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Content-xxx 又称 实体首部字段

常见的实体首部字段说明
Content-Type
Content-Length
Content-Disposition
  • 示例

常用 Content-Type

Content-Type用于定义网络文件的类型和网页的编码，每次传输都需要指定，

用来说明实体主体内容对象的媒体类型，遵循 type/subtype 的结构。熟悉 Content-Type，可以使开发的交流成本大大减少。

常见 Content-Type说明备注
text/plain纯文本
text/htmlhtml 格式
text/xmlxml 格式
常见的图片 Content-Type
image/jpegjpg
image/pngpng
image/gifgif
image/tifftif
application/jsonjson 格式
application/pdfpdf 格式
application/mswordword 格式
application/javascript
application/octet-stream二进制流数据常用于文件下载
application/x-www-form-urlencoded浏览器提交 form 时的默认Content-Type，
form 表单默认的提交数据的格式
application/xhtml+xmlXHTML 格式
application/xmlXML 数据格式
application/atom+xmlAtom XML 聚合格式
multipart/form-data通过表单上传文件时的Content-Type
  • 示例
Content-Type: application/octet-stream
  • 多个Content-Type
Content-Type: text/html; charset=utf-8
Content-Type: multipart/form-data; boundary=something

详细 Content-Type

https://www.runoob.com/http/http-content-type.html

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
.g/application/x-g/.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-v/
.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

Content-Length

示传输的实体主体的大小，单位为字节。

Content-Disposition

用来表示实体主体内容是用于显示在浏览器内或作为文件下载。

常用属性说明
formdata表示实体主体是 formdata 的形式
inline表示实体主体内容显示在浏览器内
attachment表示实体主体内容作为文件下载
filename表示文件编码格式或文件名例如 filename*=UTF-8 表示文件的编，filename=test.xlsx 表示下载时的文件名。
name表示 formdata 上传文件时，对应 type 为 file 的 input 的 name 值，例如 <input type="file" name="upload" />，此时对应的 name 则为 upload。

需要注意的是，对于 Content-Disposition 的 formdata 它仅仅是一个信息提示的作用，并不是实现实体主体内容为 formdata，这是 Content-Type 负责的。

  • 示例
Content-Disposition: attachment;filename=test.xlsx;filename*=UTF-8

以上Content-Disposition可以告知浏览器：

  • 告知浏览器需要将二进制文件作为附件下载
  • 附件的文件名为 test.xlsx
  • 附件对应的编码为 UTF-8