web开发概述（04）：优化静态资源

优化静态资源

/*
    响应完整的页面信息
    静态资源读取
 */
const http = require('http');
const path = require('path');
const fs = require('fs');
const mime = require('./mime.json');

http.createServer((req,res) =>{
    fs.readFile(path.join(__dirname,'www',req.url),(err,fileContent)=>{
        if(err){
            //没有找到对应文件
            res.writeHead(404,{
                'Content-Type':'text/plain; charset=utf8'
            });
            res.end('页面无响应');
        }else{
            let dtype = 'text/html';
            //获取请求文件的后缀
            let ext = path.extname(req.url);
            if(mime[ext]){
                dtype = mime[ext];
            }
            //如果响应的内容为文本，就设置为utf8编码
            if(dtype.startsWith('text')){
                dtype += '; charset=utf8';
            }

            res.writeHead(200,{
                'Content-type':dtype
            });

            res.end(fileContent);
        }
    });
}).listen(3000,'172.16.10.141',()=>{
    console.log('服务启动……');
});

mime.json

{".123":"application/vnd.lotus-1-2-3",
  ".3dml":"text/vnd.in3d.3dml",
  ".3ds":"image/x-3ds",
  ".3g2":"video/3gpp2",
  ".3gp":"video/3gpp",
  ".7z":"application/x-7z-compressed",
  ".aab":"application/x-authorware-bin",
  ".aac":"audio/x-aac",
  ".aam":"application/x-authorware-map",
  ".aas":"application/x-authorware-seg",
  ".abs":"audio/x-mpeg",
  ".abw":"application/x-abiword",
  ".ac":"application/pkix-attr-cert",
  ".acc":"application/vnd.americandynamics.acc",
  ".ace":"application/x-ace-compressed",
  ".acu":"application/vnd.acucobol",
  ".acutc":"application/vnd.acucorp",
  ".adp":"audio/adpcm",
  ".aep":"application/vnd.audiograph",
  ".afm":"application/x-font-type1",
  ".afp":"application/vnd.ibm.modcap",
  ".ahead":"application/vnd.ahead.space",
  ".ai":"application/postscript",
  ".aif":"audio/x-aiff",
  ".aifc":"audio/x-aiff",
  ".aiff":"audio/x-aiff",
  ".aim":"application/x-aim",
  ".air":"application/vnd.adobe.air-application-installer-package+zip",
  ".ait":"application/vnd.dvb.ait",
  ".ami":"application/vnd.amiga.ami",
  ".anx":"application/annodex",
  ".apk":"application/vnd.android.package-archive",
  ".appcache":"text/cache-manifest",
  ".application":"application/x-ms-application",
  ".apr":"application/vnd.lotus-approach",
  ".arc":"application/x-freearc",
  ".art":"image/x-jg",
  ".asc":"application/pgp-signature",
  ".asf":"video/x-ms-asf",
  ".asm":"text/x-asm",
  ".aso":"application/vnd.accpac.simply.aso",
  ".asx":"video/x-ms-asf",
  ".atc":"application/vnd.acucorp",
  ".atom":"application/atom+xml",
  ".atomcat":"application/atomcat+xml",
  ".atomsvc":"application/atomsvc+xml",
  ".atx":"application/vnd.antix.game-component",
  ".au":"audio/basic",
  ".avi":"video/x-msvideo",
  ".avx":"video/x-rad-screenplay",
  ".aw":"application/applixware",
  ".axa":"audio/annodex",
  ".axv":"video/annodex",
  ".azf":"application/vnd.airzip.filesecure.azf",
  ".azs":"application/vnd.airzip.filesecure.azs",
  ".azw":"application/vnd.amazon.ebook",
  ".bat":"application/x-msdownload",
  ".bcpio":"application/x-bcpio",
  ".bdf":"application/x-font-bdf",
  ".bdm":"application/vnd.syncml.dm+wbxml",
  ".bed":"application/vnd.realvnc.bed",
  ".bh2":"application/vnd.fujitsu.oasysprs",
