Question

来自我的server.js：

var app  = require('express')();
var server = require('http').createServer(app);
var io = require("socket.io").listen(server);

server.listen(port,function (){
       console.log('Listening is at ' + port);  
});

现在我正尝试将app和io传递给模块：

require('./routes/moduleX.js')(app,io);

在./routes/moduleX.js：

module.exports = function(app,io){

      app.get('/moduleXX',function(req,res){ /
           res.render('moduleXX.ejs');

           var dataToBeSent = {
                  YYYY: 10,
                  NNNNN: 5,
                  TTTTT: [2,4,5,6,7],
           };

           io.sockets.on('connection', function (socket) {
                  console.log('Client Connected');
            socket.emit('subReady', { prep: dataToBeSent });
           });      

      });
     }

我收到TypeError: Cannot read property 'sockets' of undefined

我的问题是为什么io在这里未定义？以及如何正确地做到这一点。

Answer 1

更改以下代码

io.sockets.on('connection', function (socket) {
    console.log('Client Connected');
    socket.emit('subReady', { prep: dataToBeSent });
});

到

io.on('connection', function (socket) {
    console.log('Client Connected');
    socket.emit('subReady', { prep: dataToBeSent });
});

将app和io传递给模块

1 个答案: