我正在标准库（如 apache commons、jax、jboss、javax）中寻找列出所有标准 mime 类型（又名内容类型）值的接口或枚举。
这个接口不应该被其他类拖得太深，这会导致难以将整个一堆作为 gwt 源代码包含在内。
例如
interface ContentType{
String JSON = "Application/JSON";
blah ... blah ...
}
或者，
enum ContentType{
JSON("Application/JSON"),
blah ... blah ...
}
【问题讨论】：
标签： java gwt mime-types content-type guava
来自https://docs.oracle.com/javaee/7/api/javax/ws/rs/core/MediaType.html：
staticjava.lang.String APPLICATION_ATOM_XML "application/atom+xml"
staticMediaType APPLICATION_ATOM_XML_TYPE "application/atom+xml"
staticjava.lang.String APPLICATION_FORM_URLENCODED "application/x-www-form-urlencoded"
staticMediaType APPLICATION_FORM_URLENCODED_TYPE "application/x-www-form-urlencoded"
staticjava.lang.String APPLICATION_JSON "application/json"
staticMediaType APPLICATION_JSON_TYPE "application/json"
staticjava.lang.String APPLICATION_OCTET_STREAM "application/octet-stream"
staticMediaType APPLICATION_OCTET_STREAM_TYPE "application/octet-stream"
staticjava.lang.String APPLICATION_SVG_XML "application/svg+xml"
staticMediaType APPLICATION_SVG_XML_TYPE "application/svg+xml"
staticjava.lang.String APPLICATION_XHTML_XML "application/xhtml+xml"
staticMediaType APPLICATION_XHTML_XML_TYPE "application/xhtml+xml"
staticjava.lang.String APPLICATION_XML "application/xml"
staticMediaType APPLICATION_XML_TYPE "application/xml"
staticjava.lang.String MEDIA_TYPE_WILDCARD The value of a type or subtype wildcard: "*"
staticjava.lang.String MULTIPART_FORM_DATA "multipart/form-data"
staticMediaType MULTIPART_FORM_DATA_TYPE "multipart/form-data"
staticjava.lang.String TEXT_HTML "text/html"
staticMediaType TEXT_HTML_TYPE "text/html"
staticjava.lang.String TEXT_PLAIN "text/plain"
staticMediaType TEXT_PLAIN_TYPE "text/plain"
staticjava.lang.String TEXT_XML "text/xml"
staticMediaType TEXT_XML_TYPE "text/xml"
staticjava.lang.String WILDCARD "*/*"
staticMediaType WILDCARD_TYPE "*/*"
【讨论】：
如果您使用的是Spring Framework，那么有一个MediaType 类用于常见的内容类型：
MediaType.TEXT_HTML
MediaType.TEXT_PLAIN
MediaType.TEXT_XML
MediaType.APPLICATION_JSON
MediaType.IMAGE_JPEG
...
【讨论】：
APPLICATION_ZIP
为此我们有一个Guava 类：com.google.common.net.MediaType。
【讨论】：
com.google.common.net.MediaType 中没有定义字符串常量，因为MediaType.toString() 不是编译时常量，因此不能在注释中使用
现在还有来自包org.apache.httpcomponents.httpcore 的类org.apache.http.entity.ContentType，从4.2 开始。
【讨论】：
application/pdf mime 类型之前，我一直使用它。不幸的是，这个类没有 pdf 的常量 :(
javax.ws.rs.core.MediaType 来自JAX-RS
【讨论】：
Java 7 来救援！
您可以传递文件或文件名，它将返回 MIME 类型。
String mimeType = MimetypesFileTypeMap
.getDefaultFileTypeMap()
.getContentType(attachment.getFileName());
http://docs.oracle.com/javase/7/docs/api/javax/activation/MimetypesFileTypeMap.html
【讨论】：
androidannotations 中还有一个 MediaType 类，以防您想与 android 一起使用！见here。
【讨论】：
正如上面的答案所指出的，您可以使用具有所需常量的javax.ws.rs.core.MediaType。
我还想分享一个非常酷且方便的链接，我发现它在一个地方提供了对所有 Javax 常量的引用 - https://docs.oracle.com/javaee/7/api/constant-values.html。
【讨论】：
如果您使用的是 android，则有多种选择，其中只有第一个是一种“枚举”：
HTTP（在 API 22 中已弃用），例如HTTP.PLAIN_TEXT_TYPE 或MimeTypeMap，例如final String mime = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);FileProvider.getType()。URLConnection 提供以下方法：
例如
@Override
public String getType(Uri uri) {
return URLConnection.getFileNameMap().getContentTypeFor(
uri.getLastPathSegment());
}
【讨论】：
我用一个静态类解决了这个问题：
@SuppressWarnings("serial")
public class MimeTypes {
private static final HashMap<String, String> mimeTypes;
static {
mimeTypes = new HashMap<String, String>() {
{
put(".323", "text/h323");
put(".3g2", "video/3gpp2");
put(".3gp", "video/3gpp");
put(".3gp2", "video/3gpp2");
put(".3gpp", "video/3gpp");
put(".7z", "application/x-7z-compressed");
put(".aa", "audio/audible");
put(".AAC", "audio/aac");
put(".aaf", "application/octet-stream");
put(".aax", "audio/vnd.audible.aax");
put(".ac3", "audio/ac3");
put(".aca", "application/octet-stream");
put(".accda", "application/msaccess.addin");
put(".accdb", "application/msaccess");
put(".accdc", "application/msaccess.cab");
put(".accde", "application/msaccess");
put(".accdr", "application/msaccess.runtime");
put(".accdt", "application/msaccess");
put(".accdw", "application/msaccess.webapplication");
put(".accft", "application/msaccess.ftemplate");
put(".acx", "application/internet-property-stream");
put(".AddIn", "text/xml");
put(".ade", "application/msaccess");
put(".adobebridge", "application/x-bridge-url");
put(".adp", "application/msaccess");
put(".ADT", "audio/vnd.dlna.adts");
put(".ADTS", "audio/aac");
put(".afm", "application/octet-stream");
put(".ai", "application/postscript");
put(".aif", "audio/x-aiff");
put(".aifc", "audio/aiff");
put(".aiff", "audio/aiff");
put(".air", "application/vnd.adobe.air-application-installer-package+zip");
put(".amc", "application/x-mpeg");
put(".application", "application/x-ms-application");
put(".art", "image/x-jg");
put(".asa", "application/xml");
put(".asax", "application/xml");
put(".ascx", "application/xml");
put(".asd", "application/octet-stream");
put(".asf", "video/x-ms-asf");
put(".ashx", "application/xml");
put(".asi", "application/octet-stream");
put(".asm", "text/plain");
put(".asmx", "application/xml");
put(".aspx", "application/xml");
put(".asr", "video/x-ms-asf");
put(".asx", "video/x-ms-asf");
put(".atom", "application/atom+xml");
put(".au", "audio/basic");
put(".avi", "video/x-msvideo");
put(".axs", "application/olescript");
put(".bas", "text/plain");
put(".bcpio", "application/x-bcpio");
put(".bin", "application/octet-stream");
put(".bmp", "image/bmp");
put(".c", "text/plain");
put(".cab", "application/octet-stream");
put(".caf", "audio/x-caf");
put(".calx", "application/vnd.ms-office.calx");
put(".cat", "application/vnd.ms-pki.seccat");
put(".cc", "text/plain");
put(".cd", "text/plain");
put(".cdda", "audio/aiff");
put(".cdf", "application/x-cdf");
put(".cer", "application/x-x509-ca-cert");
put(".chm", "application/octet-stream");
put(".class", "application/x-java-applet");
put(".clp", "application/x-msclip");
put(".cmx", "image/x-cmx");
put(".cnf", "text/plain");
put(".cod", "image/cis-cod");
put(".config", "application/xml");
put(".contact", "text/x-ms-contact");
put(".coverage", "application/xml");
put(".cpio", "application/x-cpio");
put(".cpp", "text/plain");
put(".crd", "application/x-mscardfile");
put(".crl", "application/pkix-crl");
put(".crt", "application/x-x509-ca-cert");
put(".cs", "text/plain");
put(".csdproj", "text/plain");
put(".csh", "application/x-csh");
put(".csproj", "text/plain");
put(".css", "text/css");
put(".csv", "text/csv");
put(".cur", "application/octet-stream");
put(".cxx", "text/plain");
put(".dat", "application/octet-stream");
put(".datasource", "application/xml");
put(".dbproj", "text/plain");
put(".dcr", "application/x-director");
put(".def", "text/plain");
put(".deploy", "application/octet-stream");
put(".der", "application/x-x509-ca-cert");
put(".dgml", "application/xml");
put(".dib", "image/bmp");
put(".dif", "video/x-dv");
put(".dir", "application/x-director");
put(".disco", "text/xml");
put(".dll", "application/x-msdownload");
put(".dll.config", "text/xml");
put(".dlm", "text/dlm");
put(".doc", "application/msword");
put(".docm", "application/vnd.ms-word.document.macroEnabled.12");
