FileTypeUtils

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package api.xxx.com.upload.utils;

        import cn.hutool.core.io.FileUtil;

/**
 *
 * @author Kelvin范显
 * @createDate 2019年02月21日
 */
final public class FileTypeUtils{

    /**
     * 根据文件名获取文件类型
     * @param filename
     * @return
     */
    public static String getContentTypeByFilename(String filename) {
        return getContentTypeByExtName(FileUtil.extName(filename));
    }

    /**
     * 根据文件后缀名获取文件类型
     * @param extName
     * @return
     */
    public static String getContentTypeByExtName(String extName){
        switch (extName){
            case "jpeg": return "image/jpeg";
            case "jpg": return "image/jpeg";
            case "js": return "application/x-javascript";
            case "jsp": return "text/html";
            case "gif": return "image/gif";
            case "htm": return "text/html";
            case "html": return "text/html";
            case "asf": return "video/x-ms-asf";
            case "avi": return "video/avi";
            case "bmp": return "application/x-bmp";
            case "asp": return "text/asp";
            case "wma": return "audio/x-ms-wma";
            case "wav": return "audio/wav";
            case "wmv": return "video/x-ms-wmv";
            case "ra": return "audio/vnd.rn-realaudio";
            case "ram": return "audio/x-pn-realaudio";
            case "rm": return "application/vnd.rn-realmedia";
            case "rmvb": return "application/vnd.rn-realmedia-vbr";
            case "xhtml": return "text/html";
            case "png": return "image/png";
            case "tif": return "image/tiff";
            case "tiff": return "image/tiff";
            case "xlw": return "application/x-xlw";
            case "xml": return "text/xml";
            case "xpl": return "audio/scpls";
            case "swf": return "application/x-shockwave-flash";
            case "torrent": return "application/x-bittorrent";
            case "dll": return "application/x-msdownload";
            case "asa": return "text/asa";
            case "asx": return "video/x-ms-asf";
            case "au": return "audio/basic";
            case "css": return "text/css";
            case "exe": return "application/x-msdownload";
            case "mp1": return "audio/mp1";
            case "mp2": return "audio/mp2";
            case "mp2v": return "video/mpeg";
            case "mp3": return "audio/mp3";
            case "mp4": return "video/mpeg4";
            case "mpa": return "video/x-mpg";
            case "mpd": return "application/vnd.ms-project";
            case "mpe": return "video/x-mpeg";
            case "mpeg": return "video/mpg";
            case "mpg": return "video/mpg";
            case "mpga": return "audio/rn-mpeg";
            case "mpp": return "application/vnd.ms-project";
            case "mps": return "video/x-mpeg";
            case "mpt": return "application/vnd.ms-project";
            case "mpv": return "video/mpg";
            case "mpv2": return "video/mpeg";
            case "wml": return "text/vnd.wap.wml";
            case "wsdl": return "text/xml";
            case "xsd": return "text/xml";
            case "xsl": return "text/xml";
            case "xslt": return "text/xml";
            case "htc": return "text/x-component";
            case "mdb": return "application/msaccess";
            case "zip": return "application/zip";
            case "rar": return "application/x-rar-compressed";

            //BEGIN Microsoft Office MIME Types
            case "doc": return "application/msword";
            case "dot": return "application/msword";
            case "docx": return "application/vndopenxmlformats-officedocumentwordprocessingmldocument";
            case "dotx": return "application/vndopenxmlformats-officedocumentwordprocessingmltemplate";
            case "docm": return "application/vndms-worddocumentmacroEnabled12";
            case "dotm": return "application/vndms-wordtemplatemacroEnabled12";
            case "xls": return "application/vndms-excel";
            case "xlt": return "application/vndms-excel";
            case "xla": return "application/vndms-excel";
            case "xlsx": return "application/vndopenxmlformats-officedocumentspreadsheetmlsheet";
            case "xltx": return "application/vndopenxmlformats-officedocumentspreadsheetmltemplate";
            case "xlsm": return "application/vndms-excelsheetmacroEnabled12";
            case "xltm": return "application/vndms-exceltemplatemacroEnabled12";
            case "xlam": return "application/vndms-exceladdinmacroEnabled12";
            case "xlsb": return "application/vndms-excelsheetbinarymacroEnabled12";
            case "ppt": return "application/vndms-powerpoint";
            case "pot": return "application/vndms-powerpoint";
            case "pps": return "application/vndms-powerpoint";
            case "ppa": return "application/vndms-powerpoint";
            case "pptx": return "application/vndopenxmlformats-officedocumentpresentationmlpresentation";
            case "potx": return "application/vndopenxmlformats-officedocumentpresentationmltemplate";
            case "ppsx": return "application/vndopenxmlformats-officedocumentpresentationmlslideshow";
            case "ppam": return "application/vndms-powerpointaddinmacroEnabled12";
            case "pptm": return "application/vndms-powerpointpresentationmacroEnabled12";
            case "potm": return "application/vndms-powerpointtemplatemacroEnabled12";
            case "ppsm": return "application/vndms-powerpointslideshowmacroEnabled12";
            //END Microsoft Office MIME Types

