用ASP实现对MP3曲目信息的操作

发布时间：2011-06-11 01:13:34作者：知识屋

先简单说一下MP3的ID3 标记，因为主要是操作这个玩意
MP3最开始的时候没有我们今天看到的那样，有歌手、年代，专集等等信息
只有一些简单的参数如yes/no来表示是不是privated或者copyrighted等信息，这样对MP3的相关工作带来了很多不便，1996年的时候有个老外提出来在每个MP3后面追加一段数据，用以存放上述的那些信息，后来就发展成为id3 v1 据我所知的现在已经到1.1了，具体的还是自己去查一下吧
还是老习惯，用metadata来引入DLL，我以前有文章贴过的，不知道的请自己去查
看代码
〈!--METADATA TYPE="typelib" UUID="00000205-0000-0010-8000-00AA006D2EA4" NAME="ADODB Type Library" --〉〈% Function ConvertBin(Binary) 'This function converts a binary byte into an ASCII byte. for i = 1 to LenB(Binary) strChar = chr(AscB(MidB(Binary,i,1))) ConvertBin = ConvertBin & strChar Next End Function dim objStream dim strTag, strSongName, strArtist, strAlbum, strYear, _ strComment, strGenre, strFile 'Specify the folder to iterate through, displaying all the MP3s Const folder = "C:mp3s" 'Grab the folder information Dim objFSO, objFolder, objFile Set objFSO = Server.CreateObject("Scripting.FileSYstemObject") Set objFolder = objFSO.GetFolder(folder) 'Create the Stream object set objStream = Server.CreateObject("ADODB.Stream") objStream.Type = adTypeBinary 'Loop through the files in the folder For Each objFile in objFolder.Files 'Open the stream objStream.Open objStream.LoadFromFile objFile.Path 'Read the last 128 bytes objStream.Position = objStream.size - 128 'Read the ID3 v1 tag info strTag = ConvertBin(objStream.Read(3)) if ucase(strTag) = "TAG" then strSongName = ConvertBin(objStream.Read(30)) strArtist = ConvertBin(objStream.Read(30)) strAlbum = ConvertBin(objStream.Read(30)) strYear = ConvertBin(objStream.Read(4)) strComment = ConvertBin(objStream.Read(30)) end if 'Display the results response.write "〈table〉〈tr〉〈td colspan=2〉〈h3〉" & _ "ID3 Tag info for:〈/td〉〈/tr〉〈tr〉" & _ "〈td colspan=2〉" & objFile.Name & "〈/td〉〈/tr〉" response.write "〈tr〉〈td〉〈b〉Artist: 〈/b〉〈/td〉" & _ "〈td〉" & strArtist & "〈/td〉〈/tr〉" response.write "〈tr〉〈td〉〈b〉Track: 〈/b〉〈/td〉" & _ "〈td〉" & strSongName & "〈/td〉〈/tr〉" response.write "〈tr〉〈td〉〈b〉Album: 〈/b〉〈/td〉" & _ 〈td〉" & strAlbum & "〈/td〉〈/tr〉" response.write "〈tr〉〈td〉〈b〉Year: 〈/b〉〈/td〉" & _ "〈td〉" & strYear & "〈/td〉〈/tr〉" response.write "〈tr〉〈td〉〈b〉Comment: 〈/b〉" & _ "〈/td〉〈td〉" & strComment & "〈/td〉〈/tr〉" response.write "〈/table〉" objStream.Close Response.Write "〈p〉〈hr〉〈p〉" Next Set objStream = Nothing 'Clean up... %〉
自己试试吧