I'm trying to create a Facebook chatbot using NodeJS, Express, and a heroku server.
I created my webhook on heroku and had it verified and saved by Facebook. I then ran this code to connect my webhook to Facebook.
curl -ik -X POST "https://graph.facebook.com/v2.6/me/subscribed_apps?access_token=<token>"
this returned {success:true}.
So then I started adding code that would reply to incoming messages but I can't seem to get it to connect. Whenever I send a message I get no reply.
Here is my code:
var express = require('express');
var bodyParser = require('body-parser');
var request = require("request")
var app = express();
var port = process.env.PORT || 3000;
// body parser middleware
app.use(bodyParser.urlencoded({ extended: true }));
app.get('/', function (req, res) {
if (req.query['hub.verify_token'] === '8FKU9XWeSjnZN4ae') {
res.send(req.query['hub.challenge']);
console.log("app.get ran")
res.sendStatus(200)
}
console.log("Error: wrong validation token")
})
app.post('wyrdbot.herokuapp.com', function (req, res) {
messaging_events = req.body.entry[0].messaging;
console.log("app.post ran")
for (i = 0; i < messaging_events.length; i++) {
event = req.body.entry[0].messaging[i];
sender = event.sender.id;
if (event.message && event.message.text) {
text = event.message.text;
sendTextMessage(sender, "Text received, echo: "+ text.substring(0, 200));
}
}
res.sendStatus(200);
});
app.listen(port, function () {
console.log('Listening on port ' + port);
});
var token = "<myToken>";
function sendTextMessage(sender, text) {
messageData = {
text:text
}
request({
url: 'https://graph.facebook.com/v2.6/me/messages',
qs: {access_token:token},
method: 'POST',
json: {
recipient: {id:sender},
message: messageData,
}
}, function(error, response, body) {
if (error) {
console.log('Error sending message: ', error);
} else if (response.body.error) {
console.log('Error: ', response.body.error);
}
});
}
I have been trying to debug it and have realized the app.post function isn't running at all. I have also been getting errors saying my webhook has been disabled.
When I check my logs I find this printed out a bunch of times:
2016-04-20T14:13:31.487873+00:00 heroku[router]: at=info method=POST path="/" host=wyrdbot.herokuapp.com request_id=fa1e5270-5038-4e67-b7a6-c6852c7c3000 fwd="173.252.90.101" dyno=web.1 connect=0ms service=16ms status=404 bytes=212
I'm completely out of ideas about what to try. Anyone know what I'm missing?
Any help would be appreciated. Thanks!
Use app.use(bodyParser.json()); as facebook is sending JSON data in request body.
试试 app.post('/', function (req, res) {
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