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@@ -0,0 +1,854 @@
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+package com.shkpr.service.proxycenter.commtools;
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+import java.nio.ByteBuffer;
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+import java.nio.CharBuffer;
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+import java.nio.charset.Charset;
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+import java.util.List;
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+/**
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+ * Created by Ti on 2018/8/7.
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+ */
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+
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+/**
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+ * 字节数组转换工具类
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+ */
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+public class BytesUtils {
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+ public static final String GBK = "GBK";
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+ public static final String UTF8 = "utf-8";
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+ public static final char[] ascii = "0123456789ABCDEF".toCharArray();
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+ private static final char[] HEX_VOCABLE = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
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+
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+ /**
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+ * 将short整型数值转换为字节数组
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+ *
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+ * @param data
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+ * @return
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+ */
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+ public static byte[] getBytes(short data) {
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+ byte[] bytes = new byte[2];
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+ bytes[0] = (byte) ((data & 0xff00) >> 8);
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+ bytes[1] = (byte) (data & 0xff);
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+ return bytes;
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+ }
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+
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+ /**
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+ * 将字符转换为字节数组
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+ * @param data
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+ * @return
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+ */
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+ public static byte[] getBytes(char data) {
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+ byte[] bytes = new byte[2];
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+ bytes[0] = (byte) (data >> 8);
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+ bytes[1] = (byte) (data);
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+ return bytes;
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+ }
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+
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+ /**
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+ * 将布尔值转换为字节数组
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+ * @param data
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+ * @return
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+ */
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+ public static byte[] getBytes(boolean data) {
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+ byte[] bytes = new byte[1];
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+ bytes[0] = (byte) (data ? 1 : 0);
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+ return bytes;
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+ }
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+
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+ /**
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+ * 将整型数值转换为字节数组
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+ * @param data
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+ * @return
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+ */
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+ public static byte[] getBytes(int data) {
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+ byte[] bytes = new byte[4];
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+ bytes[0] = (byte) ((data & 0xff000000) >> 24);
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+ bytes[1] = (byte) ((data & 0xff0000) >> 16);
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+ bytes[2] = (byte) ((data & 0xff00) >> 8);
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+ bytes[3] = (byte) (data & 0xff);
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+ return bytes;
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+ }
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+
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+ /**
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+ * 将long整型数值转换为字节数组
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+ * @param data
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+ * @return
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+ */
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+ public static byte[] getBytes(long data) {
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+ byte[] bytes = new byte[8];
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+ bytes[0] = (byte) ((data >> 56) & 0xff);
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+ bytes[1] = (byte) ((data >> 48) & 0xff);
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+ bytes[2] = (byte) ((data >> 40) & 0xff);
