整理spring-web里支持的文件以及对应的Content-Type

前言

最近在弄文件上传、下载、在线预览时经常需要设置请求标头或者响应标头的Content-Type 属性。所以研究了一下spring支持哪些Content-Type，通过研究MediaTypeFactory.getMediaType的源码，可以得知spring是将支持的Content-Type 维护在/org/springframework/http/mime.types文件中。

private static MultiValueMap<String, MediaType> parseMimeTypes() {
        InputStream is = MediaTypeFactory.class.getResourceAsStream("/org/springframework/http/mime.types");

        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(is, StandardCharsets.US_ASCII));
            Throwable var2 = null;

            try {
                MultiValueMap<String, MediaType> result = new LinkedMultiValueMap();

                label111:
                while(true) {
                    String line;
                    if ((line = reader.readLine()) != null) {
                        if (line.isEmpty() || line.charAt(0) == '#') {
                            continue;
                        }

                        String[] tokens = StringUtils.tokenizeToStringArray(line, " \t\n\r\f");
                        MediaType mediaType = MediaType.parseMediaType(tokens[0]);
                        int i = 1;

                        while(true) {
                            if (i >= tokens.length) {
                                continue label111;
                            }

                            String fileExtension = tokens[i].toLowerCase(Locale.ENGLISH);
                            result.add(fileExtension, mediaType);
                            ++i;
                        }
                    }

                    LinkedMultiValueMap var5 = result;
                    return var5;
                }
            } catch (Throwable var17) {
                var2 = var17;
                throw var17;
            } finally {
                if (reader != null) {
                    if (var2 != null) {
                        try {
                            reader.close();
                        } catch (Throwable var16) {
                            var2.addSuppressed(var16);
                        }
                    } else {
                        reader.close();
                    }
                }

            }
        } catch (IOException var19) {
            throw new IllegalStateException("Could not load '/org/springframework/http/mime.types'", var19);
        }
    }

通过上面查找文件的路径找到了org.springframework:spring-web包下http目录中的mime.types文件

结果打开后居然发现 有多达1838个Content-Type，不过许多都是被注释掉的。过滤掉被注释的最终能被获取出来的一共是982个，本着好记性不如烂笔头的精神，我把这982个Content-Type已经它对应的文件后缀，整理了一下，形成了下面的表格，也方便以后查阅。

mime.types文件：

​spring-web将mime.types文件加载到这个map里

spring-web里支持的文件以及对应的Content-Type

文件类型	MIME Type
ez	application/andrew-inset
aw	application/applixware
atom	application/atom+xml
atomcat	application/atomcat+xml
atomsvc	application/atomsvc+xml
ccxml	application/ccxml+xml
cdmia	application/cdmi-capability
cdmic	application/cdmi-container
cdmid	application/cdmi-domain
cdmio	application/cdmi-object
cdmiq	application/cdmi-queue
cu	application/cu-seeme
davmount	application/davmount+xml
dbk	application/docbook+xml
dssc	application/dssc+der
xdssc	application/dssc+xml
ecma	application/ecmascript
emma	application/emma+xml
epub	application/epub+zip
exi	application/exi
pfr	application/font-tdpfr
woff	application/font-woff
gml	application/gml+xml
gpx	application/gpx+xml
gxf	application/gxf
stk	application/hyperstudio
ink	application/inkml+xml
inkml	application/inkml+xml
ipfix	application/ipfix
jar	application/java-archive
ser	application/java-serialized-object
class	application/java-vm
js	application/javascript
json	application/json
jsonml	application/jsonml+json
lostxml	application/lost+xml
hqx	application/mac-binhex40
cpt	application/mac-compactpro
mads	application/mads+xml
mrc	application/marc
mrcx	application/marcxml+xml
ma	application/mathematica
nb	application/mathematica
mb	application/mathematica
mathml	application/mathml+xml
mbox	application/mbox
mscml	application/mediaservercontrol+xml
metalink	application/metalink+xml
meta4	application/metalink4+xml
mets	application/mets+xml
mods	application/mods+xml
m21	application/mp21
mp21	application/mp21
mp4s	application/mp4
doc	application/msword
dot	application/msword
mxf	application/mxf
bin	application/octet-stream
dms	application/octet-stream
lrf	application/octet-stream
mar	application/octet-stream
so	application/octet-stream
dist	application/octet-stream
distz	application/octet-stream
pkg	application/octet-stream
bpk	application/octet-stream
dump	application/octet-stream
elc	application/octet-stream
deploy	application/octet-stream
oda	application/oda
opf	application/oebps-package+xml
ogx	application/ogg
omdoc	application/omdoc+xml
onetoc	application/onenote
onetoc2	application/onenote
onetmp	application/onenote
onepkg	application/onenote
oxps	application/oxps
xer	application/patch-ops-error+xml
pdf	application/pdf
pgp	application/pgp-encrypted
asc	application/pgp-signature
sig	application/pgp-signature
prf	application/pics-rules
p10	application/pkcs10
p7m	application/pkcs7-mime
p7c	application/pkcs7-mime
p7s	application/pkcs7-signature
p8	application/pkcs8
ac	application/pkix-attr-cert
cer	application/pkix-cert
crl	application/pkix-crl
pkipath	application/pkix-pkipath
pki	application/pkixcmp
pls	application/pls+xml
ai	application/postscript
eps	application/postscript
ps	application/postscript
cww	application/prs.cww
pskcxml	application/pskc+xml
rdf	application/rdf+xml
rif	application/reginfo+xml
rnc	application/relax-ng-compact-syntax
rl	application/resource-lists+xml
rld	application/resource-lists-diff+xml
rs	application/rls-services+xml
gbr	application/rpki-ghostbusters
mft	application/rpki-manifest
roa	application/rpki-roa
rsd	application/rsd+xml
rss	application/rss+xml
rtf	application/rtf
sbml	application/sbml+xml
scq	application/scvp-cv-request
scs	application/scvp-cv-response
spq	application/scvp-vp-request
spp	application/scvp-vp-response
sdp	application/sdp
setpay	application/set-payment-initiation
setreg	application/set-registration-initiation
shf	application/shf+xml
smi	application/smil+xml
smil	application/smil+xml
rq	application/sparql-query
srx	application/sparql-results+xml
gram	application/srgs
grxml	application/srgs+xml
sru	application/sru+xml
ssdl	application/ssdl+xml
ssml	application/ssml+xml
tei	application/tei+xml
teicorpus	application/tei+xml
tfi	application/thraud+xml
tsd	application/timestamped-data
plb	application/vnd.3gpp.pic-bw-large
psb	application/vnd.3gpp.pic-bw-small
pvb	application/vnd.3gpp.pic-bw-var
tcap	application/vnd.3gpp2.tcap
pwn	application/vnd.3m.post-it-notes
aso	application/vnd.accpac.simply.aso
imp	application/vnd.accpac.simply.imp
acu	application/vnd.acucobol
atc	application/vnd.acucorp
acutc	application/vnd.acucorp
air	application/vnd.adobe.air-application-installer-package+zip
fcdt	application/vnd.adobe.formscentral.fcdt
fxp	application/vnd.adobe.fxp
fxpl	application/vnd.adobe.fxp
xdp	application/vnd.adobe.xdp+xml
xfdf	application/vnd.adobe.xfdf
ahead	application/vnd.ahead.space
azf	application/vnd.airzip.filesecure.azf
azs	application/vnd.airzip.filesecure.azs
azw	application/vnd.amazon.ebook
acc	application/vnd.americandynamics.acc
ami	application/vnd.amiga.ami
apk	application/vnd.android.package-archive
cii	application/vnd.anser-web-certificate-issue-initiation
fti	application/vnd.anser-web-funds-transfer-initiation
