pipIrr-SV.git - Gitblit

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			@@ -0,0 +1,1554 @@
			package com.dy.common.util;

			import java.util.Locale;


			public class ByteUtil {

			/**
			* 将字节数组分割
			* @param bytes 被分割数组
			* @param fromIndex 分割起始位置
			* @param len 分割长度
			* @return 返回分割出来的数组
			*/
			public static byte[] bytesSplit(byte[] bytes, int fromIndex, int len){
			if(bytes == null){
			return null ;
			}else{
			byte[] bs = new byte[len] ;
			if(fromIndex + len > bytes.length){
			System.arraycopy(bytes, fromIndex, bs, 0, bytes.length - fromIndex) ;
			}else{
			System.arraycopy(bytes, fromIndex, bs, 0, len) ;
			}
			return bs ;
			}
			}
			/**
			* 将字节数组分割
			* @param bytes 被分割数组
			* @param fromIndex 分割起始位置
			* @param len 分割长度
			* @return 返回分割出来的数组
			*/
			public static Object[] bytesSplit_(byte[] bytes, int fromIndex, int len){
			if(bytes == null){
			return null ;
			}else{
			int realLen = len ;
			byte[] bs = new byte[len] ;
			if(fromIndex + len > bytes.length){
			System.arraycopy(bytes, fromIndex, bs, 0, bytes.length - fromIndex) ;
			realLen = bytes.length - fromIndex ;
			}else{
			System.arraycopy(bytes, fromIndex, bs, 0, len) ;
			}
			return new Object[]{bs, realLen} ;
			}
			}

			/**
			* 将字节数组合并到字节数组上
			* @param bGroup1 被合并数组
			* @param bGroup2 合并数组
			* @return 返回合并后数组
			*/
			public static byte[] bytesMerge(byte[] bGroup1, byte[] bGroup2){
			if(bGroup1 == null && bGroup2 == null){
			return null ;
			}else if(bGroup1 == null && bGroup2 != null){
			return bGroup2 ;
			}else if(bGroup1 != null && bGroup2 == null){
			return bGroup1 ;
			}else{
			//dest != null && append != null
			byte[] bs = new byte[bGroup1.length + bGroup2.length] ;
			System.arraycopy(bGroup1, 0, bs, 0, bGroup1.length) ;
			System.arraycopy(bGroup2, 0, bs, bGroup1.length, bGroup2.length) ;
			return bs ;
			}
			}

			/**
			* 判断所有字节是否为0xFF
			* @param bs 字节数组
			* @param index 下标位
			* @param len 长度
			* @return 返回返回
			*/
			public static boolean bytesIsAll0xFF(byte[] bs, int index, int len){
			int count = 0 ;
			for(int i = index; i < index + len; i++){
			if(bs[i] == (byte)0xFF){
			count++ ;
			}
			}
			return count == len;
			}

			/**
			* 二进制转十进制数
			* @param str 二进制字符串
			* @return 返回
			*/
			public static int binary2Int(String str) {
			return Integer.parseInt(str, 2);
			}


			/**
			* 字节转存二进制
			*
			* @param b byte
			* @return 返回 String
			*/
			public static String byte2Binary(byte b) {
			return Integer.toBinaryString(b & 0xFF) ;
			}
			/**
			* 字节转存8位二进制
			*
			* @param b byte
			* @return 返回 String
			*/
			public static String byte2bit8Binary(byte b) {
			String s = byte2Binary(b);
			int len = s.length();
			for (int i = 0; i < 8 - len; i++) {
			s = "0" + s;
			}
			return s;
			}

			/**
			* 字节数取出8个bit
			* @param b 字节数
			* @return 返回 String
			*/
			public static byte[] getBit(byte b) {
			byte[] bs = new byte[8] ;
			bs[0] = (byte)(b & 1) ;
			bs[1] = (byte)((b & 2) >> 1) ;
			bs[2] = (byte)((b & 4) >> 2) ;
			bs[3] = (byte)((b & 8) >> 3) ;
			bs[4] = (byte)((b & 16) >> 4) ;
			bs[5] = (byte)((b & 32) >> 5) ;
			bs[6] = (byte)((b & 64) >> 6) ;
			bs[7] = (byte)((b & 128) >> 7) ;
			return bs;
			}

			/**
			* 字节数取出bit
			* @param b 字节数
			* @param index 下标位
			* @throws Exception 异常
			* @return 返回 String
			*/
			public static byte getBit(byte b, byte index) throws Exception {
			if(index == 0){
			return (byte)(b & 1) ;
			}else if(index == 1){
			return (byte)((b & 2) >> 1) ;
			}else if(index == 2){
			return (byte)((b & 4) >> 2) ;
			}else if(index == 3){
			return (byte)((b & 8) >> 3) ;
			}else if(index == 4){
			return (byte)((b & 16) >> 4) ;
			}else if(index == 5){
			return (byte)((b & 32) >> 5) ;
			}else if(index == 6){
			return (byte)((b & 64) >> 6) ;
			}else if(index == 7){
			return (byte)((b & 128) >> 7) ;
			}
			return 0;
			}


			/**
			* 一个字节转正整数
			*
			* @param b
			* byte
			* @throws Exception 异常
			* @return 返回 String
			*/
			public static Short byte2PlusInt(byte b) throws Exception {
			short v = b ;
			if(v < 0){
			v = (short)(255 + v + 1) ;
			}
			return v ;
			}


