// 可以改成配置方式
var mySigningKey = []byte("AllYourBase")
// MyCustomClaims 定制
type MyCustomClaims struct {
UserID uint `json:"user_id"`
jwt.StandardClaims
}
// SignToken 签发 token
func SignToken(userID uint) (string, error) {
// Create the Claims
claims := &MyCustomClaims{
userID,
jwt.StandardClaims{
ExpiresAt: time.Now().Add(time.Hour * 2).Unix(),
Issuer: "test",
},
}
token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
return token.SignedString(mySigningKey)
}
// ParseToken 解析 token
func ParseToken(tokenString string) (uint, error) {
token, err := jwt.ParseWithClaims(tokenString, &MyCustomClaims{}, func(token *jwt.Token) (interface{}, error) {
return mySigningKey, nil
})
if claims, ok := token.Claims.(*MyCustomClaims); ok && token.Valid {
fmt.Printf("%v %v", claims.UserID, claims.StandardClaims.ExpiresAt)
return claims.UserID, nil
}
return 0, err
}
// JWTAuth 令牌验证,一般写成 gin 的中间件
func JWTAuth() gin.HandlerFunc {
return func(c *gin.Context) {
tokenString := c.Request.Header.Get("Authorization")
if tokenString == "" {
c.JSON(http.StatusUnauthorized, gin.H{
"code": http.StatusUnauthorized,
"msg": "Authorization 不能为空",
})
c.Abort()
return
}
_, err := utils.ParseToken(tokenString)
if err != nil {
c.JSON(http.StatusUnauthorized, gin.H{
"code": http.StatusUnauthorized,
"msg": err.Error(),
})
c.Abort()
return
}
c.Next()
// after request
}
}
// AdminAuth 角色权限验证,一般写成 gin 的中间件
func AdminAuth() gin.HandlerFunc {
return func(c *gin.Context) {
tokenString := c.Request.Header.Get("Authorization")
if tokenString == "" {
c.JSON(http.StatusUnauthorized, gin.H{
"code": http.StatusUnauthorized,
"msg": "Authorization 不能为空",
})
c.Abort()
return
}
userID, err := utils.ParseToken(tokenString)
if err != nil {
c.JSON(http.StatusUnauthorized, gin.H{
"code": http.StatusUnauthorized,
"msg": err.Error(),
})
c.Abort()
return
}
user, err := db.GetUserByID(userID)
if err != nil {
c.JSON(http.StatusUnauthorized, dto.Response{Message: err.Error()})
c.Abort()
return
}
if user.AccountType != "ADMIN" {
c.JSON(http.StatusUnauthorized, dto.Response{Message: "权限不足"})
c.Abort()
return
}
c.Next()
}
}
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