一、react-router-dom v5路由信息获取

HomeHead.jsx:

import React from "react";
import  {Link, withRouter, useHistory, useLocation, useRouteMatch} from 'react-router-dom'
import styled from "styled-components";

const NavBox = styled.nav`
  a {
    margin-right: 10px;
  }
`;

// const HomeHead = function() {
//     return (
//         <NavBox>
//         <Link to="/a">A</Link>
//         <Link to="/b">B</Link>
//         <Link to="/c">C</Link>
//       </NavBox>
//     )
// }

class HomeHead extends React.Component{
  render() {
    console.log(this.props);
    return (
              <NavBox>
              <Link to="/a">A</Link>
              <Link to="/b">B</Link>
              <Link to="/c">C</Link>
            </NavBox>
          )
  }
}

// const Handle = function(Component) {
//   return function Hoc(props) {
//     let history = useHistory(),
//     location = useLocation(),
//     match = useRouteMatch()
//     return <Component {...props} history={history} location={location} match={match} />
//   }
// }

export default withRouter(HomeHead)

App.jsx:

import "./App.css";
// import { Button } from "antd-mobile";
import styled from "styled-components";
import { HashRouter, Route, Switch, Redirect, Link } from "react-router-dom";
import A from './views/A'
import B from './views/B'
import C from './views/C'
import Login from './views/Login'

import routes from "./router/routes";
import RouterView from "./router";
// import { Suspense } from 'react'
import HomeHead from './components/HomeHead'

const NavBox = styled.nav`
  a {
    margin-right: 10px;
  }
`;

const App = function App() {
  return (
    <HashRouter>
      <div className="App">
      {/* 导航部分 */}
      {/* <NavBox>
        <Link to="/a">A</Link>
        <Link to="/b">B</Link>
        <Link to="/c">C</Link>
      </NavBox> */}
      <HomeHead test='aa'/>
      {/* 路由容器 */}
      <div className="content">
        {/* 
          Switch：确保路由中，只要有一项匹配，就不会继续往下匹配路由 
          exact：设置匹配模式为精准匹配
        */}
        {/* <Switch>
          <Redirect exact from='/' to='/a' />
          <Route path='/a' component={A} ></Route>
          <Route path='/b' component={B}></Route>
          <Route path='/c' render={() => {
            let isLogin = true
            if(isLogin) {
              return <C />
            }
            return <Redirect to='/login' />
          }}></Route>
          <Route path='/login' component={Login}></Route>
          <Redirect to='/a'/>
        </Switch> */}
        
        <RouterView routes={routes}/>
        
        
      </div>
    </div>
    </HashRouter>
  );
}

export default App;

router/index.jsx:

import React, { Suspense } from "react";
import { Switch, Route, Redirect } from "react-router-dom";
const RouterView = function (props) {
  let { routes } = props;
  return (
    <Switch>
      {routes.map((route, index) => {
        let {
          redirect,
          exact,
          from,
          to,
          path,
          component: Component,
          name,
          meta,
        } = route;
        let config = {};
        if (redirect) {
          config = { to };
          if (from) config.from = from;
          if (exact) config.exact = exact;
          return <Redirect key={index} {...config} />;
        }
        config = { path };
        if (exact) config.exact = exact;
        // return <Route key={index} {...config} component={Component} />
        return (
          <Route
            key={index}
            {...config}
            render={(props) => {
              //   console.log(props, "props");
              return (
                <Suspense fallback={<h2>加载中。。。</h2>}>
                  <Component {...props} />
                </Suspense>
              );
            }}
          />
        );
      })}
    </Switch>
  );
};

export default RouterView;