            // others
            case "*": return "application/octet-stream";
            case "001": return "application/x-001";
            case "301": return "application/x-301";
            case "323": return "text/h323";
            case "906": return "application/x-906";
            case "907": return "drawing/907";
            case "a11": return "application/x-a11";
            case "acp": return "audio/x-mei-aac";
            case "ai": return "application/postscript";
            case "aif": return "audio/aiff";
            case "aifc": return "audio/aiff";
            case "aiff": return "audio/aiff";
            case "anv": return "application/x-anv";
            case "awf": return "application/vnd.adobe.workflow";
            case "biz": return "text/xml";
            case "bot": return "application/x-bot";
            case "c4t": return "application/x-c4t";
            case "c90": return "application/x-c90";
            case "cal": return "application/x-cals";
            case "cat": return "application/vnd.ms-pki.seccat";
            case "cdf": return "application/x-netcdf";
            case "cdr": return "application/x-cdr";
            case "cel": return "application/x-cel";
            case "cer": return "application/x-x509-ca-cert";
            case "cg4": return "application/x-g4";
            case "cgm": return "application/x-cgm";
            case "cit": return "application/x-cit";
            case "class": return "java/*";
            case "cml": return "text/xml";
            case "cmp": return "application/x-cmp";
            case "cmx": return "application/x-cmx";
            case "cot": return "application/x-cot";
            case "crl": return "application/pkix-crl";
            case "crt": return "application/x-x509-ca-cert";
            case "csi": return "application/x-csi";
            case "cut": return "application/x-cut";
            case "dbf": return "application/x-dbf";
            case "dbm": return "application/x-dbm";
            case "dbx": return "application/x-dbx";
            case "dcd": return "text/xml";
            case "dcx": return "application/x-dcx";
            case "der": return "application/x-x509-ca-cert";
            case "dgn": return "application/x-dgn";
            case "dib": return "application/x-dib";
            case "drw": return "application/x-drw";
            case "dtd": return "text/xml";
            case "dwf": return "application/x-dwf";
            case "dwg": return "application/x-dwg";
            case "dxb": return "application/x-dxb";
            case "dxf": return "application/x-dxf";
            case "edn": return "application/vnd.adobe.edn";
            case "emf": return "application/x-emf";
            case "eml": return "message/rfc822";
            case "ent": return "text/xml";
            case "epi": return "application/x-epi";
            case "eps": return "application/x-ps";
            case "etd": return "application/x-ebx";
            case "fax": return "image/fax";
            case "fdf": return "application/vnd.fdf";
            case "fif": return "application/fractals";
            case "fo": return "text/xml";
            case "frm": return "application/x-frm";
            case "g4": return "application/x-g4";
            case "gbr": return "application/x-gbr";
            case "gcd": return "application/x-gcd";
            case "gl2": return "application/x-gl2";
            case "gp4": return "application/x-gp4";
            case "hgl": return "application/x-hgl";
            case "hmr": return "application/x-hmr";
            case "hpg": return "application/x-hpgl";
            case "hpl": return "application/x-hpl";
            case "hqx": return "application/mac-binhex40";
            case "hrf": return "application/x-hrf";
            case "hta": return "application/hta";
            case "htt": return "text/webviewhtml";
            case "htx": return "text/html";
            case "icb": return "application/x-icb";
            case "ico": return "application/x-ico";
            case "iff": return "application/x-iff";
            case "ig4": return "application/x-g4";
            case "igs": return "application/x-igs";
            case "iii": return "application/x-iphone";
            case "img": return "application/x-img";
            case "ins": return "application/x-internet-signup";
            case "isp": return "application/x-internet-signup";
            case "IVF": return "video/x-ivf";
            case "java": return "java/*";
            case "jfif": return "image/jpeg";
            case "jpe": return "application/x-jpe";
