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81 lines (78 loc) · 2.9 KB
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/*
* 作用：根据文件名获取这个文件对应的 Mime 类型。
* */
using System.Collections.Generic;
namespace Helper.Core.Library
{
#region 逻辑处理辅助枚举
public class MimeTypeEnum
{
public const string ALL = "*";
public const string DOC = "doc";
public const string EXE = "exe";
public const string PDF = "pdf";
public const string XLS = "xls";
public const string XLSX = "xlsx";
public const string GZ = "gz";
public const string ZIP = "zip";
public const string MID = "mid";
public const string MP3 = "mp3";
public const string WAV = "wav";
public const string BMP = "bmp";
public const string GIF = "gif";
public const string JPEG = "jpeg";
public const string JPG = "jpg";
public const string CSS = "css";
public const string HTM = "htm";
public const string HTML = "html";
public const string TXT = "txt";
}
#endregion
public class MimeHelper
{
#region 私有属性常量
private static Dictionary<string, string> MineDict = new Dictionary<string, string>()
{
{MimeTypeEnum.ALL, "application/octet-stream"},
{MimeTypeEnum.DOC, "application/msword"},
{MimeTypeEnum.EXE, "application/octet-stream"},
{MimeTypeEnum.PDF, "application/pdf"},
{MimeTypeEnum.XLS, "application/vnd.ms-excel"},
{MimeTypeEnum.XLSX, "application/vnd.ms-excel"},
{MimeTypeEnum.GZ, "application/x-gzip"},
{MimeTypeEnum.ZIP, "application/zip"},
{MimeTypeEnum.MID, "audio/mid"},
{MimeTypeEnum.MP3, "audio/mpeg"},
{MimeTypeEnum.WAV, "audio/x-wav"},
{MimeTypeEnum.BMP, "image/bmp"},
{MimeTypeEnum.GIF, "image/gif"},
{MimeTypeEnum.JPEG, "image/jpeg"},
{MimeTypeEnum.JPG, "image/jpeg"},
{MimeTypeEnum.CSS, "text/css"},
{MimeTypeEnum.HTM, "text/html"},
{MimeTypeEnum.HTML, "text/html"},
{MimeTypeEnum.TXT, "text/plain"}
};
#endregion
#region 对外公开方法
/// <summary>
/// 获得 Mine 类型
/// </summary>
/// <param name="filePath">文件地址</param>
/// <param name="isSuffix">是否后缀名</param>
/// <returns></returns>
public static string GetMineType(string filePath, bool isSuffix = false)
{
if (string.IsNullOrEmpty(filePath)) return null;
string suffix = filePath;
if (!isSuffix)
{
suffix = FileHelper.GetSuffix(suffix);
if (!string.IsNullOrEmpty(suffix)) suffix = suffix.TrimStart(new char[] { '.' });
}
if (MineDict.ContainsKey(suffix)) return MineDict[suffix];
return null;
}
#endregion
}
}