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      HTTP content-type

      HTTP content-type

      Content-Type(内容类型),一般是指网页中存在的 Content-Type,用于定义网络文件的类型和网页的编码,决定浏览器将以什么形式、什么编码读取这个文件,这就是经常看到一些 PHP 网页点击的结果却是下载一个文件或一张图片的原因。

      Content-Type 标头告诉客户端实际返回的内容的内容类型。

      语法格式:

      Content-Type: text/html; charset=utf-8
      Content-Type: multipart/form-data; boundary=something
      

      实例:

      常见的媒体格式类型如下:

      • text/html : HTML格式
      • text/plain :纯文本格式
      • text/xml : XML格式
      • image/gif :gif图片格式
      • image/jpeg :jpg图片格式
      • image/png:png图片格式

      以application开头的媒体格式类型:

      • application/xhtml+xml :XHTML格式
      • application/xml: XML数据格式
      • application/atom+xml :Atom XML聚合格式
      • application/json: JSON数据格式
      • application/pdf:pdf格式
      • application/msword : Word文档格式
      • application/octet-stream : 二进制流数据(如常见的文件下载)
      • application/x-www-form-urlencoded :

        中默认的encType,form表单数据被编码为key/value格式发送到服务器(表单默认的提交数据的格式)

      另外一种常见的媒体格式是上传文件之时使用的:

      • multipart/form-data : 需要在表单中进行文件上传时,就需要使用该格式

      HTTP content-type 对照表

      文件扩展名Content-Type(Mime-Type)文件扩展名Content-Type(Mime-Type)
      .*( 二进制流,不知道下载文件类型)application/octet-stream.tifimage/tiff
      .001application/x-001.301application/x-301
      .323text/h323.906application/x-906
      .907drawing/907.a11application/x-a11
      .acpaudio/x-mei-aac.aiapplication/postscript
      .aifaudio/aiff.aifcaudio/aiff
      .aiffaudio/aiff.anvapplication/x-anv
      .asatext/asa.asfvideo/x-ms-asf
      .asptext/asp.asxvideo/x-ms-asf
      .auaudio/basic.avivideo/avi
      .awfapplication/vnd.adobe.workflow.biztext/xml
      .bmpapplication/x-bmp.botapplication/x-bot
      .c4tapplication/x-c4t.c90application/x-c90
      .calapplication/x-cals.catapplication/vnd.ms-pki.seccat
      .cdfapplication/x-netcdf.cdrapplication/x-cdr
      .celapplication/x-cel.cerapplication/x-x509-ca-cert
      .cg4application/x-g4.cgmapplication/x-cgm
      .citapplication/x-cit.classjava/*
      .cmltext/xml.cmpapplication/x-cmp
      .cmxapplication/x-cmx.cotapplication/x-cot
      .crlapplication/pkix-crl.crtapplication/x-x509-ca-cert
      .csiapplication/x-csi.csstext/css
      .cutapplication/x-cut.dbfapplication/x-dbf
      .dbmapplication/x-dbm.dbxapplication/x-dbx
      .dcdtext/xml.dcxapplication/x-dcx
      .derapplication/x-x509-ca-cert.dgnapplication/x-dgn
      .dibapplication/x-dib.dllapplication/x-msdownload
      .docapplication/msword.dotapplication/msword
      .drwapplication/x-drw.dtdtext/xml
      .dwfModel/vnd.dwf.dwfapplication/x-dwf
      .dwgapplication/x-dwg.dxbapplication/x-dxb
      .dxfapplication/x-dxf.ednapplication/vnd.adobe.edn
      .emfapplication/x-emf.emlmessage/rfc822
      .enttext/xml.epiapplication/x-epi
      .epsapplication/x-ps.epsapplication/postscript
      .etdapplication/x-ebx.exeapplication/x-msdownload
      .faximage/fax.fdfapplication/vnd.fdf
      .fifapplication/fractals.fotext/xml
      .frmapplication/x-frm.g4application/x-g4
      .gbrapplication/x-gbr.application/x-
      .gifimage/gif.gl2application/x-gl2
      .gp4application/x-gp4.hglapplication/x-hgl
      .hmrapplication/x-hmr.hpgapplication/x-hpgl
      .hplapplication/x-hpl.hqxapplication/mac-binhex40
      .hrfapplication/x-hrf.htaapplication/hta
      .htctext/x-component.htmtext/html
      .htmltext/html.htttext/webviewhtml
      .htxtext/html.icbapplication/x-icb
      .icoimage/x-icon.icoapplication/x-ico
      .iffapplication/x-iff.ig4application/x-g4
      .igsapplication/x-igs.iiiapplication/x-iphone
      .imgapplication/x-img.insapplication/x-internet-signup
      .ispapplication/x-internet-signup.IVFvideo/x-ivf
      .javajava/*.jfifimage/jpeg
      .jpeimage/jpeg.jpeapplication/x-jpe
      .jpegimage/jpeg.jpgimage/jpeg
      .jpgapplication/x-jpg.jsapplication/x-javascript
      .jsptext/html.la1audio/x-liquid-file
      .larapplication/x-laplayer-reg.latexapplication/x-latex
      .lavsaudio/x-liquid-secure.lbmapplication/x-lbm
      .lmsffaudio/x-la-lms.lsapplication/x-javascript
      .ltrapplication/x-ltr.m1vvideo/x-mpeg
      .m2vvideo/x-mpeg.m3uaudio/mpegurl
      .m4evideo/mpeg4.macapplication/x-mac
      .manapplication/x-troff-man.mathtext/xml
      .mdbapplication/msaccess.mdbapplication/x-mdb
      .mfpapplication/x-shockwave-flash.mhtmessage/rfc822
      .mhtmlmessage/rfc822.miapplication/x-mi
      .midaudio/mid.midiaudio/mid
      .milapplication/x-mil.mmltext/xml
      .mndaudio/x-musicnet-download.mnsaudio/x-musicnet-stream
      .mochaapplication/x-javascript.movievideo/x-sgi-movie
      .mp1audio/mp1.mp2audio/mp2
      .mp2vvideo/mpeg.mp3audio/mp3
      .mp4video/mpeg4.mpavideo/x-mpg
      .mpdapplication/vnd.ms-project.mpevideo/x-mpeg
      .mpegvideo/mpg.mpgvideo/mpg
      .mpgaaudio/rn-mpeg.mppapplication/vnd.ms-project
      .mpsvideo/x-mpeg.mptapplication/vnd.ms-project
      .mpvvideo/mpg.mpv2video/mpeg
      .mpwapplication/vnd.ms-project.mpxapplication/vnd.ms-project
      .mtxtext/xml.mxpapplication/x-mmxp
      .netimage/pnetvue.nrfapplication/x-nrf
      .nwsmessage/rfc822.odctext/x-ms-odc
      .outapplication/x-out.p10application/pkcs10
      .p12application/x-pkcs12.p7bapplication/x-pkcs7-certificates
      .p7capplication/pkcs7-mime.p7mapplication/pkcs7-mime
      .p7rapplication/x-pkcs7-certreqresp.p7sapplication/pkcs7-signature
