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@@ -0,0 +1,625 @@
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+package com.jd.zfjyjgfwpt.util;
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+
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+import java.math.BigInteger;
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+
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+
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+/**
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+ * byte公用函数类
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+ *
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+ * @author mengbing
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+ */
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+public class ByteUtils {
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+ /**
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+ * 整形转换成网络传输的字节流(字节数组)型数据
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+ *
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+ * @param num 一个整型数据
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+ * @return 4个字节的自己数组
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+ */
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+ public static byte[] intToBytes(int num) {
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+ byte[] bytes = new byte[4];
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+ bytes[0] = (byte) (0xff & (num >> 0));
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+ bytes[1] = (byte) (0xff & (num >> 8));
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+ bytes[2] = (byte) (0xff & (num >> 16));
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+ bytes[3] = (byte) (0xff & (num >> 24));
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+ return bytes;
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+ }
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+
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+ /**
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+ * 四个字节的字节数据转换成一个整形数据
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+ *
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+ * @param bytes 4个字节的字节数组
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+ * @return 一个整型数据
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+ */
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+ public static int byteToInt(byte[] bytes) {
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+ int num = 0;
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+ int temp;
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+ temp = (0x000000ff & (bytes[0])) << 0;
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+ num = num | temp;
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+ temp = (0x000000ff & (bytes[1])) << 8;
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+ num = num | temp;
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+ temp = (0x000000ff & (bytes[2])) << 16;
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+ num = num | temp;
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+ temp = (0x000000ff & (bytes[3])) << 24;
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+ num = num | temp;
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+ return num;
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+ }
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+
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+ /**
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+ * 长整形转换成网络传输的字节流(字节数组)型数据
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+ *
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+ * @param num 一个长整型数据
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+ * @return 4个字节的自己数组
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+ */
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+ public static byte[] longToBytes(long num) {
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+ byte[] bytes = new byte[8];
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+ for (int i = 0; i < 8; i++) {
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+ bytes[i] = (byte) (0xff & (num >> (i * 8)));
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+ }
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+
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+ return bytes;
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+ }
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+
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+ /**
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+ * 大数字转换字节流(字节数组)型数据
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+ *
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+ * @param n
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+ * @return
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+ */
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+ public static byte[] byteConvert32Bytes(BigInteger n) {
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+ byte tmpd[] = (byte[]) null;
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+ if (n == null) {
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+ return null;
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+ }
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+
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+ if (n.toByteArray().length == 33) {
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+ tmpd = new byte[32];
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+ System.arraycopy(n.toByteArray(), 1, tmpd, 0, 32);
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+ } else if (n.toByteArray().length == 32) {
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+ tmpd = n.toByteArray();
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+ } else {
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+ tmpd = new byte[32];
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+ for (int i = 0; i < 32 - n.toByteArray().length; i++) {
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+ tmpd[i] = 0;
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+ }
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+ System.arraycopy(n.toByteArray(), 0, tmpd,
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+ 32 - n.toByteArray().length, n.toByteArray().length);
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+ }
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+ return tmpd;
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+ }
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+
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+ /**
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+ * 换字节流(字节数组)型数据转大数字
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+ *
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+ * @param b
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+ * @return
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+ */
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+ public static BigInteger byteConvertInteger(byte[] b) {
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+ if (b[0] < 0) {
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+ byte[] temp = new byte[b.length + 1];
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+ temp[0] = 0;
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+ System.arraycopy(b, 0, temp, 1, b.length);
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+ return new BigInteger(temp);
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+ }
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+ return new BigInteger(b);
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+ }
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+
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+ /**
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+ * 根据字节数组获得值(十六进制数字)
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+ *
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+ * @param bytes
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+ * @return
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+ */
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+ public static String getHexString(byte[] bytes) {
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+ return getHexString(bytes, true);
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+ }
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+
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+ /**
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+ * 根据字节数组获得值(十六进制数字)
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+ *
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+ * @param bytes
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+ * @param upperCase
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+ * @return
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+ */
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+ public static String getHexString(byte[] bytes, boolean upperCase) {
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+ String ret = "";
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+ for (int i = 0; i < bytes.length; i++) {
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+ ret += Integer.toString((bytes[i] & 0xff) + 0x100, 16).substring(1);
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+ }
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+ return upperCase ? ret.toUpperCase() : ret;
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+ }
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+
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+ /**
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+ * 打印十六进制字符串
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+ *
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+ * @param bytes
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+ */
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+ public static void printHexString(byte[] bytes) {
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+ for (int i = 0; i < bytes.length; i++) {
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+ String hex = Integer.toHexString(bytes[i] & 0xFF);
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+ if (hex.length() == 1) {
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+ hex = '0' + hex;
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+ }
