT（JSON Web Token）的载荷部分，并声明token的过期事件和创建时间。

	tokenString, err := token.SignedString([]byte(common.SecretKey))
    //使用密钥对jwt进行签名，并生成toekn字符串
	if err != nil {
		log.Errorf("GenerateJwt err:%v", err)
	}

	return tokenString
}

	if user.Phone != "" {
		if judge := sql.IfadminPhone(c, &user, log); judge {
			token := gentoken.GenerateJwt()//token生成函数
			c.JSON(200, gin.H{"message": "Login successful", "token": token})  //返回给用户token
			return
		}}

{
    "message": "Login successful",
    "token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE3MDkyNTkzMDQsImlhdCI6MTcwOTI1NTcwNH0.zc3DznaTQxOZMqlloS2dSAVC-AgbrE9FId2TQE03_uQ"
}

func Router() *gin.Engine {
	r := gin.Default()
	r.POST("/user/login", service.Login)
	r.POST("/user/register", service.Register)

	auth := r.Group("/")
	auth.Use(gentoken.AuthMiddleware())
	{
		auth.GET("/index", service.GetIndex)
		auth.GET("/user/getUserList", service.GetUserList)
		auth.GET("/user/findUserByName", service.FindUserByName)
		auth.GET("/user/delete", service.DeleteUser) //删除指定用户名的用户
		auth.POST("/user/update", service.UpdateUser)

		//发送消息
		auth.GET("/user/sendUserMsg", service.SendUserMsg)
		auth.GET("/user/sendMsg", service.SendMsg)
	}}

func AuthMiddleware() gin.HandlerFunc {
	return func(c *gin.Context) {
		tokenString := c.GetHeader("Authorization")
		if tokenString == "" {
			c.AbortWithStatus(http.StatusUnauthorized)
			return
		}

		token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
			return []byte(common.SecretKey), nil
		})

		if err == nil && token.Valid {
			c.Next()
		} else {
			c.AbortWithStatus(http.StatusUnauthorized)
		}
	}
}