content: package cn.ymotel.dactor.async.web;
  
  import org.springframework.http.MediaType;
  import org.springframework.http.MediaTypeFactory;
  import org.springframework.util.StringUtils;
  
  import javax.servlet.ServletContext;
  import javax.servlet.http.HttpServletRequest;
  import java.util.HashMap;
  import java.util.Map;
  
  public class ContentTypeUtil {
      /**
       * 两种初始化Map常量
       * 1.new HashMap
       * 2.static 静态代码块
       */
      static Map<String , String> contentType = new HashMap<String , String>(){
          {
              put("jpg","image/jpeg");
              put("jpeg","image/jpeg");
          }
      };
      //通过key获取ContentType值
      public static String getContentType(String ext) {
          return contentType.get(ext);
      }
      public static MediaType getMediaType(HttpServletRequest request, String urlpath){
          MediaType mediaType = null;
          ServletContext servletContext=request.getServletContext();
          {
              String mimeType = servletContext.getMimeType(urlpath);
              if (StringUtils.hasText(mimeType)) {
                  mediaType = MediaType.parseMediaType(mimeType);
              }
          }
  
          if (mediaType == null|| MediaType.APPLICATION_OCTET_STREAM.equals(mediaType)) {
              mediaType = MediaTypeFactory.getMediaType(urlpath).orElse(null);
          }
  
          if(mediaType!=null){
              return mediaType;
          }
  
          mediaType= MediaType.parseMediaType(ContentTypeUtil.getContentType(StringUtils.getFilenameExtension(urlpath)));
          if(mediaType!=null){
              return mediaType;
          }
          mediaType=MediaType.parseMediaType(request.getContentType());
          return mediaType;
      }
      static {
          contentType.put("load", "text/html");
          contentType.put("123", "application/vnd.lotus-1-2-3");
          contentType.put("3ds", "image/x-3ds");
          contentType.put("3g2", "video/3gpp");
          contentType.put("3ga", "video/3gpp");
          contentType.put("3gp", "video/3gpp");
          contentType.put("3gpp", "video/3gpp");
          contentType.put("602", "application/x-t602");
          contentType.put("669", "audio/x-mod");
          contentType.put("7z", "application/x-7z-compressed");
          contentType.put("a", "application/x-archive");
          contentType.put("aac", "audio/mp4");
          contentType.put("abw", "application/x-abiword");
          contentType.put("abw.crashed", "application/x-abiword");
          contentType.put("abw.gz", "application/x-abiword");
          contentType.put("ac3", "audio/ac3");
          contentType.put("ace", "application/x-ace");
          contentType.put("adb", "text/x-adasrc");
          contentType.put("ads", "text/x-adasrc");
          contentType.put("afm", "application/x-font-afm");
          contentType.put("ag", "image/x-applix-graphics");
          contentType.put("ai", "application/illustrator");
          contentType.put("aif", "audio/x-aiff");
          contentType.put("aifc", "audio/x-aiff");
          contentType.put("aiff", "audio/x-aiff");
          contentType.put("al", "application/x-perl");
          contentType.put("alz", "application/x-alz");
          contentType.put("amr", "audio/amr");
          contentType.put("ani", "application/x-navi-animation");
          contentType.put("anim[1-9j]", "video/x-anim");
          contentType.put("anx", "application/annodex");
          contentType.put("ape", "audio/x-ape");
          contentType.put("arj", "application/x-arj");
          contentType.put("arw", "image/x-sony-arw");
          contentType.put("as", "application/x-applix-spreadsheet");
          contentType.put("asc", "text/plain");
          contentType.put("asf", "video/x-ms-asf");
          contentType.put("asp", "application/x-asp");
          contentType.put("ass", "text/x-ssa");
          contentType.put("asx", "audio/x-ms-asx");
          contentType.put("atom", "application/atom+xml");
          contentType.put("au", "audio/basic");
          contentType.put("avi", "video/x-msvideo");
          contentType.put("aw", "application/x-applix-word");
          contentType.put("awb", "audio/amr-wb");
          contentType.put("awk", "application/x-awk");
          contentType.put("axa", "audio/annodex");
          contentType.put("axv", "video/annodex");
          contentType.put("bak", "application/x-trash");
          contentType.put("bcpio", "application/x-bcpio");
          contentType.put("bdf", "application/x-font-bdf");
          contentType.put("bib", "text/x-bibtex");
          contentType.put("bin", "application/octet-stream");
          contentType.put("blend", "application/x-blender");
          contentType.put("blender", "application/x-blender");
          contentType.put("bmp", "image/bmp");
          contentType.put("bz", "application/x-bzip");
          contentType.put("bz2", "application/x-bzip");
