Question

无法集成socket io和express js。下面是我的HTML代码。

<html>
<head>
</head>
<body>
hello world.
<script src="https://cdn.socket.io/socket.io-1.3.5.js"></script>
<script src="http://code.jquery.com/jquery-1.11.1.js"></script>
<script>
   var socket = io();
</script>
</body>
</html>

这是我的快递js的app.js。

var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');

var routes = require('./routes/index');
var users = require('./routes/users');

var app = express();

var server = require('http').Server(app);
var io = require('socket.io')(server);

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.get('/', function(req, res){
  res.sendFile(path.join(__dirname, 'public', 'index.html'));
});

io.on('connection', function(socket){
  console.log('client connected.');
});

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
  app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
      message: err.message,
      error: err
    });
  });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
  res.status(err.status || 500);
  res.render('error', {
    message: err.message,
    error: {}
  });
});

module.exports = app;

问题：无法使用express连接套接字io。下面是运行应用程序时在开发人员控制台中显示错误的图像。

Answer 1

使用相同的代码，删除var routes = ...和var users = ...

并在最后添加server.listen(3000);而不是导出它只适合我。

https://dripr.io/file/NkWBbbHR

表达js - socket io连接

1 个答案: