Windows 批处理文件 - 系统找不到指定的批处理标签
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Windows batch file - The system cannot find the batch label specified
提问by csauve
The Problem
问题
I'm having a problem with a Windows batch file and labels. I keep getting this error:
我的 Windows 批处理文件和标签有问题。我不断收到此错误：
The system cannot find the batch label specified
系统找不到指定的批次标签
What I've tried
我试过的
- Two computers; a WindowsXP and a 2003 Server.
- Made sure it was encoded as ASCII
- Editted the hex code for the line continuation characters. Tried replacing all with CR , LF, and CRLF in turn. All combinations give me the same error.
- Tried inserting extra characters before the label to make the label past 512 characters.
- 两台电脑；一个 WindowsXP 和一个 2003 服务器。
- 确保它被编码为 ASCII
- 编辑了行继续符的十六进制代码。尝试用 CR 、 LF 和 CRLF 依次替换 all 。所有组合都给我同样的错误。
- 尝试在标签前插入额外的字符以使标签超过 512 个字符。
Here is the code:
这是代码：
cls
@echo off
SET zip=7za a dependencies.7z
call:dozip "c:\temp\dir.txt"
pause
goto exit
:dozip
echo Testing 1.2.3...
%zip% %1
goto:eof
:exit
Here's the hex with CRLF (0d 0a).
这是带有 CRLF (0d 0a) 的十六进制。
63 6c 73 0d 0a 53 45 54 20 7a 69 70 3d 37 7a 61 20 61 20 64 65 70 65 6e 64 65 6e 63 69 65 73 2e 37 7a 0d 0a 63 61 6c 6c 3a 64 6f 7a 69 70 20 22 63 3a 5c 74 65 6d 70 5c 64 69 72 2e 74 78 74 22 0d 0a 0d 0a 70 61 75 73 65 0d 0a 67 6f 74 6f 20 65 78 69 74 0d 0a 0d 0a 3a 64 6f 7a 69 70 0d 0a 20 20 65 63 68 6f 20 54 65 73 74 69 6e 67 20 31 2e 32 2e 33 2e 2e 2e 0d 0a 20 20 25 7a 69 70 25 20 25 31 0d 0a 67 6f 74 6f 3a 65 6f 66 0d 0a 3a 65 78 69 74
Here's the console's output (when I remove @echo off):
这是控制台的输出（当我删除 @echo off 时）：
C:\>SET zip=7za a dependencies.7z
C:\>call:dozip "c:\temp\dir.txt"
C:\>echo Testing 1.2.3...
Testing 1.2.3...
C:\>7za a dependencies.7z "c:\temp\dir.txt"
The system cannot find the batch label specified - dozip
C:\>pause
Press any key to continue . . .
It never actually creates the 7zip file, so I think I can assume that its crashing on this line;
它实际上从未创建 7zip 文件，所以我想我可以假设它在这一行崩溃了；
7za a dependencies.7z "c:\temp\dir.txt"
If I run that line by itself from a command prompt, it works fine and creates the dependencies.7z, so I don't think its necessarily a problem with 7za.exe.
如果我从命令提示符单独运行该行，它可以正常工作并创建依赖项.7z，所以我认为它不一定是 7za.exe 的问题。
I've already read this stackoverflow question: stackoverflow.com/questions/232651/why-the-system-cannot-find-the-batch-label-specified-is-thrown-even-if-label-ex
我已经阅读过这个 stackoverflow 问题：stackoverflow.com/questions/232651/why-the-system-cannot-find-the-batch-label-specified-is-thrown-even-if-label-ex
and the link from that post; help.wugnet.com/windows/system-find-batch-label-ftopict615555.html
以及该帖子的链接；help.wugnet.com/windows/system-find-batch-label-ftopict615555.html
The Answer
答案
So, I found the problem guys.
所以，我发现了问题的家伙。
I was using a technique I commonly use that I could only really describe as "proxy" batch files. I have a folder called c:\scripts, and I put several bat files in there to target commonly used exes. This saves my PATH variable from becoming absolutely massive with all of my command line tools. This way I only need to add c:\scripts to my PATH, and create a proxy batch file when I need something.
