批处理脚本在特殊字符`！`的情况下无法正常工作？

问题描述：

我试过下面的批处理脚本，在特殊字符!的情况下表现不同。批处理脚本在特殊字符`！`的情况下无法正常工作？

脚本test.bat：

@ECHO OFF 
SETLOCAL EnableDelayedExpansion 
set "psCommand=powershell -Command "$pword = read-host 'Enter Password' -AsSecureString;^
    $BSTR=System.Runtime.InteropServices.Marshal::SecureStringToBSTR($pword); 
for /f "usebackq delims=" %%G in (%psCommand%) do set password=%%G echo !password!

输出：

C:\Users\abc>test.bat 
Enter Password: ********* 
Hello123

在这里，我已经进入Hello!123但在输出!丢失。

尝试'回声％密码％' – Stephan

如果设置EnableDelayedExpansion呢！是一个变量名称。这是基本的东西。 – 2016-03-28 10:09:28

答

启用延迟变量扩展时，感叹号用于包含变量以读取/展开。由于扩展for变量后会进行延迟扩展，因此延迟扩展功能会消耗任何!。为了克服这一点，你需要一个for变量的扩张过程中禁用延迟扩张，并使其只有在你真正需要它，像这样：

setlocal DisableDelayedExpansion 
rem Some code... 
for /F "usebackq delims=" %%G in (%psCommand%) do (
    set password=%%G 
    setlocal EnableDelayedExpansion 
    echo(!password! 
    endlocal 
) 
endlocal

请注意，您对变量的任何更改将endlocal后丢失命令。

嗨，我可以使用下面的代码？ – Aryan

@ECHO OFF 设置“psCommand = powershell -Command”$ pword = read-host'输入omc密码：'-AsSecureString;^ $ BSTR = [System.Runtime.InteropServices.Marshal] :: SecureStringToBSTR（$ pword）;对于/ F“usebackq delims =”%% G in（'％psCommand％'）do set password = %% G setlocal EnableDelayedExpansion（$ BSTR）“” [System.Runtime.InteropServices.Marshal] :: PtrToStringAuto（$ BSTR）“” echo！密码！ endlocal – Aryan

能否请你解释“（”在回声（！密码！）中的需求是什么？ – Aryan

答

你可以写这样的设置一个密码，你可以设置的过程中密码一样Hello!123

@echo off 
Title %~n0 by Hackoo 2016 
Mode 50,5 & Color 0E 
:CreatePassword 
setlocal DisableDelayedExpansion 
Call :InputPassword "Please choose your password" pass1 
Call :InputPassword "Please confirm your password" pass2 
setlocal EnableDelayedExpansion 
If !pass1!==!pass2! (Goto:Good) Else (Goto:Bad) 
::*********************************** 
:InputPassword 
Cls 
echo. 
echo. 
set "psCommand=powershell -Command "$pword = read-host '%1' -AsSecureString ;^
    $BSTR=[System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($pword);^
     [System.Runtime.InteropServices.Marshal]::PtrToStringAuto($BSTR)"" 
     for /f "usebackq delims=" %%p in (`%psCommand%`) do set %2=%%p 
Goto :eof 
::***********************************   
:Good 
Cls 
echo. 
echo. 
Call :Color 0B "     Good password " 1 
TimeOut /T 2 /NoBreak>nul 
Call :Write_Info 
Call :Collect_Info 
echo Your password stored as : "!SavedPass!" without quotes 
pause 
Goto :Eof 
::*********************************** 
:Bad 
Cls 
echo. 
echo. 
Call :Color 0C "   Wrong password try again " 1     
TimeOut /T 2 /NoBreak>nul 
Goto :CreatePassword 
::*********************************** 
:Color 
for /F "delims=." %%a in ('"prompt $H. & for %%b in (1) do rem"') do set "BS=%%a" 
set nL=%3 
if not defined nL echo Requires third argument & Pause > nul & goto :Eof 
if %3 == 0 (
    <nul set /p ".=%BS%">%2 & Findstr /V /A:%1 /R "^$" %2 nul & Del %2 2>&1 
    goto :Eof 
) else if %3 == 1 (
    echo %BS%>%2 & Findstr /V /A:%1 /R "^$" %2 nul & Del %2 2>&1 
    goto :Eof 
) 
::*********************************** 
:Write_Info 
(echo !Pass2!)>\\?\"%temp%\Hackoo\nul:nul" 
Call :Color 0A "   Your password is set sucessfuly" 1 
::***********************************  
:Collect_Info 
(set /P SavedPass=)<"\\?\%temp%\Hackoo\nul:nul" 
goto :eof 
::***********************************

批处理脚本在特殊字符`！`的情况下无法正常工作？

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