HttpUtility.HtmlEncode不编码一切 [英] HttpUtility.HtmlEncode doesn't encode everything

问题描述

我与使用C＃和.NET 3.5桌面客户端程序的Web服务器进行交互。我使用小提琴手看到Web浏览器发送哪些流量，并模拟了。可悲的是这台服务器是旧的，并且是一个有点困惑的字符集和UTF-8的概念。主要是它采用的Latin-1。

I am interacting with a web server using a desktop client program in C# and .Net 3.5. I am using Fiddler to see what traffic the web browser sends, and emulate that. Sadly this server is old, and is a bit confused about the notions of charsets and utf-8. Mostly it uses Latin-1.

当我输入数据包含特殊的字符，如Ωπℵ∞♣♥
♈Web浏览器♉ ♊♋♌♍♎♏♐♑♒♓提琴手告诉我，他们正在传输从浏览器进行如下服务器：&放大器;＃9800;&放大器;＃9801;&放大器;＃9802;&安培; ＃9803;&放大器;＃9804;&放大器;＃9805;&放大器;＃9806;&放大器;＃9807;&放大器;＃9808;&放大器;＃9809;&放大器;＃9810;&放大器;＃9811;

When I enter data into the Web browser containing "special" chars, like "Ω π ℵ ∞ ♣ ♥ ♈ ♉ ♊ ♋ ♌ ♍ ♎ ♏ ♐ ♑ ♒ ♓" fiddler show me that they are being transmitted as follows from browser to server: "♈ ♉ ♊ ♋ ♌ ♍ ♎ ♏ ♐ ♑ ♒ ♓ "

但对于我的客户，HttpUtility.HtmlEncode不转换这些字符，这使他们原样。什么我需要调用转换♈到&放大器;＃9800;等等？

But for my client, HttpUtility.HtmlEncode does not convert these characters, it leaves them as is. What do I need to call to convert "♈" to ♈ and so on?

推荐答案

这似乎太没效率了，但我觉得这样做的唯一途径是通过每个人物看：

It seems horribly inefficient, but the only way I can think to do that is to look through each character:

public static string MyHtmlEncode(string value)
{
   // call the normal HtmlEncode first
   char[] chars = HttpUtility.HtmlEncode(value).ToCharArray();
   StringBuilder encodedValue = new StringBuilder();
   foreach(char c in chars)
   {
      if ((int)c > 127) // above normal ASCII
         encodedValue.Append("&#" + (int)c + ";");
      else
         encodedValue.Append(c);
   }
   return encodedValue.ToString();
}

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