浅默

@echo off
for /f "tokens=1* delims=:" %%i in ('findstr /n .* 1.txt') do (
    echo %%j>>3.txt
    for /f "tokens=1* delims=:" %%a in ('findstr /n .* 2.txt') do (
        if %%i==%%a echo %%b>>3.txt
    )
)   
pasle

浅默

@echo off
for /f "tokens=1* delims=:" %%i in ('findstr /n .* 1.txt') do set _%%i=%%j
for /f "tokens=1* delims=:" %%k in ('findstr /n .* 2.txt') do set _%%k.%%k=%%l
for /f "tokens=1* delims==" %%i in ('set _ ') do echo %%j
pause
要是就本题的几行上面的还行