feat(security):增加用于确定用户登录情况的中间件。

controller/user.go

@@ -1,9 +1,11 @@
 package controller
 
 import (
+	"electricity_bill_calc/cache"
 	"electricity_bill_calc/exceptions"
 	"electricity_bill_calc/model"
 	"electricity_bill_calc/response"
+	"electricity_bill_calc/security"
 	"electricity_bill_calc/service"
 	"errors"
 	"net/http"
@@ -22,6 +24,7 @@ func InitializeUserController(router *gin.Engine) {
 		Router: router,
 	}
 	UserController.Router.POST("/login", UserController.Login)
+	UserController.Router.DELETE("/logout", security.MustAuthenticated, UserController.Logout)
 }
 
 type LoginFormData struct {
@@ -59,3 +62,18 @@ func (_UserController) Login(c *gin.Context) {
 	}
 	result.LoginSuccess(session)
 }
+
+func (_UserController) Logout(c *gin.Context) {
+	result := response.NewResult(c)
+	session, exists := c.Get("session")
+	if !exists {
+		result.Success("用户会话已结束。")
+		return
+	}
+	_, err := cache.ClearSession(session.(*model.Session).Token)
+	if err != nil {
+		result.Error(http.StatusInternalServerError, err.Error())
+		return
+	}
+	result.Success("用户已成功登出系统。")
+}