How to get data in express js - node.js

Question

For the first time ever i am trying to understand expressJs and I have testing route which returns simple test sentence as JSON, but i can't get in in expressJs.
test.js
var express = require('express');
var router = express.Router();
/* GET home page. */
router.get('https://mysite.ccc/api/test', function(req, res, next) {
res.json(data)
});
module.exports = router;
apps.js
var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var indexRouter = require('./routes/index');
var testRouter = require('./routes/test'); ////////////////////////////////////////////////////////here
var app = express();
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', indexRouter);
app.use('/test', testRouter); ////////////////////////////////////////////////////////here
// catch 404 and forward to error handler
app.use(function(req, res, next) {
next(createError(404));
});
// error handler
app.use(function(err, req, res, next) {
// set locals, only providing error in development
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
// render the error page
res.status(err.status || 500);
res.render('error');
});
module.exports = app;
I'm not sure but i guess it suppose to show my api sentence in http://127.0.0.1:3000/test instead with:
this command: set DEBUG=myapp:* & npm start it says: 404 not found
and with this command npm start it says request is not defined
what did i do wrong?

Answer 1

👨‍🏫 You can change your test.js with this code below: 👇
var express = require('express');
var router = express.Router();
var axios = require('axios');
/* GET home page. */
router.get('/', async function(req, res, next) {
try {
const response = await axios.get('https://mysite.ccc/api/test');
console.log(response.data);
res.json(response.data)
}catch(ex) {
console.log(ex)
res.status(400).send(ex.message);
}
});
module.exports = router;
I hope it's can help 🙏.

Answer 2

Your test.js file should look like this
var express = require('express');
var router = express.Router();
/* GET home page. */
router.get('/', function(req, res, next) {
// I don't see where you defined data, should be smth like: const data = {};
res.json(data);
});
module.exports = router;
Here you define your route, so when you start your app you are able to access the route http://127.0.0.1:3000/test.
You probably want to retrieve data from external website? For this you can use any http package, for example axios.
Your final test.js file will look like:
var express = require('express');
var router = express.Router();
var axios = require('axios');
/* GET home page. */
router.get('/', async function(req, res, next) {
const response = await axios.get('https://mysite.ccc/api/test');
res.json(response.data);
});
module.exports = router;
Note: I hope you somewhere call app.listen(3000) to start your web server.