文件类型ContentType枚举

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1、问题描述

　　最近在做文件上传优化，有些文件发现需要设置ContentType属性才能正常显示，否则就会以文件流的方式走下载去了，于是网上找到了文件后缀与ContentType对应的关系整理成了枚举方便使用。

2、操作方法

package com.enums;

public enum MimeTypeEnum {
    
    AAC("acc","AAC音频","audio/aac"),
    
    ABW("abw","AbiWord文件","application/x-abiword"),
    
    ARC("arc","存档文件","application/x-freearc"),
    
    AVI("avi","音频视频交错格式","video/x-msvideo"),
   
    AZW("azw","亚马逊Kindle电子书格式","application/vnd.amazon.ebook"),
    
    BIN("bin","任何类型的二进制数据","application/octet-stream"),
    
    BMP("bmp","Windows OS / 2位图图形","image/bmp"),
   
    BZ("bz","BZip存档","application/x-bzip"),
   
    BZ2("bz2","BZip2存档","application/x-bzip2"),
   
    CSH("csh","C-Shell脚本","application/x-csh"),
    
    CSS("css","级联样式表（CSS）","text/css"),
   
    CSV("csv","逗号分隔值（CSV）","text/csv"),
    
    DOC("doc","微软Word文件","application/msword"),
    
    DOCX("docx","Microsoft Word（OpenXML）","application/vnd.openxmlformats-officedocument.wordprocessingml.document"),
    
    EOT("eot","MS Embedded OpenType字体","application/vnd.ms-fontobject"),
   
    EPUB("epub","电子出版物（EPUB）","application/epub+zip"),
   
    GZ("gz","GZip压缩档案","application/gzip"),
    
    GIF("gif","图形交换格式（GIF）","image/gif"),
    
    HTM("htm","超文本标记语言（HTML）","text/html"),
    
    HTML("html","超文本标记语言（HTML）","text/html"),
   
    ICO("ico","图标格式","image/vnd.microsoft.icon"),
    
    ICS("ics","iCalendar格式","text/calendar"),
    
    JAR("jar","Java存档","application/java-archive"),
    
    JPEG("jpeg","JPEG图像","image/jpeg"),
    
    JPG("jpg","JPEG图像","image/jpeg"),
    
    JS("js","JavaScript","text/javascript"),
    
    JSON("json","JSON格式","application/json"),
    
    JSONLD("jsonld","JSON-LD格式","application/ld+json"),
    
    MID("mid","乐器数字接口（MIDI）","audio/midi"),
    
    MIDI("midi","乐器数字接口（MIDI）","audio/midi"),
    
    MJS("mjs","JavaScript模块","text/javascript"),
    
    MP3("mp3","MP3音频","audio/mpeg"),
    
    MPEG("mpeg","MPEG视频","video/mpeg"),
    
    MPKG("mpkg","苹果安装程序包","application/vnd.apple.installer+xml"),
    
    ODP("odp","OpenDocument演示文稿文档","application/vnd.oasis.opendocument.presentation"),
   
    ODS("ods","OpenDocument电子表格文档","application/vnd.oasis.opendocument.spreadsheet"),
    
    ODT("odt","OpenDocument文字文件","application/vnd.oasis.opendocument.text"),

    OGA("oga","OGG音讯","audio/ogg"),
    
    OGV("ogv","OGG视频","video/ogg"),
    
    OGX("ogx","OGG","application/ogg"),
    
    OPUS("opus","OPUS音频","audio/opus"),
    
    OTF("otf","otf字体","font/otf"),
    
    PNG("png","便携式网络图形","image/png"),
    
    PDF("pdf","Adobe 可移植文档格式（PDF）","application/pdf"),
    
    PHP("php","php","application/x-httpd-php"),
    
    PPT("ppt","Microsoft PowerPoint","application/vnd.ms-powerpoint"),
    
    PPTX("pptx","Microsoft PowerPoint（OpenXML）","application/vnd.openxmlformats-officedocument.presentationml.presentation"),
    
    RAR("rar","RAR档案","application/vnd.rar"),
    
    RTF("rtf","富文本格式","application/rtf"),
    
    SH("sh","Bourne Shell脚本","application/x-sh"),
    
    SVG("svg","可缩放矢量图形（SVG）","image/svg+xml"),
    
    SWF("swf","小型Web格式（SWF）或Adobe Flash文档","application/x-shockwave-flash"),
    
    TAR("tar","磁带存档（TAR）","application/x-tar"),
    
    TIF("tif","标记图像文件格式（TIFF）","image/tiff"),
    
    TIFF("tiff","标记图像文件格式（TIFF）","image/tiff"),
    
    TS("ts","MPEG传输流","video/mp2t"),
    
    TTF("ttf","ttf字体","font/ttf"),
    
    TXT("txt","文本（通常为ASCII或ISO 8859- n","text/plain"),
    
    VSD("vsd","微软Visio","application/vnd.visio"),
    
    WAV("wav","波形音频格式","audio/wav"),
    
    WEBA("weba","WEBM音频","audio/webm"),
    
    WEBM("webm","WEBM视频","video/webm"),
    
    WEBP("webp","WEBP图像","image/webp"),
    
    WOFF("woff","Web开放字体格式（WOFF）","font/woff"),
   
    WOFF2("woff2","Web开放字体格式（WOFF）","font/woff2"),
    
    XHTML("xhtml","XHTML","application/xhtml+xml"),
   
    XLS("xls","微软Excel","application/vnd.ms-excel"),
    
    XLSX("xlsx","微软Excel（OpenXML）","application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"),
    
    XML("xml","XML","application/xml"),
    
    XUL("xul","XUL","application/vnd.mozilla.xul+xml"),
    
    ZIP("zip","ZIP","application/zip"),
    
    MIME_3GP("3gp", "3GPP audio/video container", "video/3gpp"),
    
    MIME_3GP_WITHOUT_VIDEO("3gp", "3GPP audio/video container doesn't contain video", "audio/3gpp2"),
    
    MIME_3G2("3g2", "3GPP2 audio/video container", "video/3gpp2"),

    MIME_3G2_WITHOUT_VIDEO("3g2", "3GPP2 audio/video container  doesn't contain video", "audio/3gpp2"),

    MIME_7Z("7z","7-zip存档","application/x-7z-compressed")
    ;

    private String extension;

    private String explain;

    private String mimeType;

    MimeTypeEnum(String extension, String explain, String mimeType) {
        this.extension = extension;
        this.explain = explain;
        this.mimeType = mimeType;
    }
    
    public static MimeTypeEnum findByExtension(String extension) {
        if(StringUtil.isBlank(extension)){
            return null;
        }
        for (MimeTypeEnum typesEnum : MimeTypeEnum.values()) {
            if (extension.equals(typesEnum.getExtension())) {
                return typesEnum;
            }
        }
        return null;
    }
    
    /**
     * 描述：Content-Type常用对照
     * @param fileType
     * @return
     * @since
     */
    public static String getContentType(String fileType) {
        MimeTypeEnum mimeTypeEnum = MimeTypeEnum.findByExtension(fileType);
        if(mimeTypeEnum != null){
            return mimeTypeEnum.getMimeType();
        }
        return "application/octet-stream";
    }
    
}

3、参考网站

　　https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types/Common_types