Question

我正在尝试获取代码，浏览并删除所有标记，然后将其写入新文档testfile.txt。出于某种原因，我在第5行遇到错误：设置ts = f.openastextstream（forwriting，tristateusedefault）并得到错误无效的程序。这是我的代码：

Sub elizabethwhite()
Set fs = CreateObject("scripting.filesystemobject")
fs.createtextfile "testfile.txt"
Set f = fs.getfile("testfile.txt")
Set ts = f.openastextstream(forwriting, tristateusedefault)

textline = ""
Do While f.opentextstream(forwriting, tristateusedefault).atendofstream <> True
textline = textline & f.opentextstream(forwriting, tristateusedefault).readline & "<BR>"

count = 0
pOne = 1
Do While InStr(textline, "<img") <> 0
count = count + 1
pOne = InStr(pOne, textline, "<img")

Do While InStr(pOne, textline, ">") = 0 & ts.atendofstream <> True
pTwo = InStr(pOne, textline, ">")
Loop

If 0 < count < 10 Then
textline = Left(textline, pOne - 1) & "{{image00" & count & ".jpg}}" & Right(textline, pTwo + 1)
ElseIf 9 < count < 100 Then
textline = Left(textline, pOne - 1) & "{{image0" & count & "}}.jpg" & Right(textline, pTwo + 1)
End If
Loop
Loop
ts.write textline
ts.Close

End Sub

Answer 1

正确声明您的变量，并使用Option Explict来识别问题。不是说，这些是开发的好习惯，可以帮助你编写更好的代码。它们还启用了脚本辅助功能，非常方便。

问题是您尚未启用对MS Scripting Runtime库 AND 的引用，因此，ForReading和TriStateUseDefault被编译器解释为变量，它们是没有值的变量，因此您将无效参数传递给OpenAsTextStream方法。

Option Explicit会帮助您发现此错误：

Option Explicit helps identify errors with uninitialized variables

如果您添加对Microsoft Scripting Runtime的引用，您的代码将按原样运行，但仍会敦促您按类型声明所有变量，并使用Option Explicit。两者都将为您节省很多麻烦：）

enter image description here

Sub elizabethwhite()

    Dim fs As New Scripting.FileSystemObject
    Dim f As Scripting.File
    Dim ts As Scripting.TextStream


    fs.CreateTextFile "testfile.txt"
    Set f = fs.getfile("testfile.txt")

    Set ts = f.OpenAsTextStream(ForWriting, TristateUseDefault)

    ts.WriteLine "Hello!"

    '
    '### The rest of your code goes here... remember to declare any other variables :)
    '

    Set ts = Nothing
    Set f = Nothing
    Set fs = Nothing

End Sub

另请参阅（有关OpenAsTextStream方法的文档）：

http://msdn.microsoft.com/en-us/library/aa265341(v=vs.60).aspx

Answer 2

当我尝试将unicode字符串写入非unicode文本文件时出现此错误。您有两种选择：

明确地将文件作为unicode打开

Set ts = f.OpenAsTextStream(ForWriting, TristateTrue)

在写入文件之前将字符串从unicode转换为ASCII

以下代码将帮助您在写入文件之前从输出字符串中删除unicode字符：

    Dim regex
    Set regex = CreateObject("vbscript.regexp")
    With regex
        .Global = True
        .Pattern = "[^\u0000-\u007F]+"
    End With
    MsgBox regex.Replace(Replace(yourStringHere, Chr(160), Chr(32)), vbNullString)

内部替换功能只是标准的VBA替换，它将一个空白字符转换为另一个空格字符。我不得不添加它，因为正则表达式替换剥离了字符\ u00A0也是出于某种原因。

所以你的代码将是：

    Sub elizabethwhite()

    Dim regex
    Set regex = CreateObject("vbscript.regexp")
    With regex
        .Global = True
        .Pattern = "[^\u0000-\u007F]+"
    End With

    Set fs = CreateObject("scripting.filesystemobject")
    fs.createtextfile "testfile.txt"
    Set f = fs.getfile("testfile.txt")
    Set ts = f.openastextstream(forwriting, tristateusedefault)

    textline = ""
    Do While f.opentextstream(forwriting, tristateusedefault).atendofstream <> True
    textline = textline & f.opentextstream(forwriting, tristateusedefault).readline & "                <BR>"

    count = 0
    pOne = 1
    Do While InStr(textline, "<img") <> 0
    count = count + 1
    pOne = InStr(pOne, textline, "<img")

    Do While InStr(pOne, textline, ">") = 0 & ts.atendofstream <> True
    pTwo = InStr(pOne, textline, ">")
    Loop

    If 0 < count < 10 Then
    textline = Left(textline, pOne - 1) & "{{image00" & count & ".jpg}}" &         Right(textline, pTwo + 1)
    ElseIf 9 < count < 100 Then
    textline = Left(textline, pOne - 1) & "{{image0" & count & "}}.jpg" &         Right(textline, pTwo + 1)
    End If
    Loop
    Loop
    ts.write regex.Replace(Replace(textline, Chr(160), Chr(32)), vbNullString)
    ts.Close

    End Sub

剥离unicode字符只是诊断的快速修复。您可能需要进行更彻底的故障排除（也许可以对unicode字符进行一些翻译，而不是简单地剥离它们。）

试图将文本写入文件错误'5'

2 个答案: