如何使用nodejs实现路由功能

功能

【router.js】

// 加载所需模块
var http = require(&＃39;http&＃39;);
var url = require(&＃39;url&＃39;);
var fs = require(&＃39;fs&＃39;);

var host = &＃39;127.0.0.1&＃39;;
var port = 8080;

http.createServer(function(req,res){
    var pathname = url.parse(req.url).pathname;
    console.log(&＃39;Request for &＃39; + pathname + &＃39; received.&＃39;);
        function showPaper(path,status){
            var cOntent= fs.readFileSync(path);
            res.writeHead(status, { &＃39;Content-Type&＃39;: &＃39;text/html;charset=utf-8&＃39; });
            res.write(content);
            res.end();
        }
        switch(pathname){
        //&＃39;首页&＃39;
        case &＃39;/&＃39;:
        case &＃39;/home&＃39;:
            showPaper(&＃39;./view/home.html&＃39;,200);
            break;
        //&＃39;about页&＃39;
        case &＃39;/about&＃39;:
            showPaper(&＃39;./view/about.html&＃39;,200);   
            break;
        //&＃39;404页&＃39;
        default:
            showPaper(&＃39;./view/404.html&＃39;,404);
            break;                            
    }    
}).listen(port, host);

【404.html】

    
    


404    

【about.html】

    
    


about    

【home.html】

    
    


home    

演示

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