我有一个应用程序，发送一个POST请求到VB论坛软件，并登录某人(没有设置cookie或任何东西)。
一旦用户登录，我就创建一个变量，在他们的本地机器上创建一个路径。
c: \用户tempfolder枣\
问题是一些用户名抛出“非法字符”异常。例如，如果我的用户名是mas|fenix，它会抛出一个异常。
Path.Combine( _
Environment.GetFolderPath(System.Environment.SpecialFolder.CommonApplicationData), _
DateTime.Now.ToString("ddMMyyhhmm") + "-" + form1.username)
我不想从字符串中删除它，但是通过FTP在服务器上创建了一个具有其用户名的文件夹。这就引出了我的第二个问题。如果我在服务器上创建一个文件夹，我可以留下“非法字符”吗?我问这个问题是因为服务器是基于Linux的，我不确定Linux是否接受它。
编辑:似乎URL编码不是我想要的..这就是我想做的:
old username = mas|fenix
new username = mas%xxfenix
其中%xx是ASCII值或任何其他容易识别字符的值。
Levi Botelho评论说，以前生成的编码表对于。net 4.5来说不再准确了，因为在。net 4.0和4.5之间，编码发生了轻微的变化。因此，我重新生成了。net 4.5的表:
Unencoded UrlEncoded UrlEncodedUnicode UrlPathEncoded WebUtilityUrlEncoded EscapedDataString EscapedUriString HtmlEncoded HtmlAttributeEncoded WebUtilityHtmlEncoded HexEscaped
A A A A A A A A A A %41
B B B B B B B B B B %42
a a a a a a a a a a %61
b b b b b b b b b b %62
0 0 0 0 0 0 0 0 0 0 %30
1 1 1 1 1 1 1 1 1 1 %31
[space] + + %20 + %20 %20 [space] [space] [space] %20
! ! ! ! ! %21 ! ! ! ! %21
" %22 %22 " %22 %22 %22 " " " %22
# %23 %23 # %23 %23 # # # # %23
$ %24 %24 $ %24 %24 $ $ $ $ %24
% %25 %25 % %25 %25 %25 % % % %25
& %26 %26 & %26 %26 & & & & %26
' %27 %27 ' %27 %27 ' ' ' ' %27
( ( ( ( ( %28 ( ( ( ( %28
) ) ) ) ) %29 ) ) ) ) %29
* * * * * %2A * * * * %2A
+ %2b %2b + %2B %2B + + + + %2B
, %2c %2c , %2C %2C , , , , %2C
- - - - - - - - - - %2D
. . . . . . . . . . %2E
/ %2f %2f / %2F %2F / / / / %2F
: %3a %3a : %3A %3A : : : : %3A
; %3b %3b ; %3B %3B ; ; ; ; %3B
< %3c %3c < %3C %3C %3C < < < %3C
= %3d %3d = %3D %3D = = = = %3D
> %3e %3e > %3E %3E %3E > > > %3E
? %3f %3f ? %3F %3F ? ? ? ? %3F
@ %40 %40 @ %40 %40 @ @ @ @ %40
[ %5b %5b [ %5B %5B [ [ [ [ %5B
\ %5c %5c \ %5C %5C %5C \ \ \ %5C
] %5d %5d ] %5D %5D ] ] ] ] %5D
^ %5e %5e ^ %5E %5E %5E ^ ^ ^ %5E
_ _ _ _ _ _ _ _ _ _ %5F
` %60 %60 ` %60 %60 %60 ` ` ` %60
{ %7b %7b { %7B %7B %7B { { { %7B
| %7c %7c | %7C %7C %7C | | | %7C
} %7d %7d } %7D %7D %7D } } } %7D
~ %7e %7e ~ %7E ~ ~ ~ ~ ~ %7E
Ā %c4%80 %u0100 %c4%80 %C4%80 %C4%80 %C4%80 Ā Ā Ā [OoR]
ā %c4%81 %u0101 %c4%81 %C4%81 %C4%81 %C4%81 ā ā ā [OoR]
Ē %c4%92 %u0112 %c4%92 %C4%92 %C4%92 %C4%92 Ē Ē Ē [OoR]
ē %c4%93 %u0113 %c4%93 %C4%93 %C4%93 %C4%93 ē ē ē [OoR]
Ī %c4%aa %u012a %c4%aa %C4%AA %C4%AA %C4%AA Ī Ī Ī [OoR]
ī %c4%ab %u012b %c4%ab %C4%AB %C4%AB %C4%AB ī ī ī [OoR]
Ō %c5%8c %u014c %c5%8c %C5%8C %C5%8C %C5%8C Ō Ō Ō [OoR]
ō %c5%8d %u014d %c5%8d %C5%8D %C5%8D %C5%8D ō ō ō [OoR]
Ū %c5%aa %u016a %c5%aa %C5%AA %C5%AA %C5%AA Ū Ū Ū [OoR]
ū %c5%ab %u016b %c5%ab %C5%AB %C5%AB %C5%AB ū ū ū [OoR]
列表示编码如下:
UrlEncoded: HttpUtility。UrlEncode
UrlEncodedUnicode: HttpUtility。UrlEncodeUnicode
UrlPathEncoded: HttpUtility。UrlPathEncode
WebUtilityUrlEncoded: WebUtility。UrlEncode
EscapedDataString: Uri。EscapeDataString
EscapedUriString: Uri。EscapeUriString
HtmlEncoded: HttpUtility。HtmlEncode
HtmlAttributeEncoded: HttpUtility。HtmlAttributeEncode
WebUtilityHtmlEncoded: WebUtility。HtmlEncode
HexEscaped: Uri。HexEscape
注:
HexEscape只能处理前255个字符。因此，它对拉丁a扩展字符抛出ArgumentOutOfRange异常(例如Ā)。
该表是在。net 4.5中生成的(有关。net 4.0及以下的编码，请参阅https://stackoverflow.com/a/11236038/216440)。
编辑:
作为Discord回答的结果，我添加了新的WebUtility UrlEncode和HtmlEncode方法，这是在。net 4.5中引入的。
Ideally these would go in a class called "FileNaming" or maybe just rename Encode to "FileNameEncode". Note: these are not designed to handle Full Paths, just the folder and/or file names. Ideally you would Split("/") your full path first and then check the pieces.
And obviously instead of a union, you could just add the "%" character to the list of chars not allowed in Windows, but I think it's more helpful/readable/factual this way.
Decode() is exactly the same but switches the Replace(Uri.HexEscape(s[0]), s) "escaped" with the character.
public static List<string> urlEncodedCharacters = new List<string>
{
"/", "\\", "<", ">", ":", "\"", "|", "?", "%" //and others, but not *
};
//Since this is a superset of urlEncodedCharacters, we won't be able to only use UrlEncode() - instead we'll use HexEncode
public static List<string> specialCharactersNotAllowedInWindows = new List<string>
{
"/", "\\", "<", ">", ":", "\"", "|", "?", "*" //windows dissallowed character set
};
public static string Encode(string fileName)
{
//CheckForFullPath(fileName); // optional: make sure it's not a path?
List<string> charactersToChange = new List<string>(specialCharactersNotAllowedInWindows);
charactersToChange.AddRange(urlEncodedCharacters.
Where(x => !urlEncodedCharacters.Union(specialCharactersNotAllowedInWindows).Contains(x))); // add any non duplicates (%)
charactersToChange.ForEach(s => fileName = fileName.Replace(s, Uri.HexEscape(s[0]))); // "?" => "%3f"
return fileName;
}
感谢@simon-tewsi提供的非常有用的表格!