  ".bin":"application/octet-stream",
  ".blb":"application/x-blorb",
  ".blorb":"application/x-blorb",
  ".bmi":"application/vnd.bmi",
  ".bmp":"image/bmp",
  ".body":"text/html",
  ".book":"application/vnd.framemaker",
  ".box":"application/vnd.previewsystems.box",
  ".boz":"application/x-bzip2",
  ".bpk":"application/octet-stream",
  ".btif":"image/prs.btif",
  ".bz":"application/x-bzip",
  ".bz2":"application/x-bzip2",
  ".c":"text/x-c",
  ".c11amc":"application/vnd.cluetrust.cartomobile-config",
  ".c11amz":"application/vnd.cluetrust.cartomobile-config-pkg",
  ".c4d":"application/vnd.clonk.c4group",
  ".c4f":"application/vnd.clonk.c4group",
  ".c4g":"application/vnd.clonk.c4group",
  ".c4p":"application/vnd.clonk.c4group",
  ".c4u":"application/vnd.clonk.c4group",
  ".cab":"application/vnd.ms-cab-compressed",
  ".caf":"audio/x-caf",
  ".cap":"application/vnd.tcpdump.pcap",
  ".car":"application/vnd.curl.car",
  ".cat":"application/vnd.ms-pki.seccat",
  ".cb7":"application/x-cbr",
  ".cba":"application/x-cbr",
  ".cbr":"application/x-cbr",
  ".cbt":"application/x-cbr",
  ".cbz":"application/x-cbr",
  ".cc":"text/x-c",
  ".cct":"application/x-director",
  ".ccxml":"application/ccxml+xml",
  ".cdbcmsg":"application/vnd.contact.cmsg",
  ".cdf":"application/x-cdf",
  ".cdkey":"application/vnd.mediastation.cdkey",
  ".cdmia":"application/cdmi-capability",
  ".cdmic":"application/cdmi-container",
  ".cdmid":"application/cdmi-domain",
  ".cdmio":"application/cdmi-object",
  ".cdmiq":"application/cdmi-queue",
  ".cdx":"chemical/x-cdx",
  ".cdxml":"application/vnd.chemdraw+xml",
  ".cdy":"application/vnd.cinderella",
  ".cer":"application/pkix-cert",
  ".cfs":"application/x-cfs-compressed",
  ".cgm":"image/cgm",
  ".chat":"application/x-chat",
  ".chm":"application/vnd.ms-htmlhelp",
  ".chrt":"application/vnd.kde.kchart",
  ".cif":"chemical/x-cif",
  ".cii":"application/vnd.anser-web-certificate-issue-initiation",
  ".cil":"application/vnd.ms-artgalry",
  ".cla":"application/vnd.claymore",
  ".class":"application/java",
  ".clkk":"application/vnd.crick.clicker.keyboard",
  ".clkp":"application/vnd.crick.clicker.palette",
  ".clkt":"application/vnd.crick.clicker.template",
  ".clkw":"application/vnd.crick.clicker.wordbank",
  ".clkx":"application/vnd.crick.clicker",
  ".clp":"application/x-msclip",
  ".cmc":"application/vnd.cosmocaller",
  ".cmdf":"chemical/x-cmdf",
  ".cml":"chemical/x-cml",
  ".cmp":"application/vnd.yellowriver-custom-menu",
  ".cmx":"image/x-cmx",
  ".cod":"application/vnd.rim.cod",
  ".com":"application/x-msdownload",
  ".conf":"text/plain",
  ".cpio":"application/x-cpio",
  ".cpp":"text/x-c",
  ".cpt":"application/mac-compactpro",
  ".crd":"application/x-mscardfile",
  ".crl":"application/pkix-crl",
  ".crt":"application/x-x509-ca-cert",
  ".cryptonote":"application/vnd.rig.cryptonote",
  ".csh":"application/x-csh",
  ".csml":"chemical/x-csml",
  ".csp":"application/vnd.commonspace",
  ".css":"text/css",
  ".cst":"application/x-director",
  ".csv":"text/csv",
  ".cu":"application/cu-seeme",
  ".curl":"text/vnd.curl",
  ".cww":"application/prs.cww",
  ".cxt":"application/x-director",
  ".cxx":"text/x-c",
  ".dae":"model/vnd.collada+xml",
  ".daf":"application/vnd.mobius.daf",
