我正在制作一个网站,在用户登录后,用户将被重定向到主页.主页和网站的所有其他页面只能由登录用户访问,但即使用户登录(firebase auth)后,网站的其他部分(受保护的路由)仍然无法访问,唯一可访问的页面是登录页面.我使用的技术是react、react路由dom和firebase,这就是我的代码,从应用开始.js
import Home from "./pages/home/Home";
import Login from "./pages/login/Login";
import { BrowserRouter, Navigate, Route, Routes } from "react-router-dom";
import List from "./pages/list/List";
import User from "./pages/user/User";
import AddNew from "./pages/addnew/AddNew";
import { useContext } from "react";
import { AuthContext } from "./context/AuthContext";
function App() {
const {currentUser} = useContext(AuthContext);
const RequireAuth = ({ children }) => {
return currentUser ? children : <Navigate to="/login" />;
};
return (
<div className="App">
<BrowserRouter>
<Routes>
<Route path="/login" exact element={<Login />} />
<Route path="/" exact element={ <RequireAuth> <Home /> </RequireAuth> } />
<Route path="/users" exact element={<RequireAuth><List /></RequireAuth>} />
<Route path="/users/:id" exact element={<RequireAuth><User /></RequireAuth>} />
<Route path="/add" exact element={<RequireAuth><AddNew /></RequireAuth>} />
</Routes>
</BrowserRouter>
</div>
);
}
export default App;
然后是登录.js页面
import React,{useState} from 'react'
import { useContext } from 'react';
import { signInWithEmailAndPassword } from "firebase/auth";
import { auth } from '../../firebase';
import "./login.css";
import {useNavigate} from "react-router-dom";
import { AuthContext } from '../../context/AuthContext';
export default function Login() {
const [error, seterror] = useState(false);
const [email, setemail] = useState("");
const [password, setpassword] = useState("");
const navigate = useNavigate();
const {dispatch} = useContext(AuthContext)
const handleLogin = (e) => {
e.preventDefault();
signInWithEmailAndPassword(auth, email, password)
.then((userCredential) => {
const user = userCredential.user;
dispatch({type: "LOGIN", payload: user});
navigate("/");
})
.catch((error) => {
seterror(true);
console.log(error.message);
});
}
return (
<div className='login'>
<form onSubmit={handleLogin}>
<input className='ok' type="email" placeholder='email' onChange={e => setemail(e.target.value)} />
<input className='ok' type="password" placeholder='password' onChange={e => setpassword(e.target.value)} />
<button className='sb'>Submit</button>
{error && <span className='ks'>Wrong email or password</span>}
</form>
</div>
)
}
然后我就有了答案.处理状态的js文件
const AuthReducer = (state, action) => {
switch (action.type) {
case "LOGIN": {
return {
currentUser: action.payload,
}
}
case "LOGOUT": {
return {
currentUser: null
}
}
default:
return state;
}
}
export default AuthReducer
最后是作者的背景.js文件
import { createContext, useEffect, useReducer } from "react";
import AuthReducer from "./AuthReducer";
const INITIAL_STATE = {
currentUser: JSON.parse(localStorage.getItem("user")) || null,
}
export const AuthContext = createContext(INITIAL_STATE);
export const AuthContextProvider = ({children}) => {
const [state, dispatch] = useReducer(AuthReducer, INITIAL_STATE);
useEffect(() => {
localStorage.setItem("user", JSON.stringify(state.currentUser))
}, [state.currentUser])
return (
<AuthContext.Provider value={{current: state.current, dispatch}}>
{children}
</AuthContext.Provider>
)
}
我不知道是什么导致了这个问题,但我有一个 idea ,它与国家有关,因为在我开始将它与国家结合之前,它就已经重定向了.有什么问题吗