问题描述
我正在使用express.js 4创建一个非常简单的节点API，但是我需要一些实时事件，我添加了socket.io。我很新，所以我可能错过了一些基本的东西，但我找不到很好的文档/ tuts。
在快速应用程序快速生成器）我有一些这样的基于简单的例子和项目文档，我读。这可以正常工作，从客户端应用程序，我可以发送/接收套接字事件：
c code code code code code code code code code code code $ c $ pre> var express = require（'express'）;
var router = express.Router（）;
var io = ???;
router.put（'/ foo'，function（req，res）{
/ *
做更新foo资源的东西
...
* /
//现在播放更新的foo ..
io.sockets.emit（'update'，foo）; //如何？
}）;
module.exports = router;
修改你的文件一点点，你可以检查它是否有效？
您可以将您定义的io您的路线传递到下面;
require（'./ routes / api'）（app，io）;
我没有测试Socket.IO部分b没有语法错误，路由也工作。
server.js文件：
var express =表现'）;
var app = express（）;
var path = require（'path'）;
var logger = require（'morgan'）;
var io = require（'socket.io'）。listen（app.listen（3000））;
app.use（logger（'dev'））;
app.use（express.static（path.join（__ dirname，'public'）））;
io.sockets.on（'connection'，function（socket）{
console.log（'client connect'）;
socket.on（'echo'，function （数据）{
io.sockets.emit（'message'，data）;
}）;
}）;
require（'./ routes / api'）（app，io）;
console.log（端口3000服务器侦听）;
api.js：
module.exports = function（app，io）{
app.put（'/ foo'，function（req，res）{
/ *
做更新foo资源的东西
...
* /
//现在广播更新的foo ..
console.log（PUT OK！）;
io.sockets.emit（'update'）; //如何？
res.json（{result：通过IO发送更新}）;
}）;
}
I'm trying to create a really simple node API using express.js 4 but I need a few 'realtime' events for which I added socket.io. I'm fairly new to both so I'm likely missing something basic but I can't find good docs/tuts on this.
In the express app (created with the express generator) I have something like this based on simple examples and project docs that I read. This works OK and from client apps, I can send/receive the socket events:
var express = require('express');
var path = require('path');
var logger = require('morgan');
var api = require('./routes/api');
var app = express();
var io = require('socket.io').listen(app.listen(3000));
app.use(logger('dev'));
app.use(express.static(path.join(__dirname, 'public')));
app.use('/api', api);
io.sockets.on('connection', function (socket) {
console.log('client connect');
socket.on('echo', function (data) {
io.sockets.emit('message', data);
});
});
// error handlers omitted
module.exports = app;
but I want to use the sockets from my API routes (in the ./routes/api.js file that I 'require' above). For example, someone might use the API to PUT/POST a resource and I want that broadcast to connected socket.io clients.
I cannot see how to use the 'io' variable or organise the code currently in the io.sockets.on('connection' ... function inside express routes. Here's the ./routes/api.js file:
var express = require('express');
var router = express.Router();
var io = ???;
router.put('/foo', function(req, res) {
/*
do stuff to update the foo resource
...
*/
// now broadcast the updated foo..
io.sockets.emit('update', foo); // how?
});
module.exports = router;
I've modified your files a little bit, may you check if it works?
You can pass the io you've defined to your routes like below;
require('./routes/api')(app,io);
I didn't test the Socket.IO parts but there is no syntax error and routes also working.
server.js file:
var express = require('express');
var app = express();
var path = require('path');
var logger = require('morgan');
var io = require('socket.io').listen(app.listen(3000));
app.use(logger('dev'));
app.use(express.static(path.join(__dirname, 'public')));
io.sockets.on('connection', function (socket) {
console.log('client connect');
socket.on('echo', function (data) {
io.sockets.emit('message', data);
});
});
require('./routes/api')(app,io);
console.log("Server listening at port 3000");
api.js:
module.exports = function(app,io) {
app.put('/foo', function(req, res) {
/*
do stuff to update the foo resource
...
*/
// now broadcast the updated foo..
console.log("PUT OK!");
io.sockets.emit('update'); // how?
res.json({result: "update sent over IO"});
});
}
这篇关于express.js 4和带快速路由器的套接字的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！