将Asci代码转换回相应的十六进制值 [英] Convert Asci code back to curresponding hex value

问题描述

大家好，



我需要323830303030346434313461343135383538346435323462343134343535333833303339333033363030303164346330303130313031313630343031303130353165303030653038316130643164303435323236



转换为2800004d414a4158584d524b41445538303930360001d4c001010116040101051e000e081a0d1d045226



其中32是2的asci，38的8。 30 of 0等



任何帮助？



非常感谢

Hi All,

I need to convert 323830303030346434313461343135383538346435323462343134343535333833303339333033363030303164346330303130313031313630343031303130353165303030653038316130643164303435323236

to 2800004d414a4158584d524b41445538303930360001d4c001010116040101051e000e081a0d1d045226

where 32 is the asci of 2 , 38 of 8 . 30 of 0 etc

Any help ?

Thanks alot

推荐答案

您只需要遍历每两位数字并将其首先转换为其基值：

You just need to go through each two digit number and convert it first to its base value thus:

if number >= 0x30 AND <= 0x39 // 0 to 9
    number -= 0x30
else if number number >= 0x41 AND <= 0x46 // A to F
    number = number - 0x41 + 10 // 10 to 15
else if number number >= 0x61 AND <= 0x66 // a to f
    number = number - 0x61 + 10 // 10 to 15

然后将其添加到目标字段的下一个4位部分。

then add it to the next 4 bit portion of your destination field.

一次将字符串拆分为两个字符的集合。

整数解析基数为16的分割部分。

转换为char。

Split the string into sets of two characters at a time.
Integer parse at base 16 the split parts.
Convert to char.

package mypackage;

public class Program {

    public static void main(String[] args) {
        final String input = "323830303030346434313461343135383538346435323462343134343535333833303339333033363030303164346330303130313031313630343031303130353165303030653038316130643164303435323236";
        final StringBuilder builder = new StringBuilder();
        for(int i = 0; i < (input.length() - 1); i += 2) {
            final String part = input.substring(i, i + 2);
            final int intValue = Integer.parseInt(part, 16); // 16 for base 16 here
            final char character = (char)intValue;
            builder.append(character);
        }
        System.out.println(builder.toString());
    }
}

希望这会有所帮助，

Fredrik

Hope this helps,
Fredrik

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