Javascript Response.write（）不返回值

我一直在关注nodejs的介绍，但在返回response.write（）时遇到了问题

当我转到domain:8001时，我的server.js代码可以很好地返回“hello world”，但导航到domain:8001/socket.html会返回一个空白屏幕

我已经使用console.log检查了编写“socket在这里”的代码是否正在执行，但我不确定为什么它没有执行任何操作

server.js：

var http = require("http");
var url = require('url');
var fs = require('fs');

var server = http.createServer(function(request, response){
    console.log('Connection');
    var path = url.parse(request.url).pathname;
            console.log(__dirname);
            console.log(path);

    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("socket is here.");
                }
            });
            break;
        default:
            response.writeHead(404);
            response.write("opps this doesn't exist - 404");
            break;
    }

    response.end();
});

server.listen(8001);

var io = require('socket.io').listen(server);

html：（虽然它不应该与其中包含的内容有关）

var socket=io.connect（）；
这是我们的socket.html文件

在等待

fs.readFile（）

完成之前，您将结束响应。试试这个：

var http = require("http");
var url = require('url');
var fs = require('fs');

var server = http.createServer(function(request, response){
    console.log('Connection');
    var path = url.parse(request.url).pathname;
            console.log(__dirname);
            console.log(path);

    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("socket is here.");
                }
                response.end();
            });
            return;
        default:
            response.writeHead(404);
            response.write("opps this doesn't exist - 404");
            break;
    }

    response.end();
});

server.listen(8001);

var io = require('socket.io').listen(server);

---

另外，执行

fs.readFile（uuu dirname+path，…）

具有潜在的危险性，因为有人可能发送类似于

/../../../../../../../../etc/passwd

的请求。相反，您应该使用

path

模块将

\uuu dirname+path

解析/规范化为绝对路径，然后确保绝对路径以公共目录的绝对路径开始。

您是否尝试过使用不尝试加载脚本的页面？浏览器在脚本加载时停止解析页面，如果存在问题，可以解释空白页。我尝试了没有脚本的SoCKET.HTML，但它似乎给了我同样的问题。

var http = require("http");
var url = require('url');
var fs = require('fs');

var server = http.createServer(function(request, response){
    console.log('Connection');
    var path = url.parse(request.url).pathname;
            console.log(__dirname);
            console.log(path);

    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("socket is here.");
                }
                response.end();
            });
            return;
        default:
            response.writeHead(404);
            response.write("opps this doesn't exist - 404");
            break;
    }

    response.end();
});

server.listen(8001);

var io = require('socket.io').listen(server);