Build File Server With NodeJS

mime.js

//mime.js



var mime = {



  //查找文件后缀类型

  lookupExtension : function(ext, fallback) {

    return mime.TYPES[ext.toLowerCase()] || fallback || 'text/plain';

  },



  //文件类型

  TYPES : { ".3gp"   : "video/3gpp"

          , ".a"     : "application/octet-stream"

          , ".ai"    : "application/postscript"

          , ".aif"   : "audio/x-aiff"

          , ".aiff"  : "audio/x-aiff"

          , ".asc"   : "application/pgp-signature"

          , ".asf"   : "video/x-ms-asf"

          , ".asm"   : "text/x-asm"

          , ".asx"   : "video/x-ms-asf"

          , ".atom"  : "application/atom+xml"

          , ".au"    : "audio/basic"

          , ".avi"   : "video/x-msvideo"

          , ".bat"   : "application/x-msdownload"

          , ".bin"   : "application/octet-stream"

          , ".bmp"   : "image/bmp"

          , ".bz2"   : "application/x-bzip2"

          , ".c"     : "text/x-c"

          , ".cab"   : "application/vnd.ms-cab-compressed"

          , ".cc"    : "text/x-c"

          , ".chm"   : "application/vnd.ms-htmlhelp"

          , ".class"   : "application/octet-stream"

          , ".com"   : "application/x-msdownload"

          , ".conf"  : "text/plain"

          , ".cpp"   : "text/x-c"

          , ".crt"   : "application/x-x509-ca-cert"

          , ".css"   : "text/css"

          , ".csv"   : "text/csv"

          , ".cxx"   : "text/x-c"

          , ".deb"   : "application/x-debian-package"

          , ".der"   : "application/x-x509-ca-cert"

          , ".diff"  : "text/x-diff"

          , ".djv"   : "image/vnd.djvu"

          , ".djvu"  : "image/vnd.djvu"

          , ".dll"   : "application/x-msdownload"

          , ".dmg"   : "application/octet-stream"

          , ".doc"   : "application/msword"

          , ".dot"   : "application/msword"

          , ".dtd"   : "application/xml-dtd"

          , ".dvi"   : "application/x-dvi"

          , ".ear"   : "application/java-archive"

          , ".eml"   : "message/rfc822"

          , ".eps"   : "application/postscript"

          , ".exe"   : "application/x-msdownload"

          , ".f"     : "text/x-fortran"

          , ".f77"   : "text/x-fortran"

          , ".f90"   : "text/x-fortran"

          , ".flv"   : "video/x-flv"

          , ".for"   : "text/x-fortran"

          , ".gem"   : "application/octet-stream"

          , ".gemspec" : "text/x-script.ruby"

          , ".gif"   : "image/gif"

          , ".gz"    : "application/x-gzip"

          , ".h"     : "text/x-c"

          , ".hh"    : "text/x-c"

          , ".htm"   : "text/html"

          , ".html"  : "text/html"

          , ".ico"   : "image/vnd.microsoft.icon"

          , ".ics"   : "text/calendar"

          , ".ifb"   : "text/calendar"

          , ".iso"   : "application/octet-stream"

          , ".jar"   : "application/java-archive"

          , ".java"  : "text/x-java-source"

          , ".jnlp"  : "application/x-java-jnlp-file"

          , ".jpeg"  : "image/jpeg"

          , ".jpg"   : "image/jpeg"

          , ".js"    : "application/javascript;charset=utf-8"

          , ".json"  : "application/json"

          , ".log"   : "text/plain;charset=utf-8"

          , ".m3u"   : "audio/x-mpegurl"

          , ".m4v"   : "video/mp4"

          , ".man"   : "text/troff"

          , ".mathml"  : "application/mathml+xml"

          , ".mbox"  : "application/mbox"

          , ".mdoc"  : "text/troff"

          , ".me"    : "text/troff"

          , ".mid"   : "audio/midi"

          , ".midi"  : "audio/midi"

          , ".mime"  : "message/rfc822"

          , ".mml"   : "application/mathml+xml"

          , ".mng"   : "video/x-mng"

          , ".mov"   : "video/quicktime"

          , ".mp3"   : "audio/mpeg"

