在 if exist 中使用 SET

在 if exist 中使用 SET
 set /p codename="Please enter the codename! "

 if exist %codename% = Candy, Sugar, Lollipop (
    echo The code you entered is not available.
 )

如果用户输入的 %codename% 如 Candy、Sugar 或 Lollipop 等,有没有办法让回声说“您输入的代码不可用”,然后暂停蝙蝠?

如果用户输入除这三个之外的任何其他内容,脚本将继续工作。

我怎样才能做到这一点?

答案1

您可以使用多个字符串来验证用户输入findstr

echo/%codename% |%__APPDIR__%findstr.exe "Candy Sugar Lollipop" >nul && goto :Next

1)echo/%codename%(字符串输入)至findstr(查找字符串),

2)使用/i 不区分大小写如果需要,如果不需要,删除/i

3)如果匹配,goto :next标签...如果没有,将执行下一行...

4)向用户显示回显/您的消息和超时,等待用户按任意键

5)goto :EOF(文件结束),与 exit/abort/quit 你的 bat 相同。


@echo off & setlocal

set /p codename="Please enter the codename! "

echo/%codename% |%__APPDIR__%findstr.exe "Candy  Sugar  Lollipop" >nul && goto :Next
echo/The code you entered is not available^!! & %__APPDIR__%timeout -1 & goto :EOF

:Next
rem ::  your code continue here...`

  • 观察。如果用户仅输入回车,您可以限制这一点:if !_cnt! equ 3
@echo off & setlocal EnableDelayedExpansion 

:loop

set /p codename="Please enter the codename! "

set /a "_cnt+=1+0"

if !_cnt! equ 3 (
    echo/Maximum number of attempts allowed exceeded^!!
    goto :Error ) else if "!codename!"=="" goto :loop

echo/!codename! |%__APPDIR__%findstr.exe "Candy  Sugar  Lollipop" >nul && goto :Next

:Error
echo/The code you entered is not available^!! & %__APPDIR__%timeout -1
endlocal & goto :EOF

:Next
rem ::  your code continue here...

答案2

如果存在,则变量内容的比较形式是错误的。正确的形式应该是:

If "%variable%"=="desired value" (command)

如果要对任何给定的允许值执行相同的命令,则可以使用如下 for 循环:

    For %%A In (Candy,Sugar,Lollipop) Do (
        If  /I "%codename%"=="%%A" (
            Call :CodeTrue
        )
    )

作为脚本末尾的函数

:CodeTrue
Pause
Rem other commands
Exit /b

答案3

如果你可以转到 PowerShell:

$NewName = Read-host -Prompt 'Please enter the codename!'
If ($NewName -in ('Candy', 'Sugar', 'Lollipop') ) { echo 'The code you entered is not available.'}


PS C:\> $NewName = Read-host -Prompt 'Please enter the codename!'
>> If ($NewName -in ('Candy', 'Sugar', 'Lollipop') ) { echo 'The code you entered is not available.'}
    Please enter the codename!: Candy
The code you entered is not available.
PS C:\>  

您需要真正的环境变量吗?

$NewName = Read-host -Prompt 'Please enter the codename!'
If ($NewName -in ('Candy', 'Sugar', 'Lollipop') ) {
   echo 'The code you entered is not available.'
}
Else {$env:CodeName = $NewName} # only exists within scope of procesd
    or
Else {[Environment]::SetEnvironmentVariable("CodeName", $NewName, "User")} # Persistant at user-level
    or (Requires Admin PowerShell Console. Not avaiable to creating process.)
Else {[Environment]::SetEnvironmentVariable("CodeName", $NewName, "Machine")} # Persistant at machine-level

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