  ".dart":"application/vnd.dart",
  ".dataless":"application/vnd.fdsn.seed",
  ".davmount":"application/davmount+xml",
  ".dbk":"application/docbook+xml",
  ".dcr":"application/x-director",
  ".dcurl":"text/vnd.curl.dcurl",
  ".dd2":"application/vnd.oma.dd2+xml",
  ".ddd":"application/vnd.fujixerox.ddd",
  ".deb":"application/x-debian-package",
  ".def":"text/plain",
  ".deploy":"application/octet-stream",
  ".der":"application/x-x509-ca-cert",
  ".dfac":"application/vnd.dreamfactory",
  ".dgc":"application/x-dgc-compressed",
  ".dib":"image/bmp",
  ".dic":"text/x-c",
  ".dir":"application/x-director",
  ".dis":"application/vnd.mobius.dis",
  ".dist":"application/octet-stream",
  ".distz":"application/octet-stream",
  ".djv":"image/vnd.djvu",
  ".djvu":"image/vnd.djvu",
  ".dll":"application/x-msdownload",
  ".dmg":"application/x-apple-diskimage",
  ".dmp":"application/vnd.tcpdump.pcap",
  ".dms":"application/octet-stream",
  ".dna":"application/vnd.dna",
  ".doc":"application/msword",
  ".docm":"application/vnd.ms-word.document.macroenabled.12",
  ".docx":"application/vnd.openxmlformats-officedocument.wordprocessingml.document",
  ".dot":"application/msword",
  ".dotm":"application/vnd.ms-word.template.macroenabled.12",
  ".dotx":"application/vnd.openxmlformats-officedocument.wordprocessingml.template",
  ".dp":"application/vnd.osgi.dp",
  ".dpg":"application/vnd.dpgraph",
  ".dra":"audio/vnd.dra",
  ".dsc":"text/prs.lines.tag",
  ".dssc":"application/dssc+der",
  ".dtb":"application/x-dtbook+xml",
  ".dtd":"application/xml-dtd",
  ".dts":"audio/vnd.dts",
  ".dtshd":"audio/vnd.dts.hd",
  ".dump":"application/octet-stream",
  ".dv":"video/x-dv",
  ".dvb":"video/vnd.dvb.file",
  ".dvi":"application/x-dvi",
  ".dwf":"model/vnd.dwf",
  ".dwg":"image/vnd.dwg",
  ".dxf":"image/vnd.dxf",
  ".dxp":"application/vnd.spotfire.dxp",
  ".dxr":"application/x-director",
  ".ecelp4800":"audio/vnd.nuera.ecelp4800",
  ".ecelp7470":"audio/vnd.nuera.ecelp7470",
  ".ecelp9600":"audio/vnd.nuera.ecelp9600",
  ".ecma":"application/ecmascript",
  ".edm":"application/vnd.novadigm.edm",
  ".edx":"application/vnd.novadigm.edx",
  ".efif":"application/vnd.picsel",
  ".ei6":"application/vnd.pg.osasli",
  ".elc":"application/octet-stream",
  ".emf":"application/x-msmetafile",
  ".eml":"message/rfc822",
  ".emma":"application/emma+xml",
  ".emz":"application/x-msmetafile",
  ".eol":"audio/vnd.digital-winds",
  ".eot":"application/vnd.ms-fontobject",
  ".eps":"application/postscript",
  ".epub":"application/epub+zip",
  ".es3":"application/vnd.eszigno3+xml",
  ".esa":"application/vnd.osgi.subsystem",
  ".esf":"application/vnd.epson.esf",
  ".et3":"application/vnd.eszigno3+xml",
  ".etx":"text/x-setext",
  ".eva":"application/x-eva",
  ".evy":"application/x-envoy",
  ".exe":"application/octet-stream",
  ".exi":"application/exi",
  ".ext":"application/vnd.novadigm.ext",
  ".ez":"application/andrew-inset",
  ".ez2":"application/vnd.ezpix-album",
  ".ez3":"application/vnd.ezpix-package",
  ".f":"text/x-fortran",
  ".f4v":"video/x-f4v",
  ".f77":"text/x-fortran",
  ".f90":"text/x-fortran",
  ".fbs":"image/vnd.fastbidsheet",
  ".fcdt":"application/vnd.adobe.formscentral.fcdt",
  ".fcs":"application/vnd.isac.fcs",
