如何自动转换十六进制代码在Java中使用它作为byte []？ [英] How to autoconvert hexcode to use it as byte[] in Java?

问题描述

我在这里有很多的十六进制代码，我想让它们进入Java而不会将0x附加到每个实体。像：

0102FFAB我必须做以下事情：

  byte [] test = {0x01，0x02，0xFF，0xAB}; 
  

我有很多很长的hexcode。有什么办法可以自动做到这一点？

解决方案

您可以尝试将十六进制代码放入一个字符串中，然后迭代字符串，与此类似：

  String input =0102FFAB; 
 byte [] bytes = new byte [input.length（）/ 2]; 
 
 for（int i = 0; i< input.length（）; i + = 2）
 {
 bytes [i / 2] = Integer.decode（0x + input.substring（i，i + 2））.byteValue（）; 
 
  

请注意，这需要甚至长度字符串，这是一个相当快速和肮脏的解决方案。不过，它仍应该让你开始。

I have many hexcodes here and I want to get them into Java without appending 0x to every entity. Like:

0102FFAB and I have to do the following:

byte[] test = {0x01, 0x02, 0xFF, 0xAB};

And I have many hexcodes which are pretty long. Is there any way to make this automatically?

解决方案

You could try and put the hex codes into a string and then iterate over the string, similar to this:

String input = "0102FFAB";
byte[] bytes = new byte[input.length() / 2];

for( int i = 0; i < input.length(); i+=2)
{
  bytes[i/2] = Integer.decode( "0x" + input.substring( i, i + 2 )  ).byteValue();
}

Note that this requires even length strings and it is quite a quick and dirty solution. However, it should still get you started.

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