day07-03.Layout模块

基本结构和样式reset

结构创建

image.png

实现步骤

1. 打开 antd/Layout 布局组件文档，找到示例：顶部-侧边布局-通栏

2. 拷贝示例代码到我们的 Layout 页面中

3. 分析并调整页面布局

代码实现 pages/Layout/index.js

import { Layout, Menu, Popconfirm } from 'antd'
import {
  HomeOutlined,
  DiffOutlined,
  EditOutlined,
  LogoutOutlined,
} from '@ant-design/icons'
import './index.scss'

const { Header, Sider } = Layout

const items = [
  {
    label: '首页',
    key: '1',
    icon: <HomeOutlined />,
  },
  {
    label: '文章管理',
    key: '2',
    icon: <DiffOutlined />,
  },
  {
    label: '创建文章',
    key: '3',
    icon: <EditOutlined />,
  },
]

const GeekLayout = () => {
  return (
    <Layout>
      <Header className="header">
        <div className="logo" />
        <div className="user-info">
          <span className="user-name">柴柴老师</span>
          <span className="user-logout">
            <Popconfirm title="是否确认退出？" okText="退出" cancelText="取消">
              <LogoutOutlined /> 退出
            </Popconfirm>
          </span>
        </div>
      </Header>
      <Layout>
        <Sider width={200} className="site-layout-background">
          <Menu
            mode="inline"
            theme="dark"
            defaultSelectedKeys={['1']}
            items={items}
            style={{ height: '100%', borderRight: 0 }}></Menu>
        </Sider>
        <Layout className="layout-content" style={{ padding: 20 }}>
          内容
        </Layout>
      </Layout>
    </Layout>
  )
}
export default GeekLayout

pages/Layout/index.scss

.ant-layout {
  height: 100%;
}

.header {
  padding: 0;
}

.logo {
  width: 200px;
  height: 60px;
  background: url('~@/https://cdn.jsdelivr.net/npm/itheima-react/assets/logo.png') no-repeat center / 160px auto;
}

.layout-content {
  overflow-y: auto;
}

.user-info {
  position: absolute;
  right: 0;
  top: 0;
  padding-right: 20px;
  color: #fff;
  
  .user-name {
    margin-right: 20px;
  }
  
  .user-logout {
    display: inline-block;
    cursor: pointer;
  }
}
.ant-layout-header {
  padding: 0 !important;
}

样式reset

npm install normalize.css

html,
body {
  margin: 0;
  height: 100%;
}

#root {
  height: 100%;
}

二级路由配置

使用步骤

1. 在 pages 目录中，分别创建：Home（数据概览）/Article（内容管理）/Publish（发布文章）页面文件夹

2. 分别在三个文件夹中创建 index.jsx 并创建基础组件后导出

3. 在router/index.js 中配置嵌套子路由，在Layout中配置二级路由出口

4. 使用 Link 修改左侧菜单内容，与子路由规则匹配实现路由切换

代码实现 pages/Home/index.js

const Home = () => {
  return <div>Home</div>
}
export default Home

pages/Article/index.js

const Article = () => {
  return <div>Article</div>
}
export default Article

pages/Publish/index.js

const Publish = () => {
  return <div>Publish</div>
}
export default Publish

router/index.js

import { createBrowserRouter } from 'react-router-dom'

import Login from '@/pages/Login'
import Layout from '@/pages/Layout'
import Publish from '@/pages/Publish'
import Article from '@/pages/Article'
import Home from '@/pages/Home'
import { AuthRoute } from '@/components/Auth'

const router = createBrowserRouter([
  {
    path: '/',
    element: (
      <AuthRoute>
        <Layout />
      </AuthRoute>
    ),
    children: [
      {
        index: true,
        element: <Home />,
      },
      {
        path: 'article',
        element: <Article />,
      },
      {
        path: 'publish',
        element: <Publish />,
      },
    ],
  },
  {
    path: '/login',
    element: <Login />,
  },
])

export default router

配置二级路由出口

<Layout className="layout-content" style={{ padding: 20 }}>
  <Outlet />
</Layout>

路由菜单点击交互实现

image.png

点击菜单跳转路由

import { Outlet, useNavigate } from 'react-router-dom'

const items = [
  {
    label: '首页',
    key: '/',
    icon: <HomeOutlined />,
  },
  {
    label: '文章管理',
    key: '/article',
    icon: <DiffOutlined />,
  },
  {
    label: '创建文章',
    key: '/publish',
    icon: <EditOutlined />,
  },
]

const GeekLayout = () => {
  const navigate = useNavigate()
  const menuClick = (route) => {
    navigate(route.key)
  }
  return (
      <Menu
        mode="inline"
        theme="dark"
        selectedKeys={selectedKey}
        items={items}
        style={{ height: '100%', borderRight: 0 }}
        onClick={menuClick}
      /> 
  )
}
export default GeekLayout

