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jwt.go
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jwt.go
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package midlleware
import (
"github.com/danzhuxia/ginblog/utils"
"github.com/danzhuxia/ginblog/utils/errmsg"
"github.com/dgrijalva/jwt-go"
"github.com/gin-gonic/gin"
"net/http"
"strings"
"time"
)
var JwtKey = []byte(utils.JwtKey)
type MyClaims struct {
UserName string `json:"username"`
jwt.StandardClaims
}
var code int
// 生成Token
func SetToken(username string) (string, int) {
expireTime := time.Now().Add(10 * time.Hour)
Claim := MyClaims{
UserName: username,
StandardClaims: jwt.StandardClaims{
ExpiresAt: expireTime.Unix(),
Issuer: "ginblog",
},
}
reqClaim := jwt.NewWithClaims(jwt.SigningMethodHS256, Claim)
token, err := reqClaim.SignedString(JwtKey)
if err != nil {
return "", errmsg.ERROR
}
return token, errmsg.SUCCESS
}
//验证Token
func CheckToken(token string) (*MyClaims, int) {
setToken, _ := jwt.ParseWithClaims(token, &MyClaims{},
func(token *jwt.Token) (interface{}, error) {
return JwtKey, nil
})
if key, _ := setToken.Claims.(*MyClaims); setToken.Valid {
return key, errmsg.SUCCESS
} else {
return nil, errmsg.ERROR
}
}
//JwtMid
func JwtMid() gin.HandlerFunc {
return func(context *gin.Context) {
tokenHandler := context.Request.Header.Get("Authorization")
//code = errmsg.SUCCESS
if tokenHandler == "" {
code = errmsg.ErrorTokenNotExist
context.JSON(http.StatusOK, gin.H{
"code": code,
"message": errmsg.GetErrMsg(code),
})
context.Abort()
return
}
checkToken := strings.SplitN(tokenHandler, " ", 2)
if len(checkToken) != 2 && checkToken[0] != "Bearer" {
code = errmsg.ErrorTokenTypeWrong
context.JSON(http.StatusOK, gin.H{
"code": code,
"message": errmsg.GetErrMsg(code),
})
context.Abort()
return
}
key, Tcode := CheckToken(checkToken[1])
if Tcode == errmsg.ERROR {
code = errmsg.ErrorTokenWrong
context.JSON(http.StatusOK, gin.H{
"code": code,
"message": errmsg.GetErrMsg(code),
})
context.Abort()
return
}
if time.Now().Unix() > key.ExpiresAt {
code = errmsg.ErrorTokenRuntime
context.JSON(http.StatusOK, gin.H{
"code": code,
"message": errmsg.GetErrMsg(code),
})
context.Abort()
return
}
context.Set("username", key.UserName)
context.Next()
}
}