          contentType.put("c", "text/x-csrc");
          contentType.put("c++", "text/x-c++src");
          contentType.put("cab", "application/vnd.ms-cab-compressed");
          contentType.put("cb7", "application/x-cb7");
          contentType.put("cbr", "application/x-cbr");
          contentType.put("cbt", "application/x-cbt");
          contentType.put("cbz", "application/x-cbz");
          contentType.put("cc", "text/x-c++src");
          contentType.put("cdf", "application/x-netcdf");
          contentType.put("cdr", "application/vnd.corel-draw");
          contentType.put("cer", "application/x-x509-ca-cert");
          contentType.put("cert", "application/x-x509-ca-cert");
          contentType.put("cgm", "image/cgm");
          contentType.put("chm", "application/x-chm");
          contentType.put("chrt", "application/x-kchart");
          contentType.put("class", "application/x-java");
          contentType.put("cls", "text/x-tex");
          contentType.put("cmake", "text/x-cmake");
          contentType.put("cpio", "application/x-cpio");
          contentType.put("cpio.gz", "application/x-cpio-compressed");
          contentType.put("cpp", "text/x-c++src");
          contentType.put("cr2", "image/x-canon-cr2");
          contentType.put("crt", "application/x-x509-ca-cert");
          contentType.put("crw", "image/x-canon-crw");
          contentType.put("cs", "text/x-csharp");
          contentType.put("csh", "application/x-csh");
          contentType.put("css", "text/css");
          contentType.put("cssl", "text/css");
          contentType.put("csv", "text/csv");
          contentType.put("cue", "application/x-cue");
          contentType.put("cur", "image/x-win-bitmap");
          contentType.put("cxx", "text/x-c++src");
          contentType.put("d", "text/x-dsrc");
          contentType.put("dar", "application/x-dar");
          contentType.put("dbf", "application/x-dbf");
          contentType.put("dc", "application/x-dc-rom");
          contentType.put("dcl", "text/x-dcl");
          contentType.put("dcm", "application/dicom");
          contentType.put("dcr", "image/x-kodak-dcr");
          contentType.put("dds", "image/x-dds");
          contentType.put("deb", "application/x-deb");
          contentType.put("der", "application/x-x509-ca-cert");
          contentType.put("desktop", "application/x-desktop");
          contentType.put("dia", "application/x-dia-diagram");
          contentType.put("diff", "text/x-patch");
          contentType.put("divx", "video/x-msvideo");
          contentType.put("djv", "image/vnd.djvu");
          contentType.put("djvu", "image/vnd.djvu");
          contentType.put("dng", "image/x-adobe-dng");
          contentType.put("doc", "application/msword");
          contentType.put("docbook", "application/docbook+xml");
          contentType.put("docm", "application/vnd.openxmlformats-officedocument.wordprocessingml.document");
          contentType.put("docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document");
          contentType.put("dot", "text/vnd.graphviz");
          contentType.put("dsl", "text/x-dsl");
          contentType.put("dtd", "application/xml-dtd");
          contentType.put("dtx", "text/x-tex");
          contentType.put("dv", "video/dv");
          contentType.put("dvi", "application/x-dvi");
          contentType.put("dvi.bz2", "application/x-bzdvi");
          contentType.put("dvi.gz", "application/x-gzdvi");
          contentType.put("dwg", "image/vnd.dwg");
          contentType.put("dxf", "image/vnd.dxf");
          contentType.put("e", "text/x-eiffel");
          contentType.put("egon", "application/x-egon");
          contentType.put("eif", "text/x-eiffel");
          contentType.put("el", "text/x-emacs-lisp");
          contentType.put("emf", "image/x-emf");
          contentType.put("emp", "application/vnd.emusic-emusic_package");
          contentType.put("ent", "application/xml-external-parsed-entity");
          contentType.put("eps", "image/x-eps");
          contentType.put("eps.bz2", "image/x-bzeps");
          contentType.put("eps.gz", "image/x-gzeps");
          contentType.put("epsf", "image/x-eps");
          contentType.put("epsf.bz2", "image/x-bzeps");
          contentType.put("epsf.gz", "image/x-gzeps");
          contentType.put("epsi", "image/x-eps");
          contentType.put("epsi.bz2", "image/x-bzeps");
          contentType.put("epsi.gz", "image/x-gzeps");
          contentType.put("epub", "application/epub+zip");
          contentType.put("erl", "text/x-erlang");
          contentType.put("es", "application/ecmascript");
          contentType.put("etheme", "application/x-e-theme");
          contentType.put("etx", "text/x-setext");
          contentType.put("exe", "application/x-ms-dos-executable");
          contentType.put("exr", "image/x-exr");
          contentType.put("ez", "application/andrew-inset");
          contentType.put("f", "text/x-fortran");
          contentType.put("f90", "text/x-fortran");