          , ".mp4"   : "video/mp4"

          , ".mp4v"  : "video/mp4"

          , ".mpeg"  : "video/mpeg"

          , ".mpg"   : "video/mpeg"

          , ".ms"    : "text/troff"

          , ".msi"   : "application/x-msdownload"

          , ".odp"   : "application/vnd.oasis.opendocument.presentation"

          , ".ods"   : "application/vnd.oasis.opendocument.spreadsheet"

          , ".odt"   : "application/vnd.oasis.opendocument.text"

          , ".ogg"   : "application/ogg"

          , ".p"     : "text/x-pascal"

          , ".pas"   : "text/x-pascal"

          , ".pbm"   : "image/x-portable-bitmap"

          , ".pdf"   : "application/pdf"

          , ".pem"   : "application/x-x509-ca-cert"

          , ".pgm"   : "image/x-portable-graymap"

          , ".pgp"   : "application/pgp-encrypted"

          , ".pkg"   : "application/octet-stream"

          , ".pl"    : "text/x-script.perl"

          , ".pm"    : "text/x-script.perl-module"

          , ".png"   : "image/png"

          , ".pnm"   : "image/x-portable-anymap"

          , ".ppm"   : "image/x-portable-pixmap"

          , ".pps"   : "application/vnd.ms-powerpoint"

          , ".ppt"   : "application/vnd.ms-powerpoint"

          , ".ps"    : "application/postscript"

          , ".psd"   : "image/vnd.adobe.photoshop"

          , ".py"    : "text/x-script.python"

          , ".qt"    : "video/quicktime"

          , ".ra"    : "audio/x-pn-realaudio"

          , ".rake"  : "text/x-script.ruby"

          , ".ram"   : "audio/x-pn-realaudio"

          , ".rar"   : "application/x-rar-compressed"

          , ".rb"    : "text/x-script.ruby"

          , ".rdf"   : "application/rdf+xml"

          , ".roff"  : "text/troff"

          , ".rpm"   : "application/x-redhat-package-manager"

          , ".rss"   : "application/rss+xml"

          , ".rtf"   : "application/rtf"

          , ".ru"    : "text/x-script.ruby"

          , ".s"     : "text/x-asm"

          , ".sgm"   : "text/sgml"

          , ".sgml"  : "text/sgml"

          , ".sh"    : "application/x-sh"

          , ".sig"   : "application/pgp-signature"

          , ".snd"   : "audio/basic"

          , ".so"    : "application/octet-stream"

          , ".svg"   : "image/svg+xml"

          , ".svgz"  : "image/svg+xml"

          , ".swf"   : "application/x-shockwave-flash"

          , ".t"     : "text/troff"

          , ".tar"   : "application/x-tar"

          , ".tbz"   : "application/x-bzip-compressed-tar"

          , ".tcl"   : "application/x-tcl"

          , ".tex"   : "application/x-tex"

          , ".texi"  : "application/x-texinfo"

          , ".texinfo" : "application/x-texinfo"

          , ".text"  : "text/plain"

          , ".tif"   : "image/tiff"

          , ".tiff"  : "image/tiff"

          , ".torrent" : "application/x-bittorrent"

          , ".tr"    : "text/troff"

          , ".txt"   : "text/plain"

          , ".vcf"   : "text/x-vcard"

          , ".vcs"   : "text/x-vcalendar"

          , ".vrml"  : "model/vrml"

          , ".war"   : "application/java-archive"

          , ".wav"   : "audio/x-wav"

          , ".wma"   : "audio/x-ms-wma"

          , ".wmv"   : "video/x-ms-wmv"

          , ".wmx"   : "video/x-ms-wmx"

          , ".wrl"   : "model/vrml"

          , ".wsdl"  : "application/wsdl+xml"

          , ".xbm"   : "image/x-xbitmap"

          , ".xhtml"   : "application/xhtml+xml"

          , ".xls"   : "application/vnd.ms-excel"

          , ".xml"   : "application/xml"

          , ".xpm"   : "image/x-xpixmap"

          , ".xsl"   : "application/xml"

          , ".xslt"  : "application/xslt+xml"

          , ".yaml"  : "text/yaml"

