我在從我的網站鏈接加載字體時出現問題。在我所看到的那裏有一個錯誤,在我的server.js中CORS不存在於我的頭文件中。現在,我的問題是,我將如何將頭插入到我的server.js有人可以幫助我嗎?ReactJS否'訪問控制 - 允許來源'
以下是錯誤的起源「我的網站鏈接」
字體已被跨來源資源共享的政策阻止加載:沒有「訪問控制允許來源」標頭出現在請求的資源。原產地「http://localhost:3001」下面顯示的,因此不允許訪問
const app = express();
//
// Tell any CSS tooling (such as Material UI) to use all vendor prefixes if the
// user agent is not known.
// -----------------------------------------------------------------------------
global.navigator = global.navigator || {};
global.navigator.userAgent = global.navigator.userAgent || 'all';
//
// Register Node.js middleware
// -----------------------------------------------------------------------------
app.use(express.static(path.join(__dirname, 'public')));
app.use(cookieParser());
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());
//
// Authentication
// -----------------------------------------------------------------------------
app.use(expressJwt({
secret: auth.jwt.secret,
credentialsRequired: false,
getToken: req => req.cookies.id_token,
}));
app.use(passport.initialize());
app.get('/login/facebook',
passport.authenticate('facebook', { scope: ['email', 'user_location'], session: false })
);
app.get('/login/facebook/return',
passport.authenticate('facebook', { failureRedirect: '/login', session: false }),
(req, res) => {
const expiresIn = 60 * 60 * 24 * 180; // 180 days
const token = jwt.sign(req.user, auth.jwt.secret, { expiresIn });
res.cookie('id_token', token, { maxAge: 1000 * expiresIn, httpOnly: true });
res.redirect('/');
}
);
//
// Register API middleware
// -----------------------------------------------------------------------------
app.use('/graphql', expressGraphQL(req => ({
schema,
graphiql: true,
rootValue: { request: req },
pretty: process.env.NODE_ENV !== 'production',
})));
//
// Register server-side rendering middleware
// -----------------------------------------------------------------------------
app.get('*', async (req, res, next) => {
try {
let css = [];
let statusCode = 200;
const data = { title: '', description: '', style: '', script: assets.main.js, children: '' };
await UniversalRouter.resolve(routes, {
path: req.path,
query: req.query,
context: {
insertCss: (...styles) => {
styles.forEach(style => css.push(style._getCss())); // eslint-disable-line no-underscore-dangle, max-len
},
setTitle: value => (data.title = value),
setMeta: (key, value) => (data[key] = value),
},
render(component, status = 200) {
css = [];
statusCode = status;
data.children = ReactDOM.renderToString(component);
data.style = css.join('');
return true;
},
});
const html = ReactDOM.renderToStaticMarkup(<Html {...data} />);
res.status(statusCode);
res.send(`<!doctype html>${html}`);
} catch (err) {
next(err);
}
});
//
// Error handling
// -----------------------------------------------------------------------------
const pe = new PrettyError();
pe.skipNodeFiles();
pe.skipPackage('express');
app.use((err, req, res, next) => { // eslint-disable-line no-unused-vars
console.log(pe.render(err)); // eslint-disable-line no-console
const statusCode = err.status || 500;
const html = ReactDOM.renderToStaticMarkup(
<Html
title="Internal Server Error"
description={err.message}
style={errorPageStyle._getCss()}
userAgent={req.headers['user-agent']}> // eslint-disable-line no-underscore-dangle
{ReactDOM.renderToString(<ErrorPage error={err} />)}
</Html>
);
res.status(statusCode);
res.send(`<!doctype html>${html}`);
});
//
// Launch the server
// -----------------------------------------------------------------------------
/* eslint-disable no-console */
models.sync().catch(err => console.error(err.stack)).then(() => {
app.listen(port,() => {
console.log(`The server is running at http://localhost:${port}/`);
});
});
/* eslint-enable no-console */
你有沒有看這份文件,說明如何啓用快遞CORS? http://enable-cors.org/server_expressjs.html – KumarM
@KumarM讓我檢查一下 – dczii