第一次用node.js写 第一次玩mangoDB 第一次使用文件 优化空间很大。。谢谢观赏 ：http://callme.cnodejs.net/

js代码：

<pre><code> var http = require(‘http’), db = require(’./config’).db; fs = require(‘fs’); var path = “html/index.html”; http.createServer(function(req, res){ fs.readFile(path, “binary”, function(err, file) { if(err) { res.writeHead(200, {“Content-Type”: “text/plain”}); res.write(path+" Not Found\n"); res.end(); return; } res.writeHead(200, {“content-type”:“text/html;charset=utf8”}); res.write(file, “binary”); showCount(res,1); }); }).listen(80); console.log(“server started at port 80”); function showCount(res,layer){ if (layer>3){ console.log(“DB Init failed”); res.end("<br/>悲剧…计数器初始化失败…</body></html>"); } if (!dbconn){ var dbconn = db.collection(“RequestCount”); console.log(“Connect to ‘RequestCount’”); } dbconn.findOne({name:“counter”}, function (err, data) { if (err) { console.log(“findOne {name:“counter”} failed-> DB try Init…”); dbconn.save({name:“counter”, count:0}, function (err) { if (err) { console.log(“save {name:“counter”, count:1} failed -> DB try Init…”); } console.log(“DB try Init Successed!”); showCount(res, layer + 1); }) } else { if (!data){ console.log(“data is null -> DB try Init…”); dbconn.save({name:“counter”, count:0}, function (err) { if (err) { console.log(“save {name:“counter”, count:1} failed -> DB try Init…”); } console.log(“DB try Init Successed!”); showCount(res, layer + 1); }) } var newcount = data.count + 1; console.log(“Count update to” + newcount); dbconn.update( {name:“counter”}, {$set:{count:newcount}}, function (err) { if (err) { console.log(“DB update failed”); showCount(res, layer + 1); } } ) res.end("<br/>您是获得了第" + newcount + “次请求的围观群众.</body></html>”); } }); } </code></pre>

That‘s all 欢迎拍砖。。。。