          contentType.put("f95", "text/x-fortran");
          contentType.put("fb2", "application/x-fictionbook+xml");
          contentType.put("fig", "image/x-xfig");
          contentType.put("fits", "image/fits");
          contentType.put("fl", "application/x-fluid");
          contentType.put("flac", "audio/x-flac");
          contentType.put("flc", "video/x-flic");
          contentType.put("fli", "video/x-flic");
          contentType.put("flv", "video/x-flv");
          contentType.put("flw", "application/x-kivio");
          contentType.put("fo", "text/x-xslfo");
          contentType.put("for", "text/x-fortran");
          contentType.put("g3", "image/fax-g3");
          contentType.put("gb", "application/x-gameboy-rom");
          contentType.put("gba", "application/x-gba-rom");
          contentType.put("gcrd", "text/directory");
          contentType.put("ged", "application/x-gedcom");
          contentType.put("gedcom", "application/x-gedcom");
          contentType.put("gen", "application/x-genesis-rom");
          contentType.put("gf", "application/x-tex-gf");
          contentType.put("gg", "application/x-sms-rom");
          contentType.put("gif", "image/gif");
          contentType.put("glade", "application/x-glade");
          contentType.put("gmo", "application/x-gettext-translation");
          contentType.put("gnc", "application/x-gnucash");
          contentType.put("gnd", "application/gnunet-directory");
          contentType.put("gnucash", "application/x-gnucash");
          contentType.put("gnumeric", "application/x-gnumeric");
          contentType.put("gnuplot", "application/x-gnuplot");
          contentType.put("gp", "application/x-gnuplot");
          contentType.put("gpg", "application/pgp-encrypted");
          contentType.put("gplt", "application/x-gnuplot");
          contentType.put("gra", "application/x-graphite");
          contentType.put("gsf", "application/x-font-type1");
          contentType.put("gsm", "audio/x-gsm");
          contentType.put("gtar", "application/x-tar");
          contentType.put("gv", "text/vnd.graphviz");
          contentType.put("gvp", "text/x-google-video-pointer");
          contentType.put("gz", "application/x-gzip");
          contentType.put("h", "text/x-chdr");
          contentType.put("h++", "text/x-c++hdr");
          contentType.put("hdf", "application/x-hdf");
          contentType.put("hh", "text/x-c++hdr");
          contentType.put("hp", "text/x-c++hdr");
          contentType.put("hpgl", "application/vnd.hp-hpgl");
          contentType.put("hpp", "text/x-c++hdr");
          contentType.put("hs", "text/x-haskell");
          contentType.put("htm", "text/html");
          contentType.put("html", "text/html");
          contentType.put("hwp", "application/x-hwp");
          contentType.put("hwt", "application/x-hwt");
          contentType.put("hxx", "text/x-c++hdr");
          contentType.put("ica", "application/x-ica");
          contentType.put("icb", "image/x-tga");
          contentType.put("icns", "image/x-icns");
          contentType.put("ico", "image/vnd.microsoft.icon");
          contentType.put("ics", "text/calendar");
          contentType.put("idl", "text/x-idl");
          contentType.put("ief", "image/ief");
          contentType.put("iff", "image/x-iff");
          contentType.put("ilbm", "image/x-ilbm");
          contentType.put("ime", "text/x-imelody");
          contentType.put("imy", "text/x-imelody");
          contentType.put("ins", "text/x-tex");
          contentType.put("iptables", "text/x-iptables");
          contentType.put("iso", "application/x-cd-image");
          contentType.put("iso9660", "application/x-cd-image");
          contentType.put("it", "audio/x-it");
          contentType.put("j2k", "image/jp2");
          contentType.put("jad", "text/vnd.sun.j2me.app-descriptor");
          contentType.put("jar", "application/x-java-archive");
          contentType.put("java", "text/x-java");
          contentType.put("jng", "image/x-jng");
          contentType.put("jnlp", "application/x-java-jnlp-file");
          contentType.put("jp2", "image/jp2");
          contentType.put("jpc", "image/jp2");
          contentType.put("jpe", "image/jpeg");
          contentType.put("jpeg", "image/jpeg");
          contentType.put("jpf", "image/jp2");
          contentType.put("jpg", "image/jpeg");
          contentType.put("jpr", "application/x-jbuilder-project");
          contentType.put("jpx", "image/jp2");
          contentType.put("js", "application/javascript");
          contentType.put("json", "application/json");
          contentType.put("jsonp", "application/jsonp");
          contentType.put("k25", "image/x-kodak-k25");
          contentType.put("kar", "audio/midi");
          contentType.put("karbon", "application/x-karbon");
          contentType.put("kdc", "image/x-kodak-kdc");
          contentType.put("kdelnk", "application/x-desktop");
