var http = require('http');

var path = require('path');

var fs = require('fs');

var url = require('url');

var server = http.createServer((req, res) => {

  var staticPath = path.join(__dirname, '');

  var pathObj = url.parse(req.url, true);

  if (pathObj.pathname == '/') pathObj.pathname += 'index.html';

  var filePath = path.join(staticPath, pathObj.pathname);

  // 异步读取文件数据

  fs.readFile(filePath, 'binary', (err, fileContent) => {

    if (err) {

      res.writeHead(404, 'Not Found');

      res.end('<h1>404 Not Found</h1>');

    } else {

      res.writeHead(200, 'ok');

      res.write(fileContent, 'binary');

      res.end();

    }

  })

})

server.listen(8012);

console.log('server is ok!')