/*

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* and open the template in the editor.

*/

package test.util;

/**

*

* @author Administrator

*/

public class StringUtil {

    public StringUtil() {

    }

    /**

     * 将指定byte数组以16进制的形式打印到控制台

     * @param hint String

     * @param b byte[]

     * @return void

     */

    public static String printHexString( byte[] b) {

        StringBuffer returnValue = new StringBuffer();

        for (int i = 0; i < b.length; i++) {

            String hex = Integer.toHexString(b[i] & 0xFF);

            if (hex.length() == 1) {

                hex = '0' + hex;

            }

            System.out.print(hex.toUpperCase() + " ");

            returnValue.append(hex.toUpperCase() + " ");

        }

        return "[" + returnValue.toString() + "]";

    }

    /**

     *

     * @param b byte[]

     * @return String

     */

    public static String Bytes2HexString(byte[] b) {

        String ret = "";

        for (int i = 0; i < b.length; i++) {

            String hex = Integer.toHexString(b[i] & 0xFF);

            if (hex.length() == 1) {

                hex = '0' + hex;

            }

            ret += hex.toUpperCase();

        }

        return ret;

    }

    /**

     * 将两个ASCII字符合成一个字节；

     * 如："EF"--> 0xEF

     * @param src0 byte

     * @param src1 byte

     * @return byte

     */

    public static byte uniteBytes(byte src0, byte src1) {

        byte _b0 = Byte.decode("0x" + new String(new byte[]{src0})).byteValue();

        _b0 = (byte) (_b0 << 4);

        byte _b1 = Byte.decode("0x" + new String(new byte[]{src1})).byteValue();

        byte ret = (byte) (_b0 ^ _b1);

        return ret;

    }

    /**

     * 将指定字符串src，以每两个字符分割转换为16进制形式

     * 如："2B44EFD9" --> byte[]{0x2B, 0x44, 0xEF, 0xD9}

     * @param src String

     * @return byte[]

     */

    public static byte[] HexString2Bytes(String src) {

        byte[] ret = new byte[8];

        byte[] tmp = src.getBytes();

        for (int i = 0; i < 8; i++) {

            ret[i] = uniteBytes(tmp[i * 2], tmp[i * 2 + 1]);

        }

        return ret;

    }

}