			/**
			* 大端模式《数据低位在数组高字节》
			* double转换byte
			* @param bs 字节数组 byte[]
			* @param value double double类型的参数
			* @param from 开始位 int
			*/
			public static void double2Bytes_BE(byte[] bs, double value, int from)throws Exception {
			boolean b = isOutOfArrLength(bs.length, (from - 1) + 8);
			if (b) {
			long2Bytes_BE(bs, Double.doubleToLongBits(value), from);
			} else {
			throw new Exception("double2Bytes时数组越界");
			}
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* double转换byte，字节顺序是倒的
			* @param bs 字节数组 byte[]
			* @param value double double类型的参数
			* @param from 开始位 int
			*/
			public static void double2Bytes_LE(byte[] bs, double value, int from)throws Exception {
			boolean b = isOutOfArrLength(bs.length, (from - 1) + 8);
			if (b) {
			long2Bytes_LE(bs, Double.doubleToLongBits(value), from);
			} else {
			throw new Exception("double2Bytes时数组越界");
			}
			}

			/**
			* 大端模式《数据低位在数组高字节》
			* byte转换double
			* @param bs 字节数组 byte[]
			* @param from 开始位 int
			*/
			public static double bytes2Double_BE(byte[] bs, int from) throws Exception {
			long l = bytes2Long_BE(bs, from);
			return Double.longBitsToDouble(l);
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* byte转换double，字节顺序是倒的
			* @param bs 字节数组 byte[]
			* @param from 开始位 int
			*/
			public static double bytes2Double_LE(byte[] bs, int from) throws Exception {
			long l = bytes2Long_LE(bs, from);
			return Double.longBitsToDouble(l);
			}

			/**
			* 大端模式《数据低位在数组高字节》
			* float转换byte
			* @value bs byte[]
			* @value value float float类型的参数
			* @value from int
			*/
			public static void float2Bytes_BE(byte[] bs, float value, int from)
			throws Exception {
			boolean b = isOutOfArrLength(bs.length, (from - 1) + 4);
			if (b) {
			Integer it = Float.floatToIntBits(value);
			int2Bytes_BE(bs, it, from);
			} else {
			throw new Exception("float2Bytes时数组越界");
			}
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* float转换byte，字节顺序是倒的
			* @value bs byte[]
			* @value value float float类型的参数
			* @value from int
			*/
			public static void float2Bytes_LE(byte[] bs, float value, int from) throws Exception {
			boolean b = isOutOfArrLength(bs.length, (from - 1) + 4);
			if (b) {
			Integer it = Float.floatToIntBits(value);
			int2Bytes_LE(bs, it, from);
			} else {
			throw new Exception("float2Bytes时数组越界");
			}
			}

			/**
			* 大端模式《数据低位在数组高字节》
			* byte转换float
			* @value bs byte[]
			* @value from int
			*/
			public static float bytes2Float_BE(byte[] bs, int from) throws Exception {
			int i = bytes2Int_BE(bs, from);
			return Float.intBitsToFloat(i);
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* byte转换float，字节顺序是倒的
			* @value bs byte[]
			* @value from int
			*/
			public static float bytes2Float_LE(byte[] bs, int from) throws Exception {
			int i = bytes2Int_LE(bs, from);
			return Float.intBitsToFloat(i);
			}


			/**
			* 大端模式《数据低位在数组高字节》
			* 转换long型为byte数组
			* @value bs byte[]
			* @value value long
			* @value from int
			*/
			public static void long2Bytes_BE(byte[] bs, long value, int from)throws Exception {
			boolean b = isOutOfArrLength(bs.length, (from - 1) + 8);
			if (b) {
			for (int i = 7; i >= 0; i--) {
			bs[from + i] = Long.valueOf(value & 0xff).byteValue();// 将最低位保存在最低位
			value = value >> 8; // 向右移8位
			if(value == 0){
			break ;
			}
			}
			} else {
			throw new Exception("long2Bytes时数组越界");
			}
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* 转换long型为byte数组
			* @value bs byte[]
			* @value value long
			* @value from int
			*/
			public static void long2Bytes_LE(byte[] bs, long value, int from)throws Exception {
			boolean b = isOutOfArrLength(bs.length, (from - 1) + 8);
			if (b) {
			for (int i = 0; i < 8; i++) {
			bs[from + i] = Long.valueOf(value & 0xff).byteValue();
			value = value >> 8;
			if(value == 0){
			break ;
			}
			}
			} else {
			throw new Exception("long2Bytes时数组越界");
			}
			}

			/**
			* 大端模式《数据低位在数组高字节》
			* 8位字节数组转换为长整型
			* @param bs 字节数组 byte[]
			* @return 返回
			*/
			public static long bytes2Long_BE(byte[] bs) {
			int len = bs.length ;
			if (len > 0) {
			long l = 0;
			long[] ls = new long[len] ;
			for(int i = 0 ; i < len; i++){
			ls[i] = bs[i] & 0xFF ;
			}
			for(int i = len-1 ; i >= 0; i--){
			ls[(len - 1) - i] <<= 8 * i ;
			}
			for(int i = 0 ; i < len; i++){
			l = l \| ls[i] ;
			}
			return l;
			}
			return 0L ;
			}

			/**
			* 大端模式《数据低位在数组高字节》
			* 8位字节数组转换为长整型
			* @param bs 字节数组 byte[]
			* @param from 开始位 int
			* @return 返回
			*/
			public static long bytes2Long_BE(byte[] bs, int from) throws Exception {
			boolean b = isOutOfArrLength(bs.length, (from - 1) + 8);
			if (b) {
			long s = 0;
			long s0 = bs[from + 0] & 0xFF ;// 最低位
			long s1 = bs[from + 1] & 0xFF ;
			long s2 = bs[from + 2] & 0xFF ;
			long s3 = bs[from + 3] & 0xFF ;
			long s4 = bs[from + 4] & 0xFF ;
			long s5 = bs[from + 5] & 0xFF ;
			long s6 = bs[from + 6] & 0xFF ;
			long s7 = bs[from + 7] & 0xFF ;