put(".docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document");
put(".dot", "application/msword");
put(".dotm", "application/vnd.ms-word.template.macroEnabled.12");
put(".dotx", "application/vnd.openxmlformats-officedocument.wordprocessingml.template");
put(".dsp", "application/octet-stream");
put(".dsw", "text/plain");
put(".dtd", "text/xml");
put(".dtsConfig", "text/xml");
put(".dv", "video/x-dv");
put(".dvi", "application/x-dvi");
put(".dwf", "drawing/x-dwf");
put(".dwp", "application/octet-stream");
put(".dxr", "application/x-director");
put(".eml", "message/rfc822");
put(".emz", "application/octet-stream");
put(".eot", "application/octet-stream");
put(".eps", "application/postscript");
put(".etl", "application/etl");
put(".etx", "text/x-setext");
put(".evy", "application/envoy");
put(".exe", "application/octet-stream");
put(".exe.config", "text/xml");
put(".fdf", "application/vnd.fdf");
put(".fif", "application/fractals");
put(".filters", "Application/xml");
put(".fla", "application/octet-stream");
put(".flr", "x-world/x-vrml");
put(".flv", "video/x-flv");
put(".fsscript", "application/fsharp-script");
put(".fsx", "application/fsharp-script");
put(".generictest", "application/xml");
put(".gif", "image/gif");
put(".group", "text/x-ms-group");
put(".gsm", "audio/x-gsm");
put(".gtar", "application/x-gtar");
put(".gz", "application/x-gzip");
put(".h", "text/plain");
put(".hdf", "application/x-hdf");
put(".hdml", "text/x-hdml");
put(".hhc", "application/x-oleobject");
put(".hhk", "application/octet-stream");
put(".hhp", "application/octet-stream");
put(".hlp", "application/winhlp");
put(".hpp", "text/plain");
put(".hqx", "application/mac-binhex40");
put(".hta", "application/hta");
put(".htc", "text/x-component");
put(".htm", "text/html");
put(".html", "text/html");
put(".htt", "text/webviewhtml");
put(".hxa", "application/xml");
put(".hxc", "application/xml");
put(".hxd", "application/octet-stream");
put(".hxe", "application/xml");
put(".hxf", "application/xml");
put(".hxh", "application/octet-stream");
put(".hxi", "application/octet-stream");
put(".hxk", "application/xml");
put(".hxq", "application/octet-stream");
put(".hxr", "application/octet-stream");
put(".hxs", "application/octet-stream");
put(".hxt", "text/html");
put(".hxv", "application/xml");
put(".hxw", "application/octet-stream");
put(".hxx", "text/plain");
put(".i", "text/plain");
put(".ico", "image/x-icon");
put(".ics", "application/octet-stream");
put(".idl", "text/plain");
put(".ief", "image/ief");
put(".iii", "application/x-iphone");
put(".inc", "text/plain");
put(".inf", "application/octet-stream");
put(".inl", "text/plain");
put(".ins", "application/x-internet-signup");
put(".ipa", "application/x-itunes-ipa");
put(".ipg", "application/x-itunes-ipg");
put(".ipproj", "text/plain");
put(".ipsw", "application/x-itunes-ipsw");
put(".iqy", "text/x-ms-iqy");
put(".isp", "application/x-internet-signup");
put(".ite", "application/x-itunes-ite");
put(".itlp", "application/x-itunes-itlp");
put(".itms", "application/x-itunes-itms");
put(".itpc", "application/x-itunes-itpc");
put(".IVF", "video/x-ivf");
put(".jar", "application/java-archive");
put(".java", "application/octet-stream");
put(".jck", "application/liquidmotion");
put(".jcz", "application/liquidmotion");
put(".jfif", "image/pjpeg");
put(".jnlp", "application/x-java-jnlp-file");
put(".jpb", "application/octet-stream");
put(".jpe", "image/jpeg");
put(".jpeg", "image/jpeg");
put(".jpg", "image/jpeg");
put(".js", "application/x-javascript");
