Mina常用进制转换工具
Mina常用16进制，8进制，2进制的字符串之间的相互转换。
package com.boonya.mina.protocol.utils;
import com.boonya.utils.Log;
import java.io.UnsupportedEncodingException;
import java.text.DecimalFormat;
/**
* @Description: 进制转换工具类，常用为十六进制 二进制 八进制 字符串 byte及数组转换
*/
public class HexUtils {
@SuppressWarnings("unused")
private static final String PATTERN_LEN_TEN = "0000000000";// Len(2^32)=10
private static final DecimalFormat numberformater = new DecimalFormat();
/**
* hex to char
*
* @param arg0
* two number orgnized to hex string
* @return char
*/
public static char toChar(String arg0) {
return Character.toChars(Integer.parseInt(arg0, 16))[0];
}
/**
* hex string to int
*
* @param arg0
* @return
*/
public static int toInt(String arg0) {
return Integer.parseInt(arg0, 16);
}
/**
* hex string to binary string
*
* @param hexstr
* @param radix
* @return
*/
public static String toBinaryStr(String hexstr, int radix) {
String binstr = Integer.toBinaryString(Integer.parseInt(hexstr, 16));
StringBuffer b = new StringBuffer(binstr);
while (b.length() < radix) {
b.insert(0, '0');
}
return b.toString();
}
/**
* hex string to binary string, format to 32 char
*
* @param arg0
* @return
*/
public static String toBinaryStr32(String hexstr) {
int radix = 16;
String binstr = Long.toBinaryString(Long.parseLong(hexstr, radix));
;
StringBuffer b = new StringBuffer(binstr);
while (b.length() < radix) {
b.insert(0, '0');
}
return b.toString();
}
/**
* binary to String, 16 chars
*
* @return
*/
public static String toBinaryStr16(String hexstr) {
return toBinaryStr(hexstr, 16);
}
/**
* binary to String, 8 chars
*
* @return
*/
public static String toBinaryStr8(byte bin) {
String binstr = Integer.toBinaryString(bin);
StringBuffer b = new StringBuffer(binstr);
while (b.length() < 8) {
b.insert(0, '0');
}
return b.toString();
}
/**
* hex string to byte array
*
* @param hexString
* @return byte[]
*/
public static byte[] hexStringToByte(String hex) {
hex = hex.toUpperCase();// 大小写转换，引起重视
int len = (hex.length() / 2);
byte[] result = new byte[len];
char[] achar = hex.toCharArray();
for (int i = 0; i < len; i++) {
int pos = i * 2;
int ten = toByte(achar[pos]);
int one = toByte(achar[pos + 1]);
result[i] = (byte) (ten << 4 | one);
}
return result;
}
/**
* binary String to hex byte array
*
* @return
*/
public static byte[] binaryStrToHexByte(String val) {
int bi2 = Integer.parseInt(val, 2);
numberformater.applyPattern("00000000");
int res_16 = Integer.valueOf(Integer.toHexString(bi2));
String result = numberformater.format(res_16);
byte[] b = HexUtils.hexStringToByte(result);
return b;
}
private static int toByte(char c) {
byte b = (byte) "0123456789ABCDEF".indexOf(c);
return b;
}
/**
* String to hex String
*/
public static String str2HexStr(String str) {
char[] chars = "0123456789ABCDEF".toCharArray();
StringBuilder sb = new StringBuilder("");
byte[] bs = str.getBytes();
int bit;
for (int i = 0; i < bs.length; i++) {
bit = (bs[i] & 0x0f0) >> 4;
sb.append(chars[bit]);
bit = bs[i] & 0x0f;
sb.append(chars[bit]);
}
return sb.toString();
}
/**
* byte array to hex string
*
* @param byte[]
* @return HexString
*/
public static final String bytesToHexString(byte[] bArray) {
StringBuffer sb = new StringBuffer(bArray.length);
String sTemp;
for (int i = 0; i < bArray.length; i++) {
sTemp = Integer.toHexString(0xFF & bArray[i]);
