node.js 搭载的一个服务器，局域网内，都可以访问

var

http = require(‘http’),

url = require(‘url’),

path = require(‘path’),

fs = require(‘fs’),

os = require(‘os’);

function getIPv4(){

var interfaces = os.networkInterfaces();//获取网络接口列表

var ipv4s = [];//同一接口可能有不止一个IP4v地址，所以用数组存

Object.keys(interfaces).forEach(function (key){
interfaces[key].forEach(function (item){

//跳过IPv6 和 '127.0.0.1'
if ( 'IPv4' !== item.family || item.internal !== false )return;

ipv4s.push(item.address);//可用的ipv4s加入数组
console.log(key+'--'+item.address);
})
})

return ipv4s[0];//返回一个可用的即可

}

var mime = {

“html”: “text/html”,

“htm”: “text/html”,

“css”: “text/css”,

“js”: “text/javascript”,

“xml”: “text/xml”,

“json”: “application/json”,

"jpg": "image/jpeg",
"jpeg": "image/jpeg",
"png": "image/png",
"gif": "image/gif",
"bmp": "image/bmp",
"svg": "image/svg+xml",
"ico": "image/x-icon",

"mp3": "audio/mpeg",
"wav": "audio/x-wav",
"mp4": "video/mp4",
"swf": "application/x-shockwave-flash",

"woff": "application/x-font-woff"

}

var server = http.createServer(function (req,res){

var pathname = url.parse(req.url).pathname;;
var filename = 'D:/WebStorm_WorkPace/potted_plant'+pathname;
var extname = path.extname(filename);

//扩展名含点号如'.html',截掉
extname = extname ? extname.slice(1) : 'unknown';
//映射表中查找请求的资源的MIME类型并返回，没有映射均返回'text/plain'类型
var resContentType = mime[extname] || 'text/plain';

fs.exists(filename,function (exists){
if (!exists){
//文件不存在返回404
res.writeHead(404,{'Content-Type':'text/plain'});
res.write('404 Not Found');
res.end();
}else {
//文件存在读取并返回
fs.readFile(filename,function (err,data){
if (err){
res.writeHead(500,{'Content-Type':'text/plain'});
res.end(err);
}else{
res.writeHead(200,{'Content-Type':resContentType});
res.write(data);
res.end();
}
})
}
})

});

server.listen(‘8080’,function (){

console.log(‘server start on: ‘+getIPv4()+’:8080’);

})