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+ bytes[3] = (byte) ((data >> 32) & 0xff);
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+ bytes[4] = (byte) ((data >> 24) & 0xff);
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+ bytes[5] = (byte) ((data >> 16) & 0xff);
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+ bytes[6] = (byte) ((data >> 8) & 0xff);
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+ bytes[7] = (byte) (data & 0xff);
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+ return bytes;
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+ }
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+
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+ /**
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+ * 将float型数值转换为字节数组
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+ * @param data
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+ * @return
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+ */
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+ public static byte[] getBytes(float data) {
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+ int intBits = Float.floatToIntBits(data);
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+ return getBytes(intBits);
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+ }
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+
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+ /**
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+ * 将double型数值转换为字节数组
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+ * @param data
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+ * @return
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+ */
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+ public static byte[] getBytes(double data) {
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+ long intBits = Double.doubleToLongBits(data);
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+ return getBytes(intBits);
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+ }
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+
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+ /**
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+ * 将字符串按照charsetName编码格式的字节数组
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+ * @param data 字符串
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+ * @param charsetName 编码格式
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+ * @return
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+ */
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+ public static byte[] getBytes(String data, String charsetName) {
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+ Charset charset = Charset.forName(charsetName);
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+ return data.getBytes(charset);
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+ }
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+
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+ /**
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+ * 将字节数组第0字节转换为布尔值
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+ * @param bytes
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+ * @return
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+ */
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+ public static boolean getBoolean(byte[] bytes) {
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+ return bytes[0] == 1;
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+ }
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+
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+ /**
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+ * 将字节数组的第index字节转换为布尔值
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+ * @param bytes
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+ * @param index
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+ * @return
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+ */
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+ public static boolean getBoolean(byte[] bytes, int index) {
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+ return bytes[index] == 1;
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+ }
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+
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+ /**
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+ * 将字节数组前2字节转换为short整型数值
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+ * @param bytes
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+ * @return
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+ */
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+ public static short getShort(byte[] bytes) {
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+ return (short) ((0xff00 & (bytes[0] << 8)) | (0xff & bytes[1]));
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+ }
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+
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+ /**
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+ * 将字节数组从startIndex开始的2个字节转换为short整型数值
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+ * @param bytes
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+ * @param startIndex
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+ * @return
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+ */
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+ public static short getShort(byte[] bytes, int startIndex) {
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+ return (short) ((0xff00 & (bytes[startIndex] << 8)) | (0xff & bytes[startIndex + 1]));
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+ }
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+
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+ /**
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+ * 将字节数组前2字节转换为字符
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+ * @param bytes
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+ * @return