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+ System.out.print("0x" + hex.toUpperCase() + ",");
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+ }
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+ System.out.println("");
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+ }
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+
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+ /**
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+ * Convert hex string to byte[]
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+ *
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+ * @param hexString the hex string
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+ * @return byte[]
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+ */
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+ public static byte[] hexStringToBytes(String hexString) {
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+ if (hexString == null || hexString.equals("")) {
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+ return null;
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+ }
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+
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+ hexString = hexString.toUpperCase();
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+ int length = hexString.length() / 2;
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+ char[] hexChars = hexString.toCharArray();
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+ byte[] d = new byte[length];
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+ for (int i = 0; i < length; i++) {
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+ int pos = i * 2;
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+ d[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));
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+ }
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+ return d;
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+ }
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+
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+ /**
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+ * Convert char to byte
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+ *
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+ * @param c char
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+ * @return byte
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+ */
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+ public static byte charToByte(char c) {
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+ return (byte) "0123456789ABCDEF".indexOf(c);
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+ }
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+
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+ /**
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+ * 用于建立十六进制字符的输出的小写字符数组
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+ */
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+ private static final char[] DIGITS_LOWER = {'0', '1', '2', '3', '4', '5',
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+ '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
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+
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+ /**
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+ * 用于建立十六进制字符的输出的大写字符数组
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+ */
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+ private static final char[] DIGITS_UPPER = {'0', '1', '2', '3', '4', '5',
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+ '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
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+
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+ /**
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+ * 将字节数组转换为十六进制字符数组
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+ *
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+ * @param data byte[]
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+ * @return 十六进制char[]
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+ */
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+ public static char[] encodeHex(byte[] data) {
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+ return encodeHex(data, true);
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+ }
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+
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+ /**
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+ * 将字节数组转换为十六进制字符数组
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+ *
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+ * @param data byte[]
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+ * @param toLowerCase <code>true</code> 传换成小写格式 , <code>false</code> 传换成大写格式
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+ * @return 十六进制char[]
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+ */
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+ public static char[] encodeHex(byte[] data, boolean toLowerCase) {
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+ return encodeHex(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER);
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+ }
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+
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+ /**
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+ * 将字节数组转换为十六进制字符数组
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+ *
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+ * @param data byte[]
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+ * @param toDigits 用于控制输出的char[]
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+ * @return 十六进制char[]
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+ */
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+ protected static char[] encodeHex(byte[] data, char[] toDigits) {
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+ int l = data.length;
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+ char[] out = new char[l << 1];
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+ // two characters form the hex value.
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+ for (int i = 0, j = 0; i < l; i++) {
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+ out[j++] = toDigits[(0xF0 & data[i]) >>> 4];
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+ out[j++] = toDigits[0x0F & data[i]];
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+ }
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+ return out;
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+ }
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+
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+ /**
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+ * 将字节数组转换为十六进制字符串
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+ *
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+ * @param data byte[]
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+ * @return 十六进制String
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+ */
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+ public static String encodeHexString(byte[] data) {
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+ return encodeHexString(data, true);
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+ }
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+
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+ /**
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+ * 将字节数组转换为十六进制字符串
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+ *
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+ * @param data byte[]
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+ * @param toLowerCase <code>true</code> 传换成小写格式 , <code>false</code> 传换成大写格式
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+ * @return 十六进制String
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+ */
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+ public static String encodeHexString(byte[] data, boolean toLowerCase) {
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+ return encodeHexString(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER);
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+ }
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+
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+ /**
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+ * 将字节数组转换为十六进制字符串
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+ *
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+ * @param data byte[]
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+ * @param toDigits 用于控制输出的char[]
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+ * @return 十六进制String
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+ */
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+ protected static String encodeHexString(byte[] data, char[] toDigits) {
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+ return new String(encodeHex(data, toDigits));
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+ }
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+
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+ /**
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+ * 将十六进制字符数组转换为字节数组
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+ *
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+ * @param data 十六进制char[]
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+ * @return byte[]
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+ * @throws RuntimeException 如果源十六进制字符数组是一个奇怪的长度,将抛出运行时异常
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+ */
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+ public static byte[] decodeHex(char[] data) {
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+ int len = data.length;
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+
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+ if ((len & 0x01) != 0) {
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+ throw new RuntimeException("Odd number of characters.");
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+ }
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+
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+ byte[] out = new byte[len >> 1];
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+
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+ // two characters form the hex value.
