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Render basic HTML view?

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?


A
Andrew Homeyer

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)

Just to note that what I want was to serve only one .html file because my app was single page ;)
Can We included multiple HTML/JS pages with this method ?
shouldn't you be able to render that html page without a jade template just for initial testing of express?
So do we have to create a jade template for each of our HTML files?
More of a hack rather than a solution.
D
Drew Noakes

Many of these answers are out of date.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

why does the res.render require the .html extension in this case but not in the default case with jade. with the boilerplate code, it just calls res.render('index', { title: 'Express' }); but here, it's : res.render('about.html');
@Transcendence, I'm not sure exactly. Perhaps you should open a new question.
With Express 3.4.2: app.set('view engine', 'ejs');
You should use the command 'npm install ejs --save' to update your package.json
why do you need ejs?
n
nbro

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


Note- app.register has been renamed app.engine in Express 3.
See answer from Andrew Homeyer. It is the actual answer.
From some other answer, for Express 4 I ended up using app.engine('.html', require('ejs').renderFile);
In express 4, you could also use: app.set('view engine', 'jade');
E
Edwin Pratt

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);
    });
});

this solution is bad because no caching of the files ; it is read for every request.
its potentially pretty easy to cache it manually. Just store the read file a variable, and only read again, if that variable is blank. You could also use a JS object and store various files in various variables, with timestamps. Sure its more work than most people would do, but it's good with people new to node. It's easy to understand
Yikes. This defeats the entire point of convention-oriented, streamlined architectures (like MVC).
@MarcelFalliere You're assuming that he wants to cache the file, or that he doesn't want to use a custom caching solution. Thank you keegan3d for the answer.
@MarcelFalliere Then, what is the right solution? I see other answers that requiere new dependencies. Is it necessary just for serve html files?
s
spectrum

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");
});

had trouble with the exact configuration above, so I removed the dot from ".html" and added this: app.set('view engine', 'html'); app.set('views', __dirname + '/views'); for a perfect render
This is a bit weird... you should serve html as static files. This also gives you the benefit of better caching. Creating a custom "html compiler" seems wrong. If you need to send a file from within a route (which you very rarely need to do) just read and send it. Otherwise just redirect to the static html.
@Enyo this comment seems odd, considering HOW TO do what you are saying should be done is THE QUESTION BEING ASKED, and your answer is to just do it. How do you serve a static html with caching?
I see an error on app.register. Perhaps it's been deprecated in express 3.0.0.rc3? TypeError: Object function app(req, res){ app.handle(req, res); } has no method 'register'
@enyo, you missed the point of the steamlined architecture. When the pattern is controller/view (or /processor/view, whatever your specific architecture is), you can't deviate from that with with the obsolete model of extensions. You need to treat your HTML as rendered content like everything else. Keep it DRY, dude.
n
nod
app.get('/', function (req, res) {
res.sendfile(__dirname + '/public/index.html');
});

sendfile is not cache in production mode so this is not a good solution.
@SeymourCakes Kindly correct me if I'm wrong, but I think sendFile now supports caching: devdocs.io/express/index#res.sendFile
n
nbro

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')

Why do you repeat app.use(express.static(__dirname + '/public')); after you start the server with app.listen?
what's the diff of serving the html page as static vs. just loading it non-static with express?
p
phant0m

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.


Do you have to install ejs globally?
it's tell me it can't find the 'index.html' file
K
KARTHIKEYAN.A

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


s
spectrum

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'));

B
Bhargav Rao

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


C
Community

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);

server.configure is deprecated, so directly use server.use
G
Geeky Ninja

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


This solution worked for me. Although I tried static option too. Can you explain the mechanism behind it. Thanks!
u
u84six

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


D
Drozerah

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 had to use var app = express(); app.set('views', path.join(__dirname, '../views'));. Without the "../folderName" it was looking in the routes folder.
N
Naren Chejara

I added below 2 line and it work for me

    app.set('view engine', 'html');
    app.engine('html', require('ejs').renderFile);

it gives me the following error "Error: Cannot find module 'ejs' at Function.Module._resolveFilename (module.js:338:15) at Function.Module._load (module.js:280:25) at Module.require (module.js:364:17) at require (module.js:380:17) "
@LygubOrg run npm install ejs --save in your working directory.
is it necessary to add a dependency only to serv a html file?
S
Shaikh Shahid

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/


O
Oliver Salzburg

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 );
} );

T
Tomáš

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"] );                                
};);

C
Connor Leech

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)
});

A
Aleksandr M
res.sendFile(__dirname + '/public/login.html');

A
Amulya Kashyap

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 :)


x
xgqfrms

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}! `); });


V
Vighnesh Raut

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>'));

P
Pavan Dittakavi

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


S
Shivam Chhetri

For plain html you don't require any npm package or middleware

just use this:

app.get('/', function(req, res) {
    res.sendFile('index.html');
});

C
Community

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.


s
shumana chowdhury

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.
});

a
aleph_one

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.


D
DiogoNeves

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