      .pc5application/x-pc5.pciapplication/x-pci
      .pclapplication/x-pcl.pcxapplication/x-pcx
      .pdfapplication/pdf.pdfapplication/pdf
      .pdxapplication/vnd.adobe.pdx.pfxapplication/x-pkcs12
      .pglapplication/x-pgl.picapplication/x-pic
      .pkoapplication/vnd.ms-pki.pko.plapplication/x-perl
      .plgtext/html.plsaudio/scpls
      .pltapplication/x-plt.pngimage/png
      .pngapplication/x-png.potapplication/vnd.ms-powerpoint
      .ppaapplication/vnd.ms-powerpoint.ppmapplication/x-ppm
      .ppsapplication/vnd.ms-powerpoint.pptapplication/vnd.ms-powerpoint
      .pptapplication/x-ppt.prapplication/x-pr
      .prfapplication/pics-rules.prnapplication/x-prn
      .prtapplication/x-prt.psapplication/x-ps
      .psapplication/postscript.ptnapplication/x-ptn
      .pwzapplication/vnd.ms-powerpoint.r3ttext/vnd.rn-realtext3d
      .raaudio/vnd.rn-realaudio.ramaudio/x-pn-realaudio
      .rasapplication/x-ras.ratapplication/rat-file
      .rdftext/xml.recapplication/vnd.rn-recording
      .redapplication/x-red.rgbapplication/x-rgb
      .rjsapplication/vnd.rn-realsystem-rjs.rjtapplication/vnd.rn-realsystem-rjt
      .rlcapplication/x-rlc.rleapplication/x-rle
      .rmapplication/vnd.rn-realmedia.rmfapplication/vnd.adobe.rmf
      .rmiaudio/mid.rmjapplication/vnd.rn-realsystem-rmj
      .rmmaudio/x-pn-realaudio.rmpapplication/vnd.rn-rn_music_package
      .rmsapplication/vnd.rn-realmedia-secure.rmvbapplication/vnd.rn-realmedia-vbr
      .rmxapplication/vnd.rn-realsystem-rmx.rnxapplication/vnd.rn-realplayer
      .rpimage/vnd.rn-realpix.rpmaudio/x-pn-realaudio-plugin
      .rsmlapplication/vnd.rn-rsml.rttext/vnd.rn-realtext
      .rtfapplication/msword.rtfapplication/x-rtf
      .rvvideo/vnd.rn-realvideo.samapplication/x-sam
      .satapplication/x-sat.sdpapplication/sdp
      .sdwapplication/x-sdw.sitapplication/x-stuffit
      .slbapplication/x-slb.sldapplication/x-sld
      .slkdrawing/x-slk.smiapplication/smil
      .smilapplication/smil.smkapplication/x-smk
      .sndaudio/basic.soltext/plain
      .sortext/plain.spcapplication/x-pkcs7-certificates
      .splapplication/futuresplash.spptext/xml
      .ssmapplication/streamingmedia.sstapplication/vnd.ms-pki.certstore
      .stlapplication/vnd.ms-pki.stl.stmtext/html
      .styapplication/x-sty.svgtext/xml
      .swfapplication/x-shockwave-flash.tdfapplication/x-tdf
      .tg4application/x-tg4.tgaapplication/x-tga
      .tifimage/tiff.tifapplication/x-tif
      .tiffimage/tiff.tldtext/xml
      .topdrawing/x-top.torrentapplication/x-bittorrent
      .tsdtext/xml.txttext/plain
      .uinapplication/x-icq.ulstext/iuls
      .vcftext/x-vcard.vdaapplication/x-vda
      .vdxapplication/vnd.visio.vmltext/xml
      .vpgapplication/x-vpeg005.vsdapplication/vnd.visio
      .vsdapplication/x-vsd.vssapplication/vnd.visio
      .vstapplication/vnd.visio.vstapplication/x-vst
      .vswapplication/vnd.visio.vsxapplication/vnd.visio
      .vtxapplication/vnd.visio.vxmltext/xml
      .wavaudio/wav.waxaudio/x-ms-wax
      .wb1application/x-wb1.wb2application/x-wb2
      .wb3application/x-wb3.wbmpimage/vnd.wap.wbmp
      .wizapplication/msword.wk3application/x-wk3
      .wk4application/x-wk4.wkqapplication/x-wkq
      .wksapplication/x-wks.wmvideo/x-ms-wm
      .wmaaudio/x-ms-wma.wmdapplication/x-ms-wmd
      .wmfapplication/x-wmf.wmltext/vnd.wap.wml
      .wmvvideo/x-ms-wmv.wmxvideo/x-ms-wmx
      .wmzapplication/x-ms-wmz.wp6application/x-wp6
      .wpdapplication/x-wpd.wpgapplication/x-wpg
      .wplapplication/vnd.ms-wpl.wq1application/x-wq1
      .wr1application/x-wr1.wriapplication/x-wri
      .wrkapplication/x-wrk.wsapplication/x-ws
      .ws2application/x-ws.wsctext/scriptlet
      .wsdltext/xml.wvxvideo/x-ms-wvx
      .xdpapplication/vnd.adobe.xdp.xdrtext/xml
      .xfdapplication/vnd.adobe.xfd.xfdfapplication/vnd.adobe.xfdf
      .xhtmltext/html.xlsapplication/vnd.ms-excel
      .xlsapplication/x-xls.xlwapplication/x-xlw
      .xmltext/xml.xplaudio/scpls
      .xqtext/xml.xqltext/xml
      .xquerytext/xml.xsdtext/xml
      .xsltext/xml.xslttext/xml
      .xwdapplication/x-xwd.x_bapplication/x-x_b
      .sisapplication/vnd.symbian.install.sisxapplication/vnd.symbian.install
      .x_tapplication/x-x_t.ipaapplication/vnd.iphone
      .apkapplication/vnd.android.package-archive.xapapplication/x-silverlight-app
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