			// s7不变
			s6 <<= 8;
			s5 <<= 16;
			s4 <<= 24;
			s3 <<= 8 * 4;
			s2 <<= 8 * 5;
			s1 <<= 8 * 6;
			s0 <<= 8 * 7;
			s = s0 \| s1 \| s2 \| s3 \| s4 \| s5 \| s6 \| s7;
			return s;
			} else {
			throw new Exception("byte2Long时数组越界");
			}
			}
			/**
			* 大端模式《数据低位在数组高字节》
			* 8位字节数组转换为长整型
			* @param bs 字节数组 byte[]
			* @param from 开始位 int
			* @param end int
			* @return 返回
			*/
			public static long bytes2Long_BE(byte[] bs, int from, int end) throws Exception {
			boolean b = isOutOfArrLength(bs.length, end);
			if (b) {
			short len = (short)(end - from + 1) ;
			long[] ls = new long[len] ;
			for(short i = 0 ; i < len; i++){
			ls[i] = bs[from + i] & 0xFF ;
			}
			for(short i = (short)(len-1) ; i >= 0; i--){
			ls[i] <<= 8 * (len - (i + 1)) ;
			}
			long s = 0;
			for(short i = 0 ; i < len; i++){
			s = s \| ls[i] ;
			}
			return s;
			} else {
			throw new Exception("byte2Long时数组越界");
			}
			}



			/**
			* 小端模式《数据低位在数组低字节》
			* 8位字节数组转换为长整型
			* @param bs 字节数组 byte[]
			* @return 返回
			*/
			public static long bytes2Long_LE(byte[] bs) {
			int len = bs.length ;
			if (len > 0) {
			long l = 0;
			long[] ls = new long[len] ;
			for(int i = 0 ; i < len; i++){
			ls[i] = bs[i] & 0xFF ;
			}
			for(int i = 0 ; i < len; i++){
			ls[(len - 1) - i] <<= 8 * i ;
			}
			for(int i = 0 ; i < len; i++){
			l = l \| ls[i] ;
			}
			return l;
			}
			return 0L ;
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* 8位字节数组转换为长整型
			* @param bs 字节数组 byte[]
			* @param from 开始位 int
			* @return 返回
			*/
			public static long bytes2Long_LE(byte[] bs, int from) throws Exception {
			boolean b = isOutOfArrLength(bs.length, (from - 1) + 8);
			if (b) {
			long s = 0;
			long s0 = bs[from] & 0xFF ;// 最低位
			long s1 = bs[from + 1] & 0xFF ;
			long s2 = bs[from + 2] & 0xFF ;
			long s3 = bs[from + 3] & 0xFF ;
			long s4 = bs[from + 4] & 0xFF ;
			long s5 = bs[from + 5] & 0xFF ;
			long s6 = bs[from + 6] & 0xFF ;
			long s7 = bs[from + 7] & 0xFF ;

			// s0不变
			s1 <<= 8;
			s2 <<= 16;
			s3 <<= 24;
			s4 <<= 8 * 4;
			s5 <<= 8 * 5;
			s6 <<= 8 * 6;
			s7 <<= 8 * 7;
			s = s0 \| s1 \| s2 \| s3 \| s4 \| s5 \| s6 \| s7;
			return s;
			} else {
			throw new Exception("byte2Long时数组越界");
			}
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* 8位字节数组转换为长整型
			* @param bs 字节数组 byte[]
			* @param from 开始位 int
			* @param end int
			* @return 返回
			*/
			public static long bytes2Long_LE(byte[] bs, int from, int end) throws Exception {
			boolean b = isOutOfArrLength(bs.length, end);
			if (b) {
			short len = (short)(end - from + 1) ;
			long[] ls = new long[len] ;
			for(short i = 0 ; i < len; i++){
			ls[i] = bs[from + i] & 0xFF ;
			}
			for(short i = 0 ; i < len; i++){
			ls[i] <<= 8 * i ;
			}
			long s = 0;
			for(short i = 0 ; i < len; i++){
			s = s \| ls[i] ;
			}
			return s;
			} else {
			throw new Exception("byte2Long时数组越界");
			}
			}
			/**
			* 大端模式《数据低位在数组高字节》
			* int类型转换成4位byte数组
			* @value bs byte[]
			* @value value int int类型的参数
			* @value from int
			*/
			public static void int2Bytes_BE(byte[] bs, int value, int from)throws Exception {
			boolean b = isOutOfArrLength(bs.length, (from - 1) + 4);
			if (b) {
			for (int i = 3; i >= 0; i--) {
			bs[from + i] = Integer.valueOf(value & 0xff).byteValue();// 将最低位保存在高字节
			value = value >> 8; // 向右移8位
			if(value == 0){
			break ;
			}
			}
			} else {
			throw new Exception("int2Bytes时数组越界");
			}
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* int类型转换成4位byte数组，字节顺序是倒的
			* @value bs byte[]
			* @value value int int类型的参数
			* @value from int
			*/
			public static void int2Bytes_LE(byte[] bs, int value, int from)throws Exception {
			boolean b = isOutOfArrLength(bs.length, (from - 1) + 4);
			if (b) {
			for (int i = 0; i < 4; i++) {
			bs[from + i] = Integer.valueOf(value & 0xff).byteValue();// 将最低位保存在低字节
			value = value >> 8; // 向右移8位
			if(value == 0){
			break ;
			}
			}
			} else {
			throw new Exception("int2Bytes时数组越界");
			}
			}

			/**
			* 大端模式《数据低位在数组高字节》
			* 4位字节数组转换为整型
			* @param bs 字节数组
			* @param from 开始位
			* @return 返回
			*/
			public static int bytes2Int_BE(byte[] bs, int from) throws Exception {
			boolean b = isOutOfArrLength(bs.length, (from - 1) + 4);
			if (b) {
			int s = 0;
			int s0 = bs[from + 0] & 0xFF ;// 最低位
			int s1 = bs[from + 1] & 0xFF ;
			int s2 = bs[from + 2] & 0xFF ;
			int s3 = bs[from + 3] & 0xFF ;

