golang利用redis和gin实现保存登录状态校验登录功能

package router
import (
	"fmt"
	"github.com/gin-gonic/gin"
	"hexiao/service"
)
func Router() *gin.Engine {
	r := gin.Default()
	//修改密码
	r.POST("api/user/changepwd", service.ChangePwd)
	//登录
	r.POST("api/user/login", service.Login)
	//设置需要登录验证的一些函数
	IndexGroup := r.Group("/api/index")
	{
		//调用中间件
		IndexGroup.Use(service.AuthMiddleWare())
		IndexGroup.POST("/index", service.IndexInfo)
	}
	return r
}

 
//token存入redis部分代码
token := "xxxxxxxxxxxxxx"
ctx := context.Background()
userID := "online_" + fmt.Sprintf("%d", adminuser2.Id)
time2 := time.Duration(viper.GetInt("timeout.RedisOnlineTime")) * time.Hour
err := utils.Red.Set(ctx, userID, token, time2)
if err != nil {
	fmt.Println("set  err=", err)
}
//取token验证中间件
func AuthMiddleWare() gin.HandlerFunc {
	return func(c *gin.Context) {
		ctx := context.Background()
		userid1 := c.PostForm("user_id")
		token := c.PostForm("token")
		if token == "" {
			c.JSON(200, gin.H{
				"code": 300,
				"data": "",
				"msg":  "请携带token!",
			})
			c.Abort()
			return
		}
		userID := "online_" + userid1
		r, err := utils.Red.Get(ctx, userID).Result()
		if err != nil {
			fmt.Println("err>>>>>>", err)
		}
		if r != token {
			c.JSON(200, gin.H{
				"code": 300,
				"data": "",
				"msg":  "登录失效,请重新登录!",
			})
			c.Abort()
			return
		}
	}
}