atx	application/vnd.antix.game-component
mpkg	application/vnd.apple.installer+xml
m3u8	application/vnd.apple.mpegurl
swi	application/vnd.aristanetworks.swi
iota	application/vnd.astraea-software.iota
aep	application/vnd.audiograph
mpm	application/vnd.blueice.multipass
bmi	application/vnd.bmi
rep	application/vnd.businessobjects
cdxml	application/vnd.chemdraw+xml
mmd	application/vnd.chipnuts.karaoke-mmd
cdy	application/vnd.cinderella
cla	application/vnd.claymore
rp9	application/vnd.cloanto.rp9
c4g	application/vnd.clonk.c4group
c4d	application/vnd.clonk.c4group
c4f	application/vnd.clonk.c4group
c4p	application/vnd.clonk.c4group
c4u	application/vnd.clonk.c4group
c11amc	application/vnd.cluetrust.cartomobile-config
c11amz	application/vnd.cluetrust.cartomobile-config-pkg
csp	application/vnd.commonspace
cdbcmsg	application/vnd.contact.cmsg
cmc	application/vnd.cosmocaller
clkx	application/vnd.crick.clicker
clkk	application/vnd.crick.clicker.keyboard
clkp	application/vnd.crick.clicker.palette
clkt	application/vnd.crick.clicker.template
clkw	application/vnd.crick.clicker.wordbank
wbs	application/vnd.criticaltools.wbs+xml
pml	application/vnd.ctc-posml
ppd	application/vnd.cups-ppd
car	application/vnd.curl.car
pcurl	application/vnd.curl.pcurl
dart	application/vnd.dart
rdz	application/vnd.data-vision.rdz
uvf	application/vnd.dece.data
uvvf	application/vnd.dece.data
uvd	application/vnd.dece.data
uvvd	application/vnd.dece.data
uvt	application/vnd.dece.ttml+xml
uvvt	application/vnd.dece.ttml+xml
uvx	application/vnd.dece.unspecified
uvvx	application/vnd.dece.unspecified
uvz	application/vnd.dece.zip
uvvz	application/vnd.dece.zip
fe_launch	application/vnd.denovo.fcselayout-link
dna	application/vnd.dna
mlp	application/vnd.dolby.mlp
dpg	application/vnd.dpgraph
dfac	application/vnd.dreamfactory
kpxx	application/vnd.ds-keypoint
ait	application/vnd.dvb.ait
svc	application/vnd.dvb.service
geo	application/vnd.dynageo
mag	application/vnd.ecowin.chart
nml	application/vnd.enliven
esf	application/vnd.epson.esf
msf	application/vnd.epson.msf
qam	application/vnd.epson.quickanime
slt	application/vnd.epson.salt
ssf	application/vnd.epson.ssf
es3	application/vnd.eszigno3+xml
et3	application/vnd.eszigno3+xml
ez2	application/vnd.ezpix-album
ez3	application/vnd.ezpix-package
fdf	application/vnd.fdf
mseed	application/vnd.fdsn.mseed
seed	application/vnd.fdsn.seed
dataless	application/vnd.fdsn.seed
gph	application/vnd.flographit
ftc	application/vnd.fluxtime.clip
fm	application/vnd.framemaker
frame	application/vnd.framemaker
maker	application/vnd.framemaker
book	application/vnd.framemaker
fnc	application/vnd.frogans.fnc
ltf	application/vnd.frogans.ltf
fsc	application/vnd.fsc.weblaunch
oas	application/vnd.fujitsu.oasys
oa2	application/vnd.fujitsu.oasys2
oa3	application/vnd.fujitsu.oasys3
fg5	application/vnd.fujitsu.oasysgp
bh2	application/vnd.fujitsu.oasysprs
ddd	application/vnd.fujixerox.ddd
xdw	application/vnd.fujixerox.docuworks
xbd	application/vnd.fujixerox.docuworks.binder
fzs	application/vnd.fuzzysheet
txd	application/vnd.genomatix.tuxedo
ggb	application/vnd.geogebra.file
ggt	application/vnd.geogebra.tool
gex	application/vnd.geometry-explorer
gre	application/vnd.geometry-explorer
gxt	application/vnd.geonext
g2w	application/vnd.geoplan
g3w	application/vnd.geospace
gmx	application/vnd.gmx
kml	application/vnd.google-earth.kml+xml
kmz	application/vnd.google-earth.kmz
gqf	application/vnd.grafeq
gqs	application/vnd.grafeq
gac	application/vnd.groove-account
ghf	application/vnd.groove-help
gim	application/vnd.groove-identity-message
grv	application/vnd.groove-injector
gtm	application/vnd.groove-tool-message
tpl	application/vnd.groove-tool-template
vcg	application/vnd.groove-vcard
hal	application/vnd.hal+xml
zmm	application/vnd.handheld-entertainment+xml
hbci	application/vnd.hbci
les	application/vnd.hhe.lesson-player
hpgl	application/vnd.hp-hpgl
hpid	application/vnd.hp-hpid
hps	application/vnd.hp-hps
jlt	application/vnd.hp-jlyt
pcl	application/vnd.hp-pcl
pclxl	application/vnd.hp-pclxl
sfd-hdstx	application/vnd.hydrostatix.sof-data
mpy	application/vnd.ibm.minipay
afp	application/vnd.ibm.modcap
listafp	application/vnd.ibm.modcap
list3820	application/vnd.ibm.modcap
irm	application/vnd.ibm.rights-management
sc	application/vnd.ibm.secure-container
icc	application/vnd.iccprofile
icm	application/vnd.iccprofile
igl	application/vnd.igloader
ivp	application/vnd.immervision-ivp
ivu	application/vnd.immervision-ivu
igm	application/vnd.insors.igm
xpw	application/vnd.intercon.formnet
xpx	application/vnd.intercon.formnet
i2g	application/vnd.intergeo
qbo	application/vnd.intu.qbo
qfx	application/vnd.intu.qfx
rcprofile	application/vnd.ipunplugged.rcprofile
irp	application/vnd.irepository.package+xml
xpr	application/vnd.is-xpr
