FileSystemObject
示例代码
请注意，由于该代码是极一般的，所以要使该代码能够真正在您的机器上运行，可能需要一些其他代码和小小的变更。这些改变之所以必要，是因为在 Active Server Pages 和 Windows Scripting Host 之间，为输入和输出给用户采用了不同的方法。
要在 Active Server Pages 上运行该代码，则采取以下步骤：
创建一个标准的 Web 页，后缀名为 .asp。 把下面的示例代码复制到 <BODY>...</BODY> 标记之间的文件中。 把所有代码包装器到 <%...%> 标记内。 把 Option Explicit 语句从当前位置移动到 HTML 页的最顶部，甚至在 <HTML> 开始标记前。 把 <%...%> 标记放置在 Option Explicit 语句周围，以保证它在服务器端运行。 把下面的代码添加到示例代码末尾：
Sub Print(x) Response.Write "<PRE><FONT face=" 宋体"" SIZE=""1"">" Response.Write x Response.Write "</FONT></PRE>" End Sub Main 前面的代码增加一个将在服务器端运行，但在客户端显示结果的打印过程。要在 Windows Scripting Host 上运行该代码，则把下面的代码添加到示例代码的末尾：
Sub Print(x) WScript.Echo x End Sub Main 下面就是示例代码：
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' ' FileSystemObject 示例代码 ' 'Copyright 1998 Microsoft Corporation。保留所有权利。 ' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' Option Explicit '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' ' 对于代码质量： ' ' 1) 下面的代码有许多字符串操作，用"&"运算符来把短字符串连接在一起。由于 ' 字符串连接是费时的，所以这是一种低效率的写代码方法。无论如何，它是 ' 一种非常好维护的写代码方法，并且在这儿使用了这种方法，因为该程序执行 ' 大量的磁盘操作，而磁盘操作比连接字符串所需的内存操作要慢得多。 ' 记住这是示范代码，而不是产品代码。 ' ' 2) 使用了 "Option Explicit"，因为访问声明过的变量，比访问未声明的变量要 ' 稍微快一些。它还能阻止在代码中发生错误，例如，把 DriveTypeCDROM 误拼 ' 成了 DriveTypeCDORM 。 ' ' 3) 为了使代码更可读，该代码中没有错误处理。虽然采取了防范措施，来保证代码 ' 在普通情况下没有错误，但文件系统是不可预知的。在产品代码中，使用 ' On Error Resume Next 和 Err 对象来捕获可能发生的错误。 ' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' ' 一些容易取得的全局变量 ' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' Dim TabStop Dim NewLine Const TestDrive = "C" Const TestFilePath = "C:\Test" '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' ' 由 Drive.DriveType 返回的常数 ' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' Const DriveTypeRemovable = 1 Const DriveTypeFixed = 2 Const DriveTypeNetwork = 3 Const DriveTypeCDROM = 4 Const DriveTypeRAMDisk = 5 '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' ' 由 File.Attributes 返回的常数 ' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' Const FileAttrNormal = 0 Const FileAttrReadOnly = 1 Const FileAttrHidden = 2 Const FileAttrSystem = 4 Const FileAttrVolume = 8 Const FileAttrDirectory = 16 Const FileAttrArchive = 32 Const FileAttrAlias = 64 Const FileAttrCompressed = 128 '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' ' 用来打开文件的常数 ' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' Const OpenFileForReading = 1 Const OpenFileForWriting = 2 Const OpenFileForAppending = 8 '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' ' ShowDriveType ' ' 目的： ' ' 生成一个字符串，来描述给定 Drive 对象的驱动器类型。 ' ' 示范下面的内容 ' ' - Drive.DriveType ' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' Function ShowDriveType(Drive) Dim S Select Case Drive.DriveType Case DriveTypeRemovable S = "Removable" Case DriveTypeFixed S = "Fixed" Case DriveTypeNetwork S = "Network" Case DriveTypeCDROM S = "CD-ROM" Case DriveTypeRAMDisk S = "RAM Disk" Case Else S = "Unknown" End Select ShowDriveType = S End Function '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' ' ShowFileAttr ' ' 目的： ' ' 生成一个字符串，来描述文件或文件夹的属性。 ' ' 示范下面的内容 ' ' - File.Attributes ' - Folder.Attributes ' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' Function ShowFileAttr(File) ' File 可以是文件或文件夹 Dim S Dim Attr Attr = File.Attributes If Attr = 0 Then ShowFileAttr = "Normal" Exit Function End If If Attr And FileAttrDirectory Then S = S & "Directory " If Attr And FileAttrReadOnly Then S = S & "Read-Only " If Attr And FileAttrHidden Then S = S & "Hidden " If Attr And FileAttrSystem Then S = S & "System " If Attr And FileAttrVolume Then S = S & "Volume " If Attr And FileAttrArchive Then S = S & "Archive " If Attr And FileAttrAlias Then S = S & "Alias " If Attr And FileAttrCompressed Then S = S & "Compressed " ShowFileAttr = S End Function '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' ' GenerateDriveInformation ' ' 目的： ' ' 生成一个字符串，来描述可用驱动器的当前状态。 ' ' 示范下面的内容 ' ' - FileSystemObject.Drives ' - Iterating the Drives collection ' - Drives.Count ' - Drive.AvailableSpace ' - Drive.DriveLetter ' - Drive.DriveType ' - Drive.FileSystem ' - Drive.FreeSpace ' - Drive.IsReady ' - Drive.Path ' - Drive.SerialNumber ' - Drive.ShareName ' - Drive.TotalSize ' - Drive.VolumeName ' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' Function GenerateDriveInformation(FSO) Dim Drives Dim Drive Dim S Set Drives = FSO.Drives S = "Number of drives:" & TabStop & Drives.Count & NewLine & NewLine ' 构造报告的第一行。 S = S & String(2, TabStop) & "Drive" S = S & String(3, TabStop) & "File" S = S & TabStop & "Total" S = S & TabStop & "Free" S = S & TabStop & "Available" S = S & TabStop & "Serial" & NewLine ' 构造报告的第二行。 S = S & "Letter" S = S & TabStop & "Path" S = S & TabStop & "Type" S = S & TabStop & "Ready?" S = S & TabStop & "Name" S = S & TabStop & "System" S = S & TabStop & "Space" S = S & TabStop & "Space" S = S & TabStop & "Space" S = S & TabStop & "Number" & NewLine ' 分隔行。 S = S & String(105, "-") & NewLine For Each Drive In Drives S = S & Drive.DriveLetter S = S & TabStop & Drive.Path S = S & TabStop & ShowDriveType(Drive) S = S & TabStop & Drive.IsReady If Drive.IsReady Then If DriveTypeNetwork = Drive.DriveType Then S = S & TabStop & Drive.ShareName Else S = S & TabStop & Drive.VolumeName End If S = S & TabStop & Drive.FileSystem S = S & TabStop & Drive.TotalSize S = S & TabStop & Drive.FreeSpace S = S & TabStop & Drive.AvailableSpace S = S & TabStop & Hex(Drive.SerialNumber) End If S = S & NewLine Next GenerateDriveInformation = S End Function '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' ' GenerateFileInformation ' ' 目的： ' ' 生成一个字符串，来描述文件的当前状态。 ' ' 示范下面的内容 ' ' - File.Path ' - File.Name ' - File.Type ' - File.DateCreated ' - File.DateLastAccessed ' - File.DateLastModified ' - File.Size ' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' Function GenerateFileInformation(File) Dim S S = NewLine & "Path:" & TabStop & File.Path S = S & NewLine & "Name:" & TabStop & File.Name S = S & NewLine & "Type:" & TabStop & File.Type S = S & NewLine & "Attribs:" & TabStop & ShowFileAttr(File) S = S & NewLine & "Created:" & TabStop & File.DateCreated S = S & NewLine & "Accessed:" & TabStop & File.DateLastAccessed S = S & NewLine & "Modified:" & TabStop & File.DateLastModified S = S & NewLine & "Size" & TabStop & File.Size & NewLine GenerateFileInformation = S End Function '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' ' GenerateFolderInformation ' ' 目的： ' ' 生成一个字符串，来描述文件夹的当前状态。 ' ' 示范下面的内容 ' ' - Folder.Path ' - Folder.Name ' - Folder.DateCreated ' - Folder.DateLastAccessed ' - Folder.DateLastModified ' - Folder.Size ' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' Function GenerateFolderInformation(Folder) Dim S S = "Path:" & TabStop & Folder.Path S = S & NewLine & "Name:" & TabStop & Folder.Name S = S & NewLine & "Attribs:" & TabStop & ShowFileAttr(Folder) S = S & NewLine & "Created:" & TabStop & Folder.DateCreated S = S & NewLine & "Accessed:" & TabStop & Folder.DateLastAccessed S = S & NewLine & "Modified:" & TabStop & Folder.DateLastModified S = S & NewLine & "Size:" & TabStop & Folder.Size & NewLine GenerateFolderInformation = S End Function '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' ' GenerateAllFolderInformation ' ' 目的： ' ' 生成一个字符串，来描述一个文件夹和所有文件及子文件夹的当前状态。 ' ' 示范下面的内容 ' ' - Folder.Path ' - Folder.SubFolders ' - Folders.Count ' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' Function GenerateAllFolderInformation(Folder) Dim S Dim SubFolders Dim SubFolder Dim Files Dim File S = "Folder:" & TabStop & Folder.Path & NewLine & NewLine Set Files = Folder.Files If 1 = Files.Count Then S = S & "There is 1 file" & NewLine Else S = S & "There are " & Files.Count & " files" & NewLine End If If Files.Count <> 0 Then For Each File In Files S = S & GenerateFileInformation(File) Next End If Set SubFolders = Folder.SubFolders If 1 = SubFolders.Count Then S = S & NewLine & "There is 1 sub folder" & NewLine & NewLine Else S = S & NewLine & "There are " & SubFolders.Count & " sub folders" & NewLine & NewLine End If If SubFolders.Count <> 0 Then For Each SubFolder In SubFolders S = S & GenerateFolderInformation(SubFolder) Next S = S & NewLine For Each SubFolder In SubFolders S = S & GenerateAllFolderInformation(SubFolder) Next End If GenerateAllFolderInformation = S End Function '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' ' GenerateTestInformation ' ' 目的： ' ' 生成一个字符串，来描述 C:\Test 文件夹和所有文件及子文件夹的当前状态。 ' ' 示范下面的内容 ' ' - FileSystemObject.DriveExists ' - FileSystemObject.FolderExists ' - FileSystemObject.GetFolder ' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' Function GenerateTestInformation(FSO) Dim TestFolder Dim S If Not FSO.DriveExists(TestDrive) Then Exit Function If Not FSO.FolderExists(TestFilePath) Then Exit Function Set TestFolder = FSO.GetFolder(TestFilePath) GenerateTestInformation = GenerateAllFolderInformation(TestFolder) End Function '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' ' DeleteTestDirectory ' ' 目的： ' ' 清理 test 目录。 ' ' 示范下面的内容 ' ' - FileSystemObject.GetFolder ' - FileSystemObject.DeleteFile ' - FileSystemObject.DeleteFolder ' - Folder.Delete ' - File.Delete ' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' Sub DeleteTestDirectory(FSO) Dim TestFolder Dim SubFolder Dim File ' 有两种方法可用来删除文件： FSO.DeleteFile(TestFilePath & "\Beatles\OctopusGarden.txt") Set File = FSO.GetFile(TestFilePath & "\Beatles\BathroomWindow.txt") File.Delete ' 有两种方法可用来删除文件夹： FSO.DeleteFolder(TestFilePath & "\Beatles") FSO.DeleteFile(TestFilePath & "\ReadMe.txt") Set TestFolder = FSO.GetFolder(TestFilePath) TestFolder.Delete End Sub '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' ' CreateLyrics ' ' 目的： ' ' 在文件夹中创建两个文本文件。 ' ' ' 示范下面的内容 ' ' - FileSystemObject.CreateTextFile ' - TextStream.WriteLine ' - TextStream.Write ' - TextStream.WriteBlankLines ' - TextStream.Close ' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' Sub CreateLyrics(Folder) Dim TextStream Set TextStream = Folder.CreateTextFile("OctopusGarden.txt") TextStream.Write("Octopus' Garden ") ' 请注意，该语句不添加换行到文件中。 