相关疑难解决方法(0)

我试图在谷歌应用引擎上测试一个相当简单的node.js应用.如下所示,它所要做的就是收听Firebase数据库中的更改,然后向用户发送GCM消息:

var Firebase = require("firebase");
var gcm = require('node-gcm');

// Create a reference to the push notification queue
var ref = new Firebase("firebaseDB");

var message = new gcm.Message();

var regTokens = ['A user GCM reg token'];

// Set up the sender with you API key
var sender = new gcm.Sender('GCM sender ID');

message.addData('syncNewData', 'Hello Member!');

ref.on("value", function(snapshot) {

    // Now the sender can be used to send messages
    sender.send(message, { registrationTokens: regTokens }, function (err, response) {
        if(err) console.error(err);
        else …