            case "la1": return "audio/x-liquid-file";
            case "lar": return "application/x-laplayer-reg";
            case "latex": return "application/x-latex";
            case "lavs": return "audio/x-liquid-secure";
            case "lbm": return "application/x-lbm";
            case "lmsff": return "audio/x-la-lms";
            case "ls": return "application/x-javascript";
            case "ltr": return "application/x-ltr";
            case "m1v": return "video/x-mpeg";
            case "m2v": return "video/x-mpeg";
            case "m3u": return "audio/mpegurl";
            case "m4e": return "video/mpeg4";
            case "mac": return "application/x-mac";
            case "man": return "application/x-troff-man";
            case "math": return "text/xml";
            case "mfp": return "application/x-shockwave-flash";
            case "mht": return "message/rfc822";
            case "mhtml": return "message/rfc822";
            case "mi": return "application/x-mi";
            case "mid": return "audio/mid";
            case "midi": return "audio/mid";
            case "mil": return "application/x-mil";
            case "mml": return "text/xml";
            case "mnd": return "audio/x-musicnet-download";
            case "mns": return "audio/x-musicnet-stream";
            case "mocha": return "application/x-javascript";
            case "movie": return "video/x-sgi-movie";
            case "mpw": return "application/vnd.ms-project";
            case "mpx": return "application/vnd.ms-project";
            case "mtx": return "text/xml";
            case "mxp": return "application/x-mmxp";
            case "net": return "image/pnetvue";
            case "nrf": return "application/x-nrf";
            case "nws": return "message/rfc822";
            case "odc": return "text/x-ms-odc";
            case "out": return "application/x-out";
            case "p10": return "application/pkcs10";
            case "p12": return "application/x-pkcs12";
            case "p7b": return "application/x-pkcs7-certificates";
            case "p7c": return "application/pkcs7-mime";
            case "p7m": return "application/pkcs7-mime";
            case "p7r": return "application/x-pkcs7-certreqresp";
            case "p7s": return "application/pkcs7-signature";
            case "pc5": return "application/x-pc5";
            case "pci": return "application/x-pci";
            case "pcl": return "application/x-pcl";
            case "pcx": return "application/x-pcx";
            case "pdf": return "application/pdf";
            case "pdx": return "application/vnd.adobe.pdx";
            case "pfx": return "application/x-pkcs12";
            case "pgl": return "application/x-pgl";
            case "pic": return "application/x-pic";
            case "pko": return "application/vnd.ms-pki.pko";
            case "pl": return "application/x-perl";
            case "plg": return "text/html";
            case "pls": return "audio/scpls";
            case "plt": return "application/x-plt";
            case "ppm": return "application/x-ppm";
            case "pr": return "application/x-pr";
            case "prf": return "application/pics-rules";
            case "prn": return "application/x-prn";
            case "prt": return "application/x-prt";
            case "ps": return "application/x-ps";
            case "ptn": return "application/x-ptn";
            case "pwz": return "application/vnd.ms-powerpoint";
            case "r3t": return "text/vnd.rn-realtext3d";
            case "ras": return "application/x-ras";
            case "rat": return "application/rat-file";
            case "rdf": return "text/xml";
            case "rec": return "application/vnd.rn-recording";
            case "red": return "application/x-red";
            case "rgb": return "application/x-rgb";
            case "rjs": return "application/vnd.rn-realsystem-rjs";
            case "rjt": return "application/vnd.rn-realsystem-rjt";
            case "rlc": return "application/x-rlc";
            case "rle": return "application/x-rle";
            case "rmf": return "application/vnd.adobe.rmf";
            case "rmi": return "audio/mid";
            case "rmj": return "application/vnd.rn-realsystem-rmj";
            case "rmm": return "audio/x-pn-realaudio";
            case "rmp": return "application/vnd.rn-rn_music_package";
            case "rms": return "application/vnd.rn-realmedia-secure";
            case "rmx": return "application/vnd.rn-realsystem-rmx";
            case "rnx": return "application/vnd.rn-realplayer";