菜单反向高亮

const GeekLayout = () => {
  // 省略部分代码
  const location = useLocation()
  const selectedKey = location.pathname
  
  return (
    <Layout>
      <Header className="header">
        <div className="logo" />
        <div className="user-info">
          <span className="user-name">{name}</span>
          <span className="user-logout">
            <Popconfirm title="是否确认退出？" okText="退出" cancelText="取消">
              <LogoutOutlined /> 退出
            </Popconfirm>
          </span>
        </div>
      </Header>
      <Layout>
        <Sider width={200} className="site-layout-background">
          <Menu
            mode="inline"
            theme="dark"
            selectedKeys={selectedKey}
            items={items}
            style={{ height: '100%', borderRight: 0 }}
            onClick={menuClickHandler}></Menu>
        </Sider>
        <Layout className="layout-content" style={{ padding: 20 }}>
          <Outlet />
        </Layout>
      </Layout>
    </Layout>
  )
}

展示个人信息

实现步骤

1. 在Redux的store中编写获取用户信息的相关逻辑

2. 在Layout组件中触发action的执行

3. 在Layout组件使用使用store中的数据进行用户名的渲染

代码实现 store/userStore.js

import { createSlice } from '@reduxjs/toolkit'
import { http } from '@/utils/request'
import { getToken, setToken } from '@/utils'
const userStore = createSlice({
  name: 'user',
  // 数据
  initialState: {
    token: getToken() || '',
    userInfo: {}
  },
  // 同步修改方法
  reducers: {
    setUserToken (state, action) {
      state.token = action.payload
      // 存入本地
      setToken(state.token)
    },
    setUserInfo (state, action) {
      state.userInfo = action.payload
    }
  }
})

// 解构出actionCreater
const { setUserToken, setUserInfo } = userStore.actions

// 获取reducer函数
const userReducer = userStore.reducer

const fetchLogin = (loginForm) => {
  return async (dispatch) => {
    const res = await http.post('/authorizations', loginForm)
    dispatch(setUserToken(res.data.token))
  }
}


const fetchUserInfo = () => {
  return async (dispatch) => {
    const res = await http.get('/user/profile')
    dispatch(setUserInfo(res.data))
  }
}

export { fetchLogin, fetchUserInfo }

export default userReducer

pages/Layout/index.js

// 省略部分代码
import { fetchUserInfo } from '@/store/modules/user'
import { useDispatch, useSelector } from 'react-redux'


const GeekLayout = () => {
  const dispatch = useDispatch()
  const name = useSelector(state => state.user.userInfo.name)
  useEffect(() => {
    dispatch(fetchUserInfo())
  }, [dispatch])
  return (
    <Layout>
      <Header className="header">
        <div className="logo" />
        <div className="user-info">
          <span className="user-name">{name}</span>
          <span className="user-logout">
            <Popconfirm title="是否确认退出？" okText="退出" cancelText="取消">
              <LogoutOutlined /> 退出
            </Popconfirm>
          </span>
        </div>
      </Header>
      <Layout>
        <Sider width={200} className="site-layout-background">
          <Menu
            mode="inline"
            theme="dark"
            defaultSelectedKeys={['1']}
            items={items}
            style={{ height: '100%', borderRight: 0 }}></Menu>
        </Sider>
        <Layout className="layout-content" style={{ padding: 20 }}>
          <Outlet />
        </Layout>
      </Layout>
    </Layout>
  )
}
export default GeekLayout

退出登录实现

实现步骤

1. 为气泡确认框添加确认回调事件

2. 在store/userStore.js 中新增退出登录的action函数，在其中删除token

3. 在回调事件中，调用userStore中的退出action

4. 清除用户信息，返回登录页面

代码实现 store/modules/user.js

import { createSlice } from '@reduxjs/toolkit'
import { http } from '@/utils/request'
import { clearToken, getToken, setToken } from '@/utils'
const userStore = createSlice({
  name: 'user',
  // 数据
  initialState: {
    token: getToken() || '',
    userInfo: {}
  },
  // 同步修改方法
  reducers: {
    setUserToken (state, action) {
      state.token = action.payload
      // 存入本地
      setToken(state.token)
    },
    setUserInfo (state, action) {
      state.userInfo = action.payload
    },
    clearUserInfo (state) {
      state.token = ''
      state.userInfo = {}
      clearToken()
    }
  }
})

// 解构出actionCreater
const { setUserToken, setUserInfo, clearUserInfo } = userStore.actions

