how to call URL from local env in Express JS-CodePudding

i have an issue on my code (Weather App using OpenWeahterMap Api) after i tried to move my apiKey and apiUrl to the .env file, i already got this error in the terminal and it's not clear why its happend

here is my code :

const express = require("express");
const https = require("https");
const { restart } = require("nodemon");
const bodyParser = require("body-parser");
const dotenv = require('dotenv');

const app = express();

app.use(bodyParser.urlencoded({extended: true}));
app.use('/css', express.static(__dirname   '/node_modules/bootstrap/dist/css'));

    // The app will redirect to index.html page
app.get("/", function(req, res){
    res.sendFile(__dirname   "/index.html");
})

app.post("/", function(req, res) {
    
    dotenv.config({ path: '/.env' });
    require('dotenv').config();

    const weatherUrl = process.env.API_URL;
    const apiKey = process.env.API_KEY;
    const city = req.body.cityName;
    const unit = "metric";

    const url = weatherUrl   city   "&appid="   apiKey   "&units="   unit

    // the response will recive the data and will parse the jsonData from the API
    // and will print the the current temprerature   description   weather icon 
    https.get(url, function(response){

        response.on("data", function(data){
            const weatherData = JSON.parse((data)); 
            const temp = weatherData.main.temp;
            const weatherDescription = weatherData.weather[0].description;
            const weatherIcon = weatherData.weather[0].icon;
            const imageUrl = "http://openweathermap.org/img/wn/"   weatherIcon   "@2x.png"

            res.write("<p>The Weather is currently "   weatherDescription   "</p>");
            res.write("<h1>The temprerature in"   city   "now is "  temp   " degress Celcius.</h1>");
            res.write("<img src="   imageUrl   ">");
            res.send();
        })
    })
})

    // default port can be change 
app.listen(3333, function() {
    console.log("Server is running on port 3333");
});

the error message :

Server is running on port 3333
/Programming/JS/WeatherApp/app.js:35
            const temp = weatherData.main.temp;
                                          ^

TypeError: Cannot read property 'temp' of undefined

i am not sure where is exactly the problem because it's first time i am using Express JS

CodePudding user response：

You need to identify where your path is for your .env file if it is in the same directory as this file then you need to put ./.env if it is in a directory above this one you need to put ../.env or two directories ../../.env. /.env doesn't mean anything

The .env file should also not have semi colons to delimit the end of your keys.