javascript - 路由器未定义 Node.js

Question

我是 Node.js 的新手，我正在尝试创建一个 HTTP 服务器，但出于某种原因，当我尝试将路由器用于购买 URL 请求时，它不起作用。

我的代码:

Server.js

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


function start() {
function onRequest(request, response) { 
    var pathname = url.parse(request.url).pathname; 
    console.log("Request received.");       

    route(pathname);

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

http.createServer(onRequest).listen(8888);
console.log("Server has started;");
}

exports.start = start;

Index.js

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

server.start(router.route);

Router.js

function route(pathname) {
    console.log("About to route a request for " + pathname);
}

exports.route = route;

尝试通过 Node.js 启动服务器时，出现以下错误:

route is not defined

route(pathname);

我怎样才能使这个工作？

Answer 1

您正在将 route 传递给 start 函数，但未定义参数，您需要添加一个。

function start(route) {
    function onRequest(request, response) {
        var pathname = url.parse(request.url).pathname;
        console.log("Request received.");

        route(pathname);

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

    http.createServer(onRequest).listen(8888);
    console.log("Server has started;");
}