  ".fdf":"application/vnd.fdf",
  ".fe_launch":"application/vnd.denovo.fcselayout-link",
  ".fg5":"application/vnd.fujitsu.oasysgp",
  ".fgd":"application/x-director",
  ".fh":"image/x-freehand",
  ".fh4":"image/x-freehand",
  ".fh5":"image/x-freehand",
  ".fh7":"image/x-freehand",
  ".fhc":"image/x-freehand",
  ".fig":"application/x-xfig",
  ".flac":"audio/flac",
  ".fli":"video/x-fli",
  ".flo":"application/vnd.micrografx.flo",
  ".flv":"video/x-flv",
  ".flw":"application/vnd.kde.kivio",
  ".flx":"text/vnd.fmi.flexstor",
  ".fly":"text/vnd.fly",
  ".fm":"application/vnd.framemaker",
  ".fnc":"application/vnd.frogans.fnc",
  ".for":"text/x-fortran",
  ".fpx":"image/vnd.fpx",
  ".frame":"application/vnd.framemaker",
  ".fsc":"application/vnd.fsc.weblaunch",
  ".fst":"image/vnd.fst",
  ".ftc":"application/vnd.fluxtime.clip",
  ".fti":"application/vnd.anser-web-funds-transfer-initiation",
  ".fvt":"video/vnd.fvt",
  ".fxp":"application/vnd.adobe.fxp",
  ".fxpl":"application/vnd.adobe.fxp",
  ".fzs":"application/vnd.fuzzysheet",
  ".g2w":"application/vnd.geoplan",
  ".g3":"image/g3fax",
  ".g3w":"application/vnd.geospace",
  ".gac":"application/vnd.groove-account",
  ".gam":"application/x-tads",
  ".gbr":"application/rpki-ghostbusters",
  ".gca":"application/x-gca-compressed",
  ".gdl":"model/vnd.gdl",
  ".geo":"application/vnd.dynageo",
  ".gex":"application/vnd.geometry-explorer",
  ".ggb":"application/vnd.geogebra.file",
  ".ggt":"application/vnd.geogebra.tool",
  ".ghf":"application/vnd.groove-help",
  ".gif":"image/gif",
  ".gim":"application/vnd.groove-identity-message",
  ".gml":"application/gml+xml",
  ".gmx":"application/vnd.gmx",
  ".gnumeric":"application/x-gnumeric",
  ".gph":"application/vnd.flographit",
  ".gpx":"application/gpx+xml",
  ".gqf":"application/vnd.grafeq",
  ".gqs":"application/vnd.grafeq",
  ".gram":"application/srgs",
  ".gramps":"application/x-gramps-xml",
  ".gre":"application/vnd.geometry-explorer",
  ".grv":"application/vnd.groove-injector",
  ".grxml":"application/srgs+xml",
  ".gsf":"application/x-font-ghostscript",
  ".gtar":"application/x-gtar",
  ".gtm":"application/vnd.groove-tool-message",
  ".gtw":"model/vnd.gtw",
  ".gv":"text/vnd.graphviz",
  ".gxf":"application/gxf",
  ".gxt":"application/vnd.geonext",
  ".gz":"application/x-gzip",
  ".h":"text/x-c",
  ".h261":"video/h261",
  ".h263":"video/h263",
  ".h264":"video/h264",
  ".hal":"application/vnd.hal+xml",
  ".hbci":"application/vnd.hbci",
  ".hdf":"application/x-hdf",
  ".hh":"text/x-c",
  ".hlp":"application/winhlp",
  ".hpgl":"application/vnd.hp-hpgl",
  ".hpid":"application/vnd.hp-hpid",
  ".hps":"application/vnd.hp-hps",
  ".hqx":"application/mac-binhex40",
  ".htc":"text/x-component",
  ".htke":"application/vnd.kenameaapp",
  ".htm":"text/html",
  ".html":"text/html",
  ".hvd":"application/vnd.yamaha.hv-dic",
  ".hvp":"application/vnd.yamaha.hv-voice",
  ".hvs":"application/vnd.yamaha.hv-script",
  ".i2g":"application/vnd.intergeo",
  ".icc":"application/vnd.iccprofile",
  ".ice":"x-conference/x-cooltalk",
  ".icm":"application/vnd.iccprofile",
  ".ico":"image/x-icon",
  ".ics":"text/calendar",
  ".ief":"image/ief",
  ".ifb":"text/calendar",
  ".ifm":"application/vnd.shana.informed.formdata",
  ".iges":"model/iges",
