I'm a beginner in Express. So I might've failed to frame the question properly. I have created a MEAN application wherein I've separated my frontend and backened. Frontend runs on port:4200 and server runs on port:3000. I wanted to run both frontend and backend on same port as part of deployment. I'm getting MIME type errors, someone told me that there is some problem with my server environment. Maybe I'm not sending headers properly. Here is my code:
I have mentioned tried solutions in the code itself as <----TRIED THIS
server.js
const express = require('express');
express.static.mime.define({'application/javascript': ['js']}); <----TRIED THIS
const bodyParser = require('body-parser');
const path = require('path');
// express.static.mime.define({'application/javascript': ['js']}); <----TRIED THIS
const api = require('./routes/api');
const PORT = 3000;
const app = express();
app.use(express.static(path.join(__dirname, 'dist')));
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());
app.use('/api', api);
app.get('/', function(req, res) {
// res.send('Hello from the server'); <----TRIED THIS
// res.writeHead(200, {'Content-Type': 'text/html'}); <----TRIED THIS
// res.set('Content-Type', 'text/plain'); <----TRIED THIS
// res.setHeader("Content-Type","application/json"); <----TRIED THIS
res.sendFile(path.join(__dirname, 'dist/application/index.html'));
})
app.listen(PORT, function() {
console.log('Server listening on PORT '+PORT);
});
api.js
For instance I'm showing you GET function only
const express = require('express');
const router = express.Router();
const mongoose = require('mongoose');
const db = <my db string>;
const jwt = require('jsonwebtoken');
mongoose.connect(
...
)
function verifyToken(req, res, next) {
...
}
router.get('/myarticles', (req, res) => {
var person="Tanzeel Mirza";
console.log('Get request for tanzeel articles');
Article.find({contributor: person}, (error, article) => {
if(error) {
console.log(error)
}
else {
if(!article) {
res.status(401).send('Invalid email')
}
else if(2>4) {
console.log("test passed");
}
else {
res.json(article);
}
}
})
})
module.exports = router;
But still I'm getting
Loading module from “http://localhost:3000/runtime-xxx.js” was blocked because of a disallowed MIME type (“text/html”).
Loading module from “http://localhost:3000/polyfills-xxx.js” was blocked because of a disallowed MIME type (“text/html”).
Loading module from “http://localhost:3000/main-xxx.js” was blocked because of a disallowed MIME type (“text/html”).
Please correct me.
PS: I asked separate questions for MIME error here. But no answers.
Since your assets are inside dist/application folder, Use app.use(express.static(path.join(__dirname, 'dist/application')));
To match all web app routes, Use app.get('*', function(req, res) {
res.sendFile(path.join(__dirname, 'dist/application/index.html'));
}).
This a generic route and will be called into action only if express can't find any other routes and always serve index.html. For example any valid /api route will never reach this handler, as there a specific route that handles it.
Final code for server.js
const express = require('express');
const bodyParser = require('body-parser');
const path = require('path');
const api = require('./routes/api');
const PORT = 3000;
const app = express();
app.use(express.static(path.join(__dirname, 'dist/application')));
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());
app.use('/api', api);
app.get('*', function(req, res) {
res.sendFile(path.join(__dirname, 'dist/application/index.html'));
})
app.listen(PORT, function() {
console.log('Server listening on PORT '+PORT);
});
A few points to not.
To serve static files, you need not set any headers manually. Express looks up the files in the folder (dist folder in your case) you set as static directory with the express.static middleware function. Express also sets the response headers based on the file extension.
So you don't need express.static.mime.define in your code anymore.
In your case you have defined app.use(express.static(path.join(__dirname, 'dist'))); which listens for static files at dist folder. In this app.use command, you haven't used a mount path which means that all the requests will go through the static middleware. If the middleware finds an asset with the same name, path and extension in dist folder it returns the file, else the request is passed to the other route handlers.
Also, If you are using static middleware, as long as there is an index.html in dist folder (immediate child of dist folder), your route handler for "/" will never get invoked as the response will be served by the middleware.
If you don't have an index html file in dist folder(immediate child of dist), but it's present somewhere in subfolders of dist, and still you need to access it using root path "/", only then you need a route handler for path "/" as below.
app.get("/", function(req, res) {
res.sendFile(path.join(__dirname, "dist/application/index.html"));
});
JS files referred using "./" in dist/application/index.html are referred relative to dist folder itself and NOT dist/application folder.