          contentType.put("kexi", "application/x-kexiproject-sqlite3");
          contentType.put("kexic", "application/x-kexi-connectiondata");
          contentType.put("kexis", "application/x-kexiproject-shortcut");
          contentType.put("kfo", "application/x-kformula");
          contentType.put("kil", "application/x-killustrator");
          contentType.put("kino", "application/smil");
          contentType.put("kml", "application/vnd.google-earth.kml+xml");
          contentType.put("kmz", "application/vnd.google-earth.kmz");
          contentType.put("kon", "application/x-kontour");
          contentType.put("kpm", "application/x-kpovmodeler");
          contentType.put("kpr", "application/x-kpresenter");
          contentType.put("kpt", "application/x-kpresenter");
          contentType.put("kra", "application/x-krita");
          contentType.put("ksp", "application/x-kspread");
          contentType.put("kud", "application/x-kugar");
          contentType.put("kwd", "application/x-kword");
          contentType.put("kwt", "application/x-kword");
          contentType.put("la", "application/x-shared-library-la");
          contentType.put("latex", "text/x-tex");
          contentType.put("ldif", "text/x-ldif");
          contentType.put("lha", "application/x-lha");
          contentType.put("lhs", "text/x-literate-haskell");
          contentType.put("lhz", "application/x-lhz");
          contentType.put("log", "text/x-log");
          contentType.put("ltx", "text/x-tex");
          contentType.put("lua", "text/x-lua");
          contentType.put("lwo", "image/x-lwo");
          contentType.put("lwob", "image/x-lwo");
          contentType.put("lws", "image/x-lws");
          contentType.put("ly", "text/x-lilypond");
          contentType.put("lyx", "application/x-lyx");
          contentType.put("lz", "application/x-lzip");
          contentType.put("lzh", "application/x-lha");
          contentType.put("lzma", "application/x-lzma");
          contentType.put("lzo", "application/x-lzop");
          contentType.put("m", "text/x-matlab");
          contentType.put("m15", "audio/x-mod");
          contentType.put("m2t", "video/mpeg");
          contentType.put("m3u", "audio/x-mpegurl");
          contentType.put("m3u8", "audio/x-mpegurl");
          contentType.put("m4", "application/x-m4");
          contentType.put("m4a", "audio/mp4");
          contentType.put("m4b", "audio/x-m4b");
          contentType.put("m4v", "video/mp4");
          contentType.put("mab", "application/x-markaby");
          contentType.put("man", "application/x-troff-man");
          contentType.put("mbox", "application/mbox");
          contentType.put("md", "application/x-genesis-rom");
          contentType.put("mdb", "application/vnd.ms-access");
          contentType.put("mdi", "image/vnd.ms-modi");
          contentType.put("me", "text/x-troff-me");
          contentType.put("med", "audio/x-mod");
          contentType.put("metalink", "application/metalink+xml");
          contentType.put("mgp", "application/x-magicpoint");
          contentType.put("mid", "audio/midi");
          contentType.put("midi", "audio/midi");
          contentType.put("mif", "application/x-mif");
          contentType.put("minipsf", "audio/x-minipsf");
          contentType.put("mka", "audio/x-matroska");
          contentType.put("mkv", "video/x-matroska");
          contentType.put("ml", "text/x-ocaml");
          contentType.put("mli", "text/x-ocaml");
          contentType.put("mm", "text/x-troff-mm");
          contentType.put("mmf", "application/x-smaf");
          contentType.put("mml", "text/mathml");
          contentType.put("mng", "video/x-mng");
          contentType.put("mo", "application/x-gettext-translation");
          contentType.put("mo3", "audio/x-mo3");
          contentType.put("moc", "text/x-moc");
          contentType.put("mod", "audio/x-mod");
          contentType.put("mof", "text/x-mof");
          contentType.put("moov", "video/quicktime");
          contentType.put("mov", "video/quicktime");
          contentType.put("movie", "video/x-sgi-movie");
          contentType.put("mp+", "audio/x-musepack");
          contentType.put("mp2", "video/mpeg");
          contentType.put("mp3", "audio/mpeg");
          contentType.put("mp4", "video/mp4");
          contentType.put("mpc", "audio/x-musepack");
          contentType.put("mpe", "video/mpeg");
          contentType.put("mpeg", "video/mpeg");
          contentType.put("mpg", "video/mpeg");
          contentType.put("mpga", "audio/mpeg");
          contentType.put("mpp", "audio/x-musepack");
          contentType.put("mrl", "text/x-mrml");
          contentType.put("mrml", "text/x-mrml");
          contentType.put("mrw", "image/x-minolta-mrw");
          contentType.put("ms", "text/x-troff-ms");
          contentType.put("msi", "application/x-msi");
          contentType.put("msod", "image/x-msod");
          contentType.put("msx", "application/x-msx-rom");
