node.js三

Node.js 路由

router.js

建立一个名为 router.js 的文件，添加以下内容

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

exports.route = route;

server.js

新建server.js 文件代码如下

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

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

新建index.js，使得路由函数可以被注入到服务器中

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

server.start(router.route);

执行命令

node index.js

查看网页效果

浏览器访问 http://127.0.0.1:8888/，输出结果如下

hello world