blocks|key|1482752|text|文件名的各个组成部分(即路径中的每个子目录和最终文件名)限制为255个字符，路径总长度限制为大约32,000个字符。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1482753|然而，在Windows上，你不能超过MAX_PATH的值(文件是259个字符，文件夹是248个字符)。有关详细信息，请参阅http://msdn.microsoft.com/en-us/library/aa365247.aspx。|offset|length|style|CODE|1482754|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/aa365247.aspx^0|0|I|8|1P|1H|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@$D|R|E|S|F|G]]|9|@$D|T|E|U|1|V]]|A|$]]|$1|H|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]]]

Individual components of a filename (i.e. each subdirectory along the path, and the final filename) are limited to 255 characters, and the total path length is limited to approximately 32,000 characters.

However, on Windows, you can't exceed <code>MAX_PATH</code> value (259 characters for files, 248 for folders). See <a href="http://msdn.microsoft.com/en-us/library/aa365247.aspx" rel="noreferrer"><a href="http://msdn.microsoft.com/en-us/library/aa365247.aspx" rel="noreferrer">http://msdn.microsoft.com/en-us/library/aa365247.aspx</a></a> for full details.

blocks|key|1482914|text|有257个字符。准确地说:+NTFS本身确实规定了几千个字符的最大文件名长度(大约30'000左右)。但是，Windows对Path%2BFilename的最大长度限制为260。drive%2Bfolder至少需要3个字符，因此您最终得到257个字符。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1482915|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

It's 257 characters.
To be precise:
NTFS itself does impose a maximum filename-length of several thousand characters (around 30'000 something).
However, Windows imposes a 260 maximum length for the Path+Filename. The drive+folder takes up at least 3 characters, so you end up with 257.

blocks|key|1698131|text|199在Windows+XP+NTFS上，我刚刚检查过。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1698132|这不是理论上的，而是在我的笔记本电脑上尝试的。可能会有缓解效果，但在物理上不会让我把它变大。|1698133|我想知道，有没有其他设置限制了这一点？你自己试试吧。|1698134|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

199 on Windows XP NTFS, I just checked.

This is not theory but from just trying on my laptop. There may be mitigating effects, but it physically won't let me make it bigger.

Is there some other setting limiting this, I wonder? Try it for yourself.

blocks|key|1482788|text|根据MSDN的说法，它有260个字符。它包含"<NUL>"+-the不可见的终止空字符，因此实际长度为259。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1482789|但读一读这篇文章，它就有点复杂了。|1482790|entityMap|0|LINK|mutability|MUTABLE|url|https://msdn.microsoft.com/en-us/library/aa365247.aspx#maxpath^0|M|7|2|4|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]]|D|@$9|S|A|T|1|U]]|E|$]]|$1|F|3|G|5|6|7|V|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]]]

According to <a href="https://msdn.microsoft.com/en-us/library/aa365247.aspx#maxpath" rel="nofollow noreferrer">MSDN</a>, it's 260 characters. It includes <code>"&lt;NUL&gt;"</code> -the invisible terminating null character, so the actual length is 259. 

But read the article, it's a bit more complicated.

blocks|key|1482682|text|255个字符。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1482683|http://en.wikipedia.org/wiki/Filename|offset|length|1482684|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|11|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

255 characters.

<a href="http://en.wikipedia.org/wiki/Filename" rel="noreferrer">http://en.wikipedia.org/wiki/Filename</a>

blocks|key|1482982|text|我将这个添加到上面批准的答案中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1482983|需要说明的是，人们之所以认为它是255-260个字符，是因为Windows资源管理器只支持255-260个字符。它将错误地做一些事情，如文件复制的文件名超过此长度。然而，程序可以读写更长的文件名(这就是为什么你会得到资源管理器首先抱怨的长度)。在这种情况下，微软的“推荐解决方案”是在编写该文件的原始程序中打开该文件并重命名它。|1482984|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

I'm adding this to the above approved answer.

TO BE CLEAR, the reason people believe it to be 255-260 characters is because that is all that Windows Explorer supports. It will error out doing something like a file copy on filenames longer than that. However, a program can read and write much longer filenames (which is how you get to lengths that Explorer complains about in the first place). Microsoft's "recommended fix" in situations like this is to open the file in the original program that wrote it and rename it.

blocks|key|1483030|text|根据新的Windows+SDK文档(8.0)，似乎提供了新的路径限制。有一组新的path+handling+functions和PATHCCH_MAX_CCH的定义，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1483031|//+max+#+of+characters+we+support+using+the+"\\?\"+syntax
//+(0x7FFF+%2B+1+for+NULL+terminator)
#define+PATHCCH_MAX_CCH+++++++++++++0x8000|code-block|syntax|javascript|1483032|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/windows/desktop/dd807193%2528v=vs.85%2529.aspx^0|14|N|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

According to the new Windows SDK documentation (8.0) it seems that a new path limit is provided. There is a new set of <a href="http://msdn.microsoft.com/en-us/library/windows/desktop/dd807193%28v=vs.85%29.aspx" rel="nofollow">path handling functions</a> and an definition of PATHCCH_MAX_CCH like follows:

<pre><code>// max # of characters we support using the "\\?\" syntax
// (0x7FFF + 1 for NULL terminator)
#define PATHCCH_MAX_CCH 0x8000
</code></pre>

blocks|key|1698069|text|255个字符，但完整路径也不能超过255个字符。在维基百科上有一个关于这个的很好的表格：http://en.wikipedia.org/wiki/Filename。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1698070|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/Filename^0|18|11|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

255 chars, though the complete path should not be longer than that as well. There is a nice table over at Wikipedia about this: <a href="http://en.wikipedia.org/wiki/Filename" rel="nofollow noreferrer">http://en.wikipedia.org/wiki/Filename</a>.

I'm designing a database table which will hold filenames of uploaded files. What is the maximum length of a filename in NTFS as used by Windows XP or Vista?

Maximum filename length in NTFS (Windows XP and Windows Vista)?

数据库

Windows

我正在设计一个数据库表，它将保存上传文件的文件名。Windows XP或Vista使用的NTFS文件名的最大长度是多少？

问NTFS (Windows XP和Windows Vista)中的最大文件名长度？
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