Setup proxy server with Express

February 20, 2015

The problem:

I am working on a project using BreweryDB. I was trying to load some data from the API, but they don’t support jsonp. There is a CORS issue if I directly fetch data using Angular:

    XMLHttpRequest cannot load []( No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:3000' is therefore not allowed access.

My solution:

I don’t want to expose my API key, so I have to setup an intermediate proxy. The following code illustrates step by step on how to setup a proxy using node/express.

Step 1: Install express and request

    npm install express --save npm install request --save

Step 2: Create server.js

    var express = require('express');
    var request = require('request');
    var app = express();

Step 3: Setup the route (replace API_KEY with your API key)

    app.get('/api', function(req, res){
      request('' + API_KEY, function (error, response, body) {
        if (!error && response.statusCode === 200) {

Step 4: Setup the port

    console.log('Server running on port %d', 3000);

Step 5: Start the server (node server.js)

Open your brower at http://localhost:3000/api, you should be able the get the json object and log in your browser console:

    "message":"Request Successful",
    "data":"You have reached the API. For access, check out",

Send me an email if you have any problem ☺

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