优化系统提示，修改单点登陆bug

src/api/http.ts

@@ -45,20 +45,17 @@ class Http {
 
         /* 响应拦截 */
         this.service.interceptors.response.use((response: AxiosResponse<any>) => {
+            if (response.data.code == 99998) {
+                layer.msg('会话超时, 请重新登录!', { icon: 2 });
+                router.push('/login');
+                return;
+            }
             switch (response.data.code) {
                 case 1:
                     return response.data;
                 case 500:
                     return response.data;
-                case 99998:
-                    layer.confirm(
-                    '会话超时, 请重新登录',
-                    { icon : 2, yes: function(){
-                        router.push('/login');
-                        layer.closeAll()
-                    }});
-                    return response.data;
-                default:
+                case 0:
                     return response.data;
             }
         }, error => {