fcs	application/vnd.isac.fcs
jam	application/vnd.jam
rms	application/vnd.jcp.javame.midlet-rms
jisp	application/vnd.jisp
joda	application/vnd.joost.joda-archive
ktz	application/vnd.kahootz
ktr	application/vnd.kahootz
karbon	application/vnd.kde.karbon
chrt	application/vnd.kde.kchart
kfo	application/vnd.kde.kformula
flw	application/vnd.kde.kivio
kon	application/vnd.kde.kontour
kpr	application/vnd.kde.kpresenter
kpt	application/vnd.kde.kpresenter
ksp	application/vnd.kde.kspread
kwd	application/vnd.kde.kword
kwt	application/vnd.kde.kword
htke	application/vnd.kenameaapp
kia	application/vnd.kidspiration
kne	application/vnd.kinar
knp	application/vnd.kinar
skp	application/vnd.koan
skd	application/vnd.koan
skt	application/vnd.koan
skm	application/vnd.koan
sse	application/vnd.kodak-descriptor
lasxml	application/vnd.las.las+xml
lbd	application/vnd.llamagraphics.life-balance.desktop
lbe	application/vnd.llamagraphics.life-balance.exchange+xml
123	application/vnd.lotus-1-2-3
apr	application/vnd.lotus-approach
pre	application/vnd.lotus-freelance
nsf	application/vnd.lotus-notes
org	application/vnd.lotus-organizer
scm	application/vnd.lotus-screencam
lwp	application/vnd.lotus-wordpro
portpkg	application/vnd.macports.portpkg
mcd	application/vnd.mcd
mc1	application/vnd.medcalcdata
cdkey	application/vnd.mediastation.cdkey
mwf	application/vnd.mfer
mfm	application/vnd.mfmp
flo	application/vnd.micrografx.flo
igx	application/vnd.micrografx.igx
mif	application/vnd.mif
daf	application/vnd.mobius.daf
dis	application/vnd.mobius.dis
mbk	application/vnd.mobius.mbk
mqy	application/vnd.mobius.mqy
msl	application/vnd.mobius.msl
plc	application/vnd.mobius.plc
txf	application/vnd.mobius.txf
mpn	application/vnd.mophun.application
mpc	application/vnd.mophun.certificate
xul	application/vnd.mozilla.xul+xml
cil	application/vnd.ms-artgalry
cab	application/vnd.ms-cab-compressed
xls	application/vnd.ms-excel
xlm	application/vnd.ms-excel
xla	application/vnd.ms-excel
xlc	application/vnd.ms-excel
xlt	application/vnd.ms-excel
xlw	application/vnd.ms-excel
xlam	application/vnd.ms-excel.addin.macroenabled.12
xlsb	application/vnd.ms-excel.sheet.binary.macroenabled.12
xlsm	application/vnd.ms-excel.sheet.macroenabled.12
xltm	application/vnd.ms-excel.template.macroenabled.12
eot	application/vnd.ms-fontobject
chm	application/vnd.ms-htmlhelp
ims	application/vnd.ms-ims
lrm	application/vnd.ms-lrm
thmx	application/vnd.ms-officetheme
cat	application/vnd.ms-pki.seccat
stl	application/vnd.ms-pki.stl
ppt	application/vnd.ms-powerpoint
pps	application/vnd.ms-powerpoint
pot	application/vnd.ms-powerpoint
ppam	application/vnd.ms-powerpoint.addin.macroenabled.12
pptm	application/vnd.ms-powerpoint.presentation.macroenabled.12
sldm	application/vnd.ms-powerpoint.slide.macroenabled.12
ppsm	application/vnd.ms-powerpoint.slideshow.macroenabled.12
potm	application/vnd.ms-powerpoint.template.macroenabled.12
mpp	application/vnd.ms-project
mpt	application/vnd.ms-project
docm	application/vnd.ms-word.document.macroenabled.12
dotm	application/vnd.ms-word.template.macroenabled.12
wps	application/vnd.ms-works
wks	application/vnd.ms-works
wcm	application/vnd.ms-works
wdb	application/vnd.ms-works
wpl	application/vnd.ms-wpl
xps	application/vnd.ms-xpsdocument
mseq	application/vnd.mseq
mus	application/vnd.musician
msty	application/vnd.muvee.style
taglet	application/vnd.mynfc
nlu	application/vnd.neurolanguage.nlu
ntf	application/vnd.nitf
nitf	application/vnd.nitf
nnd	application/vnd.noblenet-directory
nns	application/vnd.noblenet-sealer
nnw	application/vnd.noblenet-web
ngdat	application/vnd.nokia.n-gage.data
n-gage	application/vnd.nokia.n-gage.symbian.install
rpst	application/vnd.nokia.radio-preset
rpss	application/vnd.nokia.radio-presets
edm	application/vnd.novadigm.edm
edx	application/vnd.novadigm.edx
ext	application/vnd.novadigm.ext
odc	application/vnd.oasis.opendocument.chart
otc	application/vnd.oasis.opendocument.chart-template
odb	application/vnd.oasis.opendocument.database
odf	application/vnd.oasis.opendocument.formula
odft	application/vnd.oasis.opendocument.formula-template
odg	application/vnd.oasis.opendocument.graphics
otg	application/vnd.oasis.opendocument.graphics-template
odi	application/vnd.oasis.opendocument.image
oti	application/vnd.oasis.opendocument.image-template
odp	application/vnd.oasis.opendocument.presentation
otp	application/vnd.oasis.opendocument.presentation-template
ods	application/vnd.oasis.opendocument.spreadsheet
ots	application/vnd.oasis.opendocument.spreadsheet-template
odt	application/vnd.oasis.opendocument.text
odm	application/vnd.oasis.opendocument.text-master
ott	application/vnd.oasis.opendocument.text-template
oth	application/vnd.oasis.opendocument.text-web
xo	application/vnd.olpc-sugar
dd2	application/vnd.oma.dd2+xml
oxt	application/vnd.openofficeorg.extension
