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Jwt.go
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Jwt.go
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// JSON WEB TOKEN 层
package jwt
import (
"time"
"github.com/1340691923/xwl_bi/model"
"github.com/1340691923/xwl_bi/platform-basic-libs/my_error"
"github.com/1340691923/xwl_bi/platform-basic-libs/util"
jwt "github.com/golang-jwt/jwt"
)
type Claims struct {
UserID int32 `json:"id"`
Username string `json:"username"`
RealName string `json:"real_name"`
RoleId int32 `json:"role_id"`
jwt.StandardClaims
}
//生成token
func GenerateToken(gmUser model.GmUserModel) (string, error) {
nowTime := time.Now()
expireTime := nowTime.Add(24 * time.Hour) //token过期时间24小时
//加入保存信息
claims := Claims{
gmUser.ID,
gmUser.Username,
gmUser.Realname,
gmUser.RoleId,
jwt.StandardClaims{
ExpiresAt: expireTime.Unix(),
Issuer: "xiao-wen-long",
},
}
tokenClaims := jwt.NewWithClaims(jwt.SigningMethodHS256, claims) //jwt.SigningMethodHS256 加密规则
/*NewWithClaims(method SigningMethod, claims Claims),method对应着SigningMethodHMAC struct{}
,其包含SigningMethodHS256、SigningMethodHS384、SigningMethodHS512三种crypto.Hash方案
*/
token, err := tokenClaims.SignedString(util.Str2bytes(model.GlobConfig.Manager.JwtSecret)) // SignedString 该方法内部生成签名字符串,再用于获取完整、已签名的token
if err != nil {
err = my_error.NewBusiness(TOKEN_ERROR, ERROR_AUTH_TOKEN)
return token, err
}
return token, err
}
//解析token
func ParseToken(token string) (*Claims, error) {
tokenClaims, err := jwt.ParseWithClaims(token, &Claims{}, func(token *jwt.Token) (interface{}, error) { //ParseWithClaims 用于解析鉴权的声明,方法内部主要是具体的解码和校验的过程,最终返回*Token
return util.Str2bytes(model.GlobConfig.Manager.JwtSecret), nil
})
if tokenClaims != nil {
if claims, ok := tokenClaims.Claims.(*Claims); ok && tokenClaims.Valid { //Valid 验证基于时间的声明exp, iat, nbf,注意如果没有任何声明在令牌中,仍然会被认为是有效的。并且对于时区偏差没有计算方法
return claims, nil
}
}
return nil, err
}