Node.js Express API “无法获取”所有路线。 适用于本地主机但不适用于我的服务器

Question

My current code is:

var express = require('express');
const app = express();
var port = process.env.PORT || 3000;

app.get('/', function(req, res, next) {
    res.redirect('/api')
});

app.get('/api', function (req, res) {
    res.json({
        text: 'my api!'
    })
});

app.listen(port, function () {
    console.log('App listening on ' + port + '!');
});

The above code works as intended on localhost but when deployed onto the server I'm using, I get the following error:

Cannot GET /api

Failed to load resource: the server responded with a status of 404 (Not Found)

Answer 1

For this to work on any server you will have to define your port.

var express = require('express');
const app = express();
var port = process.env.PORT || 3000;

app.get('/', function(req, res, next) {
    res.redirect('/api')
});

app.get('/api', function (req, res) {
    res.json({
        text: 'my api!'
    })
});

//You can bind the IP address using the following code
app.listen(port, '<ip>', function () {
    console.log('App listening on ' + port + '!');
});

As I can see in your code you can access server it is on 3000

or if you have .env

You have to explicitly define your port number

PORT=80 //this may change depending on your choice

then access your server http://<address>:port

Answer 2

app.listen(port, <your public ip>, () => {
   console.log('App listening on ' + port + '!'); 
});