一、概述

        本文将通过React Router & React Redux实现登录和授权路由功能，将会从以下三个部分入手。

二、技术实现

auth-action-reducer (redux配置)

export const Login = (username, password) => ({type: 'login',username: username,password: password };
export const Logout = (username) => ({type: 'logout', username: username});export const AuthReducer = (state, action) =>{switch(action.type){case 'Login':const res = auth(action.username, action.password);if (res){return {...state, loggined:true, username}}return state;case 'Logout':const res = unauth(action.username);if (res){return {...state, loggined:false}}return state;}
}export const initialState = {loggined: false};

auth-page.js (登录页)

export const AuthPage = () =>{const [state, dispatch] = useReducer(authReducer, initialState);return (<div><h1>Login Page</h1><button onClick = () => dispatch(Login())>Login</button></div>);};

welcome-page.js (首页)

 const Welcome = () =>{const [state, dispatch] = useReducer(authReducer,intializeState)return (<div><h1>Home Page</h1>{state.loggined?<button onClick =()=> {dispatch(Logout())}>LogOut</button>:'请登录'}</div>);
}

app.js (入口，配置路由)

const App = () => {const [state] = useReducer(authReducer, initialState);return (<ul><li><Link to = '/'>Home</Link></li><li><Link to = 'login'>Login</Link></li><ul><Router><Switch><Route exact path = '/' component = {Welcome} /><Route exact path = '/login' render = {() => {state.isLoggined ? <Redirect to = '/'/>:<AuthPage/> }/></Switch></Router>);}