            case "rp": return "image/vnd.rn-realpix";
            case "rpm": return "audio/x-pn-realaudio-plugin";
            case "rsml": return "application/vnd.rn-rsml";
            case "rt": return "text/vnd.rn-realtext";
            case "rtf": return "application/msword";
            case "rv": return "video/vnd.rn-realvideo";
            case "sam": return "application/x-sam";
            case "sat": return "application/x-sat";
            case "sdp": return "application/sdp";
            case "sdw": return "application/x-sdw";
            case "sit": return "application/x-stuffit";
            case "slb": return "application/x-slb";
            case "sld": return "application/x-sld";
            case "slk": return "drawing/x-slk";
            case "smi": return "application/smil";
            case "smil": return "application/smil";
            case "smk": return "application/x-smk";
            case "snd": return "audio/basic";
            case "sol": return "text/plain";
            case "sor": return "text/plain";
            case "spc": return "application/x-pkcs7-certificates";
            case "spl": return "application/futuresplash";
            case "spp": return "text/xml";
            case "ssm": return "application/streamingmedia";
            case "sst": return "application/vnd.ms-pki.certstore";
            case "stl": return "application/vnd.ms-pki.stl";
            case "stm": return "text/html";
            case "sty": return "application/x-sty";
            case "svg": return "text/xml";
            case "tdf": return "application/x-tdf";
            case "tg4": return "application/x-tg4";
            case "tga": return "application/x-tga";
            case "tld": return "text/xml";
            case "top": return "drawing/x-top";
            case "tsd": return "text/xml";
            case "txt": return "text/plain";
            case "uin": return "application/x-icq";
            case "uls": return "text/iuls";
            case "vcf": return "text/x-vcard";
            case "vda": return "application/x-vda";
            case "vdx": return "application/vnd.visio";
            case "vml": return "text/xml";
            case "vpg": return "application/x-vpeg005";
            case "vsd": return "application/vnd.visio";
            case "vss": return "application/vnd.visio";
            case "vst": return "application/vnd.visio";
            case "vsw": return "application/vnd.visio";
            case "vsx": return "application/vnd.visio";
            case "vtx": return "application/vnd.visio";
            case "vxml": return "text/xml";
            case "wax": return "audio/x-ms-wax";
            case "wb1": return "application/x-wb1";
            case "wb2": return "application/x-wb2";
            case "wb3": return "application/x-wb3";
            case "wbmp": return "image/vnd.wap.wbmp";
            case "wiz": return "application/msword";
            case "wk3": return "application/x-wk3";
            case "wk4": return "application/x-wk4";
            case "wkq": return "application/x-wkq";
            case "wks": return "application/x-wks";
            case "wm": return "video/x-ms-wm";
            case "wmd": return "application/x-ms-wmd";
            case "wmf": return "application/x-wmf";
            case "wmx": return "video/x-ms-wmx";
            case "wmz": return "application/x-ms-wmz";
            case "wp6": return "application/x-wp6";
            case "wpd": return "application/x-wpd";
            case "wpg": return "application/x-wpg";
            case "wpl": return "application/vnd.ms-wpl";
            case "wq1": return "application/x-wq1";
            case "wr1": return "application/x-wr1";
            case "wri": return "application/x-wri";
            case "wrk": return "application/x-wrk";
            case "ws": return "application/x-ws";
            case "ws2": return "application/x-ws";
            case "wsc": return "text/scriptlet";
            case "wvx": return "video/x-ms-wvx";
            case "xdp": return "application/vnd.adobe.xdp";
            case "xdr": return "text/xml";
            case "xfd": return "application/vnd.adobe.xfd";
            case "xfdf": return "application/vnd.adobe.xfdf";
            case "xq": return "text/xml";
            case "xql": return "text/xml";
            case "xquery": return "text/xml";
            case "xwd": return "application/x-xwd";
            case "x_b": return "application/x-x_b";
            case "x_t": return "application/x-x_t";
        }
        return "application/octet-stream";
    }
}

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