if (sTemp.length() < 2)
sb.append(0);
sb.append(sTemp.toUpperCase());
}
return sb.toString();
}
/**
* bytes to int4
*
* @param b
* @return
*/
public static int bytesToInt4(byte[] b) {
int mask = 0xff;
int temp = 0;
int n = 0;
for (int i = 0; i < 4; i++) {
n <<= 8;
temp = b[i] & mask;
n |= temp;
}
return n;
}
/**
* string to hex string
*
* @return
*/
public String stringToHexString(String string) {
return HexUtils.bytesToHexString(string.getBytes());
}
/**
* int to byte[], length=1
*
* @param i
* @return
*/
public static final byte[] intToSimpleByteArray(int intValue) {
byte[] result = null;
if (intValue <= 255) {
result = new byte[1];
result[0] = (byte) (intValue & 0xFF);
}
return result;
}
/**
* int 转 byte数组， 2个字节或者4个字节 int to byte[], length=2,4
*
* @param i
* @return
*/
public static final byte[] intToByteArray(int intValue) {
byte[] result = null;
if (intValue <= 65535) {
result = new byte[2];
result[0] = (byte) ((intValue & 0xFF00) >> 8);
result[1] = (byte) (intValue & 0x00FF);
} else if (intValue > 65535 && intValue <= Integer.MAX_VALUE) {
result = new byte[4];
result[0] = (byte) ((intValue & 0xFF000000) >> 24);
result[1] = (byte) ((intValue & 0x00FF0000) >> 16);
result[2] = (byte) ((intValue & 0x0000FF00) >> 8);
result[3] = (byte) ((intValue & 0x000000FF));
}
return result;
}
/**
* int 转 byte数组， 4个字节
*
* @param intValue
* @return
*/
public static final byte[] intToByte4Array(int intValue) {
byte[] result = null;
if (intValue <= 65535) {
result = new byte[4];
result[0] = 0x00;
result[1] = 0x00;
result[2] = (byte) ((intValue & 0xFF00) >> 8);
result[3] = (byte) (intValue & 0x00FF);
} else if (intValue > 65535 && intValue <= Integer.MAX_VALUE) {
result = new byte[4];
result[0] = (byte) ((intValue & 0xFF000000) >> 24);
result[1] = (byte) ((intValue & 0x00FF0000) >> 16);
result[2] = (byte) ((intValue & 0x0000FF00) >> 8);
result[3] = (byte) ((intValue & 0x000000FF));
}
return result;
}
/**
* int转byte数组，3个字节 int to byte[], length=3
*
* @param i
* @return
*/
public static final byte[] intToThreeByteArray(int intValue) {
byte[] result = null;
if (intValue > 65535 && intValue <= 16777215) {
result = new byte[3];
result[0] = (byte) ((intValue & 0xFF0000) >> 16);
result[1] = (byte) ((intValue & 0x00FF00) >> 8);
result[2] = (byte) ((intValue & 0x0000FF));
}
return result;
}
/**
* int 转数组，有符号，单字节 int to byte[], contain sign
*
* @param signIntVal
* @return
*/
public static final byte[] intToSignByteArray(int signIntVal) {
byte[] b = HexUtils.intToByteArray(Math.abs(signIntVal));
if (signIntVal < 0) {
b[0] = (byte) 0x80;
}
return b;
}
/**
* encode to gbk
*
* @param b
* @return
*/
public static final byte[] encodeGBK(String s) {
try {
return s.getBytes("GBK");
} catch (UnsupportedEncodingException e) {
Log.getLogger(HexUtils.class).error(e.getMessage(), e);
}
return new byte[0];
}
/**
* encode to utf-16 little endian
*
* @param b
* @return
*/
public static final byte[] encodeUTF16LE(String s) {
try {
return s.getBytes("UTF-16LE");
} catch (UnsupportedEncodingException e) {
Log.getLogger(HexUtils.class).error(e.getMessage(), e);
}
return new byte[0];
}
/**
* encode to utf-16 big endian
*
* @param b
* @return
*/
public static final byte[] encodeUTF16BE(String s) {
try {
return s.getBytes("UTF-16BE");
} catch (UnsupportedEncodingException e) {
