问题
Here is my complete error:
Error: Cannot find module 'ejs'
at Function._resolveFilename (module.js:317:11)
at Function._load (module.js:262:25)
at require (module.js:346:19)
at View.templateEngine (/Users/shamoon/local/node/lib/node_modules/express/lib/view/view.js:133:38)
at Function.compile (/Users/shamoon/local/node/lib/node_modules/express/lib/view.js:65:17)
at ServerResponse._render (/Users/shamoon/local/node/lib/node_modules/express/lib/view.js:414:18)
at ServerResponse.render (/Users/shamoon/local/node/lib/node_modules/express/lib/view.js:315:17)
at /Users/shamoon/Sites/soldhere.in/app.js:26:7
at callbacks (/Users/shamoon/local/node/lib/node_modules/express/lib/router/index.js:272:11)
at param (/Users/shamoon/local/node/lib/node_modules/express/lib/router/index.js:246:11)
My source code is also very simple:
var express = require('express');
var app = module.exports = express.createServer();
// Configuration
app.configure(function(){
app.use(express.bodyParser());
app.use(app.router);
app.use(express.static(__dirname + '/public'));
});
app.set('view engine', 'ejs');
app.set('view options', {
layout: false
});
app.get('/', function(req, res) {
res.render('index', {
message : 'De groeten'
});
});
app.listen(3000);
console.log("Express server listening on port %d in %s mode", app.address().port, app.settings.env);
In my folder, I have ejs installed in node_modules which I got using npm install ejs.
so my question is.. what gives? What am I doing wrong so that node can't find EJS when I clearly have it installed?
Thanks
回答1:
I had this exact same problem a couple of days ago and couldn't figure it out. Haven't managed to fix the problem properly but this works as a temporary fix:
Go up one level (above app.js) and do npm install ejs. It will create a new node_modules folder and Express should find the module then.
回答2:
Install express locally
(npm install express while in the project's root directory)
Your project depends on both express and ejs, so you should list them both as dependencies in your package.json.
That way when you run npm install in you project directory, it'll install both express and ejs, so that var express = require('express') will be the local installation of express (which knows about the ejs module that you installed locally) rather than the global one, which doesn't.
In general it's a good idea to explicitly list all dependencies in your package.json even though some of them might already be globally installed, so you don't have these types of issues.
回答3:
I had the same issue. Once I set environment variable NODE_PATH to the location of my modules (/usr/local/node-v0.8.4/node_modules in my case) the problem went away. P.S. NODE_PATH accepts a colon separated list of directories if you need to specify more than one.
回答4:
I my case, I just added ejs manually in package.json:
{
"name": "myApp"
"dependencies": {
"express": "^4.12.2",
"ejs": "^1.0.0"
}
}
And run npm install (may be you need run it with sudo) Please note, that ejs looks views directory by default
回答5:
I installed ejs using command npm install ejs in express directory level and this solved my problem.
i have install express using steps mention in express guide http://expressjs.com/guide.html
回答6:
Install it locally rather installing it globally. Then your project may be run on any machine without any error.I think its better.
npm install express --save
npm install ejs --save
回答7:
Reinstalling npm, express and ejs fixed my problem
This one worked for me,
- On your terminal or cmd -> Go to your apps directory,
- cd pathtoyourapp/AppName
- rerun your 'npm install'
- rerun your 'npm install express'
- rerun your 'npm install ejs'
after that, the error was fixed.
回答8:
After you've installed Express V x.x.x You need to choose an template view-engine. There are many really easy to learn. My personal go-to is EJS.
Other really great and easy to learn could be:
- Handlebars
- PUG (Former Jade)
To install EJS (And fix your error) Run in root of your project:
npm install ejs
Or if you're using Yarn:
yarn add ejs
Next you'll need to require the module, so open up your file where you require express (usually app.js or server.js)
add below var express = require('express');
var ejs = require('ejs');
回答9:
I had this problem. I debugged using node-inspector and saw that from the node_modules folder where the express source files were, ejs was not installed. So I installed it there and it worked.
npm install -g ejs didn't put it where I expected it to despite NODE_PATH being set to the same node_modules folder. Prob doing it wrong, just started with node.
回答10:
I installed both: express and ejs with the option --save:
npm install ejs --save npm install express --save
This way express and ejs are dependecies package.json file.
回答11:
STEP 1
See npm ls | grep ejs at root level of your project to check if you have already added ejs dependency to your project.
If not, add it as dependencies to your project. (I prefer adding dependency to package.json instead of npm installing the module.)
eg.
{
"name": "musicpedia",
"version": "0.0.0",
"private": true,
"scripts": {
"start": "node ./bin/www"
},
"dependencies": {
"body-parser": "~1.15.1",
"cookie-parser": "~1.4.3",
"debug": "~2.2.0",
"express": "~4.13.4",
"jade": "~1.11.0",
"ejs": "^1.0.0",
"morgan": "~1.7.0",
"serve-favicon": "~2.3.0"
}
}
STEP 2 download the dependencies
npm install
STEP 3 check ejs module
$ npm ls | grep ejs
musicpedia@0.0.0 /Users/prayagupd/nodejs-fkers/musicpedia
├── ejs@1.0.0
回答12:
Add dependency in package.json and then run npm install
{
...
...
"dependencies": {
"express": "*",
"ejs": "*",
}
}
回答13:
I think ejs template engine is not properly installed on your machine. You just install the template engine using npm
npm install ejs --save
then include the following code in app.js
app.set('view engine', 'ejs')
回答14:
Way back when the same issue happened with me.
Dependency was there for ejs in JSON file, tried installing it locally and globally but did not work.
Then what I did was manually adding the module by:
app.set('view engine','ejs');
app.engine('ejs', require('ejs').__express);
Then it works.
回答15:
I have the same issue it resolve after installing the express in my project directory. previously i install it in global scope with -g option with npm install command.
回答16:
In my case there was no silly syntax error, but same error arised. I had installed ejs and ejs-mate globally. I installed it locally and found my error resolved.
回答17:
kindly ensure that your dependencies in your package.json files are up to date. Try reinstalling them one at a time after also ensuring that your NPM is the latest version (up-to-date). It worked for me. I advise you to run npm install for the packages(thats what worked in my own case after it refused to work because I added the dependencies manually).
回答18:
In my case it was a stupid mistake- it was a typo in the middleware. I wrote app.set('view engine', 'ejs.'); the dot caused the error. I installed ejs and express locally
回答19:
Ensure all dependencies are installed. npm install
I was making a quick app for myself and I had forgotten to add express. Threw the above error.
回答20:
app.set('view engine', 'ejs')
and then in the terminal
npm install ejs --save
resolves the issue
回答21:
I face same error for ejs, then i just run node install ejs
This will install ejs again.
and then also run npm install to install node_modules again.
That's work for me.
来源：https://stackoverflow.com/questions/7754799/error-cannot-find-module-ejs