byte2hex

喜欢收集一些工具类,写到博客里,需要时候来看看

import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.ObjectInputStream;import java.io.ObjectOutputStream;import java.io.Serializable;import java.security.MessageDigest;import java.security.NoSuchAlgorithmException;public class HexStringToByte {public final static String[] BToA = new String[] { "0", "1", "2", "3", "4","5", "6", "7", "8", "9" };/** * java二进制,字节数组,字符,十六进制,BCD编码转换2007-06-07 00:17 把16进制字符串转换成字节数组 *  * @param hex * @return */public static byte[] hexStringToByte(String hex) {int len = (hex.length() / 2);byte[] result = new byte[len];char[] achar = hex.toCharArray();for (int i = 0; i < len; i++) {int pos = i * 2;result[i] = (byte) (toByte(achar[pos]) << 4 | toByte(achar[pos + 1]));}return result;}private static byte toByte(char c) {byte b = (byte) "0123456789ABCDEF".indexOf(c);return b;}/** * 把字节数组转换成16进制字符串 *  * @param bArray * @return */public static final String bytesToHexString(byte[] bArray) {StringBuffer sb = new StringBuffer(bArray.length);String sTemp;for (int i = 0; i < bArray.length; i++) {sTemp = Integer.toHexString(0xFF & bArray[i]);if (sTemp.length() < 2)sb.append(0);sb.append(sTemp.toUpperCase());}return sb.toString();}/** *//** * 把字节数组转换为对象 *  * @param bytes * @return * @throws IOException * @throws ClassNotFoundException */public static final Object bytesToObject(byte[] bytes) throws IOException,ClassNotFoundException {ByteArrayInputStream in = new ByteArrayInputStream(bytes);ObjectInputStream oi = new ObjectInputStream(in);Object o = oi.readObject();oi.close();return o;}/** *//** * 把可序列化对象转换成字节数组 *  * @param s * @return * @throws IOException */public static final byte[] objectToBytes(Serializable s) throws IOException {ByteArrayOutputStream out = new ByteArrayOutputStream();ObjectOutputStream ot = new ObjectOutputStream(out);ot.writeObject(s);ot.flush();ot.close();return out.toByteArray();}public static final String objectToHexString(Serializable s)throws IOException {return bytesToHexString(objectToBytes(s));}public static final Object hexStringToObject(String hex)throws IOException, ClassNotFoundException {return bytesToObject(hexStringToByte(hex));}/** *//** * @函数功能: BCD码转为10进制串(阿拉伯数据) * @输入参数: BCD码 * @输出结果: 10进制串 */public static String bcd2Str(byte[] bytes) {StringBuffer temp = new StringBuffer(bytes.length * 2);for (int i = 0; i < bytes.length; i++) {temp.append((byte) ((bytes[i] & 0xf0) >>> 4));temp.append((byte) (bytes[i] & 0x0f));}return temp.toString().substring(0, 1).equalsIgnoreCase("0") ? temp.toString().substring(1) : temp.toString();}/** *//** * @函数功能: 10进制串转为BCD码 * @输入参数: 10进制串 * @输出结果: BCD码 */public static byte[] str2Bcd(String asc) {int len = asc.length();int mod = len % 2;if (mod != 0) {asc = "0" + asc;len = asc.length();}byte abt[] = new byte[len];if (len >= 2) {len = len / 2;}byte bbt[] = new byte[len];abt = asc.getBytes();int j, k;for (int p = 0; p < asc.length() / 2; p++) {if ((abt[2 * p] >= '0') && (abt[2 * p] <= '9')) {j = abt[2 * p] - '0';} else if ((abt[2 * p] >= 'a') && (abt[2 * p] <= 'z')) {j = abt[2 * p] - 'a' + 0x0a;} else {j = abt[2 * p] - 'A' + 0x0a;}if ((abt[2 * p + 1] >= '0') && (abt[2 * p + 1] <= '9')) {k = abt[2 * p + 1] - '0';} else if ((abt[2 * p + 1] >= 'a') && (abt[2 * p + 1] <= 'z')) {k = abt[2 * p + 1] - 'a' + 0x0a;} else {k = abt[2 * p + 1] - 'A' + 0x0a;}int a = (j << 4) + k;byte b = (byte) a;bbt[p] = b;}return bbt;}/** *//** * @函数功能: BCD码转ASC码 * @输入参数: BCD串 * @输出结果: ASC码 */public static String BCD2ASC(byte[] bytes) {StringBuffer temp = new StringBuffer(bytes.length * 2);for (int i = 0; i < bytes.length; i++) {int h = ((bytes[i] & 0xf0) >>> 4);int l = (bytes[i] & 0x0f);temp.append(BToA[h]).append(BToA[l]);}return temp.toString();}/** *//** * MD5加密字符串，返回加密后的16进制字符串 *  * @param origin * @return */public static String MD5EncodeToHex(String origin) {return bytesToHexString(MD5Encode(origin));}/** *//** * MD5加密字符串，返回加密后的字节数组 *  * @param origin * @return */public static byte[] MD5Encode(String origin) {return MD5Encode(origin.getBytes());}/** *//** * MD5加密字节数组，返回加密后的字节数组 *  * @param bytes * @return */public static byte[] MD5Encode(byte[] bytes) {MessageDigest md = null;try {md = MessageDigest.getInstance("MD5");return md.digest(bytes);} catch (NoSuchAlgorithmException e) {e.printStackTrace();}return new byte[0];}/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubString res = BCD2ASC(new byte[] { 0x35, 0x34 });System.out.println(res);String str;//byte[] mybyte = str2Bcd("305678abced0"); //16510E7578348D847A00B258D3F7C643byte[] mybyte = str2Bcd("305678abced1");   //CEF72901036D7E65F849BA4D9D042CC2str=bytesToHexString(mybyte);System.out.println(str);mybyte=MD5Encode(mybyte);str=bytesToHexString(mybyte);System.out.println(str);}}