我得到一个 fs.js:347 throw new TypeError('Bad arguments');

Question

我试图按照有关使用 Node.js 创建路由器的教程进行操作。这是路由器的代码..

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;

    switch(path){
        case '/':
            response.writeHead(200, {'Content-Type': 'text/html'});
            response.write('hello world');
            break;
        case '/socket.html':
            fs.readFileSync(__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);

当我访问 http://localhost:8001/socket.html 时，我的浏览器出现空白屏幕，我的终端显示

Connection
fs.js:347
throw new TypeError('Bad arguments');
      ^
TypeError: Bad arguments
    at Object.fs.readFileSync (fs.js:347:11)
    at Server.<anonymous> (/Users/Vik/Desktop/NodeJS/routingToDifferentUrls.js:15:20)
at Server.emit (events.js:110:17)
at HTTPParser.parserOnIncoming [as onIncoming] (_http_server.js:491:12)
at HTTPParser.parserOnHeadersComplete (_http_common.js:111:23)
at Socket.socketOnData (_http_server.js:343:22)
at Socket.emit (events.js:107:17)
at readableAddChunk (_stream_readable.js:163:16)
at Socket.Readable.push (_stream_readable.js:126:10)
at TCP.onread (net.js:529:20)

然后退出。

谁能解释一下为什么我会收到这个错误？？？是的，我已经创建了我的 socket.html 文件，它只显示简单的文本 "this is our socket.html file."

非常感谢您的帮助！

Answer 1

好吧，看起来您正在使用异步的 fs.readFile。所以 response.end() 在 finishes.hence 你的错误消息 write after end 之前被调用。你真的想使用 fs.readFileSync 来获取 socket.html 的内容。喜欢 var data = fs.readFileSync.(__dirname + path)

我得到一个 fs.js:347 throw new TypeError('Bad arguments');

I'm getting a fs.js:347 throw new TypeError('Bad arguments');

javascript

node.js

sockets

web

web-development-server