			// s3不变
			s2 <<= 8;
			s1 <<= 16;
			s0 <<= 24;
			s = s0 \| s1 \| s2 \| s3;
			return s;
			} else {
			throw new Exception("byte2Int时数组越界");
			}
			}


			/**
			* 小端模式《数据低位在数组低字节》
			* 4位字节数组转换为整型，字节顺序是倒的
			* @param bs 字节数组字节数组
			* @return 返回
			*/
			public static int bytes2Int_LE(byte[] bs, int from) throws Exception {
			boolean b = isOutOfArrLength(bs.length, (from - 1) + 4);
			if (b) {
			int s = 0;
			int s0 = bs[from + 0] & 0xFF ;// 最低位
			int s1 = bs[from + 1] & 0xFF ;
			int s2 = bs[from + 2] & 0xFF ;
			int s3 = bs[from + 3] & 0xFF ;

			// s0不变
			s1 <<= 8;
			s2 <<= 16;
			s3 <<= 24;
			s = s0 \| s1 \| s2 \| s3;
			return s;
			} else {
			throw new Exception("byte2Int时数组越界");
			}
			}


			/**
			* 大端模式《数据低位在数组高字节》
			* short类型转换成byte数组
			* @value bs byte[]
			* @value value short
			* @value from int
			*/
			public static void short2Bytes_BE(byte[] bs, short value, int from)throws Exception {
			boolean b = isOutOfArrLength(bs.length, (from - 1) + 2);
			if (b) {
			for (int i = 1; i >= 0 ; i--) {
			bs[from + i] = Integer.valueOf(value & 0xff).byteValue();// 将低位保存在高字节
			value = (short) (value >> 8); // 向右移8位
			}
			} else {
			throw new Exception("short2Bytes时数组越界");
			}
			}


			/**
			* 小端模式《数据低位在数组低字节》
			* short类型转换成byte数组，字节顺序是倒的
			* @value bs byte[]
			* @value value short
			* @value from int
			*/
			public static void short2Bytes_LE(byte[] bs, short value, int from)throws Exception {
			boolean b = isOutOfArrLength(bs.length, (from - 1) + 2);
			if (b) {
			for (int i = 0; i < 2; i++) {
			bs[from + i] = Integer.valueOf(value & 0xff).byteValue();// 将最低位保存在低字节
			value = (short) (value >> 8); // 向右移8位
			}
			} else {
			throw new Exception("short2Bytes时数组越界");
			}
			}

			/**
			* 大端模式《数据低位在数组高字节》
			* short类型转换成byte数组
			* @value value short
			* @value from int
			*/
			public static byte[] short2Bytes_BE(short value)throws Exception {
			byte[] bs = new byte[2] ;
			for (int i = 1; i >= 0 ; i--) {
			bs[i] = (byte)(value & 0xff) ;// 将低位保存在高字节
			value = (short) (value >> 8); // 向右移8位
			}
			return bs ;
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* short类型转换成byte数组，字节顺序是倒的
			* @value value short
			* @value from int
			*/
			public static byte[] short2Bytes_LE(short value)throws Exception {
			byte[] bs = new byte[2] ;
			for (int i = 0; i < 2; i++) {
			bs[i] = (byte)(value & 0xff) ;// 将最低位保存在低字节
			value = (short) (value >> 8); // 向右移8位
			}
			return bs ;
			}

			/**
			* 大端模式《数据低位在数组高字节》
			* 2位字节数组转换为短整型
			* @param bs 字节数组字节数组
			* @return 返回
			*/
			public static short bytes2Short_BE(byte[] bs, int from) throws Exception {
			boolean b = isOutOfArrLength(bs.length, (from - 1) + 2);
			if (b) {
			int s = 0;
			int s0 = bs[from + 0] & 0xFF ;
			int s1 = bs[from + 1] & 0xFF ;

			// s1不变
			s0 <<= 8;
			s = s0 \| s1;
			return (short)s ;
			} else {
			throw new Exception("byte2Short时数组越界");
			}
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* 2位字节数组转换为短整型，字节顺序是倒的
			* @param bs 字节数组字节数组
			* @return 返回
			*/
			public static short bytes2Short_LE(byte[] bs, int from) throws Exception {
			boolean b = isOutOfArrLength(bs.length, (from - 1) + 2);
			if (b) {
			int s = 0;
			int s0 = bs[from + 0] & 0xFF ;
			int s1 = bs[from + 1] & 0xFF ;

			// s0不变
			s1 <<= 8;
			s = s0 \| s1;
			return (short) s;

			} else {
			throw new Exception("byte2Short时数组越界");
			}
			}
			/**
			* 字符到一字节转换
			*
			* @value bs byte[]
			* @value ch char char类型的参数
			* @value index int
			* @return 返回
			*/
			public static void char2Bytes(byte[] bs, char ch, int index)throws Exception {
			boolean b = isOutOfArrLength(bs.length, index);
			if (b) {
			bs[index] = (byte) ch;
			} else {
			throw new Exception("char2Bytes时数组越界");
			}
			}

			/**
			* 一字节转换为字符
			* @param bs 字节数组字节数组
			* @value index int
			* @return 返回
			*/
			public static char bytes2Char(byte[] bs, int index) throws Exception {
			boolean b = isOutOfArrLength(bs.length, index);
			if (b) {
			return (char) bs[index];
			} else {
			throw new Exception("byte2Char时数组越界");
			}
			}

			/**
			* 字符串型数字转成byte
			*
			* @param s
			* @return 返回
			* @throws Exception 异常
			*/
			public static byte string2byte(String s) throws Exception {
			int n ;
			try {
			n = Integer.parseInt(s);
			} catch (Exception e) {
			throw new Exception("字符串型数字字节时出错，不是合法数字:" + s, null);
			}
			return (byte) n;
			}

