How to Create Simple JSON-Source Endpoint using Express

Sometime you might need to create a simple endpoint for tutorials and mini projects,

Advantages of this method are :

• No need to setup complex database config
• Useful for simple example project (for tutorials, mini project, etc)
• Easy to create and config your own JSON file

Here’s step-by-step to create your own service endpoint using JSON file, with express.

1. Install Node Js
2. Create file named server.js as follows :

//server.js
const data = require('./json/user.json')
const express = require('express')
const app = express()
const port = 3000
app.get('/', (req, res) => res.send('Hello World!'))
app.get('/user', function (req, res) {
  res.json(data);
})
app.listen(port, () => console.log(`Example app listening on port ${port}!`))

3. Create json file, you can use the help of json generator (https://www.json-generator.com/) as follows :

//user.json
[
 {
  "user_id": "5dafc00fcf290b2c87adc27c",
  "balance": "$2,452.36",
  "age": 36,
  "name": "Taylor Mooney"
 },
 {
  "user_id": "5dafc00fb80d4ee1233a2eb9",
  "balance": "$1,835.88",
  "age": 27,
  "name": "Barrera Dillard"
 },
...

4. Run your server, make sure PORT 3000 is not used. Run it using command ``node server.js``

5. Result :

You can user this as following to your simple mini project.