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+ for (int i = 0, j = 0; j < len; i++) {
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+ int f = toDigit(data[j], j) << 4;
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+ j++;
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+ f = f | toDigit(data[j], j);
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+ j++;
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+ out[i] = (byte) (f & 0xFF);
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+ }
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+
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+ return out;
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+ }
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+
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+ /**
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+ * 将十六进制字符转换成一个整数
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+ *
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+ * @param ch 十六进制char
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+ * @param index 十六进制字符在字符数组中的位置
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+ * @return 一个整数
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+ * @throws RuntimeException 当ch不是一个合法的十六进制字符时,抛出运行时异常
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+ */
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+ protected static int toDigit(char ch, int index) {
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+ int digit = Character.digit(ch, 16);
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+ if (digit == -1) {
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+ throw new RuntimeException("Illegal hexadecimal character " + ch
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+ + " at index " + index);
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+ }
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+ return digit;
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+ }
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+
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+ /**
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+ * 数字字符串转ASCII码字符串
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+ *
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+ * @param content 字符串
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+ * @return ASCII字符串
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+ */
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+ public static String StringToAsciiString(String content) {
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+ String result = "";
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+ int max = content.length();
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+ for (int i = 0; i < max; i++) {
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+ char c = content.charAt(i);
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+ String b = Integer.toHexString(c);
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+ result = result + b;
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+ }
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+ return result;
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+ }
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+
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+ /**
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+ * 十六进制转字符串
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+ *
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+ * @param hexString 十六进制字符串
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+ * @param encodeType 编码类型4:Unicode,2:普通编码
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+ * @return 字符串
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+ */
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+ public static String hexStringToString(String hexString, int encodeType) {
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+ String result = "";
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+ int max = hexString.length() / encodeType;
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+ for (int i = 0; i < max; i++) {
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+ char c = (char) hexStringToAlgorism(hexString
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+ .substring(i * encodeType, (i + 1) * encodeType));
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+ result += c;
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+ }
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+ return result;
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+ }
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+
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+ /**
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+ * 十六进制字符串装十进制
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+ *
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+ * @param hex 十六进制字符串
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+ * @return 十进制数值
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+ */
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+ public static int hexStringToAlgorism(String hex) {
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+ hex = hex.toUpperCase();
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+ int max = hex.length();
