374 lines
8.4 KiB
Markdown
374 lines
8.4 KiB
Markdown
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# DESIGN - 前端 UI 项目架构设计
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## 🏗️ 整体架构图
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```mermaid
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graph TB
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subgraph "前端项目 (localhost:3000)"
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A[Vue 3 App] --> B[Vue Router]
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A --> C[Element Plus UI]
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A --> D[Axios HTTP Client]
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B --> E[Dashboard View]
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B --> F[User Management View]
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B --> G[Product Management View]
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F --> H[User List Component]
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F --> I[User Form Component]
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G --> J[Product List Component]
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G --> K[Product Form Component]
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H --> L[Table Component]
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I --> M[Form Component]
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J --> L
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K --> M
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D --> N[API Service Layer]
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N --> O[User API]
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N --> P[Product API]
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end
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subgraph "后端项目 (localhost:8000)"
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Q[FastAPI App]
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R[User Endpoints]
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S[Product Endpoints]
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T[MySQL Database]
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Q --> R
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Q --> S
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R --> T
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S --> T
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end
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O -.->|HTTP Requests| R
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P -.->|HTTP Requests| S
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style A fill:#42b883
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style Q fill:#009688
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style T fill:#336791
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```
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## 🏛️ 分层设计
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### 1. 表现层 (Presentation Layer)
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- **Views/Pages**: 页面级组件，对应路由
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- **Components**: 可复用的 UI 组件
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- **Layout**: 布局组件 (侧边栏、头部、内容区域)
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### 2. 服务层 (Service Layer)
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- **API Services**: HTTP 请求封装
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- **Utils**: 通用工具函数
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- **Constants**: 常量定义
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### 3. 路由层 (Router Layer)
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- **Route Configuration**: 路由配置
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- **Navigation Guards**: 路由守卫 (如需要)
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### 4. 状态层 (State Layer)
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- **Local State**: 组件内部状态 (Composition API)
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- **Props/Emit**: 组件间通信
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## 📦 核心组件设计
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### 布局组件
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```mermaid
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graph TB
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A[AppLayout] --> B[AppHeader]
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A --> C[AppSidebar]
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A --> D[AppMain]
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B --> E[Logo]
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B --> F[User Info]
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C --> G[Navigation Menu]
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G --> H[Dashboard Link]
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G --> I[Users Link]
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G --> J[Products Link]
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D --> K[Router View]
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```
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### 页面组件架构
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```mermaid
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graph TB
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subgraph "用户管理页面"
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A[UserManagement] --> B[UserList]
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A --> C[UserDialog]
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B --> D[DataTable]
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B --> E[TableActions]
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C --> F[UserForm]
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C --> G[FormActions]
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end
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subgraph "产品管理页面"
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H[ProductManagement] --> I[ProductList]
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H --> J[ProductDialog]
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I --> K[DataTable]
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I --> L[TableActions]
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J --> M[ProductForm]
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J --> N[FormActions]
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end
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```
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## 🔌 接口契约定义
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### API Service 接口
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```javascript
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// api/user.js
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export const userAPI = {
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// 获取用户列表
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getUsers: () => axios.get('/api/v1/users/'),
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// 获取单个用户
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getUser: (id) => axios.get(`/api/v1/users/${id}`),
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// 创建用户
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createUser: (userData) => axios.post('/api/v1/users/', userData),
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// 更新用户
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updateUser: (id, userData) => axios.put(`/api/v1/users/${id}`, userData),
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// 删除用户
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deleteUser: (id) => axios.delete(`/api/v1/users/${id}`)
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}
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// api/product.js
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export const productAPI = {
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// 获取产品列表
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getProducts: () => axios.get('/api/v1/products/'),
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// 获取单个产品
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getProduct: (id) => axios.get(`/api/v1/products/${id}`),
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// 创建产品
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createProduct: (productData) => axios.post('/api/v1/products/', productData),
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// 更新产品
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updateProduct: (id, productData) => axios.put(`/api/v1/products/${id}`, productData),
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// 删除产品
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deleteProduct: (id) => axios.delete(`/api/v1/products/${id}`)
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}
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```
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### 组件 Props 接口
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```javascript
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// components/DataTable.vue Props
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interface DataTableProps {
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data: Array<Object> // 表格数据
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columns: Array<Object> // 列配置
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loading: Boolean // 加载状态
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actions: Array<Object> // 操作按钮配置
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}
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// components/UserForm.vue Props
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interface UserFormProps {
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user: Object | null // 用户数据 (编辑模式)
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mode: 'create' | 'edit' // 表单模式
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loading: Boolean // 提交状态
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}
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// components/ProductForm.vue Props
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interface ProductFormProps {
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product: Object | null // 产品数据 (编辑模式)
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mode: 'create' | 'edit' // 表单模式
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loading: Boolean // 提交状态
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}
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```
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## 📊 数据流向图
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```mermaid
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sequenceDiagram
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participant U as User
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participant V as Vue Component
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participant A as API Service
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participant B as Backend API
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participant D as Database
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U->>V: 用户操作 (点击、提交)
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V->>A: 调用 API 方法
