新建react项目，react-router-dom配置路由，引入antd

提示：reactrouter6.4+版本，与reactrouter5.0的版本用法有区别，互不兼容需注意

---

前言

需求：新建react项目，react-router-dom配置路由，引入antd

一、创建项目

1、创建与安装

npx create-react-app my-react-app
cd my-react-app

项目结构

npm install react-router-dom
npm install antd –save

2、修改文件
app.js

import './App.css';
function App() {
  return (
    <div>
      my react app
    </div>
  );
}
export default App;

app.css

.App {
  text-align: center;
}

3、启动预览

npm start

二、新建文件并引入react-router-dom、antd

1、新建文件

head.js、home.js、my.js、order.js、pay.js内容基本一致，贴一个例子，其余修改对应值即可

import React from 'react';

class Pay extends React.Component {
  render() {
    return <div>Pay</div>;
  }
}
export default Pay;

main.js

import React from 'react';
import { Outlet } from "react-router-dom";
class Main extends React.Component {
  render() {
    return <div><Outlet /></div>;
  }
}
export default Main;

side.js

import React from 'react';
import Routes from '../routes';
import { Menu } from 'antd';
import { useNavigate } from "react-router-dom";
let menus = [];
Routes.forEach((item,index)=>{
  let obj = {
    key:index,
    label:item.label,
  }
  if(item.children){ 
    item.children.forEach((citem,i)=>{
      citem.key=index+'-'+i;
    });
    obj.children = item.children
   }
  menus.push(obj);
});
export default function Side() {
  const navigate = useNavigate();
  function goPath(e){
    let keys = e.key.split('-');
    let route,cRoute;
    route = Routes[keys[0]];
    if(route.children){
      cRoute = route.children[keys[1]];
    }
    let path = route.path + (cRoute?'/'+cRoute.path:'');
    navigate(path);
  }
  return <div>
    <Menu
      defaultSelectedKeys={['0']}
      defaultOpenKeys={['1']}
      mode="inline"
      theme="dark"
      items={menus}
      onClick={goPath}
    />
  </div>;
}

routes/index.js

import Home from '../components/home';
import My from '../components/my';
import Order from '../components/order';
import Pay from '../components/pay';
import Main from '../components/main';

const Routes = [
  {
    path: "/",
    label:'首页',
    element: <Home/>,
  },
  {
    path: "main",
    label:'业务',
    element: <Main/>,
    children:[
      {
        path: "order",
        label:'订单',
        element: <Order/>,
      },
      {
        path: "pay",
        label:'支付信息',
        element: <Pay/>,
      },
    ]
  },
  {
    path: "my",
    label:'我的',
    element: <My/>,
  },
];
export default Routes;

2、新建后文件结构

三、配置路由跳转

1、修改App.js和App.css文件
App.js

import { BrowserRouter ,Route,Routes} from "react-router-dom";
import './App.css';
import routes from './routes';
import Head from './components/head';
import Side from './components/side';
function renderRoute(){
  let arr = [];
  routes.forEach((item,i)=>{
    if(item.children){
      item.children.forEach((citem,ci)=>{
        arr.push(<Route key={i+'-'+ci} path={item.path+'/'+citem.path} element={citem.element}></Route>);
      })
    }else{
      arr.push(<Route key={i} path={item.path} element={item.element}></Route>);
    }
  })
  return arr;
}

function App() {
  return (
    <div className="App">
      <BrowserRouter>
      <div className='app_head'><Head/></div>
        <div className='app_side'><Side/></div> 
        <div className='app_main'>
          <Routes>
            { renderRoute() }
          </Routes>
        </div> 
      </BrowserRouter>
    </div>
  );
}
export default App;

App.css

.App {
  text-align: center;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}
.app_head{
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 64px;
  background-color: #dbeff3;
}
.app_side{
  position: absolute;
  top: 64px;
  left: 0;
  bottom: 0;
  width: 320px;
  background-color: #707472;
}
.app_main{
  position: absolute;
  top: 64px;
  left: 320px;
  bottom: 0;
  right: 0;
  background-color: #fff;
}

四、效果

五、遇到的问题

useNavigate必须在router component里使用，side.js里调用的useNavigate，所以side
componet必须在BrowserRouter里

app.js错误写法

import { BrowserRouter ,Route,Routes} from "react-router-dom";
import './App.css';
import routes from './routes';
import Head from './components/head';
import Side from './components/side';
function renderRoute(){
  let arr = [];
  routes.forEach((item,i)=>{
    if(item.children){
      item.children.forEach((citem,ci)=>{
        arr.push(<Route key={i+'-'+ci} path={item.path+'/'+citem.path} element={citem.element}></Route>);
      })
    }else{
      arr.push(<Route key={i} path={item.path} element={item.element}></Route>);
    }
  })
  return arr;
}

function App() {
  return (
    <div className="App">
     
      <div className='app_head'><Head/></div>
        <div className='app_side'><Side/></div> 
        <BrowserRouter>
          <div className='app_main'>
            <Routes>
              { renderRoute() }
            </Routes>
          </div> 
        </BrowserRouter>
    </div>
  );
}
export default App;

useNavigate应该放在一个react function component里

side.js错误写法

import React from 'react';
import Routes from '../routes';
import { Menu } from 'antd';
import { useNavigate } from "react-router-dom";
let menus = [];
Routes.forEach((item,index)=>{
  let obj = {
    key:index,
    label:item.label,
  }
  if(item.children){ 
    item.children.forEach((citem,i)=>{
      citem.key=index+'-'+i;
    });
    obj.children = item.children
   }
  menus.push(obj);
});
const navigate = useNavigate();
class Side extends React.Component {
  render() {
    function goPath(e){
      let keys = e.key.split('-');
      let route,cRoute;
      route = Routes[keys[0]];
      if(route.children){
        cRoute = route.children[keys[1]];
      }
      let path = route.path + (cRoute?'/'+cRoute.path:'');
      navigate(path);
    }
    return 

      
    
;
  }
}
export default Side;

useNavigate应该放在一个react function component里，而不是一个class component里

side.js错误写法

import React from 'react';
import Routes from '../routes';
import { Menu } from 'antd';
import { useNavigate } from "react-router-dom";
let menus = [];
Routes.forEach((item,index)=>{
  let obj = {
    key:index,
    label:item.label,
  }
  if(item.children){ 
    item.children.forEach((citem,i)=>{
      citem.key=index+'-'+i;
    });
    obj.children = item.children
   }
  menus.push(obj);
});
class Side extends React.Component {
  render() {
    const navigate = useNavigate();
    function goPath(e){
      let keys = e.key.split('-');
      let route,cRoute;
      route = Routes[keys[0]];
      if(route.children){
        cRoute = route.children[keys[1]];
      }
      let path = route.path + (cRoute?'/'+cRoute.path:'');
      navigate(path);
    }
    return <div>
      <Menu
        defaultSelectedKeys={['0']}
        defaultOpenKeys={['1']}
        mode="inline"
        theme="dark"
        items={menus}
        onClick={goPath}
      />
    </div>;
  }
}
export default Side;

六、参考文档

react中文官网
reactrouter官网
antd官网

总结

踩坑路漫漫长@~@