  ".igl":"application/vnd.igloader",
  ".igm":"application/vnd.insors.igm",
  ".igs":"model/iges",
  ".igx":"application/vnd.micrografx.igx",
  ".iif":"application/vnd.shana.informed.interchange",
  ".imp":"application/vnd.accpac.simply.imp",
  ".ims":"application/vnd.ms-ims",
  ".in":"text/plain",
  ".ink":"application/inkml+xml",
  ".inkml":"application/inkml+xml",
  ".install":"application/x-install-instructions",
  ".iota":"application/vnd.astraea-software.iota",
  ".ipfix":"application/ipfix",
  ".ipk":"application/vnd.shana.informed.package",
  ".irm":"application/vnd.ibm.rights-management",
  ".irp":"application/vnd.irepository.package+xml",
  ".iso":"application/x-iso9660-image",
  ".itp":"application/vnd.shana.informed.formtemplate",
  ".ivp":"application/vnd.immervision-ivp",
  ".ivu":"application/vnd.immervision-ivu",
  ".jad":"text/vnd.sun.j2me.app-descriptor",
  ".jam":"application/vnd.jam",
  ".jar":"application/java-archive",
  ".java":"text/x-java-source",
  ".jisp":"application/vnd.jisp",
  ".jlt":"application/vnd.hp-jlyt",
  ".jnlp":"application/x-java-jnlp-file",
  ".joda":"application/vnd.joost.joda-archive",
  ".jpe":"image/jpeg",
  ".jpeg":"image/jpeg",
  ".jpg":"image/jpeg",
  ".jpgm":"video/jpm",
  ".jpgv":"video/jpeg",
  ".jpm":"video/jpm",
  ".js":"application/javascript",
  ".jsf":"text/plain",
  ".json":"application/json",
  ".jsonml":"application/jsonml+json",
  ".jspf":"text/plain",
  ".kar":"audio/midi",
  ".karbon":"application/vnd.kde.karbon",
  ".kfo":"application/vnd.kde.kformula",
  ".kia":"application/vnd.kidspiration",
  ".kml":"application/vnd.google-earth.kml+xml",
  ".kmz":"application/vnd.google-earth.kmz",
  ".kne":"application/vnd.kinar",
  ".knp":"application/vnd.kinar",
  ".kon":"application/vnd.kde.kontour",
  ".kpr":"application/vnd.kde.kpresenter",
  ".kpt":"application/vnd.kde.kpresenter",
  ".kpxx":"application/vnd.ds-keypoint",
  ".ksp":"application/vnd.kde.kspread",
  ".ktr":"application/vnd.kahootz",
  ".ktx":"image/ktx",
  ".ktz":"application/vnd.kahootz",
  ".kwd":"application/vnd.kde.kword",
  ".kwt":"application/vnd.kde.kword",
  ".lasxml":"application/vnd.las.las+xml",
  ".latex":"application/x-latex",
  ".lbd":"application/vnd.llamagraphics.life-balance.desktop",
  ".lbe":"application/vnd.llamagraphics.life-balance.exchange+xml",
  ".les":"application/vnd.hhe.lesson-player",
  ".lha":"application/x-lzh-compressed",
  ".link66":"application/vnd.route66.link66+xml",
  ".list":"text/plain",
  ".list3820":"application/vnd.ibm.modcap",
  ".listafp":"application/vnd.ibm.modcap",
  ".lnk":"application/x-ms-shortcut",
  ".log":"text/plain",
  ".lostxml":"application/lost+xml",
  ".lrf":"application/octet-stream",
  ".lrm":"application/vnd.ms-lrm",
  ".ltf":"application/vnd.frogans.ltf",
  ".lvp":"audio/vnd.lucent.voice",
  ".lwp":"application/vnd.lotus-wordpro",
  ".lzh":"application/x-lzh-compressed",
  ".m13":"application/x-msmediaview",
  ".m14":"application/x-msmediaview",
  ".m1v":"video/mpeg",
  ".m21":"application/mp21",
  ".m2a":"audio/mpeg",
  ".m2v":"video/mpeg",
  ".m3a":"audio/mpeg",
  ".m3u":"audio/x-mpegurl",
  ".m3u8":"application/vnd.apple.mpegurl",
  ".m4a":"audio/mp4",
  ".m4b":"audio/mp4",
  ".m4r":"audio/mp4",
