Question

我正在创建简单的node.js应用程序，以下是创建的4个文件。 File1：index.js

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

var handle = {}
handle["/"] = requestHandlers.start;
handle["/start"] = requestHandlers.start;
handle["/upload"] = requestHandlers.upload;
server.start(router.route , handle);

FILE2：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 + "recieved");

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

        var content = route(handle, pathname)
        console.log("Contents Is" + content);

        response.write("Content is " +content);
        response.end();
    }

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

exports.start = start;

文件3：ROUTER.JS

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

    if (typeof handle[pathname] === 'function')
    {
       return handle[pathname]();
    }
    else
    {
        console.log("No Request handler found for "+ pathname);
        return "404 Not Found";
    }
}

exports.route = route;

文件4：requestHandlers.js

function start()
{
    console.log("Request handler 'start' was called ");
    return "Hello Start";
}

function upload()
{
    console.log("Request handler 'upload' was called");
    return "Hello Upload";
}


//This allows us to wire the request handlers into the router, giving our router something to route to
exports.start = start;
exports.upload = upload;

现在，当我在终端上启动index.js并在我的浏览器上请求http://localhost:8888/start时，输出为：

$ node index.js
server has started
request for/recieved
About to route a request for/
Request handler 'start' was called 
Contents Isundefined

所以在server.js行// var content = route（handle，pathname）没有返回正确的值＆＃34; Hello Start＆＃34; 。我刚刚开始倾斜，任何人都能说出什么问题？

我在node.js中为请求获取未定义的响应

0 个答案: