杭州-优化本地删除token ，不显示404页面

@@ -136,11 +136,13 @@ layui.define(['laytpl', 'layer'], function(exports){
                 return;
             }
             if(e.status == '401'){
-                layer.msg("登录凭证失效，请重新登录验证！", {
-                    icon: 7, time: 3000
-                },function () {
-                    view.exit();
-                });
+                if(localStorage.getItem('access_token')) {
+                    layer.msg("登录凭证失效，请重新登录验证！", {
+                        icon: 7, time: 3000
+                    }, function () {
+                        view.exit();
+                    });
+                }
             }else if(e.status == '500'){
                 layer.msg("服务异常，请联系管理员!</br>错误信息："+e.responseJSON["resp_msg"], {
                     icon: 7, time: 5000
@@ -254,7 +256,15 @@ layui.define(['laytpl', 'layer'], function(exports){
         }
 
         if(e.status === 404){
-          that.render('template/tips/404');
+            if(!localStorage.getItem('access_token')) {
+                layer.msg("登录凭证失效，请重新登录验证！", {
+                    icon: 7, time: 3000
+                }, function () {
+                    view.exit()
+                });
+            } else {
+                that.render('template/tips/404');
+            }
         } else {
           that.render('template/tips/error');
         }