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+ int result = 0;
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+ for (int i = max; i > 0; i--) {
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+ char c = hex.charAt(i - 1);
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+ int algorism = 0;
|
|
|
|
+ if (c >= '0' && c <= '9') {
|
|
|
|
+ algorism = c - '0';
|
|
|
|
+ } else {
|
|
|
|
+ algorism = c - 55;
|
|
|
|
+ }
|
|
|
|
+ result += Math.pow(16, max - i) * algorism;
|
|
|
|
+ }
|
|
|
|
+ return result;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * 十六转二进制
|
|
|
|
+ *
|
|
|
|
+ * @param hex 十六进制字符串
|
|
|
|
+ * @return 二进制字符串
|
|
|
|
+ */
|
|
|
|
+ public static String hexStringToBinary(String hex) {
|
|
|
|
+ hex = hex.toUpperCase();
|
|
|
|
+ String result = "";
|
|
|
|
+ int max = hex.length();
|
|
|
|
+ for (int i = 0; i < max; i++) {
|
|
|
|
+ char c = hex.charAt(i);
|
|
|
|
+ switch (c) {
|
|
|
|
+ case '0':
|
|
|
|
+ result += "0000";
|
|
|
|
+ break;
|
|
|
|
+ case '1':
|
|
|
|
+ result += "0001";
|
|
|
|
+ break;
|
|
|
|
+ case '2':
|
|
|
|
+ result += "0010";
|
|
|
|
+ break;
|
|
|
|
+ case '3':
|
|
|
|
+ result += "0011";
|
|
|
|
+ break;
|
|
|
|
+ case '4':
|
|
|
|
+ result += "0100";
|
|
|
|
+ break;
|
|
|
|
+ case '5':
|
|
|
|
+ result += "0101";
|
|
|
|
+ break;
|
|
|
|
+ case '6':
|
|
|
|
+ result += "0110";
|
|
|
|
+ break;
|
|
|
|
+ case '7':
|
|
|
|
+ result += "0111";
|
|
|
|
+ break;
|
|
|
|
+ case '8':
|
|
|
|
+ result += "1000";
|
|
|
|
+ break;
|
|
|
|
+ case '9':
|
|
|
|
+ result += "1001";
|
|
|
|
+ break;
|
|
|
|
+ case 'A':
|
|
|
|
+ result += "1010";
|
|
|
|
+ break;
|
|
|
|
+ case 'B':
|
|
|
|
+ result += "1011";
|
|
|
|
+ break;
|
|
|
|
+ case 'C':
|
|
|
|
+ result += "1100";
|
|
|
|
+ break;
|
|
|
|
+ case 'D':
|
|
|
|
+ result += "1101";
|
|
|
|
+ break;
|
|
|
|
+ case 'E':
|
|
|
|
+ result += "1110";
|
|
|
|
+ break;
|
|
|
|
+ case 'F':
|
|
|
|
+ result += "1111";
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+ return result;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * ASCII码字符串转数字字符串
|
|
|
|
+ *
|
|
|
|
+ * @param content ASCII字符串
|
|
|
|
+ * @return 字符串
|
|
|
|
+ */
|
|
|
|
+ public static String AsciiStringToString(String content) {
|
|
|
|
+ String result = "";
|
|
|
|
+ int length = content.length() / 2;
|
|
|
|
+ for (int i = 0; i < length; i++) {
|
|
|
|
+ String c = content.substring(i * 2, i * 2 + 2);
|
|
|
|
+ int a = hexStringToAlgorism(c);
|
|
|
|
+ char b = (char) a;
|
|
|
|
+ String d = String.valueOf(b);
|
|
|
|
+ result += d;
|
|
|
|
+ }
|
|
|
|
+ return result;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * 将十进制转换为指定长度的十六进制字符串
|
|
|
|
+ *
|
|
|
|
+ * @param algorism int 十进制数字
|
|
|
|
+ * @param maxLength int 转换后的十六进制字符串长度
|
|
|
|
+ * @return String 转换后的十六进制字符串
|
|
|
|
+ */
|
|
|
|
+ public static String algorismToHexString(int algorism, int maxLength) {
|
|
|
|
+ String result = "";
|
|
|
|
+ result = Integer.toHexString(algorism);
|
|
|
|
+
|
|
|
|
+ if (result.length() % 2 == 1) {
|
|
|
|
+ result = "0" + result;
|
|
|
|
+ }
|
|
|
|
+ return patchHexString(result.toUpperCase(), maxLength);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * 字节数组转为普通字符串(ASCII对应的字符)
|
|
|
|
+ *
|
|
|
|
+ * @param bytearray byte[]
|
|
|
|
+ * @return String
|
|
|
|
+ */
|
|
|
|
+ public static String byteToString(byte[] bytearray) {
|
|
|
|
+ String result = "";
|
|
|
|
+ char temp;
|
|
|
|
+
|
|
|
|
+ int length = bytearray.length;
|
|
|
|
+ for (int i = 0; i < length; i++) {
|
|
|
|
+ temp = (char) bytearray[i];
|
|
|
|
+ result += temp;
|
|
|
|
+ }
|
|
|
|
+ return result;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * 二进制字符串转十进制
|
|
|
|
+ *
|
|
|
|
+ * @param binary 二进制字符串
|
|
|
|
+ * @return 十进制数值
|
|
|
|
+ */
|
|
|
|
+ public static int binaryToAlgorism(String binary) {
|
|
|
|
+ int max = binary.length();
|
|
|
|
+ int result = 0;
|
|
|
|
+ for (int i = max; i > 0; i--) {
|
|
|
|
+ char c = binary.charAt(i - 1);
|
|
|
|
+ int algorism = c - '0';
|
|
|
|
+ result += Math.pow(2, max - i) * algorism;
|
|
|
|
+ }
|
|
|
|
+ return result;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * 十进制转换为十六进制字符串
|
|
|
|
+ *
|
|
|
|
+ * @param algorism int 十进制的数字
|
|
|
|
+ * @return String 对应的十六进制字符串
|
|
|
|
+ */
|
|
|
|
+ public static String algorismToHEXString(int algorism) {
|
|
|
|
+ String result = "";
|
|
|
|
+ result = Integer.toHexString(algorism);
|
|
|
|
+
|
|
|
|
+ if (result.length() % 2 == 1) {
|
|
|
|
+ result = "0" + result;
|
|
|
|
+
|
|
|
|
+ }
|
|
|
|
+ result = result.toUpperCase();
|
|
|
|
+
|
|
|
|
+ return result;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * HEX字符串前补0,主要用于长度位数不足。
|
|
|
|
+ *
|
|
|
|
+ * @param str String 需要补充长度的十六进制字符串
|
|
|
|
+ * @param maxLength int 补充后十六进制字符串的长度
|
|
|
|
+ * @return 补充结果
|
|
|
|
+ */
|
|
|
|
+ static public String patchHexString(String str, int maxLength) {
|
|
|
|
+ String temp = "";
|
|
|
|
+ for (int i = 0; i < maxLength - str.length(); i++) {
|
|
|
|
+ temp = "0" + temp;
|
|
|
|
+ }
|
|
|
|
+ str = (temp + str).substring(0, maxLength);
|
|
|
|
+ return str;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * 将一个字符串转换为int
|
|
|
|
+ *
|
|
|
|
+ * @param s String 要转换的字符串
|
|
|
|
+ * @param defaultInt int 如果出现异常,默认返回的数字
|
|
|
|
+ * @param radix int 要转换的字符串是什么进制的,如16 8 10.
