Javascript Express 4：我在app.js中设置了一个变量，我需要将它发送到我的路由

下面是我添加到app.js页面的内容。（使用快速生成器）

app.js

var express = require('express');
var socket_io = require( "socket.io" );

var app = express();

// Socket.io
var io = socket_io();
app.io = io;

var express = require('express');
var socket_io = require( "socket.io" );

var app = express();

// Socket.io
var io = socket_io();

var route = require('./route')(io);

module.exports = function(io) {
    io.on('connection', function (socket) {
       console.log("connection made!");
    });
};

module.exports.init = function(io) {
    io.on('connection', function (socket) {
       console.log("connection made!");
    });
};

var express = require('express');
var socket_io = require( "socket.io" );

var app = express();

// Socket.io
var io = socket_io();

var Route = require('./route');

var r = new Route(io);
r.doSomething();

var Route = function(io) {
    this.io = io;
    io.on('connection', function (socket) {
       console.log("connection made!");
    });
};

Route.prototype.doSomething = function() {
    console.log('hi');
};

// route.js
module.exports = Route;

现在，如果我要做以下事情：

io.on('connection', function (socket) {
   console.log("connection made!");
});

---

这个很好用！但我想知道，我该如何发送套接字io到我的路线？例如，我有一条名为“游乐场”的路线，我想在该路线内特别使用socket_io。我不知道怎么做！任何帮助都将是伟大的，我希望我描述的足够多

有很多方法可以做到这一点

您可以将

io

作为函数参数传递给路由模块：

app.js

var express = require('express');
var socket_io = require( "socket.io" );

var app = express();

// Socket.io
var io = socket_io();
app.io = io;

var express = require('express');
var socket_io = require( "socket.io" );

var app = express();

// Socket.io
var io = socket_io();

var route = require('./route')(io);

module.exports = function(io) {
    io.on('connection', function (socket) {
       console.log("connection made!");
    });
};

module.exports.init = function(io) {
    io.on('connection', function (socket) {
       console.log("connection made!");
    });
};

var express = require('express');
var socket_io = require( "socket.io" );

var app = express();

// Socket.io
var io = socket_io();

var Route = require('./route');

var r = new Route(io);
r.doSomething();

var Route = function(io) {
    this.io = io;
    io.on('connection', function (socket) {
       console.log("connection made!");
    });
};

Route.prototype.doSomething = function() {
    console.log('hi');
};

// route.js
module.exports = Route;

route.js

var express = require('express');
var socket_io = require( "socket.io" );

var app = express();

// Socket.io
var io = socket_io();
app.io = io;

var express = require('express');
var socket_io = require( "socket.io" );

var app = express();

// Socket.io
var io = socket_io();

var route = require('./route')(io);

module.exports = function(io) {
    io.on('connection', function (socket) {
       console.log("connection made!");
    });
};

module.exports.init = function(io) {
    io.on('connection', function (socket) {
       console.log("connection made!");
    });
};

var express = require('express');
var socket_io = require( "socket.io" );

var app = express();

// Socket.io
var io = socket_io();

var Route = require('./route');

var r = new Route(io);
r.doSomething();

var Route = function(io) {
    this.io = io;
    io.on('connection', function (socket) {
       console.log("connection made!");
    });
};

Route.prototype.doSomething = function() {
    console.log('hi');
};

// route.js
module.exports = Route;

或者您可以导出

init

方法：

route.js

var express = require('express');
var socket_io = require( "socket.io" );

var app = express();

// Socket.io
var io = socket_io();
app.io = io;

var express = require('express');
var socket_io = require( "socket.io" );

var app = express();

// Socket.io
var io = socket_io();

var route = require('./route')(io);

module.exports = function(io) {
    io.on('connection', function (socket) {
       console.log("connection made!");
    });
};

module.exports.init = function(io) {
    io.on('connection', function (socket) {
       console.log("connection made!");
    });
};

var express = require('express');
var socket_io = require( "socket.io" );

var app = express();

// Socket.io
var io = socket_io();

var Route = require('./route');

var r = new Route(io);
r.doSomething();

var Route = function(io) {
    this.io = io;
    io.on('connection', function (socket) {
       console.log("connection made!");
    });
};

Route.prototype.doSomething = function() {
    console.log('hi');
};

// route.js
module.exports = Route;

或者，您可以为路线定义构造函数：

app.js

var express = require('express');
var socket_io = require( "socket.io" );

var app = express();

// Socket.io
var io = socket_io();
app.io = io;

var express = require('express');
var socket_io = require( "socket.io" );

var app = express();

// Socket.io
var io = socket_io();

var route = require('./route')(io);

module.exports = function(io) {
    io.on('connection', function (socket) {
       console.log("connection made!");
    });
};

module.exports.init = function(io) {
    io.on('connection', function (socket) {
       console.log("connection made!");
    });
};

var express = require('express');
var socket_io = require( "socket.io" );

var app = express();

// Socket.io
var io = socket_io();

var Route = require('./route');

var r = new Route(io);
r.doSomething();

var Route = function(io) {
    this.io = io;
    io.on('connection', function (socket) {
       console.log("connection made!");
    });
};

Route.prototype.doSomething = function() {
    console.log('hi');
};

// route.js
module.exports = Route;

route.js

var express = require('express');
var socket_io = require( "socket.io" );

var app = express();

// Socket.io
var io = socket_io();
app.io = io;

var express = require('express');
var socket_io = require( "socket.io" );

var app = express();

// Socket.io
var io = socket_io();

var route = require('./route')(io);

module.exports = function(io) {
    io.on('connection', function (socket) {
       console.log("connection made!");
    });
};

module.exports.init = function(io) {
    io.on('connection', function (socket) {
       console.log("connection made!");
    });
};

var express = require('express');
var socket_io = require( "socket.io" );

var app = express();

// Socket.io
var io = socket_io();

var Route = require('./route');

var r = new Route(io);
r.doSomething();

var Route = function(io) {
    this.io = io;
    io.on('connection', function (socket) {
       console.log("connection made!");
    });
};

Route.prototype.doSomething = function() {
    console.log('hi');
};

// route.js
module.exports = Route;

---

你能详细说明你的问题吗？例如，为什么要在正常路由中使用套接字io？（您需要从正常路由或其他方式向socketio客户端发送消息？）。根据您的要求，会有不同的solutions@TanNguyen我想在playway.js页面上使用socket.io，特别是在我使用实时聊天应用程序时。它将位于localhost:8000/playway，我刚刚开始学习socket.io和node，所以据我所知，这可能是错误的。我仍然不确定您为什么需要访问socket\u io（socket io服务器实例本身）。如果您需要访问客户机（连接到socket.io服务器），您可以在尝试传递变量时检查此答案，就像您在第一个示例中遇到的一样，我总是遇到错误“无法调用'IndexOf'未定义的方法”。