          contentType.put("mtm", "audio/x-mod");
          contentType.put("mup", "text/x-mup");
          contentType.put("mxf", "application/mxf");
          contentType.put("n64", "application/x-n64-rom");
          contentType.put("nb", "application/mathematica");
          contentType.put("nc", "application/x-netcdf");
          contentType.put("nds", "application/x-nintendo-ds-rom");
          contentType.put("nef", "image/x-nikon-nef");
          contentType.put("nes", "application/x-nes-rom");
          contentType.put("nfo", "text/x-nfo");
          contentType.put("not", "text/x-mup");
          contentType.put("nsc", "application/x-netshow-channel");
          contentType.put("nsv", "video/x-nsv");
          contentType.put("o", "application/x-object");
          contentType.put("obj", "application/x-tgif");
          contentType.put("ocl", "text/x-ocl");
          contentType.put("oda", "application/oda");
          contentType.put("odb", "application/vnd.oasis.opendocument.database");
          contentType.put("odc", "application/vnd.oasis.opendocument.chart");
          contentType.put("odf", "application/vnd.oasis.opendocument.formula");
          contentType.put("odg", "application/vnd.oasis.opendocument.graphics");
          contentType.put("odi", "application/vnd.oasis.opendocument.image");
          contentType.put("odm", "application/vnd.oasis.opendocument.text-master");
          contentType.put("odp", "application/vnd.oasis.opendocument.presentation");
          contentType.put("ods", "application/vnd.oasis.opendocument.spreadsheet");
          contentType.put("odt", "application/vnd.oasis.opendocument.text");
          contentType.put("oga", "audio/ogg");
          contentType.put("ogg", "video/x-theora+ogg");
          contentType.put("ogm", "video/x-ogm+ogg");
          contentType.put("ogv", "video/ogg");
          contentType.put("ogx", "application/ogg");
          contentType.put("old", "application/x-trash");
          contentType.put("oleo", "application/x-oleo");
          contentType.put("opml", "text/x-opml+xml");
          contentType.put("ora", "image/openraster");
          contentType.put("orf", "image/x-olympus-orf");
          contentType.put("otc", "application/vnd.oasis.opendocument.chart-template");
          contentType.put("otf", "application/x-font-otf");
          contentType.put("otg", "application/vnd.oasis.opendocument.graphics-template");
          contentType.put("oth", "application/vnd.oasis.opendocument.text-web");
          contentType.put("otp", "application/vnd.oasis.opendocument.presentation-template");
          contentType.put("ots", "application/vnd.oasis.opendocument.spreadsheet-template");
          contentType.put("ott", "application/vnd.oasis.opendocument.text-template");
          contentType.put("owl", "application/rdf+xml");
          contentType.put("oxt", "application/vnd.openofficeorg.extension");
          contentType.put("p", "text/x-pascal");
          contentType.put("p10", "application/pkcs10");
          contentType.put("p12", "application/x-pkcs12");
          contentType.put("p7b", "application/x-pkcs7-certificates");
          contentType.put("p7s", "application/pkcs7-signature");
          contentType.put("pack", "application/x-java-pack200");
          contentType.put("pak", "application/x-pak");
          contentType.put("par2", "application/x-par2");
          contentType.put("pas", "text/x-pascal");
          contentType.put("patch", "text/x-patch");
          contentType.put("pbm", "image/x-portable-bitmap");
          contentType.put("pcd", "image/x-photo-cd");
          contentType.put("pcf", "application/x-cisco-vpn-settings");
          contentType.put("pcf.gz", "application/x-font-pcf");
          contentType.put("pcf.z", "application/x-font-pcf");
          contentType.put("pcl", "application/vnd.hp-pcl");
          contentType.put("pcx", "image/x-pcx");
          contentType.put("pdb", "chemical/x-pdb");
          contentType.put("pdc", "application/x-aportisdoc");
          contentType.put("pdf", "application/pdf");
          contentType.put("pdf.bz2", "application/x-bzpdf");
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          contentType.put("pem", "application/x-x509-ca-cert");
          contentType.put("perl", "application/x-perl");
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          contentType.put("pfb", "application/x-font-type1");
          contentType.put("pfx", "application/x-pkcs12");
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          contentType.put("pgn", "application/x-chess-pgn");
          contentType.put("pgp", "application/pgp-encrypted");
          contentType.put("php", "application/x-php");
          contentType.put("php3", "application/x-php");
          contentType.put("php4", "application/x-php");
          contentType.put("pict", "image/x-pict");
          contentType.put("pict1", "image/x-pict");
          contentType.put("pict2", "image/x-pict");
