[英]how to remove cors error while using ajax request?
我正在嘗試使用帶有跨域護照的express-session
進行會話。我借助以下鏈接使用跨域帖子發送憑據? Passport js 無法在跨域中維護會話
**I am getting below error**
加載http://localhost:5000/users/login失敗:對預檢請求的響應未通過訪問控制檢查:響應中“Access-Control-Allow-Origin”標頭的值不能是通配符“ *' 當請求的憑據模式為 'include' 時。 因此,不允許訪問 Origin ' http://localhost:3000 '。 XMLHttpRequest 發起的請求的憑證模式由 withCredentials 屬性控制。
這是我的整個代碼https://github.com/naveennsit/Cors
客戶端索引.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link href="style/style.css" rel="stylesheet" type="text/css"/>
<script src="../node_modules/jquery/dist/jquery.js"></script>
<script src="jquery.js"></script>
</head>
<body>
<script>
$(function () {
$.ajax({
url: 'http://localhost:5000/users/login',
type: "POST",
contentType: "application/json; charset=utf-8",
data: JSON.stringify({id: 5}),
dataType: 'json',
xhrFields: {
withCredentials: true,
},
crossDomain: true,
success: function () {
console.log('success');
},
error: function () {
console.log('error')
}
});
})
</script>
</body>
</html>
服務器代碼server.js
var app = require('./app');
const PORT = process.env.PORT || 5000;
app.listen(PORT, () => {
console.log(`app is running on ${PORT}`);
})
應用程序.js
const express = require('express');
const bodyParser = require('body-parser');
const cookieParser = require('cookie-parser');
const path = require('path');
const morgan = require('morgan');
const cors = require('cors');
const session = require('express-session');
const passport = require('passport');
const app = express();
// Middleware
app.use(bodyParser.urlencoded({extended: false}));
app.use(bodyParser.json());
app.use(morgan('dev'));
app.use(cookieParser());
app.use(cors());
app.use(cookieParser());
app.use(function(req, res, next) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept, authorization");
res.header("Access-Control-Allow-Methods", "GET,POST,DELETE,PUT,OPTIONS");
next();
});
app.use(session({
secret: 'secret',
resave: false,
domain: '.localhost:3000',
saveUninitialized: false,
cookie: {
domain: '.localhost:3000',
maxAge: 24 * 6 * 60 * 10000
},
}))
app.use(passport.initialize());
app.use(passport.session());
//Routes
app.use('/users', require('./routes/user.route'))
module.exports = app;
控制器.js
const passport = require('passport');
const passportConfig = require('../passport')
module.exports = {
login: async (req, res, next) => {
console.log(req.body);
try {
req.login(req.body.id, function () {
res.json({message: "Registration successfully"});
})
} catch (e) {
console.log(e)
}
},
}
護照.js
const passport = require('passport');
passport.serializeUser(function(id, done) {
console.log('ddd');
// console.log(user);
done(null, id);
});
passport.deserializeUser(function(id, done) {
console.log('deserializeUser');
done(null, id);
// db.User.findById(id, function (err, user) {
// done(err, user);
// });
});
路線
const express = require('express');
const router = require('express-promise-router')();
const controller = require('../controllers/user.controller');
router.route('/login',)
.post(controller.login)
module.exports = router;
我想在跨域中添加會話。我已經應用了 cors 插件仍然遇到相同的錯誤
最簡單的方法是使用 node.js 包cors 。 最簡單的用法是:
var cors = require('cors')
var app = express();
app.use(cors());
在ajax中使用withCredentials: true
時,cors需要如下配置。
app.use(cors({origin: 'http://localhost:3000', credentials: true}));
你幾乎可以解決它。 您需要在Access-Control-Allow-Origin
標頭值中發送實際允許的主機而不是*
如果您想允許所有來源,那么您可以在 CORS 中間件中為Access-Control-Allow-Origin
標頭值包含req.headers.origin
:
app.use(function(req, res, next) {
res.header("Access-Control-Allow-Origin", req.headers.origin);
res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept, authorization");
res.header("Access-Control-Allow-Methods", "GET,POST,DELETE,PUT,OPTIONS");
next();
});
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