put(".json", "application/json");
put(".jsx", "text/jscript");
put(".jsxbin", "text/plain");
put(".latex", "application/x-latex");
put(".library-ms", "application/windows-library+xml");
put(".lit", "application/x-ms-reader");
put(".loadtest", "application/xml");
put(".lpk", "application/octet-stream");
put(".lsf", "video/x-la-asf");
put(".lst", "text/plain");
put(".lsx", "video/x-la-asf");
put(".lzh", "application/octet-stream");
put(".m13", "application/x-msmediaview");
put(".m14", "application/x-msmediaview");
put(".m1v", "video/mpeg");
put(".m2t", "video/vnd.dlna.mpeg-tts");
put(".m2ts", "video/vnd.dlna.mpeg-tts");
put(".m2v", "video/mpeg");
put(".m3u", "audio/x-mpegurl");
put(".m3u8", "audio/x-mpegurl");
put(".m4a", "audio/m4a");
put(".m4b", "audio/m4b");
put(".m4p", "audio/m4p");
put(".m4r", "audio/x-m4r");
put(".m4v", "video/x-m4v");
put(".mac", "image/x-macpaint");
put(".mak", "text/plain");
put(".man", "application/x-troff-man");
put(".manifest", "application/x-ms-manifest");
put(".map", "text/plain");
put(".master", "application/xml");
put(".mda", "application/msaccess");
put(".mdb", "application/x-msaccess");
put(".mde", "application/msaccess");
put(".mdp", "application/octet-stream");
put(".me", "application/x-troff-me");
put(".mfp", "application/x-shockwave-flash");
put(".mht", "message/rfc822");
put(".mhtml", "message/rfc822");
put(".mid", "audio/mid");
put(".midi", "audio/mid");
put(".mix", "application/octet-stream");
put(".mk", "text/plain");
put(".mmf", "application/x-smaf");
put(".mno", "text/xml");
put(".mny", "application/x-msmoney");
put(".mod", "video/mpeg");
put(".mov", "video/quicktime");
put(".movie", "video/x-sgi-movie");
put(".mp2", "video/mpeg");
put(".mp2v", "video/mpeg");
put(".mp3", "audio/mpeg");
put(".mp4", "video/mp4");
put(".mp4v", "video/mp4");
put(".mpa", "video/mpeg");
put(".mpe", "video/mpeg");
put(".mpeg", "video/mpeg");
put(".mpf", "application/vnd.ms-mediapackage");
put(".mpg", "video/mpeg");
put(".mpp", "application/vnd.ms-project");
put(".mpv2", "video/mpeg");
put(".mqv", "video/quicktime");
put(".ms", "application/x-troff-ms");
put(".msi", "application/octet-stream");
put(".mso", "application/octet-stream");
put(".mts", "video/vnd.dlna.mpeg-tts");
put(".mtx", "application/xml");
put(".mvb", "application/x-msmediaview");
put(".mvc", "application/x-miva-compiled");
put(".mxp", "application/x-mmxp");
put(".nc", "application/x-netcdf");
put(".nsc", "video/x-ms-asf");
put(".nws", "message/rfc822");
put(".ocx", "application/octet-stream");
put(".oda", "application/oda");
put(".odc", "text/x-ms-odc");
put(".odh", "text/plain");
put(".odl", "text/plain");
put(".odp", "application/vnd.oasis.opendocument.presentation");
put(".ods", "application/oleobject");
put(".odt", "application/vnd.oasis.opendocument.text");
put(".one", "application/onenote");
put(".onea", "application/onenote");
put(".onepkg", "application/onenote");
put(".onetmp", "application/onenote");
put(".onetoc", "application/onenote");
put(".onetoc2", "application/onenote");
put(".orderedtest", "application/xml");
put(".osdx", "application/opensearchdescription+xml");
put(".p10", "application/pkcs10");
put(".p12", "application/x-pkcs12");
put(".p7b", "application/x-pkcs7-certificates");
put(".p7c", "application/pkcs7-mime");
put(".p7m", "application/pkcs7-mime");
put(".p7r", "application/x-pkcs7-certreqresp");
put(".p7s", "application/pkcs7-signature");
put(".pbm", "image/x-portable-bitmap");
put(".pcast", "application/x-podcast");
put(".pct", "image/pict");
put(".pcx", "application/octet-stream");