pptx	application/vnd.openxmlformats-officedocument.presentationml.presentation
sldx	application/vnd.openxmlformats-officedocument.presentationml.slide
ppsx	application/vnd.openxmlformats-officedocument.presentationml.slideshow
potx	application/vnd.openxmlformats-officedocument.presentationml.template
xlsx	application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
xltx	application/vnd.openxmlformats-officedocument.spreadsheetml.template
docx	application/vnd.openxmlformats-officedocument.wordprocessingml.document
dotx	application/vnd.openxmlformats-officedocument.wordprocessingml.template
mgp	application/vnd.osgeo.mapguide.package
dp	application/vnd.osgi.dp
esa	application/vnd.osgi.subsystem
pdb	application/vnd.palm
pqa	application/vnd.palm
oprc	application/vnd.palm
paw	application/vnd.pawaafile
str	application/vnd.pg.format
ei6	application/vnd.pg.osasli
efif	application/vnd.picsel
wg	application/vnd.pmi.widget
plf	application/vnd.pocketlearn
pbd	application/vnd.powerbuilder6
box	application/vnd.previewsystems.box
mgz	application/vnd.proteus.magazine
qps	application/vnd.publishare-delta-tree
ptid	application/vnd.pvi.ptid1
qxd	application/vnd.quark.quarkxpress
qxt	application/vnd.quark.quarkxpress
qwd	application/vnd.quark.quarkxpress
qwt	application/vnd.quark.quarkxpress
qxl	application/vnd.quark.quarkxpress
qxb	application/vnd.quark.quarkxpress
bed	application/vnd.realvnc.bed
mxl	application/vnd.recordare.musicxml
musicxml	application/vnd.recordare.musicxml+xml
cryptonote	application/vnd.rig.cryptonote
cod	application/vnd.rim.cod
rm	application/vnd.rn-realmedia
rmvb	application/vnd.rn-realmedia-vbr
link66	application/vnd.route66.link66+xml
st	application/vnd.sailingtracker.track
see	application/vnd.seemail
sema	application/vnd.sema
semd	application/vnd.semd
semf	application/vnd.semf
ifm	application/vnd.shana.informed.formdata
itp	application/vnd.shana.informed.formtemplate
iif	application/vnd.shana.informed.interchange
ipk	application/vnd.shana.informed.package
twd	application/vnd.simtech-mindmapper
twds	application/vnd.simtech-mindmapper
mmf	application/vnd.smaf
teacher	application/vnd.smart.teacher
sdkm	application/vnd.solent.sdkm+xml
sdkd	application/vnd.solent.sdkm+xml
dxp	application/vnd.spotfire.dxp
sfs	application/vnd.spotfire.sfs
sdc	application/vnd.stardivision.calc
sda	application/vnd.stardivision.draw
sdd	application/vnd.stardivision.impress
smf	application/vnd.stardivision.math
sdw	application/vnd.stardivision.writer
vor	application/vnd.stardivision.writer
sgl	application/vnd.stardivision.writer-global
smzip	application/vnd.stepmania.package
sm	application/vnd.stepmania.stepchart
sxc	application/vnd.sun.xml.calc
stc	application/vnd.sun.xml.calc.template
sxd	application/vnd.sun.xml.draw
std	application/vnd.sun.xml.draw.template
sxi	application/vnd.sun.xml.impress
sti	application/vnd.sun.xml.impress.template
sxm	application/vnd.sun.xml.math
sxw	application/vnd.sun.xml.writer
sxg	application/vnd.sun.xml.writer.global
stw	application/vnd.sun.xml.writer.template
sus	application/vnd.sus-calendar
susp	application/vnd.sus-calendar
svd	application/vnd.svd
sis	application/vnd.symbian.install
sisx	application/vnd.symbian.install
xsm	application/vnd.syncml+xml
bdm	application/vnd.syncml.dm+wbxml
xdm	application/vnd.syncml.dm+xml
tao	application/vnd.tao.intent-module-archive
pcap	application/vnd.tcpdump.pcap
cap	application/vnd.tcpdump.pcap
dmp	application/vnd.tcpdump.pcap
tmo	application/vnd.tmobile-livetv
tpt	application/vnd.trid.tpt
mxs	application/vnd.triscape.mxs
tra	application/vnd.trueapp
ufd	application/vnd.ufdl
ufdl	application/vnd.ufdl
utz	application/vnd.uiq.theme
umj	application/vnd.umajin
unityweb	application/vnd.unity
uoml	application/vnd.uoml+xml
vcx	application/vnd.vcx
vsd	application/vnd.visio
vst	application/vnd.visio
vss	application/vnd.visio
vsw	application/vnd.visio
vis	application/vnd.visionary
vsf	application/vnd.vsf
wbxml	application/vnd.wap.wbxml
wmlc	application/vnd.wap.wmlc
wmlsc	application/vnd.wap.wmlscriptc
wtb	application/vnd.webturbo
nbp	application/vnd.wolfram.player
wpd	application/vnd.wordperfect
wqd	application/vnd.wqd
stf	application/vnd.wt.stf
xar	application/vnd.xara
xfdl	application/vnd.xfdl
hvd	application/vnd.yamaha.hv-dic
hvs	application/vnd.yamaha.hv-script
hvp	application/vnd.yamaha.hv-voice
osf	application/vnd.yamaha.openscoreformat
osfpvg	application/vnd.yamaha.openscoreformat.osfpvg+xml
saf	application/vnd.yamaha.smaf-audio
spf	application/vnd.yamaha.smaf-phrase
cmp	application/vnd.yellowriver-custom-menu
zir	application/vnd.zul
zirz	application/vnd.zul
zaz	application/vnd.zzazz.deck+xml
vxml	application/voicexml+xml
wgt	application/widget
hlp	application/winhlp
wsdl	application/wsdl+xml
wspolicy	application/wspolicy+xml