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+ */
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+ public static char getChar(byte[] bytes) {
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+ return (char) ((0xff00 & (bytes[0] << 8)) | (0xff & bytes[1]));
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+ }
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+
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+ /**
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+ * 将字节数组从startIndex开始的2个字节转换为字符
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+ * @param bytes
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+ * @param startIndex
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+ * @return
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+ */
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+ public static char getChar(byte[] bytes, int startIndex) {
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+ return (char) ((0xff00 & (bytes[startIndex] << 8)) | (0xff & bytes[startIndex + 1]));
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+ }
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+
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+ /**
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+ * 将字节数组前4字节转换为整型数值
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+ * @param bytes
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+ * @return
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+ */
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+ public static int getInt(byte[] bytes) {
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+ return (0xff000000 & (bytes[0] << 24) | (0xff0000 & (bytes[1] << 16))
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+ | (0xff00 & (bytes[2] << 8)) | (0xff & bytes[3]));
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+ }
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+
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+ /**
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+ * 将字节数组从startIndex开始的4个字节转换为整型数值
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+ * @param bytes
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+ * @param startIndex
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+ * @return
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+ */
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+ public static int getInt(byte[] bytes, int startIndex) {
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+ return (0xff000000 & (bytes[startIndex] << 24)
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+ | (0xff0000 & (bytes[startIndex + 1] << 16))
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+ | (0xff00 & (bytes[startIndex + 2] << 8)) | (0xff & bytes[startIndex + 3]));
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+ }
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+
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+ /**
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+ * 将字节数组前8字节转换为long整型数值
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+ * @param bytes
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+ * @return
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+ */
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+ public static long getLong(byte[] bytes) {
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+ return (0xff00000000000000L & ((long) bytes[0] << 56)
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+ | (0xff000000000000L & ((long) bytes[1] << 48))
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+ | (0xff0000000000L & ((long) bytes[2] << 40))
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+ | (0xff00000000L & ((long) bytes[3] << 32))
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+ | (0xff000000L & ((long) bytes[4] << 24))
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+ | (0xff0000L & ((long) bytes[5] << 16))
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+ | (0xff00L & ((long) bytes[6] << 8)) | (0xffL & (long) bytes[7]));
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+ }
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+
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+ /**
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+ * 将字节数组从startIndex开始的8个字节转换为long整型数值
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+ * @param bytes
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+ * @param startIndex
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+ * @return
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+ */
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+ public static long getLong(byte[] bytes, int startIndex) {
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+ return (0xff00000000000000L & ((long) bytes[startIndex] << 56)
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+ | (0xff000000000000L & ((long) bytes[startIndex + 1] << 48))
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+ | (0xff0000000000L & ((long) bytes[startIndex + 2] << 40))
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+ | (0xff00000000L & ((long) bytes[startIndex + 3] << 32))
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+ | (0xff000000L & ((long) bytes[startIndex + 4] << 24))
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+ | (0xff0000L & ((long) bytes[startIndex + 5] << 16))
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+ | (0xff00L & ((long) bytes[startIndex + 6] << 8)) | (0xffL & (long) bytes[startIndex + 7]));
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+ }
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+
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+ /**
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+ * 将字节数组前4字节转换为float型数值
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+ * @param bytes
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+ * @return
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+ */
