node.js -- 完整的 WebServer

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程式：WebServerAsync.js

var path = require('path');
var fs = require("fs");
var qs = require('querystring');
var express = require("express");
var app = express();

var mimeType = {
   "jpg":"image/jpeg", 
   "gif":"image/gif", 
   "png":"image/png", 
   "svg":"image/svg",
   "zip":"application/zip", 
   "pdf":"application/pdf", 
   "xls":"application/vnd.ms-excel", 
   "ppt":"application/vnd.ms-powerpoint", 
   "doc":"application/msword", 
   "htm":"text/html", 
   "html":"text/html"
};

function getMimeType(ext) {
    var type = mimeType[ext];
    if (!type)
        return "text/plain";
    else
        return type;
}

app.listen(80);

var response = function(res, type, data) {
    res.writeHead(200, {'Content-Type': type});
    if (type.indexOf("text/")>=0)
        res.end(data);
    else
        res.end(data, "binary");
}

app.get('*', function(req, res){
  try {
    console.log("url="+req.url);
    var path = '.' + req.url;
    fs.stat(path, function(err, pathStat) {
        if (err) {
            response(res, "text/plain", err.toString());
            return;
        }
        if (pathStat.isFile()) {
            fs.readFile(path, function(err, file) {
                var tokens = path.split(".");
                var ext = tokens[tokens.length-1];
                response(res, getMimeType(ext), file);
            });
        } else if (pathStat.isDirectory()) {
            var dirPath = req.url;
            if (dirPath.substring(-1)!=="/") 
                dirPath = dirPath+"/";
            var html = "<html><body><h1>"+req.url+"</h1>\n";
            fs.readdir(path, function(err, files) {
                for (f in files) {
                    fname = files[f];
                    filePath = dirPath+fname;
                    html += "<li><a href='"+filePath+"'>"+fname+"</a></li>\n";
                }
                html += "<body></html>";
                response(res, "text/html", html);
            });
        } 
    });    
  } catch (err) {
    response(res, "text/plain", err.toString());
  }
});

console.log('start WebServer\n');

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page revision: 3, last edited: 11 Aug 2012 09:58

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程式：WebServerAsync.js

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