7z	application/x-7z-compressed
abw	application/x-abiword
ace	application/x-ace-compressed
dmg	application/x-apple-diskimage
aab	application/x-authorware-bin
x32	application/x-authorware-bin
u32	application/x-authorware-bin
vox	application/x-authorware-bin
aam	application/x-authorware-map
aas	application/x-authorware-seg
bcpio	application/x-bcpio
torrent	application/x-bittorrent
blb	application/x-blorb
blorb	application/x-blorb
bz	application/x-bzip
bz2	application/x-bzip2
boz	application/x-bzip2
cbr	application/x-cbr
cba	application/x-cbr
cbt	application/x-cbr
cbz	application/x-cbr
cb7	application/x-cbr
vcd	application/x-cdlink
cfs	application/x-cfs-compressed
chat	application/x-chat
pgn	application/x-chess-pgn
nsc	application/x-conference
cpio	application/x-cpio
csh	application/x-csh
deb	application/x-debian-package
udeb	application/x-debian-package
dgc	application/x-dgc-compressed
dir	application/x-director
dcr	application/x-director
dxr	application/x-director
cst	application/x-director
cct	application/x-director
cxt	application/x-director
w3d	application/x-director
fgd	application/x-director
swa	application/x-director
wad	application/x-doom
ncx	application/x-dtbncx+xml
dtb	application/x-dtbook+xml
res	application/x-dtbresource+xml
dvi	application/x-dvi
evy	application/x-envoy
eva	application/x-eva
bdf	application/x-font-bdf
gsf	application/x-font-ghostscript
psf	application/x-font-linux-psf
otf	application/x-font-otf
pcf	application/x-font-pcf
snf	application/x-font-snf
ttf	application/x-font-ttf
ttc	application/x-font-ttf
pfa	application/x-font-type1
pfb	application/x-font-type1
pfm	application/x-font-type1
afm	application/x-font-type1
arc	application/x-freearc
spl	application/x-futuresplash
gca	application/x-gca-compressed
ulx	application/x-glulx
gnumeric	application/x-gnumeric
gramps	application/x-gramps-xml
gtar	application/x-gtar
hdf	application/x-hdf
install	application/x-install-instructions
iso	application/x-iso9660-image
jnlp	application/x-java-jnlp-file
latex	application/x-latex
lzh	application/x-lzh-compressed
lha	application/x-lzh-compressed
mie	application/x-mie
prc	application/x-mobipocket-ebook
mobi	application/x-mobipocket-ebook
application	application/x-ms-application
lnk	application/x-ms-shortcut
wmd	application/x-ms-wmd
wmz	application/x-ms-wmz
xbap	application/x-ms-xbap
mdb	application/x-msaccess
obd	application/x-msbinder
crd	application/x-mscardfile
clp	application/x-msclip
exe	application/x-msdownload
dll	application/x-msdownload
com	application/x-msdownload
bat	application/x-msdownload
msi	application/x-msdownload
mvb	application/x-msmediaview
m13	application/x-msmediaview
m14	application/x-msmediaview
wmf	application/x-msmetafile
emf	application/x-msmetafile
emz	application/x-msmetafile
mny	application/x-msmoney
pub	application/x-mspublisher
scd	application/x-msschedule
trm	application/x-msterminal
wri	application/x-mswrite
nc	application/x-netcdf
cdf	application/x-netcdf
nzb	application/x-nzb
p12	application/x-pkcs12
pfx	application/x-pkcs12
p7b	application/x-pkcs7-certificates
spc	application/x-pkcs7-certificates
p7r	application/x-pkcs7-certreqresp
rar	application/x-rar-compressed
ris	application/x-research-info-systems
sh	application/x-sh
shar	application/x-shar
swf	application/x-shockwave-flash
xap	application/x-silverlight-app
sql	application/x-sql
sit	application/x-stuffit
sitx	application/x-stuffitx
srt	application/x-subrip
sv4cpio	application/x-sv4cpio
sv4crc	application/x-sv4crc
t3	application/x-t3vm-image
gam	application/x-tads
tar	application/x-tar
tcl	application/x-tcl
tex	application/x-tex
tfm	application/x-tex-tfm
texinfo	application/x-texinfo
texi	application/x-texinfo
obj	application/x-tgif
ustar	application/x-ustar
src	application/x-wais-source
der	application/x-x509-ca-cert
crt	application/x-x509-ca-cert
fig	application/x-xfig
xlf	application/x-xliff+xml
xpi	application/x-xpinstall
xz	application/x-xz
z1	application/x-zmachine
z2	application/x-zmachine
z3	application/x-zmachine
z4	application/x-zmachine
z5	application/x-zmachine
z6	application/x-zmachine
z7	application/x-zmachine
z8	application/x-zmachine
xaml	application/xaml+xml
xdf	application/xcap-diff+xml
xenc	application/xenc+xml
xhtml	application/xhtml+xml
xht	application/xhtml+xml
xml	application/xml
xsl	application/xml
dtd	application/xml-dtd
xop	application/xop+xml
xpl	application/xproc+xml
xslt	application/xslt+xml
xspf	application/xspf+xml
mxml	application/xv+xml
xhvml	application/xv+xml
xvml	application/xv+xml
xvm	application/xv+xml
yang	application/yang
yin	application/yin+xml
zip	application/zip
adp	audio/adpcm
au	audio/basic
snd	audio/basic
mid	audio/midi
midi	audio/midi
kar	audio/midi
rmi	audio/midi
m4a	audio/mp4
mp4a	audio/mp4
mpga	audio/mpeg
mp2	audio/mpeg
mp2a	audio/mpeg
