如何查看socket.html的输出? [英] How to see the output of socket.html?
问题描述
我是 node.js 的新手.我正在尝试实施 danielnill 示例 教程
i am newbie to node.js. I was trying to implement danielnill example tutorial
server.js
var http = require("http");
var url = require('url');
var fs = require('fs');
var io = require('socket.io');
var server = http.createServer(function(request, response){
console.log('Connection');
var path = url.parse(request.url).pathname;
switch(path){
case '/':
response.writeHead(200, {'Content-Type': 'text/html'});
response.write('hello world');
break;
case 'socket.html':
fs.readFile(__dirname + path, function(error, data){
if (error){
response.writeHead(404);
response.write("opps this doesn't exist - 404");
}
else{
response.writeHead(200, {"Content-Type": "text/html"});
response.write(data, "utf8");
}
});
break;
default:
response.writeHead(404);
response.write("opps this doesn't exist - 404");
break;
}
response.end();
});
server.listen(8001);
io.listen(server);
socket.html
<html>
<head>
<script src="/socket.io/socket.io.js"></script>
</head>
<body>
<script>
var socket = io.connect();
</script>
<div>This is our socket.html file</div>
</body>
</html>
当我尝试从浏览器运行这个 http://localhost:8001/socket.html url 时.它转到默认情况，而不是转到socket.html"情况.
when ever i am trying run this http://localhost:8001/socket.html url from browser. Its goes to default case instead going to 'socket.html' case.
请帮我在这个例子中执行 'socket.html' 案例.
Pls help me to execute 'socket.html' case in this example.
推荐答案
您发布的内容有两个问题:
There are two issues with what you have posted:
path变量等于/socket.html当 URLhttp://localhost:8001/socket.html为请求，而不是socket.html;您需要相应地更新 case 语句.
The
pathvariable equals/socket.htmlwhen the URLhttp://localhost:8001/socket.htmlis requested, notsocket.html; you need to update the case statement accordingly.
fs.readFile 回调将无法将响应写回客户端(浏览器)，因为 response.end(); 将已经被调用；您需要将 response.end() 移动到每个 case 语句中.
The fs.readFile callback will not be able to write the response to back to the client (browser), as response.end(); will have already been called; you need to move response.end() into each of the case statements.
这是更新的代码:
var http = require("http");
var url = require('url');
var fs = require('fs');
var io = require('socket.io');
var server = http.createServer(function(request, response){
console.log('Connection');
var path = url.parse(request.url).pathname;
switch(path){
case '/':
response.writeHead(200, {'Content-Type': 'text/html'});
response.write('hello world');
response.end();
break;
case '/socket.html':
fs.readFile(__dirname + path, function(error, data){
if (error){
response.writeHead(404);
response.write("opps this doesn't exist - 404");
}
else{
response.writeHead(200, {"Content-Type": "text/html"});
response.write(data, "utf8");
}
response.end();
});
break;
default:
response.writeHead(404);
response.write("opps this doesn't exist - 404");
response.end();
break;
}
});
server.listen(8001);
io.listen(server);
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