You can refer this REPL for updated code 👉.
https://repl.it/repls/SoreFearlessNagware
Try below urls
/api/myarticles - Rendered by "/api" route handler
/api/myarticles.js - Rendered by static asset middleware because the file exists in dist/api folder
/ - rendered using "/" route handler and res.sendFile because index.html doesn't exist in dist folder.
/test.js - Rendered using static middleware because file exists in dist folder
Additional links for reference.
https://expressjs.com/en/api.html#res.sendFile
https://expressjs.com/en/starter/static-files.html
1.Build your angular project, either inside or outside the server folder using ng build cmd.
2.To build your project inside server, change the dist-folder path in angular-cli.
3.To change path, either use cli cmd or edit the angular-cli.json file's "outDir": "./location/toYour/dist"
Or by using this cli cmd ng build --output-path=dist/example/
4.Then In your server root file include the static build/dist folder using express.
5.Like this app.use(express.static(path.join( 'your path to static folder')));
6.Now restart your server.
I'm making some frontend experiments and I'd like to have a very basic webserver to quickly start a project and serve the files (one index.html file + some css/js/img files). So I'm trying to make something with node.js and express, I played with both already, but I don't want to use a render engine this time since I'll have only a single static file, with this code I get the html file but not the assets (error 404):
var express = require('express'),
app = express.createServer();
app.configure(function(){
app.use(express.static(__dirname + '/static'));
});
app.get('/', function(req, res){
res.sendFile(__dirname + '/index.html');
});
app.listen(3000);
Is there a simple way to do it (in one file if possible) or Express requires the use of a view and render engine ?
I came across this because I have a similar situation. I don't need or like templates. Anything you put in the public/ directory under express gets served as static content (Just like Apache). So I placed my index.html there and used sendfile to handle requests with no file (eg: GET http://mysite/):
app.get('/', function(req,res) {
res.sendfile('public/index.html');
});
Following code worked for me.
var express = require('express'),
app = express(),
http = require('http'),
httpServer = http.Server(app);
app.use(express.static(__dirname + '/folder_containing_assets_OR_scripts'));
app.get('/', function(req, res) {
res.sendfile(__dirname + '/index.html');
});
app.listen(3000);
this loads page with assets
You could use a solution like this in node.js (link no longer works), as I've blogged about before.
The summarise, install connect with npm install connect.
Then paste this code into a file called server.js in the same folder as your HTML/CSS/JS files.
var util = require('util'),
connect = require('connect'),
port = 1337;
connect.createServer(connect.static(__dirname)).listen(port);
util.puts('Listening on ' + port + '...');
util.puts('Press Ctrl + C to stop.');
Now navigate to that folder in your terminal and run node server.js, this will give you a temporary web server at http://localhost:1337
Thank you to original posters, but their answers are a bit outdated now. It's very, very simple to do. A basic setup looks like this:
const express = require("express");
const app = express();
const dir = `${__dirname}/public/`;
app.get("/", (req, res) => {
res.sendFile(dir + "index.html");
});
app.get("/contact", (req, res) => {
res.sendFile(dir + "contact.html");
});
// Serve a 404 page on all other accessed routes, or redirect to specific page
app.get("*", (req, res) => {
// res.sendFile(dir + "404.html");
// res.redirect("/");
});
app.listen(3000);
The above example is if you want to serve individual HTML files. If you were serving a single page JS app, this would work.
const express = require("express");
const app = express();
const dir = `${__dirname}/public/`;
app.get("*", (req, res) => {
res.sendFile(dir + "index.html");
});
app.listen(3000);
If you need to serve other static assets from within a folder, you can add something like this before you start defining the routes:
app.use(express.static('public'))
Let's say you have a js folder inside public like: public/js. You could include any of those files inside of your html files using relative paths. For example, let's say /contact needs a contact.js file. In your contact.html file, you can include the script as easy as:
<script src="./js/contact.js"></script>
Building off of that example, you can do the same with css, images etc.
<img src="./images/rofl-waffle.png" />
<link rel="stylesheet" href="./css/o-rly-owl.css" />
Hope this helps everyone from the future out.
I have a basic Node.js app that I am trying to get off the ground using the Express framework. I have a views folder where I have an index.html file. But I receive the following error when loading the web page:
Error: Cannot find module 'html'
Below is my code.
var express = require('express');
var app = express.createServer();
app.use(express.staticProvider(__dirname + '/public'));
app.get('/', function(req, res) {
res.render('index.html');
});
app.listen(8080, '127.0.0.1')
What am I missing here?
