@echo off
for /f "tokens=1-2 delims=^|" %%a in (1.txt) do echo %%b>>2.txt
复制代码

@echo off
(for /f "tokens=1-2 delims=|" %%a in (1.txt) do (
    if "%%b" neq "" (
        echo,%%b
    ) else (
        echo,%%a
    ) 
))>2.txt
复制代码