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+ public static float getFloat(byte[] bytes) {
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+ return Float.intBitsToFloat(getInt(bytes));
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+ }
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+
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+ /**
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+ * 将字节数组从startIndex开始的4个字节转换为float型数值
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+ * @param bytes
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+ * @param startIndex
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+ * @return
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+ */
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+ public static float getFloat(byte[] bytes, int startIndex) {
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+ byte[] result = new byte[4];
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+ System.arraycopy(bytes, startIndex, result, 0, 4);
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+ return Float.intBitsToFloat(getInt(result));
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+ }
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+
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+ /**
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+ * 将字节数组前8字节转换为double型数值
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+ * @param bytes
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+ * @return
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+ */
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+ public static double getDouble(byte[] bytes) {
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+ long l = getLong(bytes);
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+ return Double.longBitsToDouble(l);
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+ }
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+
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+ /**
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+ * 将字节数组从startIndex开始的8个字节转换为double型数值
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+ * @param bytes
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+ * @param startIndex
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+ * @return
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+ */
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+ public static double getDouble(byte[] bytes, int startIndex) {
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+ byte[] result = new byte[8];
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+ System.arraycopy(bytes, startIndex, result, 0, 8);
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+ long l = getLong(result);
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+ return Double.longBitsToDouble(l);
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+ }
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+
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+ /**
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+ * 将charsetName编码格式的字节数组转换为字符串
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+ * @param bytes
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+ * @param charsetName
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+ * @return
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+ */
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+ public static String getString(byte[] bytes, String charsetName) {
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+ return new String(bytes, Charset.forName(charsetName));
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+ }
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+
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+ /**
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+ * 将GBK编码格式的字节数组转换为字符串
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+ * @param bytes
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+ * @return
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+ */
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+ public static String getString(byte[] bytes) {
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+ return getString(bytes, GBK);
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+ }
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+
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+ /**
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+ * 将字节数组转换为16进制字符串
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+ * @param src
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+ * @return
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+ */
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+ public static String bytesToHexString(byte[] src){
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+ StringBuilder stringBuilder = new StringBuilder("");
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+ if (src == null || src.length <= 0) {
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+ return null;
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+ }
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+ for (int i = 0; i < src.length; i++) {
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+ int v = src[i] & 0xFF;
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+ String hv = Integer.toHexString(v);
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+ if (hv.length() < 2) {
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+ stringBuilder.append(0);
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+ }
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+ stringBuilder.append(hv);
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+ }
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+ return stringBuilder.toString().toUpperCase();
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+ }
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+