          contentType.put("pickle", "application/python-pickle");
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          contentType.put("pkr", "application/pgp-keys");
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          contentType.put("pla", "audio/x-iriver-pla");
          contentType.put("pln", "application/x-planperfect");
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          contentType.put("png", "image/png");
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          contentType.put("pot", "text/x-gettext-translation-template");
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          contentType.put("ppt", "application/vnd.ms-powerpoint");
          contentType.put("pptm", "application/vnd.openxmlformats-officedocument.presentationml.presentation");
          contentType.put("pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation");
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          contentType.put("prc", "application/x-palm-database");
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          contentType.put("ps.bz2", "application/x-bzpostscript");
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          contentType.put("psd", "image/vnd.adobe.photoshop");
          contentType.put("psf", "audio/x-psf");
          contentType.put("psf.gz", "application/x-gz-font-linux-psf");
          contentType.put("psflib", "audio/x-psflib");
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          contentType.put("psw", "application/x-pocket-word");
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          contentType.put("qtif", "image/x-quicktime");
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          contentType.put("rar", "application/x-rar");
          contentType.put("ras", "image/x-cmu-raster");
          contentType.put("raw", "image/x-panasonic-raw");
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          contentType.put("rdfs", "application/rdf+xml");
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          contentType.put("rmj", "application/vnd.rn-realmedia");
          contentType.put("rmm", "application/vnd.rn-realmedia");
          contentType.put("rms", "application/vnd.rn-realmedia");
          contentType.put("rmvb", "application/vnd.rn-realmedia");
          contentType.put("rmx", "application/vnd.rn-realmedia");
          contentType.put("roff", "text/troff");
          contentType.put("rp", "image/vnd.rn-realpix");
          contentType.put("rpm", "application/x-rpm");
          contentType.put("rss", "application/rss+xml");
          contentType.put("rt", "text/vnd.rn-realtext");
          contentType.put("rtf", "application/rtf");
          contentType.put("rtx", "text/richtext");
          contentType.put("rv", "video/vnd.rn-realvideo");
          contentType.put("rvx", "video/vnd.rn-realvideo");
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          contentType.put("sam", "application/x-amipro");
          contentType.put("sami", "application/x-sami");
          contentType.put("sav", "application/x-spss-sav");
          contentType.put("scm", "text/x-scheme");
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          contentType.put("sdc", "application/vnd.stardivision.calc");
          contentType.put("sdd", "application/vnd.stardivision.impress");
          contentType.put("sdp", "application/sdp");
          contentType.put("sds", "application/vnd.stardivision.chart");
          contentType.put("sdw", "application/vnd.stardivision.writer");
          contentType.put("sgf", "application/x-go-sgf");
          contentType.put("sgi", "image/x-sgi");
          contentType.put("sgl", "application/vnd.stardivision.writer");
          contentType.put("sgm", "text/sgml");
          contentType.put("sgml", "text/sgml");
          contentType.put("sh", "application/x-shellscript");
          contentType.put("shar", "application/x-shar");
          contentType.put("shn", "application/x-shorten");
          contentType.put("siag", "application/x-siag");
          contentType.put("sid", "audio/prs.sid");
          contentType.put("sik", "application/x-trash");
          contentType.put("sis", "application/vnd.symbian.install");
          contentType.put("sisx", "x-epoc/x-sisx-app");
          contentType.put("sit", "application/x-stuffit");
          contentType.put("siv", "application/sieve");
          contentType.put("sk", "image/x-skencil");
          contentType.put("sk1", "image/x-skencil");
          contentType.put("skr", "application/pgp-keys");
          contentType.put("slk", "text/spreadsheet");
          contentType.put("smaf", "application/x-smaf");
          contentType.put("smc", "application/x-snes-rom");
          contentType.put("smd", "application/vnd.stardivision.mail");
          contentType.put("smf", "application/vnd.stardivision.math");
          contentType.put("smi", "application/x-sami");