			/**
			* 大端模式《数据低位在数组高字节》
			* 字符串转换成byte数组
			* @value bs byte[]
			* @value str String
			* @value from int
			* @return 返回
			* @throws java.io.UnsupportedEncodingException
			*/
			public static int string2Bytes_BE(byte[] bs, String str, int from, int end)throws Exception {
			byte[] bb = str.getBytes();
			boolean b = isOutOfArrLength(bs.length, (from -1 + bb.length));
			if (b) {
			if(end - from + 1 < bb.length){
			throw new Exception("string2Bytes时，字符串转成的字节数组超过的协议定义的长度 ");
			}else{
			for (int i = 0; i < bb.length; i++) {
			bs[from + i] = bb[i];
			}
			}
			} else {
			throw new Exception("string2Bytes时数组越界");
			}
			return bb.length ;
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* 字符串转换成byte数组
			* @value bs byte[]
			* @value str String
			* @value from int
			* @return 返回
			* @throws java.io.UnsupportedEncodingException
			*/
			public static int string2Bytes_LE(byte[] bs, String str, int from, int end)throws Exception {
			byte[] bb = str.getBytes();
			boolean b = isOutOfArrLength(bs.length, (from -1 + bb.length));
			if (b) {
			if(end - from + 1 < bb.length){
			throw new Exception("string2Bytes时，字符串转成的字节数组超过的协议定义的长度 ");
			}else{
			for (int i = bb.length - 1; i >= 0; i--) {
			bs[from + i] = bb[i];
			}
			}
			} else {
			throw new Exception("string2Bytes时数组越界");
			}
			return bb.length ;
			}

			/**
			* 大端模式《数据低位在数组高字节》
			* 字符串转换成byte数组
			* @value bs byte[]
			* @value str String
			* @value from int
			* @return 返回
			* @throws java.io.UnsupportedEncodingException
			*/
			public static int string2Bytes_BE(byte[] bs, String str, int from)throws Exception {
			byte[] bb = str.getBytes();
			boolean b = isOutOfArrLength(bs.length, (from -1 + bb.length));
			if (b) {
			for (int i = 0; i < bb.length; i++) {
			bs[from + i] = bb[i];
			}
			} else {
			throw new Exception("string2Bytes时数组越界");
			}
			return bb.length ;
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* 字符串转换成byte数组
			* @value bs byte[]
			* @value str String
			* @value from int
			* @return 返回
			* @throws java.io.UnsupportedEncodingException
			*/
			public static int string2Bytes_LE(byte[] bs, String str, int from)throws Exception {
			byte[] bb = str.getBytes();
			boolean b = isOutOfArrLength(bs.length, (from -1 + bb.length));
			if (b) {
			for (int i = bb.length-1; i >= 0; i--) {
			bs[from + i] = bb[i];
			}
			} else {
			throw new Exception("string2Bytes时数组越界");
			}
			return bb.length ;
			}

			/**
			* 大端模式《数据低位在数组高字节》
			* byte数组转换成字符串
			* @value bs byte[]
			* @value str String
			* @value from int
			* @throws java.io.UnsupportedEncodingException
			*/
			public static String bytes2String_BE(byte[] bs, int from, int end)throws Exception {
			byte[] bb = new byte[end - from + 1];
			int count = 0 ;
			for (int i = from; i <= end; i++) {
			bb[count++] = bs[i];
			}
			return new String(bb);
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* byte数组转换成字符串
			* @value bs byte[]
			* @value str String
			* @value from int
			* @throws java.io.UnsupportedEncodingException
			*/
			public static String bytes2String_LE(byte[] bs, int from, int end)throws Exception {
			byte[] bb = new byte[end - from + 1];
			int count = 0 ;
			for (int i = end; i >= from; i--) {
			bb[count++] = bs[i];
			}
			return new String(bb);
			}

			/**
			* 判断数组下标是否越界
			*
			* @value bsLength 数组总长度
			* @value toSite 数组偏移量
			* @return 返回
			*/
			private static boolean isOutOfArrLength(int bsLength, int toSite) {
			if (bsLength > toSite) {
			return true;
			} else {
			return false;
			}
			}


			/**
			* 字节数组转换成十六进制的字符串
			*
			* @param src byte[]
			* @param hasBlank 16进制是否用空格分隔
			* @return 返回 String
			*/
			public static String bytes2Hex(byte[] src, boolean hasBlank){
			return bytes2Hex_BE(src, hasBlank) ;
			}