mp3	audio/mpeg
m2a	audio/mpeg
m3a	audio/mpeg
oga	audio/ogg
ogg	audio/ogg
spx	audio/ogg
s3m	audio/s3m
sil	audio/silk
uva	audio/vnd.dece.audio
uvva	audio/vnd.dece.audio
eol	audio/vnd.digital-winds
dra	audio/vnd.dra
dts	audio/vnd.dts
dtshd	audio/vnd.dts.hd
lvp	audio/vnd.lucent.voice
pya	audio/vnd.ms-playready.media.pya
ecelp4800	audio/vnd.nuera.ecelp4800
ecelp7470	audio/vnd.nuera.ecelp7470
ecelp9600	audio/vnd.nuera.ecelp9600
rip	audio/vnd.rip
weba	audio/webm
aac	audio/x-aac
aif	audio/x-aiff
aiff	audio/x-aiff
aifc	audio/x-aiff
caf	audio/x-caf
flac	audio/x-flac
mka	audio/x-matroska
m3u	audio/x-mpegurl
wax	audio/x-ms-wax
wma	audio/x-ms-wma
ram	audio/x-pn-realaudio
ra	audio/x-pn-realaudio
rmp	audio/x-pn-realaudio-plugin
wav	audio/x-wav
xm	audio/xm
cdx	chemical/x-cdx
cif	chemical/x-cif
cmdf	chemical/x-cmdf
cml	chemical/x-cml
csml	chemical/x-csml
xyz	chemical/x-xyz
bmp	image/bmp
cgm	image/cgm
g3	image/g3fax
gif	image/gif
ief	image/ief
jpeg	image/jpeg
jpg	image/jpeg
jpe	image/jpeg
ktx	image/ktx
png	image/png
btif	image/prs.btif
sgi	image/sgi
svg	image/svg+xml
svgz	image/svg+xml
tiff	image/tiff
tif	image/tiff
psd	image/vnd.adobe.photoshop
uvi	image/vnd.dece.graphic
uvvi	image/vnd.dece.graphic
uvg	image/vnd.dece.graphic
uvvg	image/vnd.dece.graphic
djvu	image/vnd.djvu
djv	image/vnd.djvu
sub	image/vnd.dvb.subtitle
dwg	image/vnd.dwg
dxf	image/vnd.dxf
fbs	image/vnd.fastbidsheet
fpx	image/vnd.fpx
fst	image/vnd.fst
mmr	image/vnd.fujixerox.edmics-mmr
rlc	image/vnd.fujixerox.edmics-rlc
mdi	image/vnd.ms-modi
wdp	image/vnd.ms-photo
npx	image/vnd.net-fpx
wbmp	image/vnd.wap.wbmp
xif	image/vnd.xiff
webp	image/webp
3ds	image/x-3ds
ras	image/x-cmu-raster
cmx	image/x-cmx
fh	image/x-freehand
fhc	image/x-freehand
fh4	image/x-freehand
fh5	image/x-freehand
fh7	image/x-freehand
ico	image/x-icon
sid	image/x-mrsid-image
pcx	image/x-pcx
pic	image/x-pict
pct	image/x-pict
pnm	image/x-portable-anymap
pbm	image/x-portable-bitmap
pgm	image/x-portable-graymap
ppm	image/x-portable-pixmap
rgb	image/x-rgb
tga	image/x-tga
xbm	image/x-xbitmap
xpm	image/x-xpixmap
xwd	image/x-xwindowdump
eml	message/rfc822
mime	message/rfc822
igs	model/iges
iges	model/iges
msh	model/mesh
mesh	model/mesh
silo	model/mesh
dae	model/vnd.collada+xml
dwf	model/vnd.dwf
gdl	model/vnd.gdl
gtw	model/vnd.gtw
mts	model/vnd.mts
vtu	model/vnd.vtu
wrl	model/vrml
vrml	model/vrml
x3db	model/x3d+binary
x3dbz	model/x3d+binary
x3dv	model/x3d+vrml
x3dvz	model/x3d+vrml
x3d	model/x3d+xml
x3dz	model/x3d+xml
appcache	text/cache-manifest
ics	text/calendar
ifb	text/calendar
css	text/css
csv	text/csv
html	text/html
htm	text/html
n3	text/n3
txt	text/plain
text	text/plain
conf	text/plain
def	text/plain
list	text/plain
log	text/plain
in	text/plain
dsc	text/prs.lines.tag
rtx	text/richtext
sgml	text/sgml
sgm	text/sgml
tsv	text/tab-separated-values
t	text/troff
tr	text/troff
roff	text/troff
man	text/troff
me	text/troff
ms	text/troff
ttl	text/turtle
uri	text/uri-list
uris	text/uri-list
urls	text/uri-list
vcard	text/vcard
curl	text/vnd.curl
dcurl	text/vnd.curl.dcurl
mcurl	text/vnd.curl.mcurl
scurl	text/vnd.curl.scurl
fly	text/vnd.fly
flx	text/vnd.fmi.flexstor
gv	text/vnd.graphviz
3dml	text/vnd.in3d.3dml
spot	text/vnd.in3d.spot
jad	text/vnd.sun.j2me.app-descriptor
wml	text/vnd.wap.wml
wmls	text/vnd.wap.wmlscript
s	text/x-asm
asm	text/x-asm
c	text/x-c
cc	text/x-c
cxx	text/x-c
cpp	text/x-c
h	text/x-c
hh	text/x-c
dic	text/x-c
f	text/x-fortran
for	text/x-fortran
f77	text/x-fortran
f90	text/x-fortran
java	text/x-java-source
nfo	text/x-nfo
opml	text/x-opml
p	text/x-pascal
pas	text/x-pascal
etx	text/x-setext
sfv	text/x-sfv
uu	text/x-uuencode
vcs	text/x-vcalendar
vcf	text/x-vcard
3gp	video/3gpp
3g2	video/3gpp2
h261	video/h261
h263	video/h263
h264	video/h264
jpgv	video/jpeg
jpm	video/jpm
jpgm	video/jpm
mj2	video/mj2
mjp2	video/mj2
mp4	video/mp4
mp4v	video/mp4
mpg4	video/mp4
mpeg	video/mpeg
mpg	video/mpeg
mpe	video/mpeg
m1v	video/mpeg
m2v	video/mpeg
ogv	video/ogg
qt	video/quicktime
mov	video/quicktime
uvh	video/vnd.dece.hd
uvvh	video/vnd.dece.hd
uvm	video/vnd.dece.mobile
uvvm	video/vnd.dece.mobile
uvp	video/vnd.dece.pd
uvvp	video/vnd.dece.pd
uvs	video/vnd.dece.sd
uvvs	video/vnd.dece.sd
uvv	video/vnd.dece.video
uvvv	video/vnd.dece.video
dvb	video/vnd.dvb.file
fvt	video/vnd.fvt
mxu	video/vnd.mpegurl
m4u	video/vnd.mpegurl
pyv	video/vnd.ms-playready.media.pyv
uvu	video/vnd.uvvu.mp4
uvvu	video/vnd.uvvu.mp4
viv	video/vnd.vivo
webm	video/webm
f4v	video/x-f4v
fli	video/x-fli
flv	video/x-flv
m4v	video/x-m4v
mkv	video/x-matroska
mk3d	video/x-matroska
mks	video/x-matroska
mng	video/x-mng
asf	video/x-ms-asf
asx	video/x-ms-asf
vob	video/x-ms-vob
wm	video/x-ms-wm
wmv	video/x-ms-wmv
wmx	video/x-ms-wmx
wvx	video/x-ms-wvx
avi	video/x-msvideo
movie	video/x-sgi-movie
smv	video/x-smv
ice	x-conference/x-cooltalk