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A->>B: HTTP 请求
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B->>D: 数据库操作
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D-->>B: 返回数据
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B-->>A: HTTP 响应
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A-->>V: 返回结果
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V-->>U: 更新界面
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```
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## 🚨 异常处理策略
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### HTTP 错误处理
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```javascript
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// utils/request.js - Axios 拦截器
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axios.interceptors.response.use(
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response => response,
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error => {
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const { status, data } = error.response
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switch (status) {
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case 400:
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ElMessage.error(data.detail || '请求参数错误')
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break
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case 404:
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ElMessage.error('资源不存在')
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break
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case 409:
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ElMessage.error(data.detail || '数据冲突')
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break
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case 500:
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ElMessage.error('服务器内部错误')
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break
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default:
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ElMessage.error('网络连接异常')
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}
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return Promise.reject(error)
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}
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)
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```
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### 表单验证策略
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```javascript
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// 用户表单验证规则
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const userFormRules = {
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username: [
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{ required: true, message: '请输入用户名', trigger: 'blur' },
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{ min: 3, max: 20, message: '用户名长度为 3-20 个字符', trigger: 'blur' }
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],
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email: [
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{ required: true, message: '请输入邮箱地址', trigger: 'blur' },
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{ type: 'email', message: '请输入正确的邮箱地址', trigger: 'blur' }
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]
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}
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// 产品表单验证规则
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const productFormRules = {
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name: [
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{ required: true, message: '请输入产品名称', trigger: 'blur' },
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{ min: 2, max: 50, message: '产品名称长度为 2-50 个字符', trigger: 'blur' }
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],
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price: [
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{ required: true, message: '请输入产品价格', trigger: 'blur' },
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{ type: 'number', min: 0, message: '价格必须大于等于 0', trigger: 'blur' }
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],
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stock: [
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{ required: true, message: '请输入库存数量', trigger: 'blur' },
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{ type: 'integer', min: 0, message: '库存必须为非负整数', trigger: 'blur' }
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]
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}
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```
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## 📱 响应式设计
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### 断点设计
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```css
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/* 响应式断点 */
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/* 手机端 */
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@media (max-width: 768px) {
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.sidebar { display: none; }
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.main-content { margin-left: 0; }
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}
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/* 平板端 */
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@media (min-width: 769px) and (max-width: 1024px) {
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.sidebar { width: 200px; }
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.main-content { margin-left: 200px; }
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}
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/* 桌面端 */
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@media (min-width: 1025px) {
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.sidebar { width: 250px; }
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.main-content { margin-left: 250px; }
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}
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```
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### 组件响应式
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- 表格组件支持横向滚动
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- 表单组件自适应布局
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- 按钮组合在小屏幕下垂直排列
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## 🛠️ 开发环境配置
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### Vite 配置
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```javascript
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// vite.config.js
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export default {
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server: {
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port: 3000,
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proxy: {
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'/api': {
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target: 'http://localhost:8000',
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changeOrigin: true
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}
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}
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},
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build: {
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outDir: 'dist',
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assetsDir: 'assets'
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}
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}
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```
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### 环境变量
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```bash
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# .env.development
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VITE_API_BASE_URL=http://localhost:8000
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VITE_APP_TITLE=FastAPI Demo - 管理后台
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# .env.production
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VITE_API_BASE_URL=https://your-api-domain.com
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VITE_APP_TITLE=FastAPI Demo - 管理后台
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```
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## 🔄 组件生命周期设计
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### 页面组件生命周期
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```javascript
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// views/UserManagement.vue
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export default {
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setup() {
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const users = ref([])
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const loading = ref(false)
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// 页面加载时获取数据
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onMounted(async () => {
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await loadUsers()
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})
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const loadUsers = async () => {
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loading.value = true
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try {
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const response = await userAPI.getUsers()
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users.value = response.data
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} catch (error) {
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console.error('加载用户失败:', error)
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} finally {
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loading.value = false
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}
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}
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return {
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users,
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loading,
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loadUsers
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}
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}
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}
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```
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## 📋 组件复用策略
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### 通用组件设计
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1. **DataTable**: 通用数据表格组件
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2. **FormDialog**: 通用表单对话框组件
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3. **ConfirmDialog**: 通用确认对话框组件
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4. **LoadingOverlay**: 通用加载覆盖层组件
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5. **EmptyState**: 通用空状态组件
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### 业务组件设计
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1. **UserForm**: 用户表单组件
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2. **ProductForm**: 产品表单组件
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3. **UserList**: 用户列表组件
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4. **ProductList**: 产品列表组件
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