gin结合jwt-go快速上手

alsarkd

已于 2024-11-18 09:59:06 修改

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文章标签： gin golang 开发语言

于 2024-11-17 13:32:38 首次发布

本文链接：https://blog.youkuaiyun.com/alsark/article/details/143672691

jwt简单使用

下载

go get -u github.com/golang-jwt/jwt/v5

构建token

package main

import (
	"fmt"
	"time"

	"github.com/golang-jwt/jwt/v5"
)

func main() {

	mySigningKey := []byte("deb0uuxjjxh32268a2aafb")

	type MyCustomClaims struct {
		Userid int64 `json:"userid"`
		jwt.RegisteredClaims
	}

	// Create claims while leaving out some of the optional fields
	claims := MyCustomClaims{
		122556222222,
		jwt.RegisteredClaims{
			// Also fixed dates can be used for the NumericDate
			ExpiresAt: jwt.NewNumericDate(time.Now().Add(24 * time.Hour)),
			Issuer:    "alsark",
		},
	}

	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
	ss, _ := token.SignedString(mySigningKey)
	fmt.Println(ss)
}

解析token

package main

import (
	"fmt"
	"log"

	"github.com/golang-jwt/jwt/v5"
)

func main() {

	tokenString := "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyaWQiOjEyMjU1NjIyMjIyMiwiaXNzIjoiYWxzYXJrIiwiZXhwIjoxNzMxODUxMTgzfQ.n_8gcQIMMgiR4WFq4DjKrYUqIorSBnyfebIMseOc0-0"

	type MyCustomClaims struct {
		Userid int64 `json:"userid"`
		jwt.RegisteredClaims
	}

	token, err := jwt.ParseWithClaims(tokenString, &MyCustomClaims{}, func(token *jwt.Token) (interface{}, error) {
		return []byte("deb0uuxjjxh32268a2aafb"), nil
	})
	if err != nil {
		log.Fatal(err)
	} else if claims, ok := token.Claims.(*MyCustomClaims); ok {
		fmt.Println(claims.Userid)
	} else {
		log.Fatal("unknown claims type, cannot proceed")
	}

}

B站视频讲解

https://www.bilibili.com/video/BV1zyUBYTErQ/?share_source=copy_web&vd_source=b0fd8606714c39dabe78b6604aff44a3https://www.bilibili.com/video/BV1zyUBYTErQ/?share_source=copy_web&vd_source=b0fd8606714c39dabe78b6604aff44a3

gin结合jwt-go

package main

import (
	"fmt"
	"time"

	"github.com/gin-gonic/gin"
	"github.com/golang-jwt/jwt/v5"
)

func main() {
	r := gin.Default()
	// r.Use(Jwtyz())

	v1 := r.Group("/v1")
	{
		v1.GET("/hqtoken", Hqtoken)
	}

	v2 := r.Group("/v2", Jwtyz())
	{
		v2.GET("/yztoken", Yztoken)
	}

	r.Run() // 监听并在 0.0.0.0:8080 上启动服务
}

// 获取token
func Hqtoken(c *gin.Context) {
	mySigningKey := []byte("Xye8pxrmuM")

	type MyCustomClaims struct {
		Userid string `json:"userid"`
		jwt.RegisteredClaims
	}

	userid := "144551222554"

	claims := MyCustomClaims{
		userid,
		jwt.RegisteredClaims{
			// Also fixed dates can be used for the NumericDate
			ExpiresAt: jwt.NewNumericDate(time.Now().Add(24 * time.Hour)),
			Issuer:    "alsark",
		},
	}

	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
	ss, _ := token.SignedString(mySigningKey)
	fmt.Println(ss)
	c.JSON(200, ss)
}

// 需要token接口
func Yztoken(c *gin.Context) {
	userid, _ := c.Get("userid")
	fmt.Println(userid)

}

// jwt中间件
func Jwtyz() gin.HandlerFunc {
	return func(c *gin.Context) {
		tokenString := c.GetHeader("Authorization")
		if tokenString == "" {
			c.JSON(401, gin.H{"error": "Authorization异常"})
			c.Abort()
			return
		}
		type MyCustomClaims struct {
			Userid string `json:"userid"`
			jwt.RegisteredClaims
		}
		token, err := jwt.ParseWithClaims(tokenString, &MyCustomClaims{}, func(token *jwt.Token) (interface{}, error) {
			return []byte("Xye8pxrmuM"), nil
		})
		if err != nil {
			c.JSON(401, gin.H{"error": "Authorization异常"})
			c.Abort()
			return
		} else if claims, ok := token.Claims.(*MyCustomClaims); ok {
			c.Set("userid", claims.Userid)
		} else {
			c.JSON(401, gin.H{"error": "Authorization异常"})
			c.Abort()
			return
		}
		c.Next()
	}
}