          contentType.put("smil", "application/smil");
          contentType.put("sml", "application/smil");
          contentType.put("sms", "application/x-sms-rom");
          contentType.put("snd", "audio/basic");
          contentType.put("so", "application/x-sharedlib");
          contentType.put("spc", "application/x-pkcs7-certificates");
          contentType.put("spd", "application/x-font-speedo");
          contentType.put("spec", "text/x-rpm-spec");
          contentType.put("spl", "application/x-shockwave-flash");
          contentType.put("spx", "audio/x-speex");
          contentType.put("sql", "text/x-sql");
          contentType.put("sr2", "image/x-sony-sr2");
          contentType.put("src", "application/x-wais-source");
          contentType.put("srf", "image/x-sony-srf");
          contentType.put("srt", "application/x-subrip");
          contentType.put("ssa", "text/x-ssa");
          contentType.put("stc", "application/vnd.sun.xml.calc.template");
          contentType.put("std", "application/vnd.sun.xml.draw.template");
          contentType.put("sti", "application/vnd.sun.xml.impress.template");
          contentType.put("stm", "audio/x-stm");
          contentType.put("stw", "application/vnd.sun.xml.writer.template");
          contentType.put("sty", "text/x-tex");
          contentType.put("sub", "text/x-subviewer");
          contentType.put("sun", "image/x-sun-raster");
          contentType.put("sv4cpio", "application/x-sv4cpio");
          contentType.put("sv4crc", "application/x-sv4crc");
          contentType.put("svg", "image/svg+xml");
          contentType.put("svgz", "image/svg+xml-compressed");
          contentType.put("swf", "application/x-shockwave-flash");
          contentType.put("sxc", "application/vnd.sun.xml.calc");
          contentType.put("sxd", "application/vnd.sun.xml.draw");
          contentType.put("sxg", "application/vnd.sun.xml.writer.global");
          contentType.put("sxi", "application/vnd.sun.xml.impress");
          contentType.put("sxm", "application/vnd.sun.xml.math");
          contentType.put("sxw", "application/vnd.sun.xml.writer");
          contentType.put("sylk", "text/spreadsheet");
          contentType.put("t", "text/troff");
          contentType.put("t2t", "text/x-txt2tags");
          contentType.put("tar", "application/x-tar");
          contentType.put("tar.bz", "application/x-bzip-compressed-tar");
          contentType.put("tar.bz2", "application/x-bzip-compressed-tar");
          contentType.put("tar.gz", "application/x-compressed-tar");
          contentType.put("tar.lzma", "application/x-lzma-compressed-tar");
          contentType.put("tar.lzo", "application/x-tzo");
          contentType.put("tar.xz", "application/x-xz-compressed-tar");
          contentType.put("tar.z", "application/x-tarz");
          contentType.put("tbz", "application/x-bzip-compressed-tar");
          contentType.put("tbz2", "application/x-bzip-compressed-tar");
          contentType.put("tcl", "text/x-tcl");
          contentType.put("tex", "text/x-tex");
          contentType.put("texi", "text/x-texinfo");
          contentType.put("texinfo", "text/x-texinfo");
          contentType.put("tga", "image/x-tga");
          contentType.put("tgz", "application/x-compressed-tar");
          contentType.put("theme", "application/x-theme");
          contentType.put("themepack", "application/x-windows-themepack");
          contentType.put("tif", "image/tiff");
          contentType.put("tiff", "image/tiff");
          contentType.put("tk", "text/x-tcl");
          contentType.put("tlz", "application/x-lzma-compressed-tar");
          contentType.put("tnef", "application/vnd.ms-tnef");
          contentType.put("tnf", "application/vnd.ms-tnef");
          contentType.put("toc", "application/x-cdrdao-toc");
          contentType.put("torrent", "application/x-bittorrent");
          contentType.put("tpic", "image/x-tga");
          contentType.put("tr", "text/troff");
          contentType.put("ts", "application/x-linguist");
          contentType.put("tsv", "text/tab-separated-values");
          contentType.put("tta", "audio/x-tta");
          contentType.put("ttc", "application/x-font-ttf");
          contentType.put("ttf", "application/x-font-ttf");
          contentType.put("ttx", "application/x-font-ttx");
          contentType.put("txt", "text/plain");
          contentType.put("txz", "application/x-xz-compressed-tar");
          contentType.put("tzo", "application/x-tzo");
          contentType.put("ufraw", "application/x-ufraw");
          contentType.put("ui", "application/x-designer");
          contentType.put("uil", "text/x-uil");
          contentType.put("ult", "audio/x-mod");
          contentType.put("uni", "audio/x-mod");
          contentType.put("uri", "text/x-uri");
          contentType.put("url", "text/x-uri");
          contentType.put("ustar", "application/x-ustar");
          contentType.put("vala", "text/x-vala");
