介绍： 基于node的文件服务器,方便从电脑传文件到其他设备
获取二维码生成工具
npm install --save qrcode
将QRCode.js放到项目目录并删掉其他文件
"use strict";
//加载所需要的模块
var http = require('http');
var url = require('url');
var fs = require('fs');
var path = require('path');
var cp = require('child_process');
var dirname="E:/Downloads/toMobile/";
var ip, ifaces=require('os').networkInterfaces();
for (var dev in ifaces) {
ifaces[dev].forEach(function(details,alias){
if (details.family=='IPv4'&& details.address !== '127.0.0.1' && !details.internal) {
// iptable[dev+(alias?':'+alias:'')]=details.address;
ip=details.address;
}
});
}
//创建服务
var httpServer = http.createServer(processRequest);
var port = 9090;
var rootUrl='http://'+ip+':'+port+'/';
//指定一个监听的接口
httpServer.listen(port, function() {
console.log(`app is running at port:${port}`);
console.log(`url: http://localhost:${port}`);
cp.exec(`explorer http://localhost:${port}`, function () {
});
});
//响应请求的函数
function processRequest (request, response) {
//mime类型
var mime = {
"css": "text/css",
"gif": "image/gif",
"html": "text/html",
"ico": "image/x-icon",
"jpeg": "image/jpeg",
"jpg": "image/jpeg",
"js": "text/javascript",
"json": "application/json",
"pdf": "application/pdf",
"png": "image/png",
"svg": "image/svg+xml",
"swf": "application/x-shockwave-flash",
"tiff": "image/tiff",
"txt": "text/plain",
"wav": "audio/x-wav",
"wma": "audio/x-ms-wma",
"wmv": "video/x-ms-wmv",
"xml": "text/xml"
};
//request里面切出标识符字符串
var requestUrl = request.url;
//url模块的parse方法 接受一个字符串，返回一个url对象,切出来路径
var pathName = url.parse(requestUrl).pathname;
//对路径解码，防止中文乱码
var pathName = decodeURI(pathName);
//解决301重定向问题，如果pathname没以/结尾，并且没有扩展名
if (!pathName.endsWith('/') && path.extname(pathName) === '') {
pathName += '/';
var redirect = "http://" + request.headers.host + pathName;
response.writeHead(301, {
location: redirect
});
//response.end方法用来回应完成后关闭本次对话，也可以写入HTTP回应的具体内容。
response.end();
}
//获取资源文件的绝对路径
// var filePath = path.resolve(__dirname + pathName);
var filePath = path.resolve(dirname + pathName);
if(pathName=='/QRCode.js'){
filePath = path.resolve(__dirname + pathName);
}
console.log(filePath);
//获取对应文件的文档类型
//我们通过path.extname来获取文件的后缀名。由于extname返回值包含”.”，所以通过slice方法来剔除掉”.”，
//对于没有后缀名的文件，我们一律认为是unknown。
var ext = path.extname(pathName);
ext = ext ? ext.slice(1) : 'unknown';
//未知的类型一律用"text/plain"类型
var contentType = mime[ext] || "text/plain";
fs.stat(filePath, (err, stats) => {
if (err) {
response.writeHead(404, { "content-type": "text/html" });
response.end("<h1>404 Not Found</h1>");
}
//没出错 并且文件存在
if (!err && stats.isFile()) {
readFile(filePath, contentType);
}
//如果路径是目录
if (!err && stats.isDirectory()) {
var html = `<head>
<meta charset = 'utf-8'/>
<script src='./QRCode.js'></script>
</head>
<body>
<div style='position:fixed;bottom:40%;right:20%;'>
<div id='qrcode' >
</div>
<div id='qrcodeStr' ></div>
</div>
<ul>`;
//读取该路径下文件
fs.readdir(filePath, (err, files) => {
if (err) {
console.log("读取路径失败！");
} else {
//做成一个链接表，方便用户访问
var flag = false;
for (var file of files) {
//如果在目录下找到index.html，直接读取这个文件
if (file === "index.html") {
readFile(filePath + (filePath[filePath.length-1]=='/' ? '' : '/') + 'index.html', "text/html");
flag = true;
break;
};
html += `<li onmouseover='rendCode("${file}")' onmouseout='rendCode()'><a href='${file}'>${file}</a></li>`;
}
if(!flag) {
html += `</ul>
<script>
var qrcode = new QRCode(document.getElementById('qrcode'), { width : 200, height : 200 });
var qrcodeStr = document.getElementById('qrcodeStr');
var rendCode=function(url){
console.log('${rootUrl}'+(url||""));
qrcode.makeCode('${rootUrl}'+(url||""));
qrcodeStr.innerHTML=(url||"${rootUrl}");
}
rendCode();
</script>
</body>`;
response.writeHead(200, { "content-type": "text/html" });
response.end(html);
}
}
});
}
//读取文件的函数
function readFile(filePath, contentType){
response.writeHead(200, { "content-type": contentType });
//建立流对象，读文件
var stream = fs.createReadStream(filePath);
//错误处理
stream.on('error', function() {
response.writeHead(500, { "content-type": contentType });
response.end("<h1>500 Server Error</h1>");
});
//读取文件
stream.pipe(response);
}
});
}
node fileServer.js