You can have jade include a plain HTML page:
in views/index.jade
include plain.html
in views/plain.html
<!DOCTYPE html>
...
and app.js can still just render jade:
res.render(index)
Many of these answers are out of date.
Using express 3.0.0 and 3.1.0, the following works:
app.set('views', __dirname + '/views');
app.engine('html', require('ejs').renderFile);
See the comments below for alternative syntax and caveats for express 3.4+:
app.set('view engine', 'ejs');
Then you can do something like:
app.get('/about', function (req, res)
{
res.render('about.html');
});
This assumes you have your views in the views subfolder, and that you have installed the ejs node module. If not, run the following on a Node console:
npm install ejs --save
From the Express.js Guide: View Rendering
View filenames take the form Express.ENGINE, where ENGINE is the name of the module that will be required. For example the view layout.ejs will tell the view system to require('ejs'), the module being loaded must export the method exports.render(str, options) to comply with Express, however app.register() can be used to map engines to file extensions, so that for example foo.html can be rendered by jade.
So either you create your own simple renderer or you just use jade:
app.register('.html', require('jade'));
More about app.register.
Note that in Express 3, this method is renamed app.engine
You could also read the HTML file and send it:
app.get('/', (req, res) => {
fs.readFile(__dirname + '/public/index.html', 'utf8', (err, text) => {
res.send(text);
});
});
try this. it works for me.
app.configure(function(){
.....
// disable layout
app.set("view options", {layout: false});
// make a custom html template
app.register('.html', {
compile: function(str, options){
return function(locals){
return str;
};
}
});
});
....
app.get('/', function(req, res){
res.render("index.html");
});
app.get('/', function (req, res) {
res.sendfile(__dirname + '/public/index.html');
});
If you're using express#~3.0.0 change the line below from your example:
app.use(express.staticProvider(__dirname + '/public'));
to something like this:
app.set("view options", {layout: false});
app.use(express.static(__dirname + '/public'));
I made it as described on express api page and it works like charm. With that setup you don't have to write additional code so it becomes easy enough to use for your micro production or testing.
Full code listed below:
var express = require('express');
var app = express.createServer();
app.set("view options", {layout: false});
app.use(express.static(__dirname + '/public'));
app.get('/', function(req, res) {
res.render('index.html');
});
app.listen(8080, '127.0.0.1')
I also faced the same issue in express 3.X and node 0.6.16. The above given solution will not work for latest version express 3.x. They removed the app.register method and added app.engine method. If you tried the above solution you may end up with the following error.
node.js:201
throw e; // process.nextTick error, or 'error' event on first tick
^
TypeError: Object function app(req, res){ app.handle(req, res); } has no method 'register'
at Function.<anonymous> (/home/user1/ArunKumar/firstExpress/app.js:37:5)
at Function.configure (/home/user1/ArunKumar/firstExpress/node_modules/express/lib/application.js:399:61)
at Object.<anonymous> (/home/user1/ArunKumar/firstExpress/app.js:22:5)
at Module._compile (module.js:441:26)
at Object..js (module.js:459:10)
at Module.load (module.js:348:31)
at Function._load (module.js:308:12)
at Array.0 (module.js:479:10)
at EventEmitter._tickCallback (node.js:192:40)
To get rid of the error message. Add the following line to your app.configure function
app.engine('html', require('ejs').renderFile);
Note: you have to install ejs template engine
npm install -g ejs
Example:
app.configure(function(){
.....
// disable layout
app.set("view options", {layout: false});
app.engine('html', require('ejs').renderFile);
....
app.get('/', function(req, res){
res.render("index.html");
});
Note: The simplest solution is to use ejs template as view engine. There you can write raw HTML in *.ejs view files.
folder structure:
.
├── index.html
├── node_modules
│ ├──{...}
└── server.js
server.js
var express = require('express');
var app = express();
app.use(express.static('./'));
app.get('/', function(req, res) {
res.render('index.html');
});
app.listen(8882, '127.0.0.1')
index.html
<!DOCTYPE html>
<html>
<body>
<div> hello world </div>
</body>
</html>
output:
hello world
If you don't have to use the views directory, Simply move html files to the public directory below.
and then, add this line into app.configure instead of '/views'.