          , ".yml"   : "text/yaml"

          , ".zip"   : "application/zip"

          }

};



exports.mime=mime;

fileserver.js

//fileserver.js



/***

 * @author nickchung

 * @date 2015-03-04

 * 一个基于Node.js的简单文件服务器

 */



var fs=require("fs"),

    http=require("http"),

    url=require("url"),

    path=require("path"),

    mime=require("./mime").mime,

    util=require('util');



//www根目录

var root=__dirname+'/www',

    host="192.168.0.106",

    port="8080";

    

    

if(!fs.existsSync(root)){

    util.error(root+"文件夹不存在，请重新制定根文件夹！");

    process.exit();

}

    

//显示文件夹下面的文件

function listDirectory(parentDirectory,req,res){

    fs.readdir(parentDirectory,function(error,files){

        var body=formatBody(parentDirectory,files);

        res.writeHead(200,{

            "Content-Type":"text/html;charset=utf-8",

            "Content-Length":Buffer.byteLength(body,'utf8'),

            "Server":"NodeJs("+process.version+")"

        });

        res.write(body,'utf8');

        res.end();

    });



}



//显示文件内容

function showFile(file,req,res){

    fs.readFile(filename,'binary',function(err,file){

        var contentType=mime.lookupExtension(path.extname(filename));

        res.writeHead(200,{

            "Content-Type":contentType,

            "Content-Length":Buffer.byteLength(file,'binary'),

            "Server":"NodeJs("+process.version+")"

        });

        res.write(file,"binary");

        res.end();

    })

}



//在Web页面上显示文件列表，格式为<ul><li></li><li></li></ul>

function formatBody(parent,files){

    var res=[],

        length=files.length;

    res.push("<!doctype>");

    res.push("<html>");

    res.push("<head>");

    res.push("<meta http-equiv='Content-Type' content='text/html;charset=utf-8'></meta>")

    res.push("<title>Node.js文件服务器</title>");

    res.push("</head>");

    res.push("<body width='100%'>");

    res.push("<ul>")

    files.forEach(function(val,index){

        var stat=fs.statSync(path.join(parent,val));

        if(stat.isDirectory(val)){

            val=path.basename(val)+"/";

        }else{

            val=path.basename(val);

        }

        res.push("<li><a href='"+val+"'>"+val+"</a></li>");

    });

    res.push("</ul>");

    res.push("<div style='position:relative;width:98%;bottom:5px;height:25px;background:gray'>");

    res.push("<div style='margin:0 auto;height:100%;line-height:25px;text-align:center'>Powered By Node.js</div>");

    res.push("</div>")

    res.push("</body>");

    return res.join("");

}



//如果文件找不到，显示404错误

function write404(req,res){

    var body="文件不存在:-(";

    res.writeHead(404,{

        "Content-Type":"text/html;charset=utf-8",

        "Content-Length":Buffer.byteLength(body,'utf8'),

        "Server":"NodeJs("+process.version+")"

    });

    res.write(body);

    res.end();

}



//创建服务器

http.createServer(function(req,res){

    //将url地址的中的%20替换为空格，不然Node.js找不到文件

    var pathname=url.parse(req.url).pathname.replace(/%20/g,' '),

        re=/(%[0-9A-Fa-f]{2}){3}/g;

    //能够正确显示中文，将三字节的字符转换为utf-8编码

    pathname=pathname.replace(re,function(word){

        var buffer=new Buffer(3),

            array=word.split('%');

        array.splice(0,1);

        array.forEach(function(val,index){

            buffer[index]=parseInt('0x'+val,16);

        });

        return buffer.toString('utf8');

    });

    if(pathname=='/'){

        listDirectory(root,req,res);

    }else{

        filename=path.join(root,pathname);

        fs.exists(filename,function(exists){

            if(!exists){

                util.error('找不到文件'+filename);

                write404(req,res);

            }else{

                fs.stat(filename,function(err,stat){

                    if(stat.isFile()){

                        showFile(filename,req,res);

                    }else if(stat.isDirectory()){

                        listDirectory(filename,req,res);

                    }

                });

            }

        });

    }

    

    

}).listen(port,host);

util.log("file server run at http://"+host+":"+port);