			/**
			* 字节数组转换成十六进制的字符串
			*
			* @param src byte[]
			* @param hasBlank 16进制是否用空格分隔
			* @return 返回 String
			*/
			public static String bytes2Hex_BE(byte[] src, boolean hasBlank){
			StringBuilder stringBuilder = new StringBuilder("");
			if (src == null \|\| src.length <= 0) {
			return null;
			}
			for (int i = 0; i < src.length; i++) {
			int v = src[i] & 0xFF;
			String str = Integer.toHexString(v);
			if (str.length() < 2) {
			str = "0" + str;
			}
			if (hasBlank) {
			if (i == 0) {
			stringBuilder.append(str);
			} else {
			stringBuilder.append(" " + str);
			}
			} else {
			stringBuilder.append(str);
			}
			}
			return stringBuilder.toString().toUpperCase(Locale.US);
			}
			/**
			* 字节数组转换成十六进制的字符串
			*
			* @param src byte[]
			* @param hasBlank 16进制是否用空格分隔
			* @return 返回 String
			*/
			public static String bytes2Hex_LE(byte[] src, boolean hasBlank){
			StringBuilder stringBuilder = new StringBuilder("");
			if (src == null \|\| src.length <= 0) {
			return null;
			}
			for (int i = src.length - 1 ; i >= 0; i--) {
			int v = src[i] & 0xFF;
			String str = Integer.toHexString(v);
			if (str.length() < 2) {
			str = "0" + str;
			}
			if (hasBlank) {
			if (i == 0) {
			stringBuilder.append(str);
			} else {
			stringBuilder.append(" " + str);
			}
			} else {
			stringBuilder.append(str);
			}
			}
			return stringBuilder.toString().toUpperCase(Locale.US);
			}
			/**
			* 字节数组转换成十六进制的字符串
			*
			* @param bs byte[]
			* @param hasBlank 16进制是否用空格分隔
			* @param from 开始位
			* @param len 长度
			* @return 返回 String
			*/
			public static String bytes2Hex(byte[] bs, boolean hasBlank, int from, int len){
			if (bs == null \|\| bs.length <= 0 \|\| bs.length < from + len) {
			return null;
			}
			byte[] bb = new byte[len];
			for (int i = 0 ; i < len; i++) {
			bb[i] = bs[from + i];
			}
			return bytes2Hex(bb, hasBlank) ;
			}
			/**
			* 字节数组转换成十六进制的字符串
			*
			* @param bs byte[]
			* @param hasBlank 16进制是否用空格分隔
			* @param from 开始位
			* @param len 长度
			* @return 返回 String
			*/
			public static String bytes2Hex_LE(byte[] bs, boolean hasBlank, int from, int len){
			if (bs == null \|\| bs.length <= 0 \|\| bs.length < from + len) {
			return null;
			}
			byte[] bb = new byte[len];
			for (int i = 0 ; i < len; i++) {
			bb[i] = bs[from + i];
			}
			return bytes2Hex_LE(bb, hasBlank) ;
			}
			/**
			* 十六进制转字节数组
			* @param hex the hex string
			* @return 返回 byte[]
			*/
			public static byte[] hex2Bytes(String hex) {
			if (hex == null \|\| hex.equals("")) {
			return null;
			}
			hex = hex.toUpperCase(Locale.ENGLISH);
			int length = hex.length() / 2;
			char[] hexChars = hex.toCharArray();
			byte[] d = new byte[length];
			for (int i = 0; i < length; i++) {
			int pos = i * 2;
			d[i] = (byte) (charToByte(hexChars[pos]) << 4 \| charToByte(hexChars[pos + 1]));
			}
			return d;
			}
			/**
			* 十六进制转字节数组
			* @param hex the hex string
			* @return 返回 byte[]
			*/
			public static int hex2Bytes(String hex, byte[] bs, int fromIndex) {
			if (hex == null \|\| hex.equals("")) {
			return fromIndex;
			}
			hex = hex.toUpperCase(Locale.ENGLISH);
			int length = hex.length() / 2;
			char[] hexChars = hex.toCharArray();
			byte[] d = new byte[length];
			for (int i = 0; i < length; i++) {
			int pos = i * 2;
			d[i] = (byte) (charToByte(hexChars[pos]) << 4 \| charToByte(hexChars[pos + 1]));
			}
			for(int i = 0 ; i < d.length; i++){
			bs[fromIndex++] = d[i] ;
			}
			return fromIndex ;
			}

			/**
			* 十六进制转字节数组
			* @param hex the hex string
			* @return 返回 byte[]
			*/
			public static int hex2Bytes_LE(String hex, byte[] bs, int fromIndex) {
			if (hex == null \|\| hex.equals("")) {
			return fromIndex;
			}
			hex = hex.toUpperCase(Locale.ENGLISH);
			int length = hex.length() / 2;
			char[] hexChars = hex.toCharArray();
			byte[] d = new byte[length];
			for (int i = 0; i < length; i++) {
			int pos = i * 2;
			d[i] = (byte) (charToByte(hexChars[pos]) << 4 \| charToByte(hexChars[pos + 1]));
			}
			for(int i = 0 ; i < d.length; i++){
			bs[fromIndex++] = d[(d.length - 1) - i] ;
			}
			return fromIndex ;
			}


			/**
			* Convert char to byte
			* @param c char
			* @return 返回 byte
			*/
			private static byte charToByte(char c) {
			return (byte) "0123456789ABCDEF".indexOf(c);
			}


			/**
			* 大端模式《数据低位在数组高字节》
			* 整形转成BCD编码
			* @param i
			* @return 返回
			*/
			public static byte[] int2BCD_BE(int i)throws Exception {
			String str = "" + i;
			byte[] b = null;
			if (str.length() % 2 == 0) {
			b = new byte[str.length() / 2];
			} else {
			b = new byte[(str.length() / 2) + 1];
			}
			encodeBCD_BE(str, b, 0, b.length);

			return b;
			}
			/**
			* 小端模式《数据低位在数组低字节》
			* 整形转成BCD编码，字节顺序是倒的
			* @param i
			* @return 返回
			*/
			public static byte[] int2BCD_LE(int i)throws Exception {
			String str = "" + i;
			byte[] b = null;
			if (str.length() % 2 == 0) {
			b = new byte[str.length() / 2];
			} else {
			b = new byte[(str.length() / 2) + 1];
			}
			encodeBCD_LE(str, b, 0, b.length);

			return b;
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* 整形转成BCD编码，字节顺序是倒的
			* @param i
			* @param bs
			* @param from
			* @return 返回
			*/
			public static void int2BCD_LE(int i, byte[] bs, int from)throws Exception {
			String str = "" + i;
			byte[] b = null;
			if (str.length() % 2 == 0) {
			b = new byte[str.length() / 2];
			} else {
			b = new byte[(str.length() / 2) + 1];
			}
			encodeBCD_LE(str, b, 0, b.length);

			int len = bs.length ;
			int bLen = b.length ;
			for(int j = 0; (j < len && j < bLen); j++){
			bs[from + j] = b[j] ;
			}
			}

