How to make GET request inside a GET request in NodeJS using Express

问题

Basically, I'm trying to get Access Token from Facebook in my callBack GET method. Below is my code.

getAccessToken is not called at all. What's the right way to implement it?

app.get('/fbcallback', function(req, res) {


  var code = req.query.code;

  var getAccessToken =  'https://graph.facebook.com/v2.12/oauth/access_token?'+
   'client_id='+client_id+
   '&redirect_uri='+redirect_uri+
   '&client_secret='+client_secret+
   '&code='+code;


   app.use(getAccessToken, function(req, res) {

        console.log('Token Call');

   });


});

回答1:

You should not use app.use inside get the call.

You must be trying to do something like below. Inside get call make another get call for getting token.

var request = require('request');

app.get('/fbcallback', function (req, res) {
    var code = req.query.code;
    var getAccessToken = 'https://graph.facebook.com/v2.12/oauth/access_token?' +
        'client_id=' + client_id +
        '&redirect_uri=' + redirect_uri +
        '&client_secret=' + client_secret +
        '&code=' + code;

    request(getAccessToken, function (error, response, body) {
        console.log('error:', error); // Print the error if one occurred
        console.log('statusCode:', response && response.statusCode); // Print the response status code if a response was received
        console.log('body:', body); // Print the HTML for the Google homepage.
    });
});

来源：https://stackoverflow.com/questions/49318921/how-to-make-get-request-inside-a-get-request-in-nodejs-using-express