初始模板

src/layouts/DefaultLayout.vue

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+<template>
+  <el-container class="layout">
+    <el-aside :width="isCollapse ? '64px' : '200px'" class="aside">
+      <div class="logo" :class="{ collapsed: isCollapse }">
+        <span v-if="!isCollapse">Vite Admin</span>
+        <span v-else>VA</span>
+      </div>
+
+      <el-menu
+        :default-active="activeMenu"
+        :collapse="isCollapse"
+        router
+        class="menu"
+      >
+        <SidebarItem :routes="menuRoutes" />
+      </el-menu>
+    </el-aside>
+
+    <el-container>
+      <el-header class="header">
+        <div class="header-left">
+          <el-icon class="toggle-btn" @click="toggle">
+            <Fold v-if="!isCollapse" />
+            <Expand v-else />
+          </el-icon>
+        </div>
+        <div class="header-right">
+          <div class="theme-toggle">
+            <el-switch
+              :model-value="themeStore.isDark"
+              class="dark-mode-switch"
+              :active-icon="Moon"
+              :inactive-icon="Sunny"
+              @change="themeStore.toggleTheme"
+            />
+          </div>
+        </div>
+      </el-header>
+
+      <el-main class="main">
+        <router-view />
+      </el-main>
+    </el-container>
+  </el-container>
+</template>
+
+<script setup lang="ts">
+import { ref, computed } from 'vue'
+import { useRoute, useRouter } from 'vue-router'
+import { Fold, Expand, Moon, Sunny } from '@element-plus/icons-vue'
+import SidebarItem from '../components/SidebarItem.vue'
+import { useThemeStore } from '../stores/theme'
+
+const isCollapse = ref(false)
+const route = useRoute()
+const router = useRouter()
+const themeStore = useThemeStore()
+
+const toggle = () => (isCollapse.value = !isCollapse.value)
+
+const activeMenu = computed(() => route.path)
+
+/**
+ * 获取菜单路由，直接使用配置的路由结构
+ */
+const menuRoutes = computed(() => {
+  // 直接返回路由配置中的子路由
+  const mainRoute = router.options.routes.find(r => r.path === '/')
+  return mainRoute?.children || []
+})
+</script>
+
+<style scoped>
+.layout {
+  height: 100vh;
+}
+
+.aside {
+  background-color: var(--aside-bg);
+  transition: width 0.3s;
+  overflow: hidden;
+}
+
+.logo {
+  height: 60px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  color: #fff;
+  font-size: 18px;
+  font-weight: bold;
+  background-color: var(--aside-hover);
+  transition: all 0.3s;
+}
+
+.logo.collapsed {
+  font-size: 16px;
+}
+
+.menu {
+  border-right: none;
+  background-color: var(--aside-bg);
+}
+
+.menu :deep(.el-menu-item) {
+  color: var(--aside-text);
+  background-color: var(--aside-bg);
+}
+
+.menu :deep(.el-menu-item:hover) {
+  background-color: var(--aside-hover) !important;
+  color: #fff;
+}
+
+.menu :deep(.el-menu-item.is-active) {
+  background-color: var(--aside-active) !important;
+  color: #fff;
+}
+
+.menu :deep(.el-sub-menu__title) {
+  color: var(--aside-text);
+  background-color: var(--aside-bg);
+}
+
+.menu :deep(.el-sub-menu__title:hover) {
+  background-color: var(--aside-hover) !important;
+  color: #fff;
+}
+
+.header {
+  background-color: var(--header-bg);
+  border-bottom: 1px solid var(--border-color);
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 0 20px;
+}
+
+.header-left {
+  display: flex;
+  align-items: center;
+}
+
+.toggle-btn {
+  font-size: 20px;
+  cursor: pointer;
+  color: var(--text-color);
+  transition: color 0.3s;
+}
+
+.toggle-btn:hover {
+  color: var(--aside-active);
+}
+
+.header-right {
+  display: flex;
+  align-items: center;
+}
+
+.theme-toggle {
+  display: flex;
+  align-items: center;
+}
+
+.dark-mode-switch {
+  --el-switch-on-color: #409eff;
+  --el-switch-off-color: #dcdfe6;
+}
+
+.main {
+  background-color: var(--main-bg);
+  padding: 20px;
+}
+</style>