localStorage操作统一使用localStorageUtils完成

bookshelfplus-frontend/views/dashboard/component/navbar.html

@@ -16,7 +16,7 @@
 </div>
 <script>
     function logout() {
-        postRequest("/user/logout", { token: localStorage.getItem("token") })
+        postRequest("/user/logout", { token: localStorageUtils.getToken() })
             .then(function (response) {
                 var axiosData = response.data;
                 var status = axiosData.status;
@@ -25,8 +25,7 @@
                 if (status === "success") {
                     console.log(data);
                     if (data) {
-                        localStorage.removeItem("token");
-                        localStorage.removeItem("is_admin");
+                        localStorageUtils.userLogout();
                         location.href = "/login";
                     } else {
                         alert("退出登录失败");
@@ -39,8 +38,7 @@
                 console.log(error);
                 var choice = confirm("服务器连接失败，无法正常退出登录，是否要强行退出登录？");
                 if(choice) {
-                    localStorage.removeItem("token");
-                    localStorage.removeItem("is_admin");
+                    localStorageUtils.userLogout();
                     location.href = "/login";
                 }
             });