如何将用户的浏览器 URL 重定向到 Nodejs 中的不同页面？
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How to redirect user's browser URL to a different page in Nodejs?
提问by Tanaki
In the application I'm trying to write, the main page (http://localhost:8675) has the following form:
在我尝试编写的应用程序中，主页 ( http://localhost:8675) 具有以下形式：
<form action='/?joinnew' method='post'>
<button>Start</button>
</form>
Here is the code in server.js:
这是 server.js 中的代码：
http.createServer(function(request, response) {
var root = url.parse(request.url).pathname.split('/')[1];
if (root == '') {
var query = url.parse(request.url).search:
if (query == '?joinnew') {
var newRoom = getAvaliableRoomId(); // '8dn1u', 'idjh1', '8jm84', etc.
// redirect the user's web browser to a new url
// ??? How to do. Need to redirect to 'http://whateverhostthiswillbe:8675/'+newRoom
...
}}}
I would love if there were a way to do it where I didn't have to know the host address, since that could be changing.
如果有一种方法可以在我不必知道主机地址的情况下做到这一点，我会很高兴，因为这可能会发生变化。
The 'http' object is a regular require('http'), NOT require('express').
'http' 对象是一个普通的 require('http')，而不是 require('express')。
回答by ebohlman
response.writeHead(301,
{Location: 'http://whateverhostthiswillbe:8675/'+newRoom}
);
response.end();
回答by David Seholm
回答by ciso
OP: "I would love if there were a way to do it where I didn't have to know the host address..."
OP：“如果有一种方法可以在我不必知道主机地址的情况下做到这一点，我会很高兴……”
response.writeHead(301, {
Location: "http" + (request.socket.encrypted ? "s" : "") + "://" +
request.headers.host + newRoom
});
response.end();
回答by agravat.in
In Express you can use
在 Express 中，您可以使用
res.redirect('http://example.com');
res.redirect('http://example.com');
to redirect user from server.
从服务器重定向用户。
To include a status code 301 or 302 it can be used
要包含状态代码 301 或 302，可以使用
res.redirect(301, 'http://example.com');
回答by vintagexav
If you are using Express, the cleanest complete answer is this
如果您正在使用Express，最干净的完整答案是这个
const express = require('express')
const app = express()
app.get('*', (req, res) => {
// REDIRECT goes here
res.redirect('https://www.YOUR_URL.com/')
})
app.set('port', (process.env.PORT || 3000))
const server = app.listen(app.get('port'), () => {})
回答by Codemaker
You can use res.render() or res.redirect() method to redirect to another page using node.js express
您可以使用 res.render() 或 res.redirect() 方法使用 node.js express 重定向到另一个页面
Eg:
例如：
var bodyParser = require('body-parser');
var express = require('express');
var navigator = require('web-midi-api');
var app = express();
app.use(express.static(__dirname + '/'));
app.use(bodyParser.urlencoded({extend:true}));
app.engine('html', require('ejs').renderFile);
app.set('view engine', 'html');
app.set('views', __dirname);
app.get('/', function(req, res){
res.render("index");
});
//This reponds a post request for the login page
app.post('/login', function (req, res) {
console.log("Got a POST request for the login");
var data = {
"email": req.body.email,
"password": req.body.password
};
console.log(data);
//Data insertion code
var MongoClient = require('mongodb').MongoClient;
var url = "mongodb://localhost:27017/";
MongoClient.connect(url, function(err, db) {
if (err) throw err;
var dbo = db.db("college");
var query = { email: data.email };
dbo.collection("user").find(query).toArray(function(err, result) {
if (err) throw err;
console.log(result);
if(result[0].password == data.password)
res.redirect('dashboard.html');
else
res.redirect('login-error.html');
db.close();
});
});
});
// This responds a POST request for the add user
app.post('/insert', function (req, res) {
console.log("Got a POST request for the add user");
var data = {
"first_name" : req.body.firstName,
"second_name" : req.body.secondName,
"organization" : req.body.organization,
"email": req.body.email,
"mobile" : req.body.mobile,
};
console.log(data);
**res.render('success.html',{email:data.email,password:data.password});**
});
//make sure that Service Workers are supported.
if (navigator.serviceWorker) {
navigator.serviceWorker.register('service-worker.js', {scope: '/'})
.then(function (registration) {
console.log(registration);
})
.catch(function (e) {
console.error(e);
})
} else {
console.log('Service Worker is not supported in this browser.');
}
// TODO add service worker code here
if ('serviceWorker' in navigator) {
navigator.serviceWorker
.register('service-worker.js')
.then(function() { console.log('Service Worker Registered'); });
}
var server = app.listen(63342, function () {
var host = server.address().host;
var port = server.address().port;
console.log("Example app listening at http://localhost:%s", port)
});
Here in the login section, If the email and password matches in the database then the site is directed to dashbaord.html otherwise we will show page-error.html using res.redirect() method. Also you can use res.render() to render a page in node.js
在登录部分，如果电子邮件和密码在数据库中匹配，则站点将定向到 dashbaord.html，否则我们将使用 res.redirect() 方法显示 page-error.html。您也可以使用 res.render() 在 node.js 中渲染页面
