1.把目录“首页”放在第一个菜单位置

2.有二级菜单，例如点击系统管理时 默认选中第一个子菜单--用户管理
3.没有二级菜单，左侧二级不显示，比如首页或以后新增目录
4.新建一个目录，下面没有子菜单，出不来对应的页面

ruoyi-ui/src/components/TopNav/index.vue

@@ -142,12 +142,12 @@ export default {
         // /redirect 路径内部打开
         this.$router.push({ path: key.replace("/redirect", "") });
       } else {
-        // 显示左侧联动菜单
+        // 显示左侧联动菜单顶部菜单
-        this.activeRoutes(key);
+        this.activeRoutes(key,true);
       }
     },
     // 当前激活的路由
-    activeRoutes(key) {
+    activeRoutes(key,isTop) {
       var routes = [];
       if (this.childrenMenus && this.childrenMenus.length > 0) {
         this.childrenMenus.map((item) => {
@@ -157,7 +157,13 @@ export default {
         });
       }
       if(routes.length > 0) {
+        //TODO 第一个默认选中
         this.$store.commit("SET_SIDEBAR_ROUTERS", routes);
+        if(isTop){
+          this.$store.commit("SET_SIDEBAR_ACTIVE_MENU", routes[0].path);
+          let that = this;
+          that.$router.push({path:routes[0].path});
+        }
       }
       return routes;
     },

ruoyi-ui/src/layout/components/TagsView/index.vue

@@ -132,6 +132,7 @@ export default {
     addTags() {
       const { name } = this.$route
       if (name) {
+        this.$store.commit("SET_SIDEBAR_ACTIVE_MENU", this.$route.path);
         this.$store.dispatch('tagsView/addView', this.$route)
       }
       return false
@@ -190,6 +191,7 @@ export default {
       })
     },
     toLastView(visitedViews, view) {
+      console.log("打开了2")
       const latestView = visitedViews.slice(-1)[0]
       if (latestView) {
         this.$router.push(latestView.fullPath)
@@ -205,6 +207,7 @@ export default {
       }
     },
     openMenu(tag, e) {
+      console.log("打开了3",tag,e)
       const menuMinWidth = 105
       const offsetLeft = this.$el.getBoundingClientRect().left // container margin left
       const offsetWidth = this.$el.offsetWidth // container width

ruoyi-ui/src/settings.js

@@ -12,7 +12,7 @@ module.exports = {
   /**
    * 是否显示顶部导航
    */
-  topNav: false,
+  topNav: true,
 
   /**
    * 是否显示 tagsView

ruoyi-ui/src/store/getters.js

@@ -14,5 +14,6 @@ const getters = {
   topbarRouters:state => state.permission.topbarRouters,
   defaultRoutes:state => state.permission.defaultRoutes,
   sidebarRouters:state => state.permission.sidebarRouters,
+  sidebarActiveMenu:state => state.permission.sidebarActiveMenu,
 }
 export default getters

ruoyi-ui/src/store/modules/permission.js

@@ -11,7 +11,8 @@ const permission = {
     addRoutes: [],
     defaultRoutes: [],
     topbarRouters: [],
-    sidebarRouters: []
+    sidebarRouters: [],
+    sidebarActiveMenu: null
   },
   mutations: {
     SET_ROUTES: (state, routes) => {
@@ -31,6 +32,9 @@ const permission = {
     },
     SET_SIDEBAR_ROUTERS: (state, routes) => {
       state.sidebarRouters = routes
+    }
+    ,SET_SIDEBAR_ACTIVE_MENU: (state, sidebarActiveMenu) => {
+      state.sidebarActiveMenu = sidebarActiveMenu
     },
   },
   actions: {