node.js - 错误: Cannot GET/

Question

我在c9.io ide环境中工作，我在server.js文件中编写了以下代码

var http = require('http');
var path = require('path');

var async = require('async');
var socketio = require('socket.io');
var express = require('express');

var express = require('express');
var app = express();

var router = express();
var server = http.createServer(router);

server.listen(process.env.PORT || 3000, process.env.IP || "0.0.0.0", function(){
  var addr = server.address();
  console.log("Server listening at", addr.address + ":" + addr.port);
});

app.use(express.static(__dirname + '/client'));

// respond with "hello world" when a GET request is made to the homepage
app.get('/', function(req, res) {
  res.render('index.html');
});

app.get('/about', function (req, res) {
  res.send('about');
});

在终端中运行 node server.js 后，消息显示为

Your code is running at https://nodejs2-mujaffar.c9.io.
Important: use process.env.PORT as the port and process.env.IP as the host in your scripts!

Server listening at 0.0.0.0:8080

但是访问 https://nodejs2-mujaffar.c9.io/ 后url -- 它不是渲染 View ，仅显示消息错误:无法获取/

我做错了什么？

请帮忙。

Answer 1

您似乎创建了两个 Express 实例，这可能是您的问题。

尝试改变:

var express = require('express');
var app = express();

var router = express();
var server = http.createServer(router);

至:

var express = require('express');
var app = express();

var server = http.createServer(app);

目前，您的express app 变量尚未绑定(bind)到您的http 服务器。相反，您已经限制了一个名为 router 的未使用实例。但随后您已将路由注册到 app 变量。