Java字符和16进制互相转化～

说明：用日文charset  shift-jis（汉字假名占2byte，英文数字占1byte）实现的。

java 代码

import java.io.UnsupportedEncodingException;

public class CharStr {

    private static String hex2Str(String theHex) {
        String theRst = "";
        byte[] theByte = new byte[theHex.length() / 2];

        try {
            for (int i = 0; i < theHex.length(); i += 2) {
                theByte[i / 2 ] = Integer.decode("0X"+
                        theHex.substring(i, i + 2)).byteValue();
            }
            theRst = new String(theByte, 0, theByte.length, "Shift_JIS");
        } catch (Exception Ue) {
            Ue.printStackTrace();
        }
        return theRst;
    }

    private static String str2Hex(String theStr) {
        byte[] bytes;
        String result = "";
        int tmp;
        String tmpStr;
        try {
            bytes = theStr.getBytes("Shift_JIS");
            for (int i = 0; i < bytes.length; i++) {
                if (bytes[i] < 0) {
                    tmp = 256 + bytes[i];
                    tmpStr = Integer.toHexString(tmp).toUpperCase();
                    result += tmpStr;
                } else {
                    tmpStr = Integer.toHexString(bytes[i]).toUpperCase();

                    result += tmpStr.length()==1?"0"+tmpStr:tmpStr;
                }
            }
        } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return result;
    }
    public static void main(String[] argv) throws UnsupportedEncodingException {
        String a = "abcdefあaいbうcえdおe";
        String b = str2Hex(a);
        String c = hex2Str(b);
        System.out.println(a);
        System.out.println(b);
        System.out.println(c);
    }
}