TextStream.WriteLine("(by Ringo Starr)") TextStream.WriteBlankLines(1) TextStream.WriteLine("I'd like to be under the sea in an octopus' garden in the shade,") TextStream.WriteLine("He'd let us in, knows where we've been -- in his octopus' garden in the shade.") TextStream.WriteBlankLines(2) TextStream.Close Set TextStream = Folder.CreateTextFile("BathroomWindow.txt") TextStream.WriteLine("She Came In Through The Bathroom Window (by Lennon/McCartney)") TextStream.WriteLine("") TextStream.WriteLine("She came in through the bathroom window protected by a silver spoon") TextStream.WriteLine("But now she sucks her thumb and wanders by the banks of her own lagoon") TextStream.WriteBlankLines(2) TextStream.Close End Sub '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' ' GetLyrics ' ' 目的： ' ' 显示 lyrics 文件的内容。 ' ' ' 示范下面的内容 ' ' - FileSystemObject.OpenTextFile ' - FileSystemObject.GetFile ' - TextStream.ReadAll ' - TextStream.Close ' - File.OpenAsTextStream ' - TextStream.AtEndOfStream ' - TextStream.ReadLine ' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' Function GetLyrics(FSO) Dim TextStream Dim S Dim File ' 有多种方法可用来打开一个文本文件，和多种方法来从文件读取数据。 ' 这儿用了两种方法来打开文件和读取文件： Set TextStream = FSO.OpenTextFile(TestFilePath & "\Beatles\OctopusGarden.txt", OpenFileForReading) S = TextStream.ReadAll & NewLine & NewLine TextStream.Close Set File = FSO.GetFile(TestFilePath & "\Beatles\BathroomWindow.txt") Set TextStream = File.OpenAsTextStream(OpenFileForReading) Do While Not TextStream.AtEndOfStream S = S & TextStream.ReadLine & NewLine Loop TextStream.Close GetLyrics = S End Function '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' ' BuildTestDirectory ' ' 目的： ' ' 创建一个目录分层结构来示范 FileSystemObject。 ' ' 以这样的次序来创建分层结构： ' ' C:\Test ' C:\Test\ReadMe.txt ' C:\Test\Beatles ' C:\Test\Beatles\OctopusGarden.txt ' C:\Test\Beatles\BathroomWindow.txt ' ' ' 示范下面的内容 ' ' - FileSystemObject.DriveExists ' - FileSystemObject.FolderExists ' - FileSystemObject.CreateFolder ' - FileSystemObject.CreateTextFile ' - Folders.Add ' - Folder.CreateTextFile ' - TextStream.WriteLine ' - TextStream.Close ' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' Function BuildTestDirectory(FSO) Dim TestFolder Dim SubFolders Dim SubFolder Dim TextStream ' 排除(a)驱动器不存在，或(b)要创建的目录已经存在的情况。 If Not FSO.DriveExists(TestDrive) Then BuildTestDirectory = False Exit Function End If If FSO.FolderExists(TestFilePath) Then BuildTestDirectory = False Exit Function End If Set TestFolder = FSO.CreateFolder(TestFilePath) Set TextStream = FSO.CreateTextFile(TestFilePath & "\ReadMe.txt") TextStream.WriteLine("My song lyrics collection") TextStream.Close Set SubFolders = TestFolder.SubFolders Set SubFolder = SubFolders.Add("Beatles") CreateLyrics SubFolder BuildTestDirectory = True End Function '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ' ' 主程序 ' ' 首先，它创建一个 test 目录，以及一些子文件夹和文件。 ' 然后，它转储有关可用磁盘驱动器和 test 目录的某些信息， ' 最后，清除 test 目录及其所有内容。 ' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' Sub Main Dim FSO ' 设立全局变量。 TabStop = Chr(9) NewLine = Chr(10) Set FSO = CreateObject("Scripting.FileSystemObject") If Not BuildTestDirectory(FSO) Then Print "Test directory already exists or cannot be created. Cannot continue." Exit Sub End If Print GenerateDriveInformation(FSO) & NewLine & NewLine Print GenerateTestInformation(FSO) & NewLine & NewLine Print GetLyrics(FSO) & NewLine & NewLine DeleteTestDirectory(FSO) End Sub
相信这个例子已经含盖了大部分的FSO的应用，大家可以根据这个例子来修改，得到自己
想要的功能，期待和大家交流：）
cpplus
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