http server set up

. 1 const = the require HTTP ( 'HTTP' );
 2 const the require FS = ( 'FS' );
 . 3 const = path the require ( 'path' );
 . 4 const = the require URL ( 'URL' );
 . 5  
. 6  // . 1. create a server 
. 7 http.createServer ((REQ, RES) => {
 . 8      // 1.1 to acquired path url 
. 9      the let pathUrl = url.parse (req.url);
 10      the let pathName = pathUrl.pathname;
 . 11      // the console.log (pathName); 
12 is  
13 is      // 1.2 suffix extraction 
14      IF {(pathName.lastIndexOf () === -1 '.')// No 
15         pathName + = '/index.html' ;
 16      }
 . 17  
18 is      // 1.3 suffix processing 
. 19      the let fileURL = path.join (__ dirname, pathName);
 20 is      // the console.log (fileURL); 
21 is  
22 is      / / take suffix 
23 is      the let extname = path.extname (fileURL);
 24  
25      // 1.4 read the file 
26 is      fs.readFile (fileURL, (ERR, Data) => {
 27         IF (ERR) { // no pages found 
28             RES .writeHead (404, { 'content- type': 'text / html; charset = utf-8'});
 29             res.end ( '<h1 of> 404, the current page does not exist </ h1 of>!' );
 30         } the else { // find the resource 
31 is             the getContentType (extname, (contentType) => {
 32                 // Console .log (contentType); 
33 is                 res.writeHead (200 is, { 'Content-type' :} contentType);
 34 is                 res.end (Data);
 35             });
 36         }
 37 [      });
 38 is .}) the listen (3000 ) ;
 39  
40  
41 is the let the getContentType = (extname, the callback) => {
 42 is      // 读取文件
43     fs.readFile(path.join(__dirname, 'mime.json'), (err, data)=>{
44         if(err){
45             throw err;
46         }
47         let mineJson = JSON.parse(data);
48         let contentType = mineJson[extName] || 'text/plain';
49         callback && callback(contentType);
50     })
51 };


http://localhost:3000/static/index.html