Log.getLogger(HexUtils.class).error(e.getMessage(), e);
}
return new byte[0];
}
/**
* byte[] decode to gbk
*
* @param b
* @return
*/
public static final String decodeGBK(byte[] b) {
try {
return new String(b, "GBK");
} catch (UnsupportedEncodingException e) {
Log.getLogger(HexUtils.class).error(e.getMessage(), e);
}
return "";
}
/**
* byte[] decode to utf16 little endian
*
* @param b
* @return
*/
public static final String decodeUTF16LE(byte[] b) {
try {
return new String(b, "UTF-16LE");
} catch (UnsupportedEncodingException e) {
Log.getLogger(HexUtils.class).error(e.getMessage(), e);
}
return "";
}
/**
* byte[] decode to utf 16 big endian
*
* @param b
* @return
*/
public static final String decodeUTF16BE(byte[] b) {
try {
return new String(b, "UTF-16BE");
} catch (UnsupportedEncodingException e) {
Log.getLogger(HexUtils.class).error(e.getMessage(), e);
}
return "";
}
/**
* 源自JDK1.6的方法，从一个byte[]数组中复制byte
*
* @since 1.6
*/
public static byte[] copyOfRange(byte[] original, int from, int to) {
int newLength = to - from;
if (newLength < 0)
throw new IllegalArgumentException(from + " > " + to);
byte[] copy = new byte[newLength];
System.arraycopy(original, from, copy, 0, Math.min(original.length
- from, newLength));
return copy;
}
/**
* short to byte[]
*
* @param n
* @return
*/
public static byte[] shortToBytes(short n) {
byte[] b = new byte[2];
b[1] = (byte) (n & 0xff);
b[0] = (byte) ((n >> 8) & 0xff);
return b;
}
/**
* encode to utf-16 little endian
*
* @param b
* @return
*/
public static final byte[] encodeUTF16LE(String s) {
try {
return s.getBytes("UTF-16LE");
} catch (UnsupportedEncodingException e) {
Log.getLogger(HexUtils.class).error(e.getMessage(), e);
}
return new byte[0];
}
/**
* encode to utf-16 big endian
*
* @param b
* @return
*/
public static final byte[] encodeUTF16BE(String s) {
try {
return s.getBytes("UTF-16BE");
} catch (UnsupportedEncodingException e) {
Log.getLogger(HexUtils.class).error(e.getMessage(), e);
}
return new byte[0];
}
/**
* byte[] decode to gbk
*
* @param b
* @return
*/
public static final String decodeGBK(byte[] b) {
try {
return new String(b, "GBK");
} catch (UnsupportedEncodingException e) {
Log.getLogger(HexUtils.class).error(e.getMessage(), e);
}
return "";
}
/**
* byte[] decode to utf16 little endian
*
* @param b
* @return
*/
public static final String decodeUTF16LE(byte[] b) {
try {
return new String(b, "UTF-16LE");
} catch (UnsupportedEncodingException e) {
Log.getLogger(HexUtils.class).error(e.getMessage(), e);
}
return "";
}
/**
* byte[] decode to utf 16 big endian
*
* @param b
* @return
*/
public static final String decodeUTF16BE(byte[] b) {
try {
return new String(b, "UTF-16BE");
} catch (UnsupportedEncodingException e) {
Log.getLogger(HexUtils.class).error(e.getMessage(), e);
}
return "";
}
/**
* 源自JDK1.6的方法，从一个byte[]数组中复制byte
*
* @since 1.6
*/
public static byte[] copyOfRange(byte[] original, int from, int to) {
int newLength = to - from;
if (newLength < 0)
throw new IllegalArgumentException(from + " > " + to);
byte[] copy = new byte[newLength];
System.arraycopy(original, from, copy, 0, Math.min(original.length
- from, newLength));
return copy;
}
/**
* short to byte[]
*
* @param n
* @return
*/
public static byte[] shortToBytes(short n) {
byte[] b = new byte[2];
b[1] = (byte) (n & 0xff);
b[0] = (byte) ((n >> 8) & 0xff);
return b;
}
}