put(".pcz", "application/octet-stream");
put(".pdf", "application/pdf");
put(".pfb", "application/octet-stream");
put(".pfm", "application/octet-stream");
put(".pfx", "application/x-pkcs12");
put(".pgm", "image/x-portable-graymap");
put(".pic", "image/pict");
put(".pict", "image/pict");
put(".pkgdef", "text/plain");
put(".pkgundef", "text/plain");
put(".pko", "application/vnd.ms-pki.pko");
put(".pls", "audio/scpls");
put(".pma", "application/x-perfmon");
put(".pmc", "application/x-perfmon");
put(".pml", "application/x-perfmon");
put(".pmr", "application/x-perfmon");
put(".pmw", "application/x-perfmon");
put(".png", "image/png");
put(".pnm", "image/x-portable-anymap");
put(".pnt", "image/x-macpaint");
put(".pntg", "image/x-macpaint");
put(".pnz", "image/png");
put(".pot", "application/vnd.ms-powerpoint");
put(".potm", "application/vnd.ms-powerpoint.template.macroEnabled.12");
put(".potx", "application/vnd.openxmlformats-officedocument.presentationml.template");
put(".ppa", "application/vnd.ms-powerpoint");
put(".ppam", "application/vnd.ms-powerpoint.addin.macroEnabled.12");
put(".ppm", "image/x-portable-pixmap");
put(".pps", "application/vnd.ms-powerpoint");
put(".ppsm", "application/vnd.ms-powerpoint.slideshow.macroEnabled.12");
put(".ppsx", "application/vnd.openxmlformats-officedocument.presentationml.slideshow");
put(".ppt", "application/vnd.ms-powerpoint");
put(".pptm", "application/vnd.ms-powerpoint.presentation.macroEnabled.12");
put(".pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation");
put(".prf", "application/pics-rules");
put(".prm", "application/octet-stream");
put(".prx", "application/octet-stream");
put(".ps", "application/postscript");
put(".psc1", "application/PowerShell");
put(".psd", "application/octet-stream");
put(".psess", "application/xml");
put(".psm", "application/octet-stream");
put(".psp", "application/octet-stream");
put(".pub", "application/x-mspublisher");
put(".pwz", "application/vnd.ms-powerpoint");
put(".qht", "text/x-html-insertion");
put(".qhtm", "text/x-html-insertion");
put(".qt", "video/quicktime");
put(".qti", "image/x-quicktime");
put(".qtif", "image/x-quicktime");
put(".qtl", "application/x-quicktimeplayer");
put(".qxd", "application/octet-stream");
put(".ra", "audio/x-pn-realaudio");
put(".ram", "audio/x-pn-realaudio");
put(".rar", "application/octet-stream");
put(".ras", "image/x-cmu-raster");
put(".rat", "application/rat-file");
put(".rc", "text/plain");
put(".rc2", "text/plain");
put(".rct", "text/plain");
put(".rdlc", "application/xml");
put(".resx", "application/xml");
put(".rf", "image/vnd.rn-realflash");
put(".rgb", "image/x-rgb");
put(".rgs", "text/plain");
put(".rm", "application/vnd.rn-realmedia");
put(".rmi", "audio/mid");
put(".rmp", "application/vnd.rn-rn_music_package");
put(".roff", "application/x-troff");
put(".rpm", "audio/x-pn-realaudio-plugin");
put(".rqy", "text/x-ms-rqy");
put(".rtf", "application/rtf");
put(".rtx", "text/richtext");
put(".ruleset", "application/xml");
put(".s", "text/plain");
put(".safariextz", "application/x-safari-safariextz");
put(".scd", "application/x-msschedule");
put(".sct", "text/scriptlet");
put(".sd2", "audio/x-sd2");
put(".sdp", "application/sdp");
put(".sea", "application/octet-stream");
put(".searchConnector-ms", "application/windows-search-connector+xml");
put(".setpay", "application/set-payment-initiation");
put(".setreg", "application/set-registration-initiation");
put(".settings", "application/xml");
put(".sgimb", "application/x-sgimb");
put(".sgml", "text/sgml");
