如何将Utf8字符转换为hexa [英] How do I convert Utf8 characters to hexa

问题描述

我已经创建了一个将十六进制转换为utf-8字符的程序。程序转换所有字符并结束;到utf8。但我想要的是反之亦然。



我不知道如何找到所有 uft8字符（例如.Éù）一个xml文件并将其转换为十六进制（&＃x00C9;&＃x00FA; ）

I already created a program that will convert hexadecimal to utf-8 characters. Program convert all the characters "" and ends ";" to utf8. But what I want is the vice-versa of this.

I don't know how will I find all the uft8 character (eg. É ù) in a xml file and convert this to hexadecimal (& #x00C9; & #x00FA;)

推荐答案

基本上，你有两个函数来获取一个字节数组（你称之为'十六进制字符'）到一个字符串，反之亦然：

Basically, you have two functions to get a byte array (what you call 'hexadecimal characters') to a string, and vice-versa:

using System.Text;

// Converting an UTF8 string to a byte array
string input = "whatever";
byte[] bytes = Encoding.UTF8.GetBytes(input);

// Converting a byte array back to its original string representation
string result = Encoding.UTF8.GetString(bytes);

一旦你有一个字节数组，以十六进制形式显示它的任务是微不足道的。以下是扩展方法中的示例实现：

Once you have a byte array, the task to display it in its hexadecimal form is trivial. Here's an example implementation in an extension method:

using System.Text;

public static string ToHexadecimalRepresentation(this byte[] bytes) {
   StringBuilder sb = new StringBuilder(bytes.Length << 1);
   foreach (byte b in bytes) {
      sb.AppendFormat("{0:X2}", b);
   }
   return sb.ToString();
}

希望这有帮助。

Hope this helps.

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