          contentType.put("vapi", "text/x-vala");
          contentType.put("vcf", "text/directory");
          contentType.put("vcs", "text/calendar");
          contentType.put("vct", "text/directory");
          contentType.put("vda", "image/x-tga");
          contentType.put("vhd", "text/x-vhdl");
          contentType.put("vhdl", "text/x-vhdl");
          contentType.put("viv", "video/vivo");
          contentType.put("vivo", "video/vivo");
          contentType.put("vlc", "audio/x-mpegurl");
          contentType.put("vob", "video/mpeg");
          contentType.put("voc", "audio/x-voc");
          contentType.put("vor", "application/vnd.stardivision.writer");
          contentType.put("vst", "image/x-tga");
          contentType.put("wav", "audio/x-wav");
          contentType.put("wax", "audio/x-ms-asx");
          contentType.put("wb1", "application/x-quattropro");
          contentType.put("wb2", "application/x-quattropro");
          contentType.put("wb3", "application/x-quattropro");
          contentType.put("wbmp", "image/vnd.wap.wbmp");
          contentType.put("wcm", "application/vnd.ms-works");
          contentType.put("wdb", "application/vnd.ms-works");
          contentType.put("webm", "video/webm");
          contentType.put("wk1", "application/vnd.lotus-1-2-3");
          contentType.put("wk3", "application/vnd.lotus-1-2-3");
          contentType.put("wk4", "application/vnd.lotus-1-2-3");
          contentType.put("wks", "application/vnd.ms-works");
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          contentType.put("wmls", "text/vnd.wap.wmlscript");
          contentType.put("wmv", "video/x-ms-wmv");
          contentType.put("wmx", "audio/x-ms-asx");
          contentType.put("wp", "application/vnd.wordperfect");
          contentType.put("wp4", "application/vnd.wordperfect");
          contentType.put("wp5", "application/vnd.wordperfect");
          contentType.put("wp6", "application/vnd.wordperfect");
          contentType.put("wpd", "application/vnd.wordperfect");
          contentType.put("wpg", "application/x-wpg");
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          contentType.put("wpp", "application/vnd.wordperfect");
          contentType.put("wps", "application/vnd.ms-works");
          contentType.put("wri", "application/x-mswrite");
          contentType.put("wrl", "model/vrml");
          contentType.put("wv", "audio/x-wavpack");
          contentType.put("wvc", "audio/x-wavpack-correction");
          contentType.put("wvp", "audio/x-wavpack");
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          contentType.put("xac", "application/x-gnucash");
          contentType.put("xbel", "application/x-xbel");
          contentType.put("xbl", "application/xml");
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          contentType.put("xcf.gz", "image/x-compressed-xcf");
          contentType.put("xhtml", "application/xhtml+xml");
          contentType.put("xi", "audio/x-xi");
          contentType.put("xla", "application/vnd.ms-excel");
          contentType.put("xlc", "application/vnd.ms-excel");
          contentType.put("xld", "application/vnd.ms-excel");
          contentType.put("xlf", "application/x-xliff");
          contentType.put("xliff", "application/x-xliff");
          contentType.put("xll", "application/vnd.ms-excel");
          contentType.put("xlm", "application/vnd.ms-excel");
          contentType.put("xls", "application/vnd.ms-excel");
          contentType.put("xlsm", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
          contentType.put("xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
          contentType.put("xlt", "application/vnd.ms-excel");
          contentType.put("xlw", "application/vnd.ms-excel");
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          contentType.put("xmf", "audio/x-xmf");
          contentType.put("xmi", "text/x-xmi");
          contentType.put("xml", "application/xml");
          contentType.put("xpm", "image/x-xpixmap");
          contentType.put("xps", "application/vnd.ms-xpsdocument");
          contentType.put("xsl", "application/xml");
          contentType.put("xslfo", "text/x-xslfo");
          contentType.put("xslt", "application/xml");
          contentType.put("xspf", "application/xspf+xml");
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          contentType.put("xwd", "image/x-xwindowdump");
          contentType.put("xyz", "chemical/x-pdb");
          contentType.put("xz", "application/x-xz");
          contentType.put("w2p", "application/w2p");
          contentType.put("z", "application/x-compress");
          contentType.put("zabw", "application/x-abiword");
          contentType.put("zip", "application/zip");
          contentType.put("woff", "font/woff");
          contentType.put("woff2", "font/woff2");
          contentType.put("htc", "text/x-component");
          contentType.put("eot", "application/vnd.ms-fontobject");
      }
  }
  