从文本文件读取变量 [英] Read a variable from a text file

问题描述

我正在尝试创建一个密码提示，该提示将用户输入与文本文件中的信息进行比较（密码保存在.txt文件中）。

I'm trying to create a password prompt which compares the user input to information in a text file (the password is saved in the .txt file).

我已经尝试使用通过命令提示符和此网站提供给我的信息，但是我无法使其正常工作，可能是因为我没有足够的经验，因为我不太熟悉高级批处理编码。

I've tried to work with information provided to me through the command prompt and and this website but I just can't get it to work, probably because i don't have sufficient experience as I'm rather new to advanced batch coding.

到目前为止，这是我想出的，文本文件的名称为Q47.txt，其中只有 hello一词，直到我可以使其工作：

This is what I've come up with so far, the name of the text file is Q47.txt and in it is just the word "hello" until I can get this to work:

@echo off  
:a  
cls  
SetLocal EnableDelayedExpansion  
set content=  
for /F "delims=" %%i in (Q47.txt) do set content=!content! %%i  
echo %content%  
EndLocal  

echo Enter password to continue:  
set /p "VAR=>"  
    if "%VAR%" == "%content%" (  
    goto begin  
    )  
echo Incorrect, please try again.  
pause >nul  
goto a      


:begin  
cls  
echo Welcome  
pause >nul      

请您告诉我我哪里出问题了。

Please can you tell me where I've gone wrong.

我还想知道如何消除变量前的空格。

I'd also like to know how to eliminate the space before the variable.

推荐答案

您可以尝试以下操作：

@ECHO OFF &SETLOCAL
:a  
set "content="  
for /F "tokens=*" %%i in (Q47.txt) do set "content=%%i" 
echo "%content%"  

echo Enter password to continue:  
set /p "VAR=>"  
if "%VAR%" == "%content%" goto begin  
echo Incorrect, please try again.  
pause >nul  
goto a      

:begin  
cls  
echo Welcome  
pause >nul      

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