			/**
			* 大端模式《数据低位在数组高字节》
			* 长整形转成BCD编码
			* @param l
			* @return 返回
			*/
			public static byte[] long2BCD_BE(long l)throws Exception {
			String str = "" + l;
			byte[] b = null;
			if (str.length() % 2 == 0) {
			b = new byte[str.length() / 2];
			} else {
			b = new byte[(str.length() / 2) + 1];
			}
			encodeBCD_BE(str, b, 0, b.length);

			return b;
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* 长整形转成BCD编码，字节顺序是倒的
			* @param l
			* @return 返回
			*/
			public static byte[] long2BCD_LE(long l) throws Exception {
			String str = "" + l;
			byte[] b = null;
			if (str.length() % 2 == 0) {
			b = new byte[str.length() / 2];
			} else {
			b = new byte[(str.length() / 2) + 1];
			}
			encodeBCD_LE(str, b, 0, b.length);

			return b;
			}

			/**
			* 大端模式《数据低位在数组高字节》
			* 字符串型数字转成BCD编码
			* @param s
			* @return 返回
			* @throws Exception 异常
			*/
			public static byte[] string2BCD_BE(String s) throws Exception {
			byte[] b ;
			if (s.length() % 2 == 0) {
			b = new byte[s.length() / 2];
			} else {
			b = new byte[(s.length() / 2) + 1];
			}

			encodeBCD_BE(s, b, 0, b.length);

			return b ;
			}

			/**
			* 大端模式《数据低位在数组高字节》
			* 字符串转换成byte数组
			* @value bs byte[]
			* @value str String
			* @value fromIndex int
			* @return 返回
			* @throws Exception 异常异常
			*/
			public static int string2BCD_BE(byte[] bs, String str, int fromIndex)throws Exception {
			byte[] bb = string2BCD_BE(str);
			boolean b = isOutOfArrLength(bs.length, (fromIndex -1 + bb.length));
			if (b) {
			for (int i = 0; i < bb.length; i++) {
			bs[fromIndex + i] = bb[i];
			}
			} else {
			throw new Exception("string2BCD时数组越界");
			}
			return bb.length ;
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* 字符串型数字转成BCD编码，字节顺序是倒的
			* @param s
			* @return 返回
			* @throws Exception 异常
			*/
			public static byte[] string2BCD_LE(String s) throws Exception {
			byte[] b = null;
			if (s.length() % 2 == 0) {
			b = new byte[s.length() / 2];
			} else {
			b = new byte[(s.length() / 2) + 1];
			}
			encodeBCD_LE(s, b, 0, b.length);

			return b;
			}

			/**
			* 小端模式《数据低位在数组高字节》
			* 字符串转换成byte数组
			* @value bs byte[]
			* @value str String
			* @value fromIndex int
			* @return 返回
			* @throws Exception 异常异常
			*/
			public static int string2BCD_LE(byte[] bs, String str, int fromIndex)throws Exception {
			byte[] bb = string2BCD_LE(str);
			boolean b = isOutOfArrLength(bs.length, (fromIndex -1 + bb.length));
			if (b) {
			for (int i = bb.length-1; i >= 0 ; i--) {
			bs[fromIndex + i] = bb[i];
			}
			} else {
			throw new Exception("string2BCD时数组越界");
			}
			return bb.length ;
			}


			/**
			* 大端模式《数据低位在数组高字节》
			* BCD编码转成整型
			* @param b
			* @return 返回
			* @throws Exception 异常
			*/
			public static int BCD2Int_BE(byte b) throws Exception {
			String str = "";
			str = decodeBCD_BE(new byte[] { b }, 0, 1);
			int n = Integer.parseInt(str);
			return n;
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* BCD编码转成整型，字节顺序是倒的
			* @param b
			* @return 返回
			* @throws Exception 异常
			*/
			public static int BCD2Int_LE(byte b) throws Exception {
			String str = "";
			str = decodeBCD_LE(new byte[] { b }, 0, 1);
			int n = Integer.parseInt(str);
			return n;
			}

			/**
			* 大端模式《数据低位在数组高字节》
			* BCD编码转成整型
			* @param b
			* @param startIndex
			* @param endIndex
			* @return 返回
			* @throws Exception 异常
			*/
			public static int BCD2Int_BE(byte[] b, int startIndex, int endIndex)throws Exception {
			String str = "";
			str = decodeBCD_BE(b, startIndex, endIndex - startIndex + 1);
			int n = Integer.parseInt(str);
			return n;
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* BCD编码转成整型，字节顺序是倒的
			* @param b
			* @param startIndex
			* @param endIndex
			* @return 返回
			* @throws Exception 异常
			*/
			public static int BCD2Int_LE(byte[] b, int startIndex, int endIndex)throws Exception {
			String str = "";
			str = decodeBCD_LE(b, startIndex, endIndex - startIndex + 1);
			int n = Integer.parseInt(str);
			return n;
			}

			/**
			* 大端模式《数据低位在数组高字节》
			* BCD编码转成字符串型
			* @param b
			* @param startIndex
			* @param endIndex
			* @return 返回
			* @throws Exception 异常
			*/
			public static long BCD2Long_BE(byte[] b, int startIndex, int endIndex)throws Exception {
			String str = "";
			str = decodeBCD_BE(b, startIndex, endIndex - startIndex + 1);
			long n = Long.parseLong(str);
			return n;
			}


			/**
			* 小端模式《数据低位在数组低字节》
			* BCD编码转成字符串型，字节顺序是倒的
			* @param b
			* @param startIndex
			* @param endIndex
			* @return 返回
			* @throws Exception 异常
			*/
			public static long BCD2Long_LE(byte[] b, int startIndex, int endIndex)throws Exception {
			String str = "";
			str = decodeBCD_LE(b, startIndex, endIndex - startIndex + 1);
			return Long.parseLong(str);
			}