// 获取reducer函数
const userReducer = userStore.reducer


export { fetchLogin, fetchUserInfo, clearUserInfo }

export default userReducer

pages/Layout/index.js

const GeekLayout = () => {
  // 退出登录
  const loginOut = () => {
    dispatch(clearUserInfo())
    navigator('/login')
  }

  return (
    <Layout>
      <Header className="header">
        <div className="logo" />
        <div className="user-info">
          <span className="user-name">{name}</span>
          <span className="user-logout">
            <Popconfirm 
              title="是否确认退出？" 
              okText="退出" 
              cancelText="取消" 
              onConfirm={loginOut}>
              <LogoutOutlined /> 退出
            </Popconfirm>
          </span>
        </div>
      </Header>
      <Layout>
        <Sider width={200} className="site-layout-background">
          <Menu
            mode="inline"
            theme="dark"
            selectedKeys={selectedKey}
            items={items}
            style={{ height: '100%', borderRight: 0 }}
            onClick={menuClickHandler}></Menu>
        </Sider>
        <Layout className="layout-content" style={{ padding: 20 }}>
          <Outlet />
        </Layout>
      </Layout>
    </Layout>
  )
}

image.png

处理Token失效

业务背景：如果用户一段时间不做任何操作，到时之后应该清除所有过期用户信息跳回到登录

http.interceptors.response.use((response) => {
  // 2xx 范围内的状态码都会触发该函数。
  // 对响应数据做点什么
  return response.data
}, (error) => {
  // 超出 2xx 范围的状态码都会触发该函数。
  // 对响应错误做点什么
  console.dir(error)
  if (error.response.status === 401) {
    clearToken()
    router.navigate('/login')
    window.location.reload()
  }

  return Promise.reject(error)
})

首页Home图表展示

home.png

图表基础Demo实现

图表类业务渲染，我们可以通过下面的顺序来实现

1. 跑通基础DEMO

2. 按照实际业务需求进行修改

安装echarts

npm i echarts

实现基础Demo

import { useEffect, useRef } from 'react'
import * as echarts from 'echarts'

const Home = () => {
  const chartRef = useRef(null)
  useEffect(() => {
    // 1. 生成实例
    const myChart = echarts.init(chartRef.current)
    // 2. 准备图表参数
    const option = {
      xAxis: {
        type: 'category',
        data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
      },
      yAxis: {
        type: 'value'
      },
      series: [
        {
          data: [120, 200, 150, 80, 70, 110, 130],
          type: 'bar'
        }
      ]
    }
    // 3. 渲染参数
    myChart.setOption(option)
  }, [])

  return (
    <div>
      <div ref={chartRef} style={{ width: '400px', height: '300px' }} />
    </div >
  )
}

export default Home

image.png

组件封装

基础抽象

import { useRef, useEffect } from 'react'
import * as echarts from 'echarts'

const BarChart = () => {
  const chartRef = useRef(null)
  useEffect(() => {
    // 1. 生成实例
    const myChart = echarts.init(chartRef.current)
    // 2. 准备图表参数
    const option = {
      xAxis: {
        type: 'category',
        data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
      },
      yAxis: {
        type: 'value'
      },
      series: [
        {
          data: [120, 200, 150, 80, 70, 110, 130],
          type: 'bar'
        }
      ]
    }
    // 3. 渲染参数
    myChart.setOption(option)
  }, [])
  return <div ref={chartRef} style={{ width: '400px', height: '300px' }}></div>
}

export { BarChart }

抽象可变参数

import { useRef, useEffect } from 'react'
import * as echarts from 'echarts'

const BarChart = ({ xData, sData, style = { width: '400px', height: '300px' } }) => {
  const chartRef = useRef(null)
  useEffect(() => {
    // 1. 生成实例
    const myChart = echarts.init(chartRef.current)
    // 2. 准备图表参数
    const option = {
      xAxis: {
        type: 'category',
        data: xData
      },
      yAxis: {
        type: 'value'
      },
      series: [
        {
          data: sData,
          type: 'bar'
        }
      ]
    }
    // 3. 渲染参数
    myChart.setOption(option)
  }, [sData, xData])
  return <div ref={chartRef} style={style}></div>
}

export { BarChart }

import { BarChart } from './BarChart'

const Home = () => {
  return (
    <div>
      <BarChart
        xData={['Vue', 'React', 'Angular']}
        sData={[2000, 5000, 1000]} />

      <BarChart
        xData={['Vue', 'React', 'Angular']}
        sData={[200, 500, 100]}
        style={{ width: '500px', height: '400px' }} />
    </div >
  )
}

export default Home