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+ /**
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+ * 将16进制字符串转换为字节数组
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+ * @param hexString
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+ * @return
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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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+ 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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+ * 将16进制字符转换为字节
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+ * @param c
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+ * @return
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+ */
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+ private 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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+ * 将16进制字符串转换为字节数组
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+ *
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+ * @param hex
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+ * @return
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+ */
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+ /*public static byte[] hexToBytes(String hex) {
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+ if (hex.length() % 2 != 0)
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+ throw new IllegalArgumentException(
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+ "input string should be any multiple of 2!");
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+ hex.toUpperCase();
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+
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+ byte[] byteBuffer = new byte[hex.length() / 2];
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+
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+ byte padding = 0x00;
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+ boolean paddingTurning = false;
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+ for (int i = 0; i < hex.length(); i++) {
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+ if (paddingTurning) {
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+ char c = hex.charAt(i);
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+ int index = indexOf(hex, c);
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+ padding = (byte) ((padding << 4) | index);
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+ byteBuffer[i / 2] = padding;
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+ padding = 0x00;
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+ paddingTurning = false;
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+ } else {
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+ char c = hex.charAt(i);
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+ int index = indexOf(hex, c);
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+ padding = (byte) (padding | index);
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+ paddingTurning = true;
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+ }
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+
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+ }
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+ return byteBuffer;
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+ }
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+
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+ private static int indexOf(String input, char c) {
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+ int index = ArrayUtils.indexOf(HEX_VOCABLE, c);
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+
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+ if (index < 0) {
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+ throw new IllegalArgumentException("err input:" + input);
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+ }
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+ return index;
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+
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+ }*/
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+
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+ /**
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+ * 将BCD编码的字节数组转换为字符串
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+ * @param bcds
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+ * @return
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+ */
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+ public static String bcdToString(byte[] bcds) {
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+ if (bcds == null || bcds.length == 0) {
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+ return null;
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+ }
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+ byte[] temp = new byte[2 * bcds.length];
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+ for (int i = 0; i < bcds.length; i++) {
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+ temp[i * 2] = (byte) ((bcds[i] >> 4) & 0x0f);
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+ temp[i * 2 + 1] = (byte) (bcds[i] & 0x0f);
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+ }
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+ StringBuffer res = new StringBuffer();
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+ for (int i = 0; i < temp.length; i++) {
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+ res.append(ascii[temp[i]]);
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+ }
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+ return res.toString();
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+ }
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+
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+ /**
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+ * 字节转整形
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+ * @param value
