即使使用EnableDelayedExpansion，也不会在for循环中扩展％时间百分比

问题描述：

所以我注意到％time％变量在批处理文件的日志中不准确，如下所示。输出包含在代码下面......当它进入for循环时，它获取当前时间，但不会在更新时进行更新。这些是大的zip文件，有时需要几分钟来解压缩每个文件。任何人都知道这里发生了什么？即使使用EnableDelayedExpansion，也不会在for循环中扩展％时间百分比

代码：

@echo off 
setlocal EnableDelayedExpansion 

for /f "tokens=1-26 delims=/:. " %%a in ('echo %date% %time%') do set today=%%d%%b%%c 
echo %date% %time% process start >> h:\logfiles\unzip\%today%.log 

:BANK1 
set bank=BANK1 
call:process BANK1LOCKBOX.lbx.6*.zip 
call:process BANK1LOCKBOX.lbx.3*.zip 

:BANK2 
set bank=BANK2 
call:process BANK2LOCKBOX.A*.zip PASSWORD1 
call:process BANK2LOCKBOX.R*.zip PASSWORD2 

echo %date% %time% process complete >> h:\logfiles\unzip\%today%.log 
goto:eof 

:process 
set thisfile=%1 
set pword=-y 
if not [%2] equ [] set pword=-p%2 -y 
if exist f:\banks\%bank%\zipped\%thisfile% (
    echo %time% %thisfile% begin >> h:\logfiles\unzip\%today%.log 
    for /f "tokens=1-2 delims=;" %%a in ('dir /b f:\banks\%bank%\zipped\%thisfile%') do (
     echo  %time% %%a start >> h:\logfiles\unzip\%today%.log 
     7z x f:\banks\%bank%\zipped\%%a -of:\banks\%bank%\* %pword% 
     if %errorlevel%==0 (
      move /y f:\banks\%bank%\zipped\%%a f:\banks\%bank%\processed\ 
      echo  %time% %%a complete >> h:\logfiles\unzip\%today%.log 
     ) 
    ) 
    if exist f:\banks\%bank%\zipped\%thisfile% (
     move /y f:\banks\%bank%\zipped\%thisfile% f:\banks\%bank%\unprocessed\ 
     echo  %time% %thisfile% failed >> h:\logfiles\unzip\%today%.log 
    ) 
    echo %time% %thisfile% end >> h:\logfiles\unzip\%today%.log 
)

，并将日志是这样的：

Tue 07/02/2013 10:40:55.70 process start 
    10:40:55.72 BANK1LOCKBOX.lbx.6*.zip begin 
     10:40:55.72 BANK1LOCKBOX.lbx.60.zip start 
     10:40:55.72 BANK1LOCKBOX.lbx.60.zip complete 
     10:40:55.72 BANK1LOCKBOX.lbx.64.zip start 
     10:40:55.72 BANK1LOCKBOX.lbx.64.zip complete 
    10:40:55.72 BANK1LOCKBOX.lbx.6*.zip end 
    10:41:14.02 BANK1LOCKBOX.lbx.3*.zip begin 
     10:41:14.02 BANK1LOCKBOX.lbx.391.zip start 
     10:41:14.02 BANK1LOCKBOX.lbx.391.zip complete 
     10:41:14.02 BANK1LOCKBOX.lbx.343.zip start 
     10:41:14.02 BANK1LOCKBOX.lbx.343.zip complete 
    10:41:14.02 BANK1LOCKBOX.lbx.3*.zip end 
    10:42:48.28 BANK2LOCKBOX.A*.zip begin 
     10:42:48.28 BANK2LOCKBOX.A_0_1.zip start 
     10:42:48.28 BANK2LOCKBOX.A_0_1.zip complete 
     10:42:48.28 BANK2LOCKBOX.A_6_1.zip start 
     10:42:48.28 BANK2LOCKBOX.A_6_1.zip complete 
     10:42:48.28 BANK2LOCKBOX.A_2_1.zip start 
     10:42:48.28 BANK2LOCKBOX.A_2_1.zip complete 
    10:42:48.28 BANK2LOCKBOX.A*.zip end 
    10:44:42.33 BANK2LOCKBOX.R*.zip begin 
     10:44:42.33 BANK2LOCKBOX.R_1359_1.zip start 
     10:44:42.33 BANK2LOCKBOX.R_1359_1.zip complete 
     10:44:42.33 BANK2LOCKBOX.R_1365_1.zip start 
     10:44:42.33 BANK2LOCKBOX.R_1365_1.zip complete 
     10:44:42.33 BANK2LOCKBOX.R_1371_1.zip start 
     10:44:42.33 BANK2LOCKBOX.R_1371_1.zip complete 
    10:44:42.33 BANK2LOCKBOX.R*.zip end 
Tue 07/02/2013 10:45:25.91 process complete

使用!time!而当我问，我无意中发现了答案...更新所有％的时间％，在瓦尔：处理步骤到！time !,并按预期进行更新。 –

答

％时间％像任何其他％VAR％在解析时被评估。然后该值代替执行，因此它不会改变。

如果你想在当前时间，你需要setlocl enabledelayedexpansion和到位的%time%

即使使用EnableDelayedExpansion，也不会在for循环中扩展％时间百分比

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