put(".sh", "application/x-sh");
put(".shar", "application/x-shar");
put(".shtml", "text/html");
put(".sit", "application/x-stuffit");
put(".sitemap", "application/xml");
put(".skin", "application/xml");
put(".sldm", "application/vnd.ms-powerpoint.slide.macroEnabled.12");
put(".sldx", "application/vnd.openxmlformats-officedocument.presentationml.slide");
put(".slk", "application/vnd.ms-excel");
put(".sln", "text/plain");
put(".slupkg-ms", "application/x-ms-license");
put(".smd", "audio/x-smd");
put(".smi", "application/octet-stream");
put(".smx", "audio/x-smd");
put(".smz", "audio/x-smd");
put(".snd", "audio/basic");
put(".snippet", "application/xml");
put(".snp", "application/octet-stream");
put(".sol", "text/plain");
put(".sor", "text/plain");
put(".spc", "application/x-pkcs7-certificates");
put(".spl", "application/futuresplash");
put(".src", "application/x-wais-source");
put(".srf", "text/plain");
put(".SSISDeploymentManifest", "text/xml");
put(".ssm", "application/streamingmedia");
put(".sst", "application/vnd.ms-pki.certstore");
put(".stl", "application/vnd.ms-pki.stl");
put(".sv4cpio", "application/x-sv4cpio");
put(".sv4crc", "application/x-sv4crc");
put(".svc", "application/xml");
put(".swf", "application/x-shockwave-flash");
put(".t", "application/x-troff");
put(".tar", "application/x-tar");
put(".tcl", "application/x-tcl");
put(".testrunconfig", "application/xml");
put(".testsettings", "application/xml");
put(".tex", "application/x-tex");
put(".texi", "application/x-texinfo");
put(".texinfo", "application/x-texinfo");
put(".tgz", "application/x-compressed");
put(".thmx", "application/vnd.ms-officetheme");
put(".thn", "application/octet-stream");
put(".tif", "image/tiff");
put(".tiff", "image/tiff");
put(".tlh", "text/plain");
put(".tli", "text/plain");
put(".toc", "application/octet-stream");
put(".tr", "application/x-troff");
put(".trm", "application/x-msterminal");
put(".trx", "application/xml");
put(".ts", "video/vnd.dlna.mpeg-tts");
put(".tsv", "text/tab-separated-values");
put(".ttf", "application/octet-stream");
put(".tts", "video/vnd.dlna.mpeg-tts");
put(".txt", "text/plain");
put(".u32", "application/octet-stream");
put(".uls", "text/iuls");
put(".user", "text/plain");
put(".ustar", "application/x-ustar");
put(".vb", "text/plain");
put(".vbdproj", "text/plain");
put(".vbk", "video/mpeg");
put(".vbproj", "text/plain");
put(".vbs", "text/vbscript");
put(".vcf", "text/x-vcard");
put(".vcproj", "Application/xml");
put(".vcs", "text/plain");
put(".vcxproj", "Application/xml");
put(".vddproj", "text/plain");
put(".vdp", "text/plain");
put(".vdproj", "text/plain");
put(".vdx", "application/vnd.ms-visio.viewer");
put(".vml", "text/xml");
put(".vscontent", "application/xml");
put(".vsct", "text/xml");
put(".vsd", "application/vnd.visio");
put(".vsi", "application/ms-vsi");
put(".vsix", "application/vsix");
put(".vsixlangpack", "text/xml");
put(".vsixmanifest", "text/xml");
put(".vsmdi", "application/xml");
put(".vspscc", "text/plain");
put(".vss", "application/vnd.visio");
put(".vsscc", "text/plain");
put(".vssettings", "text/xml");
put(".vssscc", "text/plain");
put(".vst", "application/vnd.visio");
put(".vstemplate", "text/xml");
put(".vsto", "application/x-ms-vsto");
put(".vsw", "application/vnd.visio");
put(".vsx", "application/vnd.visio");
put(".vtx", "application/vnd.visio");
put(".wav", "audio/wav");
put(".wave", "audio/wav");
put(".wax", "audio/x-ms-wax");
put(".wbk", "application/msword");
put(".wbmp", "image/vnd.wap.wbmp");
put(".wcm", "application/vnd.ms-works");
put(".wdb", "application/vnd.ms-works");
