开源中国上抓取的content-type类型，来源：http://www.cnblogs.com/smallyard/p/5632608.html
{ ".*": "application/octet-stream", ".tif": "application/x-tif", ".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": "application/x-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": "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/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": "application/x-ico", ".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": "application/x-jpe", ".jpeg": "image/jpeg", ".jpg": "application/x-jpg", ".js": "application/x-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/x-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/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/x-javascript", ".movie": "video/x-sgi-movie", ".mp1": "audio/mp1", ".mp2": "audio/mp2", ".mp2v": "video/mpeg", ".mp3": "audio/mp3", ".mp4": "video/mpeg4", ".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", ".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": "application/x-png", ".pot": "application/vnd.ms-powerpoint", ".ppa": "application/vnd.ms-powerpoint", ".ppm": "application/x-ppm", ".pps": "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/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/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", ".tiff": "image/tiff", ".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/x-vsd", ".vss": "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", ".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" }