went

注释很详细,ANSI保存
1.

@echo off
REM 输入url
set /p "url=copy url:"
REM 多个字符分割,按需要截取分段
for /f "tokens=1,2,3,5 delims=/?=&" %%i in ("%url%") do (
	set "A=%%i//%%j"
	set "B=%%k"
	set "c=%%l"
)
echo %A%
echo %B%
echo %C%
pause&exit
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2.

@echo off
if exist c.txt del c.txt
REM 如果a.txt只有一行内容,可以用set /p读取到变量
REM %a%=123
set /p a=<"a.txt"
REM for /f 读取b.txt内容,用","分割提取你的分段内容, %%i %%j %%k依次对应第1-3段内容
for /f "tokens=1-3 delims=," %%i in (b.txt) do (
	REM 合并a.txt的一行内容并输出
	echo %a%%%i >>c.txt
	echo %a%%%j >>c.txt
	echo %a%%%k >>c.txt
)
pause&exit
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went

回复 3# hxx


    截取 ...//.../.../?xx=xx格式的通用

@echo off
REM 输入url
REM "https://XXXXXXX/A/B/C/D/E/F/?rootId=zzzzzzz"
set /p "url=copy url:"
REM /分隔,取第1,2段 
REM %%i=https: %%j=XXXXXXX 
for /f "tokens=1,2 delims=/" %%i in ("%url%") do set "A=%%i//%%j"
REM ?分隔,取第一段
REM %%i=https://XXXXXXX/A/B/C/D/E/F/
for /f "tokens=1 delims=?" %%i in ("%url%") do set "B=%%i"
REM 替换
call set "B=%%B:%A%=%%"
REM =分隔,取第二段
REM %%i=zzzzzzz
for /f "tokens=2 delims==" %%i in ("%url%") do set "C=%%i"

echo %A%
echo %B%
echo %C%
pause&exit
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用for截取的字符串要有通用的格式,没规律的要根据实际截取