node.js如何集成到html页面,如何用nodejs打开项目中的html文件？

var http = require("http"),

url = require("url"),

path = require("path"),

fs = require("fs");

http.createServer(function (req, res) {

var pathname=__dirname+url.parse(req.url).pathname;

if (path.extname(pathname)=="") {

pathname+="/";

}

if (pathname.charAt(pathname.length-1)=="/"){

pathname+="index.html";

}

path.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("

404 Not Found

");

}

});

}).listen(8080, "127.0.0.1");

console.log("Server running at http://127.0.0.1:8080/");