node 搭建本地服务器

    const url = require("url");
    const fs = require("fs");
    const http = require("http");
    const path = require("path");
    http.createServer(function (req, res) {
        //资源指向本地文件夹
        let pathname = __dirname + url.parse("/resources"+req.url).pathname;
        if (path.extname(pathname) == "") {
            pathname += "/";
        }
        if (pathname.charAt(pathname.length - 1) == "/") {
            pathname += "index.html";
        }
        fs.exists(pathname, function (exists) {
        if (exists) {
            switch(path.extname(pathname)){
                case ".html":
                    res.writeHead(200, {"Content-Type": "text/html"});
                    break;
                case ".js":
                    res.writeHead(200, {"Content-Type": "text/javascript"});
                    break;
                case ".css":
                    res.writeHead(200, {"Content-Type": "text/css"});
                    break;
                case ".gif":
                    res.writeHead(200, {"Content-Type": "image/gif"});
                    break;
                case ".jpg":
                    res.writeHead(200, {"Content-Type": "image/jpeg"});
                    break;
                case ".png":
                    res.writeHead(200, {"Content-Type": "image/png"});
                    break;
                default:
                    res.writeHead(200, {"Content-Type": "application/octet-stream"});
            }
            fs.readFile(pathname, function (err, data) {
                res.end(data);
            });
        } else {
            res.writeHead(404, {
                "Content-Type": "text/html"
            });
            res.end("<h1>404 Not Found</h1>");
        }
    });
}).listen(3000);
console.log("server is running at http://localhost:3000");

参考： www.jianshu.com/p/15971d243…