我正在使用一种我经常使用的技术，我只能将其描述为“代理”批处理文件。我有一个名为 c:\scripts 的文件夹，我在里面放了几个 bat 文件来定位常用的 exe。这使我的 PATH 变量免于使用我的所有命令行工具变得绝对庞大。这样我只需要将 c:\scripts 添加到我的 PATH 中，并在需要时创建一个代理批处理文件。
I had 7za.bat in c:\scripts, containing only this;
我在 c:\scripts 中有 7za.bat，只包含这个；
@echo off
"C:\Program Files-zipza.exe" %*
I changed my script to this;
我把我的脚本改成了这个；
SET zip="c:\program files-zipza.exe" a dependencies.7z
instead of this;
而不是这个；
SET zip=7za a dependencies.7z
and it worked flawlessly.
它完美无缺。
The moral of the story...
这个故事的主旨...
Avoid calling other batch files from within a batch file. If you do, you will need to prefix them with "call".
避免从批处理文件中调用其他批处理文件。如果你这样做，你需要在它们前面加上“ call”。
采纳答案by nobody
I would point out that the "Testing 1.2.3..." and "Press any key to continue . . ." lines indicate that execution has successfully gone to the :dozip label and then successfully returned to the caller.
我要指出的是“测试 1.2.3...”和“按任意键继续...” 行表示执行已成功转到 :dozip 标签，然后成功返回给调用者。
Is the "7za" executable actually a batch file? If I modify my test script to have the helper be a batch file, I get the same error. The fix is to do 'call %zip% %1'
“7za”可执行文件实际上是批处理文件吗？如果我修改我的测试脚本以使帮助程序成为批处理文件，则会出现相同的错误。解决方法是执行“呼叫 %zip% %1”
回答by Anders
the moral of the story: when calling external programs/batch files in a batch file, use call
故事的寓意：在批处理文件中调用外部程序/批处理文件时，使用 call
call foo.bat
and/or
和/或
call %foo%
(Calling one batch from another has been done since the days of DOS, just remember to call)
（从 DOS 时代就已经完成了从另一个批次调用，只要记得调用）
回答by Doug
The "The system cannot find the batch label specified" error message brought me here (10 years later!) and the problem turned out to be the CRLF was incorrect.
“系统找不到指定的批次标签”错误消息将我带到这里（10 年后！），结果证明 CRLF 不正确。
The cause, in our case, was a Git Repository that didn't recognize BAT files as being text files which needed to be CRLF on a Windows 7 machine.
在我们的案例中，原因是 Git 存储库无法将 BAT 文件识别为需要在 Windows 7 机器上进行 CRLF 的文本文件。
Our solution was to create a .gitattributes file containing the line:
我们的解决方案是创建一个包含以下行的 .gitattributes 文件：
*.bat text eol=crlf
Then deleting the BAT files and checking out from the repository re-wrote our BAT files with the correct line endings. The BAT labels are now working again.
然后删除 BAT 文件并从存储库中检出以正确的行结尾重新编写了我们的 BAT 文件。BAT 标签现在又开始工作了。
回答by system PAUSE
One possibility, although it seems unlikely, is that command extensions aren't enabled, or up-to-date, and this is interfering with call/goto/label behaviour.
一种可能性（尽管看起来不太可能）是命令扩展未启用或未更新，这会干扰 call/goto/label 行为。
Try:
尝试：
echo [%cmdextversion%]
and if it's less than [2](or empty -- []) then check to see if cmd.exeis being invoked with /e:off, or just run
如果它小于[2]（或空 -- []）然后检查是否cmd.exe正在被调用/e:off，或者只是运行
cmd /e:on
in the console window where you will run this batch file.
在您将运行此批处理文件的控制台窗口中。
回答by system PAUSE
Looking closely at your hex, it does not actually have all CRLF (0d 0a). Several lines end in LF-only (0awithout a preceding 0d).
仔细观察你的十六进制，它实际上并没有全部 CRLF ( 0d 0a)。几行以 LF-only 结尾（0a没有前面的0d）。
Check in your hex editor to make sure every0ais preceded by 0d(exactly one).
检查您的十六进制编辑器以确保每个0a都以0d（恰好一个）开头。
Or just cut and paste your file into a blank Notepad document and re-save it.
或者只是将您的文件剪切并粘贴到空白的记事本文档中，然后重新保存。
回答by Jacob
Are you using Windows NT 4/Windows 2000? Only there can you use CALL to call subroutines within the same batch file.
您使用的是Windows NT 4/Windows 2000吗？只有在那里你才能使用 CALL 来调用同一个批处理文件中的子程序。
