我正在研究 Nextjs,我来自 React,很多似乎都一样,但我迷失了身份验证和私有路由。 我在互联网上寻找了很多代码,但要么它们坏了,要么对我没有意义,要么它们没有正确解释我的疑虑。我的场景基本上是:
我的问题是:
到目前为止,我的代码可以正常工作,但我确信它很糟糕,而且完全有缺陷。
我有以下文件:
_app.js
function MyApp({ Component, pageProps }) {
return (
<UserContextFunc>
<NavContext>
<Component {...pageProps} />
</NavContext>
</UserContextFunc>
);
}
export default MyApp;
index.js
export default function App() {
const [loading, setLoading] = React.useState(false);
const [email, setEmail] = React.useState("");
const [password, setPassword] = React.useState("");
const { setState } = React.useContext(UserContext);
const router = useRouter();
const login = () => {
setLoading(true);
fetch("/api/auth/login", {
method: "POST",
body: JSON.stringify({
email,
password,
}),
headers: {
"Content-Type": "application/json",
},
})
.then((res) => {
setLoading(false);
if (res.status === 200) {
res.json().then(({ token, roles }) => {
setState({ roles, token });
window.localStorage.setItem(
"rou",
btoa(unescape(encodeURIComponent(JSON.stringify(roles))))
);
window.localStorage.setItem("token", token);
router.replace("/app/adm/home");
});
}
})
.catch((err) => {
});
};
return (
<>
<ReactNotification />
<label htmlFor="exampleInputEmail1" className="form-label">
Email
</label>
<input
type="text"
value={email}
onChange={(e) => setEmail(e.target.value)}
className="form-control"
/>
<label htmlFor="exampleInputPassword1" className="form-label">
Senha
</label>
<input
type="password"
value={password}
onChange={(e) => setPassword(e.target.value)}
className="form-control"
/>
<button
onClick={() => login()}
type="button"
className="btn btn-primary btn-block"
>
{loading ? (
<div
className="spinner-border text-light spinner-border-sm"
role="status"
>
<span className="visually-hidden"></span>
</div>
) : (
"Login"
)}
</button>
</>
);
}
privateRoute.js
const indexPage = "/";
const withAuth = (Component) => {
const Auth = (props) => {
const { setState } = React.useContext(UserContext);
const router = useRouter();
React.useEffect(() => {
const token = window.localStorage.getItem("token");
var roles = window.localStorage.getItem("rou");
if (roles) {
roles = decodeURIComponent(escape(atob(roles)));
}
if (!token || !roles || token == "undefined") {
window.localStorage.removeItem("token");
window.localStorage.removeItem("rou");
return router.replace(indexPage);
} else {
setState({ roles, token });
}
}, []);
return <Component {...props} />;
};
if (Component.getInitialProps) {
Auth.getInitialProps = Component.getInitialProps;
}
return Auth;
};
export default withAuth;
userContext.js
export const UserContext = React.createContext();
export const UserContextFunc = ({ children }) => {
const [state, dispatch] = React.useReducer(
(prevState, action) => {
switch (action.type) {
case 'SET':
return {
...prevState,
...action.newState,
};
}
},
{
roles: []
}
);
const setState = newState => {
dispatch({ type: 'SET', newState });
}
const getState = async () => {
return state
}
return (
<UserContext.Provider value={{ getState, setState, state }}>
{children}
</UserContext.Provider>
);
}
NavContext.js
function NavContext(props) {
const { state } = React.useContext(UserContext);
return (
<>
{state.roles && state.token && <NavBar />}
{props.children}
</>
);
}
export default NavContext;
在私人文件中,我以这种方式导出
import withPrivateRoute from "../../../utils/privateRoute";
...
export default withPrivateRoute(Dashboard);
我希望我能很好地解释它,我知道它很多,但我没有找到任何解释如何在 Nextjs 中创建私有路由或如何在不使用 Next 文档中的身份验证模板的情况下正确身份验证的内容.
这段代码有效,但正如我所说,它似乎完全错误。我也接受小费。