设置基本的node.js服务器

Question

我正在尝试设置基本的node.js服务器，但遇到了我无法弄清的错误。 我有4个文件：index.js，server.js，router.js，requestHandlers.js

index.js

var server = require("./server");
var router = require("./router");
var requestHandlers = ("./requestHandlers");

var handle =  {}
handle["/"] = requestHandlers.start;
handle["/start"] = requestHandlers.start;
handle["/upload"] = requestHandlers.upload;

server.start(router.route, handle);

server.js

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

function start(route, handle) {
  function onRequest(request, response) {
    var pathname = url.parse(request.url).pathname;
    console.log("Request for " + pathname + " received"); // 2nd log-- works fine

    route(handle, pathname);

    response.writeHead(200, {'Content-Type': 'text/plain'});
    response.write('Hello World');
    response.end();
  }

  http.createServer(onRequest).listen(8888);
  console.log("Server has started."); //1st log -- works fine

};
exports.start = start;

router.js

function route(handle, pathname) {
    console.log("About to route a request for " + pathname); //3rd log -- works fine
    console.log(handle); // THIS IS THE PROBLEM returns ---> { '/': undefined, '/start': undefined, '/upload': undefined }
    console.log(pathname); //works fine -- returns "/"
    console.log(typeof handle[pathname]); //undefined
    if (typeof handle[pathname] === 'function') {
        handle[pathname](); //never called because above evaluates to undefined
    }
    else {
        console.log("No request handler found for " + pathname);
    }
}

exports.route = route;

requestHandlers.js //代码永远不会到达这里

function start () {
    console.log("Request handler 'start' was called")
}

function upload () {
    console.log("Request handler 'upload' was called")
}

exports.start = start;
exports.upload = upload;

我走了100遍，对它所做的事情充满信心，因此希望我缺少一些小东西。 谢谢！

Answer 1

我认为您不小心忘记了动词（require）。

var requestHandlers = require("./requestHandlers");