使用BAT文件时出错. -R在这个时候出乎意料

问题描述：

这是代码:

call n:\xxx\xxx\variables.bat %1 %2 %3 %4 %5 %6

set yourZipPassword=%xxx%
set yourFolderPath="n:\xxxx\xxxx\%xxxx%"

for /R "%yourFolderPath%" %%I in ("*.zip") do (
  "C:\Program Files\7-Zip\7z.exe" x -p%yourZipPassword% -y -o"%%~dpI" "%%~fI" 
)

不知道如何处理此错误-" R在当前是意外的."

Do not know what to do with this error - "R was unexpected at this time."

此bat文件停留在此行上，不再处理:

And this bat file stuck on this line and not processing anymore:

for /R "%yourFolderPath%" %%I in ("*.zip") do (

答

从...更改set语法:

set yourFolderPath="n:\xxxx\xxxx\%xxxx%"

...到以下内容(通常):

...to the following (in general):

set "yourFolderPath=n:\xxxx\xxxx\%xxxx%"

因此引号不再是值的一部分.当您在问题中遇到问题时，for /R循环(for /R "%yourFolderPath%")会收到像for /R ""n:\xxxx\xxxx\%xxxx%""这样的根路径，因此它被过度引用".尤其是在变量值中包含空格和/或特殊字符的情况下，这是一个问题.

So the quotes are no longer part of the value. As you have it in your question, the for /R loop (for /R "%yourFolderPath%") receives a root path like for /R ""n:\xxxx\xxxx\%xxxx%"", so it is "over-quoted". This constitutes a problem particularly in case there are white-spaces and/or special characters in the variable value.

更改后的set语法还有另一个优点:假设您使用问题的语法，有一个变量包含目录路径，另一个变量具有文件名:

The changed set syntax has got another advantage: Imagine you have a variable holding a directory path and another one holding a file name, using the syntax from your question:

set PDIR="D:\Data"
set FILE="file.ext"

现在让我们将这些值连接起来:

Now let us concatenate these values:

echo unquoted: %PDIR%\%FILE%
echo quoted: "%PDIR%\%FILE%"

返回的行是:

unquoted: "D:\Data"\"file.ext"
quoted: ""D:\Data"\"file.ext""

您会看到一些令人不安的报价.现在，让我们使用更改后的语法:

You can see there are some disturbing quotes. Now let us use the changed syntax:

set "PDIR=D:\Data"
set "FILE=file.ext"

echo unquoted: %PDIR%\%FILE%
echo quoted: "%PDIR%\%FILE%"

所以返回的行是:

unquoted: D:\Data\file.ext
quoted: "D:\Data\file.ext"

因此不再有令人不安的报价.

So there are no more disturbing quotes.

请注意，更改后的语法仅在命令扩展启用的情况下起作用，但这是默认设置Windows命令提示符cmd设置.

Note that the changed syntax only works with command extensions enabled, but this is the default setting for the Windows command prompt cmd anyway.

使用BAT文件时出错. -R在这个时候出乎意料

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