使用useRoutes注册路由（React Router6）
文章目录
- 路由的基本使用
-
- 模板文件index.html
- 入口文件index.js
- 入口组件App.js
- pages/Home/index.jsx（Home组件）
- pages/About/index.jsx（About组件）
- 使用useRoutes注册路由表
-
- 第一次改进
-
- App.js
- 第二次改进
-
- routes/index.js
- App.js
路由的基本使用
create-react-app router_app，创建react项目：router_app。默认使用当前react的最新版本：react@18、react-dom@18。
npm install -save react-router-dom，默认下载安装最新版本r：react-router-dom@6。
涉及的文件包括：
- 模板文件index.html
- 入口文件index.js
- 入口组件App.js
- 路由组件pages/Home/index.jsx，即Home组件
- 路由组件pages/About/index.jsx，即About组件
模板文件index.html
DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link rel="stylesheet" href="%PUBLIC_URL%/css/bootstrap.css">
<title>React Apptitle>
head>
<body>
<noscript>You need to enable JavaScript to run this app.noscript>
<div id="root">div>
body>
html>
入口文件index.js
import React from 'react';
import ReactDOM from 'react-dom/client';
import {BrowserRouter} from "react-router-dom";
import App from './App';
const root = ReactDOM.createRoot(document.getElementById('root'));
root.render(
<BrowserRouter>
<App />
</BrowserRouter>
);
注意点：
入口组件App.js
import React from 'react'
import {NavLink,Route,Routes,Navigate} from "react-router-dom";
import About from "./pages/About";
import Home from "./pages/Home";
export default function App() {
return (
<div>
<div className="row">
<div className="col-xs-offset-2 col-xs-8">
<div className="page-header"><h2>Vue Router Demo</h2></div>
</div>
</div>
<div className="row">
<div className="col-xs-2 col-xs-offset-2">
<div className="list-group">
<NavLink className="list-group-item" to="/about">About</NavLink>
<NavLink className="list-group-item" to="/home">Home</NavLink>
</div>
</div>
<div className="col-xs-6">
<div className="panel">
<div className="panel-body">
<Routes>
<Route path="/about" element={<About/>}></Route>
<Route path="/home" element={<Home/>}></Route>
<Route path="/" element={<Navigate to="/about"/>}></Route>
</Routes>
</div>
</div>
</div>
</div>
</div>
)
}
注意点：
- 路由链接。
About - 注册路由。
}> - 重定向。
}>
pages/Home/index.jsx（Home组件）
import React from 'react'
export default function Home() {
return (
<h2>我是Home的内容</h2>
)
}
pages/About/index.jsx（About组件）
import React from 'react'
export default function About() {
return (
<h2>我是About的内容</h2>
)
}
使用useRoutes注册路由表
第一次改进
代码更改涉及的文件：App.js。
App.js
import React from 'react'
import {NavLink,Navigate,useRoutes} from "react-router-dom";
import About from "./pages/About";
import Home from "./pages/Home";
export default function App() {
const element = useRoutes([
{
path:"home",
element:<Home/>
},
{
path:"about",
element:<About/>
},
{
path:"/",
element:<Navigate to="/home"/>
},
])
return (
<div>
<div className="row">
<div className="col-xs-offset-2 col-xs-8">
<div className="page-header"><h2>Vue Router Demo</h2></div>
</div>
</div>
<div className="row">
<div className="col-xs-2 col-xs-offset-2">
<div className="list-group">
<NavLink className="list-group-item" to="/about">About</NavLink>
<NavLink className="list-group-item" to="/home">Home</NavLink>
</div>
</div>
<div className="col-xs-6">
<div className="panel">
<div className="panel-body">
{element}
</div>
</div>
</div>
</div>
</div>
)
}
注意点：useRoutes([])，useRoutes根据路由表生成对应的路由规则。
第二次改进
src文件夹下新建子文件夹：routes，routes下新建文件：index.js。
路由表独立成js文件：src/routes/index.js。
代码变更涉及的文件有：
- src/routes/index.js
- App.js
routes/index.js
import { Navigate } from "react-router-dom";
import About from "../pages/About";
import Home from "../pages/Home";
const routes = [
{
path:"/about",
element:<About/>
},
{
path:"/home",
element:<Home/>
},
{
path:"/",
element:<Navigate to="/about"/>
}
]
export default routes;
App.js
import React from 'react'
import {NavLink,useRoutes} from "react-router-dom";
import routes from "./routes";
export default function App() {
const element = useRoutes(routes);
return (
<div>
<div className="row">
<div className="col-xs-offset-2 col-xs-8">
<div className="page-header"><h2>Vue Router Demo</h2></div>
</div>
</div>
<div className="row">
<div className="col-xs-2 col-xs-offset-2">
<div className="list-group">
<NavLink className="list-group-item" to="/about">About</NavLink>
<NavLink className="list-group-item" to="/home">Home</NavLink>
</div>
</div>
<div className="col-xs-6">
<div className="panel">
<div className="panel-body">
{element}
</div>
</div>
</div>
</div>
</div>
)
}