如何获取文件的Content-Type

1、使用spring-web包下MediaTypeFactory

MediaTypeFactory是spring-web包下的工具类，需要在pom引用spring-web包，本例使用的是：

<dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
      <version> 2.2.4.RELEASE</version>
    </dependency>

从源码中可以看到MediaTypeFactory一共提供了三个对外方法，支持通过传入文件名或者Resource对象来获取Content-Type：

 public static Optional<MediaType> getMediaType(@Nullable Resource resource) {
        return Optional.ofNullable(resource).map(Resource::getFilename).flatMap(MediaTypeFactory::getMediaType);
    }

    public static Optional<MediaType> getMediaType(@Nullable String filename) {
        return getMediaTypes(filename).stream().findFirst();
    }

    public static List<MediaType> getMediaTypes(@Nullable String filename) {
        Optional var10000 = Optional.ofNullable(StringUtils.getFilenameExtension(filename)).map((s) -> {
            return s.toLowerCase(Locale.ENGLISH);
        });
        MultiValueMap var10001 = fileExtensionToMediaTypes;
        var10001.getClass();
        return (List)var10000.map(var10001::get).orElse(Collections.emptyList());
    }

我们用传入文件名的方式测试一下：

public static void main(String[] args) {
        MediaType mediaType = MediaTypeFactory.getMediaType("测试.pdf").get();
        String mediaTypeString = mediaType.toString();
        System.out.println(mediaTypeString);
    }

输出结果：

application/pdf

2、使用Apache Tika

Apache Tika 是一个内容分析工具包，可以检测上千种文件类型，并提取它们的元数据和文本。tika在设计上十分精巧，单一的接口使它易于使用，在搜索引擎索引，内容分析，翻译等诸多方面得到了广泛使用。

使用Apache Tika首先需要在pom引用：

 <dependency>
      <groupId>org.apache.tika</groupId>
      <artifactId>tika-core</artifactId>
      <version>1.28.4</version>
    </dependency>

获取Content-Type 主要是用到其中detect的通过源码我们可以得知（源码太长了就不放了）detect支持通过传入String（文件名）、URL、File、Path、byte[]、InputStream等类型来解析以获取Content-Type

我们用传入byte[]的方式测试一下：

public static void main(String[] args) {
        File file = new File("D:\\书籍\\电子书\\其它\\自然哲学的数学原理.pdf");
        byte[] fileContent = new byte[(int) file.length()];
        try (FileInputStream inputStream = new FileInputStream(file)) {
            inputStream.read(fileContent);
        } catch (IOException e) {
            e.printStackTrace();
        }
        Tika tika = new Tika();
        String mediaTypeString = tika.detect(fileContent);
        System.out.println(mediaTypeString);
    }

输出结果：

application/pdf

注意tika.detect返回的是String类型，如果想像第一种方式一样得到MediaType对象，还需要转换一下。

 MediaType.parseMediaType(mediaTypeString);