  ".m4u":"video/vnd.mpegurl",
  ".m4v":"video/mp4",
  ".ma":"application/mathematica",
  ".mac":"image/x-macpaint",
  ".mads":"application/mads+xml",
  ".mag":"application/vnd.ecowin.chart",
  ".maker":"application/vnd.framemaker",
  ".man":"text/troff",
  ".mar":"application/octet-stream",
  ".mathml":"application/mathml+xml",
  ".mb":"application/mathematica",
  ".mbk":"application/vnd.mobius.mbk",
  ".mbox":"application/mbox",
  ".mc1":"application/vnd.medcalcdata",
  ".mcd":"application/vnd.mcd",
  ".mcurl":"text/vnd.curl.mcurl",
  ".mdb":"application/x-msaccess",
  ".mdi":"image/vnd.ms-modi",
  ".me":"text/troff",
  ".mesh":"model/mesh",
  ".meta4":"application/metalink4+xml",
  ".metalink":"application/metalink+xml",
  ".mets":"application/mets+xml",
  ".mfm":"application/vnd.mfmp",
  ".mft":"application/rpki-manifest",
  ".mgp":"application/vnd.osgeo.mapguide.package",
  ".mgz":"application/vnd.proteus.magazine",
  ".mid":"audio/midi",
  ".midi":"audio/midi",
  ".mie":"application/x-mie",
  ".mif":"application/x-mif",
  ".mime":"message/rfc822",
  ".mj2":"video/mj2",
  ".mjp2":"video/mj2",
  ".mk3d":"video/x-matroska",
  ".mka":"audio/x-matroska",
  ".mks":"video/x-matroska",
  ".mkv":"video/x-matroska",
  ".mlp":"application/vnd.dolby.mlp",
  ".mmd":"application/vnd.chipnuts.karaoke-mmd",
  ".mmf":"application/vnd.smaf",
  ".mmr":"image/vnd.fujixerox.edmics-mmr",
  ".mng":"video/x-mng",
  ".mny":"application/x-msmoney",
  ".mobi":"application/x-mobipocket-ebook",
  ".mods":"application/mods+xml",
  ".mov":"video/quicktime",
  ".movie":"video/x-sgi-movie",
  ".mp1":"audio/mpeg",
  ".mp2":"audio/mpeg",
  ".mp21":"application/mp21",
  ".mp2a":"audio/mpeg",
  ".mp3":"audio/mpeg",
  ".mp4":"video/mp4",
  ".mp4a":"audio/mp4",
  ".mp4s":"application/mp4",
  ".mp4v":"video/mp4",
  ".mpa":"audio/mpeg",
  ".mpc":"application/vnd.mophun.certificate",
  ".mpe":"video/mpeg",
  ".mpeg":"video/mpeg",
  ".mpega":"audio/x-mpeg",
  ".mpg":"video/mpeg",
  ".mpg4":"video/mp4",
  ".mpga":"audio/mpeg",
  ".mpkg":"application/vnd.apple.installer+xml",
  ".mpm":"application/vnd.blueice.multipass",
  ".mpn":"application/vnd.mophun.application",
  ".mpp":"application/vnd.ms-project",
  ".mpt":"application/vnd.ms-project",
  ".mpv2":"video/mpeg2",
  ".mpy":"application/vnd.ibm.minipay",
  ".mqy":"application/vnd.mobius.mqy",
  ".mrc":"application/marc",
  ".mrcx":"application/marcxml+xml",
  ".ms":"text/troff",
  ".mscml":"application/mediaservercontrol+xml",
  ".mseed":"application/vnd.fdsn.mseed",
  ".mseq":"application/vnd.mseq",
  ".msf":"application/vnd.epson.msf",
  ".msh":"model/mesh",
  ".msi":"application/x-msdownload",
  ".msl":"application/vnd.mobius.msl",
  ".msty":"application/vnd.muvee.style",
  ".mts":"model/vnd.mts",
  ".mus":"application/vnd.musician",
  ".musicxml":"application/vnd.recordare.musicxml+xml",
  ".mvb":"application/x-msmediaview",
  ".mwf":"application/vnd.mfer",
  ".mxf":"application/mxf",
  ".mxl":"application/vnd.recordare.musicxml",
  ".mxml":"application/xv+xml",
  ".mxs":"application/vnd.triscape.mxs",
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  ".z":"application/x-compress",
  ".Z":"application/x-compress",
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