I am new to node. I have created and successfully tested the node app in Heroku. My folder structure is something like this .
app.js ( the server side socket.iofile).
index.html (publicly available file).
when i access the app through the URL from Heroku.
If i access the app.js file like appname.herokuapp.com/app.js i can access the file. Is any way to prevent accessing this server file ?
Regards
Harilal
Well, probably you are using express.static() due to which it can access any static file from your directory.Anyways, you can create a route for app.js:
var app=express();
app.use(app.router); //this will make sure that node.js will check for a route before checking for app.js file and displaying it.
app.use(express.static(__dirname+'/directoryPath'));
//now set the route for app.js
app.get('/app.js',function(req,res){
//what-ever you want should happen when u go to appname.herokuapp.com/app.js
});
Actually am not using the "express".
My code is something like this
http://pastebin.com/7BcZZsMk
My folder structure is like the following:
app
----css
--------style.css
----images
--------cup.png
--------tree.png
----app.js
----index.html
Related
I have an Express server that contains a public folder containing 5 images. I want to load those images inside of my ReactJS app. How would I do that?
I'm already using:
app.use("/static", express.static(path.join(__dirname, "public")));
and I can access them when I manually type in the URL, but I'm unable to figure out how to serve them all in my React app.
Any help would be much appreciated.
I am (very) new to node.js and I am trying to get a development environment started with React.
const express = require('express')
const mongoose = require('mongoose')
const app = express()
// this displays the index.html file
app.use(express.static(__dirname + '/public'));
// trying to see the app.js
app.get('/', (req, res) => {
res.render('app')
})
app.listen(process.env.PORT || 5000);
Right now I am simply trying to be able to view my app.js when I run nodemon. But right now it is only showing the index.html file in the public folder. and when I run npm start it renders both the index.html and the app.js.
I am 100% doing something wrong and am not in my element here. Any help/advice would be appreciated.
My full repo is here for viewing here
Thank you in advance.
Your code is simply serving a static HTML file located in the public directory everytime the user make a GET request to the root (in your case, localhost:5000). It is not interacting with React yet.
Usually when starting a project with React (frontend) and Node (backend), you would create them as separate projects, in separate repositories.
So you could create a React application using a bootstrap such as create-react-app running on PORT 3000 and in another terminal tab, start your NodeJS application in PORT 5000 like in your example. Then, you can call your backend endpoint from your frontend React application, by referencing http://localhost:5000
By doing this, your backend code don't need to serve static files anymore, it can return data such as JSON and make connections to a database for example.
Since your question is not specific enough, you could be talking about server side render. In server side render apps using Node and React, you have a frontend built with React and a Node server that will return the same React code as a string, using the react-dom/server package to help. This is more complex, but basically you will have the same React code on the client AND on the server. There are performance benefits, because the user can see some content rendered right when he enters the page, without having to wait the React bundle (javascript file) to load. If you want to know more about creating a server side render app with React and Node, there is a nice digital ocean tutorial here
If you want to connect your react js project to the node js
In Development
you simply run their server and start it
In Production
You can use sendFile function coming from express.js to run the frontend
https://dev.to/loujaybee/using-create-react-app-with-express
I head to create Nuxt SPA with routing and mb API in future like that:
Backend server (on express or smth else) listen and on request give entire SPA to client.
Now user can use everything on client side (include routing) with no more else requests to backend (mb API requests only)
It means that server should give some .html file with js and css files as SPA and it will work on client side.
I tried to run some commands like nuxt build and nuxt generate
It looks like they return a same result - js files couldn't be found
And index.html file doesn't work properly
After some researching I found a solution
But now I got this:
It can't open the fourth js file in another js file. Path isn't right!
Every time I tried to run it as a static html file and from localhost (and also with using Live Server)
I think I did a lot of crutches and there should be another built-in function or feature that allows us to do what I want
I wrote a lot - if I made a mistake or you didn't get smth - please, ask! I need any help
To test your locally built application, you need to serve all files within the generated /dist folder. You can setup very easily a local web server using Express/Node.js as you already have Node.js installed when running Nuxt. Create a new folder and install express via npm (run npm install express).
Then, copy everything from /dist into /public and create a file server.js:
const express = require('express');
const app = express();
app.use(express.static(__dirname + '/public'));
app.listen(3000);
Run the web server with node server.js and you can access your generated files on http://localhost:3000.
I have a web app. Back end with node and front end with React. Setup (simplified) goes like this:
index.js (the server)
client
package.json
The client
Now, the client folder contains a front end web application, its contents are basically same as what you get when you type create-react-app.
Inside client there is a build folder which I created by running npm run build from within the client folder.
Server
Now, the index.js from my main folder acts as the node server, inside it I have a line like:
app.use(express.static(__dirname + "/client/build"));
Using this approach I have merged my node server and a client front end application (located inside client folder). You can see I told the server to serve files from the client/build.
All was working fine, till I encountered this.
If I click a react button in my client app which manually calls my router using say:
this.props.router.push('/listmovies');
it correctly shows the page.
But if I type same page in URL address bar and hit ENTER I get error:
Cannot GET /listmovies
The latter error I am pretty sure comes from node server. Because there is no listener for listmovies in index.js (and there should not be). You see basically I think node is intercepting the call and giving me an error. Whereas in my former case where I called router.push I get a correct page.
I hope I managed to explain my problem. Can someone help how to solve this issue?
You have to make the express application redirect all requests to the main React file so react-router can take over. Something like this below the app.use.
app.get('*', function(req, res) {
res.sendFile(__dirname + '/client/build/index.html')
})
This basically handles all wildcards and points it to the index.html. Mind you if you are also implementing API routes on the express app have them above this wildcard statement because otherwise it will intercept them and treat them as client side react-router routes instead of server-side API routes.
This is my folder structure:
- getable_challenge
- node_modules
- stuff
- main.html
- main.js
- backend.js
- README.md
I want to load main.js from within main.html. Previously I had been accessing the page using the URL of file:///Users/adamzerner/code/getable_challenge/main.html, and a simple <script src="main.js"></script> allowed me to load the script.
But then I set up a Node server, at localhost:3000, and now it won't load the script. It's trying to load localhost:3000/main.js, which presumably is the wrong path. I'm not sure how to structure this... what should I do?
Server code (essentially)
var express = require('express');
var app = express();
app.listen(3000);
When you use the "file" protocol like that you aren't even using the web app to serve the script, you are directly accessing it on the local file system. That works fine when you are just running your app on your local machine but it completely breaks when you try to run it as a real app since the browser will have no idea where "file:///..." is, or even have permission to access it.
You need to put the client side scripts into a separate directory, usually named 'public', and then make your application aware of it. If you're using express you would do this:
app.use(express.static(__dirname + '/public'));
You want to put your statically served scripts ("public") into a separate directory so as to control access by your clients. If you just put them into the main directory and made the main directory accessible you could expose all your other files to public view, such as config files that sometimes contain passwords.
It also makes your structure much cleaner.
Try adding this line after var app
app.use(express.static(__dirname));
This should make your resources that are within your servers folder accessible. the var __dirname is the path to where your server is executed.