以下代码为各文件的MIME类型，如果有个别文件在代码中找不到相应的MIME类型，可参考网站MDN网站

            {
    
    ".3gp",    "video/3gpp"},   
            {
    
    ".apk",    "application/vnd.android.package-archive"},   
            {
    
    ".asf",    "video/x-ms-asf"},   
            {
    
    ".avi",    "video/x-msvideo"},   
            {
    
    ".bin",    "application/octet-stream"},   
            {
    
    ".bmp",    "image/bmp"},   
            {
    
    ".c",      "text/plain"},   
            {
    
    ".class",  "application/octet-stream"},   
            {
    
    ".conf",   "text/plain"},   
            {
    
    ".cpp",    "text/plain"},   
            {
    
    ".doc",    "application/msword"},   
            {
    
    ".docx",   "application/vnd.openxmlformats-officedocument.wordprocessingml.document"},   
            {
    
    ".xls",    "application/vnd.ms-excel"},    
            {
    
    ".xlsx",   "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"},   
            {
    
    ".exe",    "application/octet-stream"},   
            {
    
    ".gif",    "image/gif"},   
            {
    
    ".gtar",   "application/x-gtar"},   
            {
    
    ".gz",     "application/x-gzip"},   
            {
    
    ".h",      "text/plain"},   
            {
    
    ".htm",    "text/html"},   
            {
    
    ".html",   "text/html"},   
            {
    
    ".jar",    "application/java-archive"},   
            {
    
    ".java",   "text/plain"},   
            {
    
    ".jpeg",   "image/jpeg"},   
            {
    
    ".jpg",    "image/jpeg"},   
            {
    
    ".js",     "application/x-javascript"},   
            {
    
    ".log",    "text/plain"},   
            {
    
    ".m3u",    "audio/x-mpegurl"},   
            {
    
    ".m4a",    "audio/mp4a-latm"},   
            {
    
    ".m4b",    "audio/mp4a-latm"},   
            {
    
    ".m4p",    "audio/mp4a-latm"},   
            {
    
    ".m4u",    "video/vnd.mpegurl"},   
            {
    
    ".m4v",    "video/x-m4v"},    
            {
    
    ".mov",    "video/quicktime"},   
            {
    
    ".mp2",    "audio/x-mpeg"},   
            {
    
    ".mp3",    "audio/x-mpeg"},   
            {
    
    ".mp4",    "video/mp4"},   
            {
    
    ".mpc",    "application/vnd.mpohun.certificate"},          
            {
    
    ".mpe",    "video/mpeg"},     
            {
    
    ".mpeg",   "video/mpeg"},     
            {
    
    ".mpg",    "video/mpeg"},     
            {
    
    ".mpg4",   "video/mp4"},      
            {
    
    ".mpga",   "audio/mpeg"},   
            {
    
    ".msg",    "application/vnd.ms-outlook"},   
            {
    
    ".ogg",    "audio/ogg"},   
            {
    
    ".pdf",    "application/pdf"},   
            {
    
    ".png",    "image/png"},   
            {
    
    ".pps",    "application/vnd.ms-powerpoint"},   
            {
    
    ".ppt",    "application/vnd.ms-powerpoint"},   
            {
    
    ".pptx",   "application/vnd.openxmlformats-officedocument.presentationml.presentation"},   
            {
    
    ".prop",   "text/plain"},   
            {
    
    ".rc",     "text/plain"},   
            {
    
    ".rmvb",   "audio/x-pn-realaudio"},   
            {
    
    ".rtf",    "application/rtf"},   
            {
    
    ".sh",     "text/plain"},   
            {
    
    ".tar",    "application/x-tar"},      
            {
    
    ".tgz",    "application/x-compressed"},    
            {
    
    ".txt",    "text/plain"},   
            {
    
    ".wav",    "audio/x-wav"},   
            {
    
    ".wma",    "audio/x-ms-wma"},   
            {
    
    ".wmv",    "audio/x-ms-wmv"},   
            {
    
    ".wps",    "application/vnd.ms-works"},   
            {
    
    ".xml",    "text/plain"},   
            {
    
    ".z",      "application/x-compress"},   
            {
    
    ".zip",    "application/zip"},   
            {
    
    ".zip",    "application/x-zip-compressed"},   
            {
    
    "",        "*/*"}