|
|
|
|
+ * @return int 转换后的数字
|
|
|
|
+ */
|
|
|
|
+ public static int parseToInt(String s, int defaultInt, int radix) {
|
|
|
|
+ int i = 0;
|
|
|
|
+ try {
|
|
|
|
+ i = Integer.parseInt(s, radix);
|
|
|
|
+ } catch (NumberFormatException ex) {
|
|
|
|
+ i = defaultInt;
|
|
|
|
+ }
|
|
|
|
+ return i;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * 将一个十进制形式的数字字符串转换为int
|
|
|
|
+ *
|
|
|
|
+ * @param s String 要转换的字符串
|
|
|
|
+ * @param defaultInt int 如果出现异常,默认返回的数字
|
|
|
|
+ * @return int 转换后的数字
|
|
|
|
+ */
|
|
|
|
+ public static int parseToInt(String s, int defaultInt) {
|
|
|
|
+ int i = 0;
|
|
|
|
+ try {
|
|
|
|
+ i = Integer.parseInt(s);
|
|
|
|
+ } catch (NumberFormatException ex) {
|
|
|
|
+ i = defaultInt;
|
|
|
|
+ }
|
|
|
|
+ return i;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * 十六进制串转化为byte数组
|
|
|
|
+ *
|
|
|
|
+ * @return the array of byte
|
|
|
|
+ */
|
|
|
|
+ public static byte[] hexToByte(String hex)
|
|
|
|
+ throws IllegalArgumentException {
|
|
|
|
+ if (hex.length() % 2 != 0) {
|
|
|
|
+ throw new IllegalArgumentException();
|
|
|
|
+ }
|
|
|
|
+ char[] arr = hex.toCharArray();
|
|
|
|
+ byte[] b = new byte[hex.length() / 2];
|
|
|
|
+ for (int i = 0, j = 0, l = hex.length(); i < l; i++, j++) {
|
|
|
|
+ String swap = "" + arr[i++] + arr[i];
|
|
|
|
+ int byteint = Integer.parseInt(swap, 16) & 0xFF;
|
|
|
|
+ b[j] = new Integer(byteint).byteValue();
|
|
|
|
+ }
|
|
|
|
+ return b;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ /**
|
|
|
|
+ * 字节数组转换为十六进制字符串
|
|
|
|
+ *
|
|
|
|
+ * @param b byte[] 需要转换的字节数组
|
|
|
|
+ * @return String 十六进制字符串
|
|
|
|
+ */
|
|
|
|
+ public static String byteToHex(byte b[]) {
|
|
|
|
+ if (b == null) {
|
|
|
|
+ throw new IllegalArgumentException(
|
|
|
|
+ "Argument b ( byte array ) is null! ");
|
|
|
|
+ }
|
|
|
|
+ String hs = "";
|
|
|
|
+ String stmp = "";
|
|
|
|
+ for (int n = 0; n < b.length; n++) {
|
|
|
|
+ stmp = Integer.toHexString(b[n] & 0xff);
|
|
|
|
+ if (stmp.length() == 1) {
|
|
|
|
+ hs = hs + "0" + stmp;
|
|
|
|
+ } else {
|
|
|
|
+ hs = hs + stmp;
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+ return hs.toUpperCase();
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ public static byte[] subByte(byte[] input, int startIndex, int length) {
|
|
|
|
+ byte[] bt = new byte[length];
|
|
|
|
+ for (int i = 0; i < length; i++) {
|
|
|
|
+ bt[i] = input[i + startIndex];
|
|
|
|
+ }
|
|
|
|
+ return bt;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+
|
|
|
|
+}
|