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static int bcdToInt(byte value){
|
|
|
+ return ((value>>4) * 10) + (value&0x0F);
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 字节数组转16进制字符串
|
|
|
+ * @param bs
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static String bytesToHex(byte[] bs) {
|
|
|
+ StringBuilder sb = new StringBuilder();
|
|
|
+ for (byte b : bs) {
|
|
|
+ int high = (b >> 4) & 0x0f;
|
|
|
+ int low = b & 0x0f;
|
|
|
+ sb.append(HEX_VOCABLE[high]);
|
|
|
+ sb.append(HEX_VOCABLE[low]);
|
|
|
+ }
|
|
|
+ return sb.toString();
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 字节数组取前len个字节转16进制字符串
|
|
|
+ * @param bs
|
|
|
+ * @param len
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static String bytesToHex(byte[] bs, int len) {
|
|
|
+ StringBuilder sb = new StringBuilder();
|
|
|
+ for (int i=0; i<len; i++ ) {
|
|
|
+ byte b = bs[i];
|
|
|
+ int high = (b >> 4) & 0x0f;
|
|
|
+ int low = b & 0x0f;
|
|
|
+ sb.append(HEX_VOCABLE[high]);
|
|
|
+ sb.append(HEX_VOCABLE[low]);
|
|
|
+ }
|
|
|
+ return sb.toString();
|
|
|
+ }
|
|
|
+ /**
|
|
|
+ * 字节数组偏移offset长度之后的取len个字节转16进制字符串
|
|
|
+ * @param bs
|
|
|
+ * @param offset
|
|
|
+ * @param len
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static String bytesToHex(byte[] bs, int offset, int len) {
|
|
|
+ StringBuilder sb = new StringBuilder();
|
|
|
+ for (int i=0; i<len; i++ ) {
|
|
|
+ byte b = bs[offset + i];
|
|
|
+ int high = (b >> 4) & 0x0f;
|
|
|
+ int low = b & 0x0f;
|
|
|
+ sb.append(HEX_VOCABLE[high]);
|
|
|
+ sb.append(HEX_VOCABLE[low]);
|
|
|
+ }
|
|
|
+ return sb.toString();
|
|
|
+ }
|
|
|
+ /**
|
|
|
+ * 字节转16进制字符串
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static String byteToHex(byte b) {
|
|
|
+ StringBuilder sb = new StringBuilder();
|
|
|
+ int high = (b >> 4) & 0x0f;
|
|
|
+ int low = b & 0x0f;
|
|
|
+ sb.append(HEX_VOCABLE[high]);
|
|
|
+ sb.append(HEX_VOCABLE[low]);
|
|
|
+ return sb.toString();
|
|
|
+ }
|
|
|
+ /**
|
|
|
+ * 将字节数组取反
|
|
|
+ * @param src
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static String negate(byte[] src) {
|
|
|
+ if (src == null || src.length == 0) {
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+ byte[] temp = new byte[2 * src.length];
|
|
|
+ for (int i = 0; i < src.length; i++) {
|
|
|
+ byte tmp = (byte) (0xFF ^ src[i]);
|
|
|
+ temp[i * 2] = (byte) ((tmp >> 4) & 0x0f);
|
|
|
+ temp[i * 2 + 1] = (byte) (tmp & 0x0f);
|
|
|
+ }
|
|
|
+ StringBuffer res = new StringBuffer();
|
|
|
+ for (int i = 0; i < temp.length; i++) {
|
|
|
+ res.append(ascii[temp[i]]);
|
|
|
+ }
|
|
|
+ return res.toString();
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 比较字节数组是否相同
|
|
|
+ * @param a
|
|
|
+ * @param b
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static boolean compareBytes(byte[] a, byte[] b) {
|
|
|
+ if (a == null || a.length == 0 || b == null || b.length == 0
|
|
|
+ || a.length != b.length) {
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+ if (a.length == b.length) {
|
|
|
+ for (int i = 0; i < a.length; i++) {
|
|
|
+ if (a[i] != b[i]) {
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+ /**
|
|
|
+ * 只比对指定长度byte
|
|
|
+ * @param a
|
|
|
+ * @param b
|
|
|
+ * @param len
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static boolean compareBytes(byte[] a, byte[] b, int len) {
|
|
|
+ if (a == null || a.length == 0 || b == null || b.length == 0
|
|
|
+ || a.length < len || b.length < len) {
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+ for (int i = 0; i < len; i++) {
|
|
|
+ if (a[i] != b[i]) {
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 将字节数组转换为二进制字符串
|
|
|
+ * @param items
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static String bytesToBinaryString(byte[] items) {
|
|
|
+ if (items == null || items.length == 0) {
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+ StringBuffer buf = new StringBuffer();
|
|
|
+ for (byte item : items) {
|
|
|
+ buf.append(byteToBinaryString(item));
|
|
|
+ }
|
|
|
+ return buf.toString();
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 将字节转换为二进制字符串
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static String byteToBinaryString(byte item) {
|
|
|
+ byte a = item;
|
|
|
+ StringBuffer buf = new StringBuffer();
|
|
|
+ for (int i = 0; i < 8; i++) {
|
|
|
+ buf.insert(0, a % 2);
|
|
|
+ a = (byte) (a >> 1);
|
|
|
+ }
|
|
|
+ return buf.toString();
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 对数组a,b进行异或运算
|
|
|
+ * @param a
|
|
|
+ * @param b
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static byte[] xor(byte[] a, byte[] b) {
|
|
|
+ if (a == null || a.length == 0 || b == null || b.length == 0
|
|
|
+ || a.length != b.length) {
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+ byte[] result = new byte[a.length];
|
|
|
+ for (int i = 0; i < a.length; i++) {
|
|
|
+ result[i] = (byte) (a[i] ^ b[i]);
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 对数组a,b进行异或运算 运算长度len
|
|
|
+ * @param a
|
|
|
+ * @param b
|
|
|
+ * @param len
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static byte[] xor(byte[] a, byte[] b, int len) {
|
|
|
+ if (a == null || a.length == 0 || b == null || b.length == 0) {
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+ if (a.length < len || b.length < len){
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+ byte[] result = new byte[len];
|
|
|
+ for (int i = 0; i < len; i++) {
|
|
|
+ result[i] = (byte) (a[i] ^ b[i]);
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+ /**
|
|
|
+ * 将short整型数值转换为字节数组
|
|
|
+ * @param num
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static byte[] shortToBytes(int num) {
|
|
|
+ byte[] temp = new byte[2];
|
|
|
+ for (int i = 0; i < 2; i++) {
|
|
|
+ temp[i] = (byte) ((num >>> (8 - i * 8)) & 0xFF);
|
|
|
+ }
|
|
|
+ return temp;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 将字节数组转为整型
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static int bytesToShort(byte[] arr) {
