react 登陆页面_Vue 转React开发过程 （路由拦截）

import React from "react";
import {BrowserRouter as Router, Switch} from 'react-router-dom';
import "./App.css";
 
// 路由部分 自行拆文件去
import FrontendAuth from './router/FrontendAuth'
import Home from './home/index'
import Login from "./login/index";
import NotFund from "./notFund"
const routes = [
  { path: '/', meta: { title: '首页' }, component: Home, auth: true },
  { path: '/login', meta: { title: '登录' }, component: Login, auth: false },
  { path: '/app', meta: { title: '首页' }, component: Home, auth: true },
  { path: '/404', meta: { title: '404' }, component: NotFund }
]
// 路由部分结束
 
class App extends React.Component {
  render() {
    return (
      <Router>
        <Switch>
          <FrontendAuth routerConfig={routes}></FrontendAuth>
        </Switch>
      </Router>
    );
  }
}
 
export default App;

import React from 'react'
import { Route, Redirect } from "react-router-dom";
export default class FrontendAuth extends React.Component {
  constructor (props) {
    super (props)
  }
  render () {
    const { routerConfig, location } = this.props
    const { pathname } = location
    const isLogin = sessionStorage.getItem('username')
    console.log(routerConfig, pathname)
    const currentPath = routerConfig.find(item => item.path === pathname)
    if (currentPath && !currentPath.auth && !isLogin) {
      return (<Route exact path={pathname} component={currentPath.component}></Route>)
    }
    if (isLogin) {
      if (pathname === '/login') {
        // 如果是登陆状态，想要跳转到登陆，重定向到主页
        return (<Redirect to="/app"></Redirect>)
      } else {
        if (currentPath) {
          // 如果路由合法，就跳转到相应的路由
          return (<Route exact path={pathname} component={currentPath.component}></Route>)
        } else {
          // 如果路由不合法，重定向到 404 页面
          return(<Redirect to="/404"/>)
        }
      }
    } else {
      // 非登陆状态下，当路由合法时且需要权限校验时，跳转到登陆页面，要求登陆
      if (currentPath && currentPath.auth) {
        return <Redirect to="/login" />;
      } else {
        // 非登陆状态下，路由不合法时，重定向至 404
        return <Redirect to="/404" />;
      }
    }
  }
}