put(".wdp", "image/vnd.ms-photo");
put(".webarchive", "application/x-safari-webarchive");
put(".webtest", "application/xml");
put(".wiq", "application/xml");
put(".wiz", "application/msword");
put(".wks", "application/vnd.ms-works");
put(".WLMP", "application/wlmoviemaker");
put(".wlpginstall", "application/x-wlpg-detect");
put(".wlpginstall3", "application/x-wlpg3-detect");
put(".wm", "video/x-ms-wm");
put(".wma", "audio/x-ms-wma");
put(".wmd", "application/x-ms-wmd");
put(".wmf", "application/x-msmetafile");
put(".wml", "text/vnd.wap.wml");
put(".wmlc", "application/vnd.wap.wmlc");
put(".wmls", "text/vnd.wap.wmlscript");
put(".wmlsc", "application/vnd.wap.wmlscriptc");
put(".wmp", "video/x-ms-wmp");
put(".wmv", "video/x-ms-wmv");
put(".wmx", "video/x-ms-wmx");
put(".wmz", "application/x-ms-wmz");
put(".wpl", "application/vnd.ms-wpl");
put(".wps", "application/vnd.ms-works");
put(".wri", "application/x-mswrite");
put(".wrl", "x-world/x-vrml");
put(".wrz", "x-world/x-vrml");
put(".wsc", "text/scriptlet");
put(".wsdl", "text/xml");
put(".wvx", "video/x-ms-wvx");
put(".x", "application/directx");
put(".xaf", "x-world/x-vrml");
put(".xaml", "application/xaml+xml");
put(".xap", "application/x-silverlight-app");
put(".xbap", "application/x-ms-xbap");
put(".xbm", "image/x-xbitmap");
put(".xdr", "text/plain");
put(".xht", "application/xhtml+xml");
put(".xhtml", "application/xhtml+xml");
put(".xla", "application/vnd.ms-excel");
put(".xlam", "application/vnd.ms-excel.addin.macroEnabled.12");
put(".xlc", "application/vnd.ms-excel");
put(".xld", "application/vnd.ms-excel");
put(".xlk", "application/vnd.ms-excel");
put(".xll", "application/vnd.ms-excel");
put(".xlm", "application/vnd.ms-excel");
put(".xls", "application/vnd.ms-excel");
put(".xlsb", "application/vnd.ms-excel.sheet.binary.macroEnabled.12");
put(".xlsm", "application/vnd.ms-excel.sheet.macroEnabled.12");
put(".xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
put(".xlt", "application/vnd.ms-excel");
put(".xltm", "application/vnd.ms-excel.template.macroEnabled.12");
put(".xltx", "application/vnd.openxmlformats-officedocument.spreadsheetml.template");
put(".xlw", "application/vnd.ms-excel");
put(".xml", "text/xml");
put(".xmta", "application/xml");
put(".xof", "x-world/x-vrml");
put(".XOML", "text/plain");
put(".xpm", "image/x-xpixmap");
put(".xps", "application/vnd.ms-xpsdocument");
put(".xrm-ms", "text/xml");
put(".xsc", "application/xml");
put(".xsd", "text/xml");
put(".xsf", "text/xml");
put(".xsl", "text/xml");
put(".xslt", "text/xml");
put(".xsn", "application/octet-stream");
put(".xss", "application/xml");
put(".xtp", "application/octet-stream");
put(".xwd", "image/x-xwindowdump");
put(".z", "application/x-compress");
put(".zip", "application/x-zip-compressed");
}
};
}
public static String getMimeType(String extension) {
if (extension == null) {
return null;
}
if (!extension.startsWith(".")) {
extension = "." + extension.toLowerCase(Locale.getDefault());
}
String mime = mimeTypes.get(extension);
return mime != null ? mime : "application/octet-stream";
}
}
【讨论】：
正如之前的回答中已经发布的那样，大多数常见的 MIME 类型都是在网络服务器中配置的。例如在 tomcat conf/ 我们有 web.xml 配置了以下 MIME：
<mime-mapping>
<extension>abs</extension>
<mime-type>audio/x-mpeg</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ai</extension>
<mime-type>application/postscript</mime-type>
</mime-mapping>
<mime-mapping>
<extension>aif</extension>
<mime-type>audio/x-aiff</mime-type>
</mime-mapping>
...
创建一个启动监听器，它在 Web 应用程序启动时启动并解析此 XML 文件并为您创建 ENUMS 并将其绑定到 servlet 上下文以共享下游。
【讨论】：