|
|
|
+ int mask = 0xFF;
|
|
|
+ int temp = 0;
|
|
|
+ int result = 0;
|
|
|
+ for (int i = 0; i < 2; i++) {
|
|
|
+ result <<= 8;
|
|
|
+ temp = arr[i] & mask;
|
|
|
+ result |= temp;
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 将整型数值转换为指定长度的字节数组
|
|
|
+ * @param num
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static byte[] intToBytes(int num) {
|
|
|
+ byte[] temp = new byte[4];
|
|
|
+ for (int i = 0; i < 4; i++) {
|
|
|
+ temp[i] = (byte) ((num >>> (24 - i * 8)) & 0xFF);
|
|
|
+ }
|
|
|
+ return temp;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 将整型数值转换为指定长度的字节数组
|
|
|
+ * @param src
|
|
|
+ * @param len
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static byte[] intToBytes(int src, int len) {
|
|
|
+ if (len < 1 || len > 4) {
|
|
|
+ return null;
|
|
|
+ }
|
|
|
+ byte[] temp = new byte[len];
|
|
|
+ for (int i = 0; i < len; i++) {
|
|
|
+ temp[len - 1 - i] = (byte) ((src >>> (8 * i)) & 0xFF);
|
|
|
+ }
|
|
|
+ return temp;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 将字节数组转换为整型数值
|
|
|
+ * @param arr
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static int bytesToInt(byte[] arr) {
|
|
|
+ int mask = 0xFF;
|
|
|
+ int temp = 0;
|
|
|
+ int result = 0;
|
|
|
+ for (int i = 0; i < 4; i++) {
|
|
|
+ result <<= 8;
|
|
|
+ temp = arr[i] & mask;
|
|
|
+ result |= temp;
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 将long整型数值转换为字节数组
|
|
|
+ * @param num
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static byte[] longToBytes(long num) {
|
|
|
+ byte[] temp = new byte[8];
|
|
|
+ for (int i = 0; i < 8; i++) {
|
|
|
+ temp[i] = (byte) ((num >>> (56 - i * 8)) & 0xFF);
|
|
|
+ }
|
|
|
+ return temp;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 将字节数组转换为long整型数值
|
|
|
+ * @param arr
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static long bytesToLong(byte[] arr) {
|
|
|
+ int mask = 0xFF;
|
|
|
+ int temp = 0;
|
|
|
+ long result = 0;
|
|
|
+ int len = Math.min(8, arr.length);
|
|
|
+ for (int i = 0; i < len; i++) {
|
|
|
+ result <<= 8;
|
|
|
+ temp = arr[i] & mask;
|
|
|
+ result |= temp;
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 功能描述:把两个字节的字节数组转化为整型数据,高位补零,例如:<br/>
|
|
|
+ * 有字节数组byte[] data = new byte[]{1,2};转换后int数据的字节分布如下:<br/>
|
|
|
+ * 00000000 00000000 00000001 00000010,函数返回258
|
|
|
+ * @param lenData 需要进行转换的字节数组
|
|
|
+ * @return 字节数组所表示整型值的大小
|
|
|
+ */
|
|
|
+ public static int bytesToIntWhereByteLengthEquals2(byte lenData[]) {
|
|
|
+ if(lenData.length != 2){
|
|
|
+ return -1;
|
|
|
+ }
|
|
|
+ byte fill[] = new byte[]{0,0};
|
|
|
+ byte real[] = new byte[4];
|
|
|
+ System.arraycopy(fill, 0, real, 0, 2);
|
|
|
+ System.arraycopy(lenData, 0, real, 2, 2);
|
|
|
+ int len = byteToInt(real);
|
|
|
+ return len;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 功能描述:将byte数组转化为int类型的数据
|
|
|
+ * @param byteVal 需要转化的字节数组
|
|
|
+ * @return 字节数组所表示的整型数据
|
|
|
+ */
|
|
|
+ public static int byteToInt(byte[] byteVal) {
|
|
|
+ int result = 0;
|
|
|
+ for(int i = 0;i < byteVal.length;i++) {
|
|
|
+ int tmpVal = (byteVal[i]<<(8*(3-i)));
|
|
|
+ switch(i) {
|
|
|
+ case 0:
|
|
|
+ tmpVal = tmpVal & 0xFF000000;
|
|
|
+ break;
|
|
|
+ case 1:
|
|
|
+ tmpVal = tmpVal & 0x00FF0000;
|
|
|
+ break;
|
|
|
+ case 2:
|
|
|
+ tmpVal = tmpVal & 0x0000FF00;
|
|
|
+ break;
|
|
|
+ case 3:
|
|
|
+ tmpVal = tmpVal & 0x000000FF;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ result = result | tmpVal;
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ public static byte CheckXORSum(byte[] bData){
|
|
|
+ byte sum = 0x00;
|
|
|
+ for (int i = 0; i < bData.length; i++) {
|
|
|
+ sum ^= bData[i];
|
|
|
+ }
|
|
|
+ return sum;
|
|
|
+ }
|
|
|
+ /**
|
|
|
+ * 从offset开始 将后续长度为len的byte字节转为int
|
|
|
+ * @param data
|
|
|
+ * @param offset
|
|
|
+ * @param len
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static int bytesToInt(byte[] data, int offset, int len){
|
|
|
+ int mask = 0xFF;
|
|
|
+ int temp = 0;
|
|
|
+ int result = 0;
|
|
|
+ len = Math.min(len, 4);
|
|
|
+ for (int i = 0; i < len; i++) {
|
|
|
+ result <<= 8;
|
|
|
+ temp = data[offset + i] & mask;
|
|
|
+ result |= temp;
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * byte字节数组中的字符串的长度
|
|
|
+ * @param data
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static int getBytesStringLen(byte[] data)
|
|
|
+ {
|
|
|
+ int count = 0;
|
|
|
+ for (byte b : data) {
|
|
|
+ if(b == 0x00)
|
|
|
+ break;
|
|
|
+ count++;
|
|
|
+ }
|
|
|
+ return count;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 对指定字符串进行异或预算
|
|
|
+ * @param arrays
|
|
|
+ * @return
|
|
|
+ */
|
|
|
+ public static String xorArrayStr(List<String> arrays){
|
|
|
+ if (arrays == null || arrays.size() <= 0)
|
|
|
+ return "";
|
|
|
+
|
|
|
+ int maxLong = -1;
|
|
|
+ byte []tmp[] = new byte[arrays.size()][];
|
|
|
+ for (int i=0,j=arrays.size()-1;i<=j;i++){
|
|
|
+ tmp[i] = getBytes(arrays.get(i), "UTF-8");
|
|
|
+ int longTmp = tmp[i].length;
|
|
|
+ if (maxLong == -1 || longTmp > maxLong)
|
|
|
+ maxLong = longTmp;
|
|
|
+ }
|
|
|
+ byte result[] = new byte[maxLong];
|
|
|
+ for (int k=0;k<maxLong;k++){
|
|
|
+ result[k] = 0;
|
|
|
+ for (int i=0,j=arrays.size()-1;i<=j;i++){
|
|
|
+ if (tmp[i].length-1 >= k)
|
|
|
+ result[k] = (byte)(result[k] ^ tmp[i][k]);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return getString(result, "UTF-8");
|
|
|
+ }
|
|
|
+
|
|
|
+ public static byte[] getBytes(char[] chars) {
|
|
|
+ Charset cs = Charset.forName("UTF-8");
|
|
|
+ CharBuffer cb = CharBuffer.allocate(chars.length);
|
|
|
+ cb.put(chars);
|
|
|
+ cb.flip();
|
|
|
+ ByteBuffer bb = cs.encode(cb);
|
|
|
+ return bb.array();
|
|
|
+ }
|
|
|
+
|
|
|
+ public static char[] getChars(byte[] bytes) {
|
|
|
+ Charset cs = Charset.forName("UTF-8");
|
|
|
+ ByteBuffer bb = ByteBuffer.allocate(bytes.length);
|
|
|
+ bb.put(bytes).flip();
|
|
|
+ CharBuffer cb = cs.decode(bb);
|
|
|
+ return cb.array();
|
|
|
+ }
|
|
|
+}
|