转换逃脱字符串ByteArray或流; C＃ [英] Convert escaped string to bytearray or stream; c#

问题描述

我的输入字符串包括在混合与常规的Unicode字符转义字符的混合物，例如：

  \\\\\ \\\\\\\timestamp\\\clientId\\\timeToLive\\\destination\\\headers\tbody\\\messageId\\\
\\\ 
  

我怎么可以转换这个转换为bytearray或流

编辑：UTF + 8编码。为了澄清输入字符串：

 字符01：U + 0000 
字符02：U + 0003 
字符03：U + 0000 
字符04：U + 0013 
字符05：T已
字符06：我
字符07：M 
字符08：电子
字符09：■
字符10：T已
字符11：一个
字符12：M 
字符13：p 
字符14：U + 0011 
 ... 
 ... 
  

解决方案

好了，你已经得到了一个任意字符串（它包含非打印字符其实是无关紧要的），并且希望将其转换成使用UTF-8字节数组。这很简单：）

 字节[]字节= Encoding.UTF8.GetBytes（文本）; 
  

或者写一个流，你通常包装在一个 StreamWriter的：

  //需要注意的是，由于使用的语句，这将在关闭流使用块
（VAR作家=新的StreamWriter（流））
 {
 writer.Write（文本）结束
 //; 
} 
  

（UTF-8是默认编码的StreamWriter ，但可以明确的过程中指定。）

我假设你真的有一个很好的理由有文在这虽然形成。我不能说我曾经发现一个使用了U + 0003（文本结束）。如果像I4V曾建议，这一数据在二进制流本来，你应该避免处理它作为摆在首位的文本。从您的文本数据分离出来的二进制数据 - 当你将它们混合，它的将会的导致问题。 （例如，如果你的字符串中的第四个字符是U + 00FF，那么，当编码成UTF-8，这可能不会是你想要的最后两个字节）。

My input string consists of a mixture of unicode escape characters with regular characters mixed in. Example:

\u0000\u0003\u0000\u0013timestamp\u0011clientId\u0015timeToLive\u0017destination\u000fheaders\tbody\u0013messageId\u0001\u0006

How can I convert this into a bytearray or Stream?

EDIT: UTF+8 encoding. To clarify the input string:

Char 01: U+0000
Char 02: U+0003
Char 03: U+0000
Char 04: U+0013
Char 05: t
Char 06: i
Char 07: m
Char 08: e
Char 09: s
Char 10: t
Char 11: a
Char 12: m
Char 13: p
Char 14: U+0011
...
...    

解决方案

Okay, so you've got an arbitrary string (the fact that it contains non-printable characters is irrelevant) and you want to convert it into a byte array using UTF-8. That's easy :)

byte[] bytes = Encoding.UTF8.GetBytes(text);

Or to write to a stream, you'd normally wrap it in a StreamWriter:

// Note that due to the using statement, this will close the stream at the end
// of the block
using (var writer = new StreamWriter(stream))
{
    writer.Write(text);
}

(UTF-8 is the default encoding for StreamWriter, but you can specify it explicitly of course.)

I'm assuming you really have a good reason to have "text" in this form though. I can't say I've ever found a use for U+0003 (END OF TEXT). If, as I4V has suggested, this data was originally in a binary stream, you should avoid handling it as text in the first place. Separate out your binary data from your text data - when you mix them, it will cause issues. (For example, if the fourth character in your string were U+00FF, it would end up as two bytes when encoded to UTF-8, which probably wouldn't be what you wanted.)

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