nodejs使用（2）一个文件服务器

vincen

注意nodejs现在还不是稳定版本，api命名会不停变化，如writeHead，以前就叫作sendHeader...
process.cwd()服务器当前进程路径
测试，访问：http://localhost:8080/fileserver.js
可以看到浏览器把内容输出

fileserver.js

var sys = require("sys"),  
http = require("http"),  
url = require("url"),  
path = require("path"),  
fs = require("fs");  
http.createServer(function(request, response) {  
var uri = url.parse(request.url).pathname;  
var filename = path.join(process.cwd(), uri);  
sys.puts(filename)
path.exists(filename, function(exists) {  
if(!exists) {  
response.writeHead(404, {"Content-Type": "text/plain"});  
response.write("404 Not Found\n");  
response.end();  
return;  
}  
fs.readFile(filename, "binary", function(err, file) {  
if(err) {  
response.writeHead(500, {"Content-Type": "text/plain"});  
response.write(err + "\n");  
response.end();  
return;  
}  
response.writeHead(200);  
response.write(file, "binary");  
response.end();  
});  
});  
}).listen(8080);  
sys.puts("Server running at http://localhost:8080/")

从中学习：
1，引入包
require(module)
2,request, response对象：
This object is created internally by a HTTP server--not by the user--and passed as  argument to listener.
....
直接查看API文档吧:)说得相当直接