			/**
			* 大端模式《数据低位在数组高字节》
			* BCD编码转成字符串型
			* @param b
			* @param startIndex
			* @param endIndex
			* @return 返回
			* @throws Exception 异常
			*/
			public static String BCD2String_BE(byte[] b, int startIndex, int endIndex) throws Exception {
			return decodeBCD_BE(b, startIndex, endIndex - startIndex + 1);
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* BCD编码转成字符串型，字节顺序是倒的
			* @param b
			* @param startIndex
			* @param endIndex
			* @return 返回
			* @throws Exception 异常
			*/
			public static String BCD2String_LE(byte[] b, int startIndex, int endIndex) throws Exception {
			return decodeBCD_LE(b, startIndex, endIndex - startIndex + 1);
			}

			/**
			* 大端模式《数据低位在数组高字节》
			* 编码BCD，例如1387编码成 13 87，顺序是正的
			* @param value
			* @param dest
			* @param startIndex
			* @param length 长度
			*/
			private static void encodeBCD_BE(String value, byte[] dest, int startIndex, int length)throws Exception {
			if (value == null \|\| !value.matches("\\d*")) {
			throw new Exception("数字转成BCD编码时出错，不是合法数字:" + value, null);
			}

			int[] tmpInts = new int[2 * length];
			int index = value.length() - 1;
			for (int i = tmpInts.length - 1; i >= 0 && index >= 0; i--, index--) {
			tmpInts[i] = value.charAt(index) - '0';
			}
			for (int i = startIndex, j = 0; i < startIndex + length; i++, j++) {
			dest[i] = (byte) (tmpInts[2 * j] * 16 + tmpInts[2 * j + 1]);
			}
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* 编码BCD，例如1387编码成 87 13，顺序是倒的
			* @param value
			* @param dest
			* @param startIndex
			* @param length 长度
			*/
			private static void encodeBCD_LE(String value, byte[] dest, int startIndex, int length)throws Exception {
			if (value == null \|\| !value.matches("\\d*")) {
			throw new Exception("数字转成BCD编码时出错，不是合法数字:" + value, null);
			}

			int[] tmpInts = new int[2 * length];
			int index = value.length() - 1;
			for (int i = 0; i <= tmpInts.length - 1 && index >= 0; i++, index--) {
			tmpInts[i] = value.charAt(index) - '0';
			}
			for (int i = startIndex, j = 0; i < startIndex + length; i++, j++) {
			dest[i] = (byte) (tmpInts[2 * j + 1] * 16 + tmpInts[2 * j] );
			}
			}



			/**
			* 大端模式《数据低位在数组高字节》
			* 解码BCD，顺序是正的
			* @param src
			* @param startIndex
			* @param length 长度
			* @return 返回
			*/
			private static String decodeBCD_BE(byte[] src, int startIndex, int length)throws Exception {
			StringBuilder sb = new StringBuilder();
			for (int i = startIndex; i < startIndex + length ; i++) {
			int value = (src[i] + 256) % 256;
			sb.append((char) (value / 16 + '0')).append((char) (value % 16 + '0'));
			value++;
			}
			String result = sb.toString();
			if (!result.matches("\\d*")) {
			throw new Exception("解码BCD，但数据（" + result + "[startIndex=" + startIndex + ",length=" + length + "]）非BCD码！");
			}
			return result;
			}

			/**
			* 小端模式《数据低位在数组低字节》
			* 编码BCD，顺序是倒的
			* @param src
			* @param startIndex
			* @param length 长度
			* @return 返回
			*/
			private static String decodeBCD_LE(byte[] src, int startIndex, int length)throws Exception {
			StringBuilder sb = new StringBuilder();
			for (int i = (startIndex + length - 1); i >= startIndex; i--) {
			int value = (src[i] + 256) % 256;
			sb.append((char) (value / 16 + '0')).append((char) (value % 16 + '0'));
			}

			String result = sb.toString();
			if (!result.matches("\\d*")) {
			throw new Exception("解码BCD，但数据（" + result + "[startIndex=" + startIndex + ",length=" + length + "]）非BCD码！");
			}
			return result;
			}

			// public static void main(String[] args) throws Exception {
			// // 帧头 + 帧长度 + 终端ID + 功能码 + 数据
			// int len = 2 + 4 + 4 + 2 + (4 + 4);
			//
			// byte[] b = new byte[len];
			// ByteUtil.int2Bytes(b, 1234567890, 0);
			// int v1 = ByteUtil.bytes2Int(b, 0);
			// System.out.println(v1);
			//
			// b = new byte[len];
			// ByteUtil.short2Bytes(b, (short) -1234, 0);
			// short v2 = ByteUtil.bytes2Short(b, 0);
			// System.out.println(v2);
			//
			// b = new byte[len];
			// ByteUtil.long2Bytes(b, 4638387438405602509L, 0);
			// long v3 = ByteUtil.bytes2Long(b, 0);
			// System.out.println(v3);
			//
			// b = new byte[len];
			// ByteUtil.float2Bytes(b, (float) -123456.45, 0);
			// float v4 = ByteUtil.bytes2Float(b, 0);
			// System.out.println(v4);
			//
			// b = new byte[len];
			// ByteUtil.double2Bytes(b, -256.1234567890123D, 0);
			// double v5 = ByteUtil.bytes2Double(b, 0);
			// System.out.println(v5);
			//
			// }
			/*
			public static void main(String[] args) throws Exception {
			byte[] bs = new byte[]{0x38, 0x36, 0x39, 0x31} ;
			String s = bytes2String_BE(bs, 0, 3) ;
			System.out.println(s);

			byte[] bss = new byte[]{(byte)0x8F} ;
			int v = bss[0] ;
			System.out.println(v);
			if(v < 0){
			v = 255 + v + 1 ;
			}
			System.out.println(v);
			}
			*/

			}