# 如何理解Content-Type（MIME）？(Python SDK) Content-Type（MIME）用于标识请求或响应中所携带数据的媒体类型，浏览器根据该参数来决定数据的打开方式。Content-Type多用于指定一些客户端自定义的文件，以及一些媒体文件的打开方式。 ![](https://support.huaweicloud.com/sdk-python-devg-obs/public_sys-resources/note_3.0-zh-cn.png) 如果您在上传Object时未指定Content-Type，SDK会根据指定Object名称的后缀名来判定文件类型并自动填充Content-Type。 #### 什么是Content-Type Content-Type用于指定Object的文件类型。内容类型决定浏览器将以什么形式、什么编码读取文件。如果没有指定文件类型，则根据文件的扩展名生成。如果文件没有扩展名，则文件类型的默认值application/octet-stream。 #### 常见的Content-Type 常见的Content-Type（MIME）列表如下： | 文件扩展名 | Content-Type | 文件扩展名 | Content-Type | |:---|:---|:---|:---| | .\*（二进制流，不知道下载文件类型） | application/octet-stream | .7z | application/x-7z-compressed | | .001 | application/x-001 | .301 | application/x-301 | | .323 | text/h323 | .906 | application/x-906 | | .907 | drawing/907 | .a11 | application/x-a11 | | .acp | audio/x-mei-aac | .ai | application/postscript | | .aif | audio/aiff | .aifc | audio/aiff | | .aiff | audio/aiff | .anv | application/x-anv | | .asa | text/asa | .asf | video/x-ms-asf | | .asp | text/asp | .asx | video/x-ms-asf | | .au | audio/basic | .avi | video/avi | | .awf | application/vnd.adobe.workflow | .biz | text/xml | | .bmp | image/bmp | .bot | application/x-bot | | .c4t | application/x-c4t | .c90 | application/x-c90 | | .cal | application/x-cals | .cat | application/vnd.ms-pki.seccat | | .cdf | application/x-netcdf | .cdr | application/x-cdr | | .cel | application/x-cel | .cer | application/x-x509-ca-cert | | .cg4 | application/x-g4 | .cgm | application/x-cgm | | .cit | application/x-cit | .class | java/\* | | .cml | text/xml | .cmp | application/x-cmp | | .cmx | application/x-cmx | .cot | application/x-cot | | .crl | application/pkix-crl | .crt | application/x-x509-ca-cert | | .csi | application/x-csi | .css | text/css | | .cut | application/x-cut | .dbf | application/x-dbf | | .dbm | application/x-dbm | .dbx | application/x-dbx | | .dcd | text/xml | .dcx | application/x-dcx | | .der | application/x-x509-ca-cert | .dgn | application/x-dgn | | .dib | application/x-dib | .dll | application/x-msdownload | | .doc | application/msword | .dot | application/msword | | .drw | application/x-drw | .dtd | text/xml | | .dwf | Model/vnd.dwf | .dwf | application/x-dwf | | .dwg | application/x-dwg | .dxb | application/x-dxb | | .dxf | application/x-dxf | .edn | application/vnd.adobe.edn | | .emf | application/x-emf | .eml | message/rfc822 | | .ent | text/xml | .epi | application/x-epi | | .eps | application/x-ps | .eps | application/postscript | | .etd | application/x-ebx | .exe | application/x-msdownload | | .fax | image/fax | .fdf | application/vnd.fdf | | .fif | application/fractals | .fo | text/xml | | .frm | application/x-frm | .g4 | application/x-g4 | | .gbr | application/x-gbr | . | application/x- | | .gif | image/gif | .gl2 | application/x-gl2 | | .gp4 | application/x-gp4 | .hgl | application/x-hgl | | .hmr | application/x-hmr | .hpg | application/x-hpgl | | .hpl | application/x-hpl | .hqx | application/mac-binhex40 | | .hrf | application/x-hrf | .hta | application/hta | | .htc | text/x-component | .htm | text/html | | .html | text/html | .htt | text/webviewhtml | | .htx | text/html | .icb | application/x-icb | | .ico | image/x-icon | .ico | image/x-icon | | .iff | application/x-iff | .ig4 | application/x-g4 | | .igs | application/x-igs | .iii | application/x-iphone | | .img | application/x-img | .ins | application/x-internet-signup | | .isp | application/x-internet-signup | .IVF | video/x-ivf | | .java | java/\* | .jfif | image/jpeg | | .jpe | image/jpeg | .jpe | application/x-jpe | | .jpeg | image/jpeg | .jpg | image/jpeg | | .jpg | application/x-jpg | .js | application/javascript | | .jsp | text/html | .la1 | audio/x-liquid-file | | .lar | application/x-laplayer-reg | .latex | application/x-latex | | .lavs | audio/x-liquid-secure | .lbm | application/x-lbm | | .lmsff | audio/x-la-lms | .ls | application/javascript | | .ltr | application/x-ltr | .m1v | video/x-mpeg | | .m2v | video/x-mpeg | .m3u | audio/mpegurl | | .m4e | video/mpeg4 | .mac | application/x-mac | | .man | application/x-troff-man | .math | text/xml | | .mdb | application/msaccess | .mdb | application/x-mdb | | .mfp | application/x-shockwave-flash | .mht | message/rfc822 | | .mhtml | message/rfc822 | .mi | application/x-mi | | .mid | audio/mid | .midi | audio/mid | | .mil | application/x-mil | .mml | text/xml | | .mnd | audio/x-musicnet-download | .mns | audio/x-musicnet-stream | | .mocha | application/javascript | .movie | video/x-sgi-movie | | .mp1 | audio/mp1 | .mp2 | audio/mp2 | | .mp2v | video/mpeg | .mp3 | audio/mp3 | | .mp4 | video/mp4 | .mpa | video/x-mpg | | .mpd | application/vnd.ms-project | .mpe | video/x-mpeg | | .mpeg | video/mpg | .mpg | video/mpg | | .mpga | audio/rn-mpeg | .mpp | application/vnd.ms-project | | .mps | video/x-mpeg | .mpt | application/vnd.ms-project | | .mpv | video/mpg | .mpv2 | video/mpeg | | .mpw | application/vnd.ms-project | .mpx | application/vnd.ms-project | | .mtx | text/xml | .mxp | application/x-mmxp | | .net | image/pnetvue | .nrf | application/x-nrf | | .nws | message/rfc822 | .odc | text/x-ms-odc | | .out | application/x-out | .p10 | application/pkcs10 | | .p12 | application/x-pkcs12 | .p7b | application/x-pkcs7-certificates | | .p7c | application/pkcs7-mime | .p7m | application/pkcs7-mime | | .p7r | application/x-pkcs7-certreqresp | .p7s | application/pkcs7-signature | | .pc5 | application/x-pc5 | .pci | application/x-pci | | .pcl | application/x-pcl | .pcx | application/x-pcx | | .pdf | application/pdf | .pdf | application/pdf | | .pdx | application/vnd.adobe.pdx | .pfx | application/x-pkcs12 | | .pgl | application/x-pgl | .pic | application/x-pic | | .pko | application/vnd.ms-pki.pko | .pl | application/x-perl | | .plg | text/html | .pls | audio/scpls | | .plt | application/x-plt | .png | image/png | | .png | application/x-png | .pot | application/vnd.ms-powerpoint | | .ppa | application/vnd.ms-powerpoint | .ppm | application/x-ppm | | .pps | application/vnd.ms-powerpoint | .ppt | application/vnd.ms-powerpoint | | .ppt | application/x-ppt | .pr | application/x-pr | | .prf | application/pics-rules | .prn | application/x-prn | | .prt | application/x-prt | .ps | application/x-ps | | .ps | application/postscript | .ptn | application/x-ptn | | .pwz | application/vnd.ms-powerpoint | .r3t | text/vnd.rn-realtext3d | | .ra | audio/vnd.rn-realaudio | .ram | audio/x-pn-realaudio | | .ras | application/x-ras | .rat | application/rat-file | | .rdf | text/xml | .rec | application/vnd.rn-recording | | .red | application/x-red | .rgb | application/x-rgb | | .rjs | application/vnd.rn-realsystem-rjs | .rjt | application/vnd.rn-realsystem-rjt | | .rlc | application/x-rlc | .rle | application/x-rle | | .rm | application/vnd.rn-realmedia | .rmf | application/vnd.adobe.rmf | | .rmi | audio/mid | .rmj | application/vnd.rn-realsystem-rmj | | .rmm | audio/x-pn-realaudio | .rmp | application/vnd.rn-rn_music_package | | .rms | application/vnd.rn-realmedia-secure | .rmvb | application/vnd.rn-realmedia-vbr | | .rmx | application/vnd.rn-realsystem-rmx | .rnx | application/vnd.rn-realplayer | | .rp | image/vnd.rn-realpix | .rpm | audio/x-pn-realaudio-plugin | | .rsml | application/vnd.rn-rsml | .rt | text/vnd.rn-realtext | | .rtf | application/msword | .rtf | application/x-rtf | | .rv | video/vnd.rn-realvideo | .sam | application/x-sam | | .sat | application/x-sat | .sdp | application/sdp | | .sdw | application/x-sdw | .sit | application/x-stuffit | | .slb | application/x-slb | .sld | application/x-sld | | .slk | drawing/x-slk | .smi | application/smil | | .smil | application/smil | .smk | application/x-smk | | .snd | audio/basic | .sol | text/plain | | .sor | text/plain | .spc | application/x-pkcs7-certificates | | .spl | application/futuresplash | .spp | text/xml | | .ssm | application/streamingmedia | .sst | application/vnd.ms-pki.certstore | | .stl | application/vnd.ms-pki.stl | .stm | text/html | | .sty | application/x-sty | .svg | text/xml | | .swf | application/x-shockwave-flash | .tdf | application/x-tdf | | .tg4 | application/x-tg4 | .tga | application/x-tga | | .tif | image/tiff | .tiff | image/tiff | | .ttf | font/otf | .tld | text/xml | | .top | drawing/x-top | .torrent | application/x-bittorrent | | .tsd | text/xml | .txt | text/plain | | .uin | application/x-icq | .uls | text/iuls | | .vcf | text/x-vcard | .vda | application/x-vda | | .vdx | application/vnd.visio | .vml | text/xml | | .vpg | application/x-vpeg005 | .vsd | application/vnd.visio | | .vsd | application/x-vsd | .vss | application/vnd.visio | | .vst | application/vnd.visio | .vst | application/x-vst | | .vsw | application/vnd.visio | .vsx | application/vnd.visio | | .vtx | application/vnd.visio | .vxml | text/xml | | .wav | audio/wav | .wax | audio/x-ms-wax | | .wb1 | application/x-wb1 | .wb2 | application/x-wb2 | | .wb3 | application/x-wb3 | .wbmp | image/vnd.wap.wbmp | | .wiz | application/msword | .wk3 | application/x-wk3 | | .wk4 | application/x-wk4 | .wkq | application/x-wkq | | .wks | application/x-wks | .wm | video/x-ms-wm | | .wma | audio/x-ms-wma | .wmd | application/x-ms-wmd | | .wmf | application/x-wmf | .wml | text/vnd.wap.wml | | .wmv | video/x-ms-wmv | .wmx | video/x-ms-wmx | | .wmz | application/x-ms-wmz | .wp6 | application/x-wp6 | | .wpd | application/x-wpd | .wpg | application/x-wpg | | .wpl | application/vnd.ms-wpl | .wq1 | application/x-wq1 | | .wr1 | application/x-wr1 | .wri | application/x-wri | | .wrk | application/x-wrk | .ws | application/x-ws | | .ws2 | application/x-ws | .wsc | text/scriptlet | | .wsdl | text/xml | .wvx | video/x-ms-wvx | | .xdp | application/vnd.adobe.xdp | .xdr | text/xml | | .xfd | application/vnd.adobe.xfd | .xfdf | application/vnd.adobe.xfdf | | .xhtml | text/html | .xlsx | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet | | .xls | application/x-xls | .xlw | application/x-xlw | | .xml | text/xml | .xpl | audio/scpls | | .xq | text/xml | .xql | text/xml | | .xquery | text/xml | .xsd | text/xml | | .xsl | text/xml | .xslt | text/xml | | .xwd | application/x-xwd | .x_b | application/x-x_b | | .sis | application/vnd.symbian.install | .sisx | application/vnd.symbian.install | | .x_t | application/x-x_t | .ipa | application/vnd.iphone | | .apk | application/vnd.android.package-archive | .xap | application/x-silverlight-app | | .zip | application/zip | .rar | application/x-rar-compressed | | .wasm | application/wasm | - | - |