JAVA二进制字节数组字符十六进制BCD编码转换.doc

JAVA二进制字节数组字符十六进制BCD编码转换;import java.io.*;import java.security.MessageDigest;import java.security.NoSuchAlgorithmException;public class DataConverter /* 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 bytelen; char achar = hex.toCharArray(); for (int i = 0; i len; i+) int pos = i * 2; resulti = (byte) (toByte(acharpos) 4 | toByte(acharpos + 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 & bArrayi); 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;i4); temp.append(byte)(bytesi& 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 bytelen; if (len = 2) len = len / 2; byte bbt = new bytelen; abt = asc.getBytes(); int j, k; for (int p = 0; p = 0) & (abt2 * p = a) & (abt2 * p = 0) & (abt2 * p + 1 = a) & (abt2 * p + 1 = z) k = abt2 * p + 1 - a + 0x0a; else k = abt2 * p + 1 - A + 0x0a; int a = (j 4) + k; byte b = (byte) a; bbtp = 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 4); int l = (bytesi & 0x0f); temp.append(BToAh).append( BToAl); 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(byt