server.use(express.static(__dirname + '/public'));
If you want to render HTML file you can use sendFile() method without using any template engine
const express = require("express")
const path = require("path")
const app = express()
app.get("/",(req,res)=>{
res.sendFile(**path.join(__dirname, 'htmlfiles\\index.html')**)
})
app.listen(8000,()=>{
console.log("server is running at Port 8000");
})
I have an HTML file inside htmlfile so I used path module to render index.html path is default module in node. if your file is present in root folder just used
res.sendFile(path.join(__dirname, 'htmlfiles\\index.html'))
inside app.get() it will work
For my project I have created this structure:
index.js
css/
reset.css
html/
index.html
This code serves index.html for / requests, and reset.css for /css/reset.css requests. Simple enough, and the best part is that it automatically adds cache headers.
var express = require('express'),
server = express();
server.configure(function () {
server.use('/css', express.static(__dirname + '/css'));
server.use(express.static(__dirname + '/html'));
});
server.listen(1337);
To render Html page in node try the following,
app.set('views', __dirname + '/views');
app.engine('html', require('ejs').renderFile);
You need to install ejs module through npm like:
npm install ejs --save
With Express 4.0.0, the only thing you have to do is comment out 2 lines in app.js:
/* app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade'); */ //or whatever the templating engine is.
And then drop your static file into the /public directory. Example: /public/index.html
Express 4.x
res.sendFile(path [, options] [, fn])
Send .html files, no template engine...
//...
// Node modules
const path = require('path')
//...
// Set path to views directory
app.set('views', path.join(__dirname, 'views'))
/**
* App routes
*/
app.get('/', (req, res) => {
res.sendFile('index.html', { root: app.get('views') })
})
//...
.
├── node_modules
│
├── views
│ ├──index.html
└── app.js
I added below 2 line and it work for me
app.set('view engine', 'html');
app.engine('html', require('ejs').renderFile);
Try res.sendFile() function in Express routes.
var express = require("express");
var app = express();
var path = require("path");
app.get('/',function(req,res){
res.sendFile(path.join(__dirname+'/index.html'));
//__dirname : It will resolve to your project folder.
});
app.get('/about',function(req,res){
res.sendFile(path.join(__dirname+'/about.html'));
});
app.get('/sitemap',function(req,res){
res.sendFile(path.join(__dirname+'/sitemap.html'));
});
app.listen(3000);
console.log("Running at Port 3000");
Read here : http://codeforgeek.com/2015/01/render-html-file-expressjs/
I didn't want to depend on ejs for simply delivering an HTML file, so I simply wrote the tiny renderer myself:
const Promise = require( "bluebird" );
const fs = Promise.promisifyAll( require( "fs" ) );
app.set( "view engine", "html" );
app.engine( ".html", ( filename, request, done ) => {
fs.readFileAsync( filename, "utf-8" )
.then( html => done( null, html ) )
.catch( done );
} );
1)
The best way is to set static folder. In your main file (app.js | server.js | ???):
app.use(express.static(path.join(__dirname, 'public')));
public/css/form.html
public/css/style.css
Then you got static file from "public" folder:
http://YOUR_DOMAIN/form.html
http://YOUR_DOMAIN/css/style.css
2)
You can create your file cache.
Use method fs.readFileSync
var cache = {};
cache["index.html"] = fs.readFileSync( __dirname + '/public/form.html');
app.get('/', function(req, res){
res.setHeader('Content-Type', 'text/html');
res.send( cache["index.html"] );
};);
I was trying to set up an angular app with an express RESTful API and landed on this page multiple times though it wasn't helpful. Here's what I found that worked:
app.configure(function() {
app.use(express.static(__dirname + '/public')); // set the static files location
app.use(express.logger('dev')); // log every request to the console
app.use(express.bodyParser()); // pull information from html in POST
app.use(express.methodOverride()); // simulate DELETE and PUT
app.use(express.favicon(__dirname + '/public/img/favicon.ico'));
});
Then in the callback for your api routes look like: res.jsonp(users);
Your client side framework can handle routing. Express is for serving the API.
My home route looks like this:
app.get('/*', function(req, res) {
res.sendfile('./public/index.html'); // load the single view file (angular will handle the page changes on the front-end)
});
res.sendFile(__dirname + '/public/login.html');
Add the following Lines to your code
Replace "jade" with "ejs" & "X.Y.Z"(version) with "*" in package.json file
"dependencies": {
"ejs": "*"
}
Then in your app.js File Add following Code :
app.engine('html', require('ejs').renderFile);
app.set('view engine', 'html');
And Remember Keep All .HTML files in views Folder
Cheers :)
Here is a full file demo of express server!
https://gist.github.com/xgqfrms-GitHub/7697d5975bdffe8d474ac19ef906e906
hope it will help for you!
