当用户未登录时，重定向到登录。Reactjs

Question

我的应用看起来像：

class App extends Component {
  render() {
    <Router>
      <div>
      <Route exact path='/login' component={Login} />
      <Route exact path='/game' component={GameContainer} />
      <Route exact path='/chat' component={ChatContainer} />
      <Route exact path='/info' component={InfoContainer} />
    </div>
    </Router>  
  }

如果用户访问/ game下的页面并没有登录，我想将他们重定向到登录页面。

如何在所有路由器中做到优雅？

Answer 1

基本思想是使用自定义组件（在下面的示例中为PrivateRoute）包装需要身份验证的路由。PrivateRoute将使用某种逻辑来确定用户是否已通过身份验证，然后确定是否通过身份验证。允许请求的路由呈现或重定向到登录页面。

在react-router培训文档中的以下链接https://reacttraining.com/react-
router/web/example/auth-workflow
上也对此进行了描述。

这是一个以上述内容为灵感的实现方式。

在App.js中（或发生路由的地方）

import React, { Component } from 'react'
import { BrowserRouter as Router, Route } from 'react-router-dom'
import PrivateRoute from './PrivateRoute'
import MyComponent from '../src/MyComponent'
import MyLoginForm from '../src/MyLoginForm'

<Router>
  <Route path="/login" component={MyLoginForm} />
  <PrivateRoute path="/onlyAuthorizedAllowedHere/" component={MyComponent} />
</Router>

还有PrivateRoute组件

// This is used to determine if a user is authenticated and
// if they are allowed to visit the page they navigated to.

// If they are: they proceed to the page
// If not: they are redirected to the login page.
import React from 'react'
import AuthService from './Services/AuthService'
import { Redirect, Route } from 'react-router-dom'

const PrivateRoute = ({ component: Component, ...rest }) => {

  // Add your own authentication on the below line.
  const isLoggedIn = AuthService.isLoggedIn()

  return (
    <Route
      {...rest}
      render={props =>
        isLoggedIn ? (
          <Component {...props} />
        ) : (
          <Redirect to={{ pathname: '/login', state: { from: props.location } }} />
        )
      }
    />
  )
}

export default PrivateRoute