bailong360

@echo off
setlocal enabledelayedexpansion
for /f "delims=" %%i in ('dir /b *.txt') do (
    set "FileName=%%~ni"
    set "FileName=!FileName:.=$ !"
    set "NewName=$"
    for %%j in (!FileName!) do (
        set "TmpName=%%j"
        if not "!TmpName:~-1!"=="$" (
            for /l %%k in (0 1 9) do set "TmpName=!TmpName:%%k=%%k《!"
            for /l %%k in (0 1 9) do set "TmpName=!TmpName:《%%k=%%k!"
            set "NewName=!NewName!.!TmpName!》"
        ) else set "NewName=!NewName!.!TmpName:~0,-1!"
    )
    echo ren "%%~nxi" "!NewName:$.=!%%~xi"
)
pause
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9楼的第三方解法多方便,又迅速
确认无误后将echo去掉

@for /f "delims=" %%i in ('dir /a-d /b *.txt^|ssed -R "s/([0-9.]+)(.*?)(\.txt)/\"\0\" \"\1《\2》\3\"/g"') do @ren %%i
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来个ssed的
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话说,LZ你的文件是真的没有后缀还是后缀被你省略掉了??