// simple express server for HTML pages!
// ES6 style
const express = require('express');
const fs = require('fs');
const hostname = '127.0.0.1';
const port = 3000;
const app = express();
let cache = [];// Array is OK!
cache[0] = fs.readFileSync( __dirname + '/index.html');
cache[1] = fs.readFileSync( __dirname + '/views/testview.html');
app.get('/', (req, res) => {
res.setHeader('Content-Type', 'text/html');
res.send( cache[0] );
});
app.get('/test', (req, res) => {
res.setHeader('Content-Type', 'text/html');
res.send( cache[1] );
});
app.listen(port, () => {
console.log(`
Server is running at http://${hostname}:${port}/
Server hostname ${hostname} is listening on port ${port}!
`);
});
It is very sad that it is about 2020 still express hasn't added a way to render an HTML page without using sendFile method of the response object. Using sendFile is not a problem but passing argument to it in the form of path.join(__dirname, 'relative/path/to/file') doesn't feel right. Why should a user join __dirname to the file path? It should be done by default. Why can't the root of the server be by defalut the project directory? Also, installing a templating dependency just to render a static HTML file is again not correct. I don't know the correct way to tackle the issue, but if I had to serve a static HTML, then I would do something like:
const PORT = 8154;
const express = require('express');
const app = express();
app.use(express.static('views'));
app.listen(PORT, () => {
console.log(`Server is listening at port http://localhost:${PORT}`);
});
The above example assumes that the project structure has a views directory and the static HTML files are inside it. For example, let's say, the views directory has two HTML files named index.html and about.html, then to access them, we can visit: localhost:8153/index.html or just localhost:8153/ to load the index.html page and localhost:8153/about.html to load the about.html. We can use a similar approach to serve a react/angular app by storing the artifacts in the views directory or just using the default dist/<project-name> directory and configure it in the server js as follows:
app.use(express.static('dist/<project-name>'));
index.js
var express = require('express');
var app = express();
app.use(express.static(__dirname + '/public'));
app.get('/', function(req, res) {
res.render('index.html');
});
app.listen(3400, () => {
console.log('Server is running at port 3400');
})
Put your index.html file in public folder
<!DOCTYPE html>
<html>
<head>
<title>Render index html file</title>
</head>
<body>
<h1> I am from public/index.html </h1>
</body>
</html>
Now run the following code in your terminal
node index.js
For plain html you don't require any npm package or middleware
just use this:
app.get('/', function(req, res) {
res.sendFile('index.html');
});
I wanted to allow requests to "/" to be handled by an Express route where previously they had been handled by the statics middleware. This would allow me to render the regular version of index.html or a version that loaded concatenated + minified JS and CSS, depending on application settings. Inspired by Andrew Homeyer's answer, I decided to drag my HTML files - unmodified - into a views folder, configure Express like so
app.engine('html', swig.renderFile);
app.set('view engine', 'html');
app.set('views', __dirname + '/views');
And created a route handler like so
app.route('/')
.get(function(req, res){
if(config.useConcatendatedFiles){
return res.render('index-dist');
}
res.render('index');
});
This worked out pretty well.
In server.js, please include
var express = require("express");
var app = express();
var path = require("path");
app.get('/',function(req,res){
res.sendFile(path.join(__dirname+'/index.html'));
//__dirname : It will resolve to your project folder.
});
If you are trying to serve an HTML file which ALREADY has all it's content inside it, then it does not need to be 'rendered', it just needs to be 'served'. Rendering is when you have the server update or inject content before the page is sent to the browser, and it requires additional dependencies like ejs, as the other answers show.
If you simply want to direct the browser to a file based on their request, you should use res.sendFile() like this:
const express = require('express');
const app = express();
var port = process.env.PORT || 3000; //Whichever port you want to run on
app.use(express.static('./folder_with_html')); //This ensures local references to cs and js files work
app.get('/', (req, res) => {
res.sendFile(__dirname + '/folder_with_html/index.html');
});
app.listen(port, () => console.log("lifted app; listening on port " + port));
This way you don't need additional dependencies besides express. If you just want to have the server send your already created html files, the above is a very lightweight way to do so.
I usually use this
app.configure(function() {
app.use(express.static(__dirname + '/web'));
});
Just be careful because that'll share anything in the /web directory.
I hope it helps