之前在JT/T 808在android上实现时用到了不少类型转换的Helper，现将其公布出来，有需要的朋友拿去用吧。
1.常用类型和byte[]互转的ByteHelper；
2.BCD码压缩的BCDHelper；
3.CRC、XOR的CheckHelper 。
import java.io.UnsupportedEncodingException;
public class ByteHelper {
/**
* @Title: UInt16ToByte2
* @Description: TODO(将UInt16转化为byte2)
*
* @param Val
* @return
* @return:byte[]
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-17
*
* Modification History:
* Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-17 wanjj v1.0.0 修改原因
*/
public static byte[] UInt16ToByte2(Integer Val) {
byte[] bts = new byte[2];
bts[0] = (byte) ((0xff00 & Val) >> 8);
bts[1] = (byte) (0xff & Val);
return bts;
}
/**
* @Title: UInt16ToByte2
* @Description: TODO(将UInt16转化为byte2)
*
* @param i
* @param bts
* @param offset
* @return:void
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-17
*
* Modification History:
* Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-17 wanjj v1.0.0 修改原因
*/
public static void UInt16ToByte2(Integer i, byte[] bts, int offset) {
byte[] btsTemp = UInt16ToByte2(i);
int index = 0;
while (index < 2) {
bts[index + offset] = btsTemp[index];
index += 1;
}
}
/**
* @Title: Int16ToByte2
* @Description: TODO(将Int16转化为byte2)
*
* @param Val
* @return
* @return:byte[]
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-17
*
* Modification History:
* Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-17 wanjj v1.0.0 修改原因
*/
public static byte[] Int16ToByte2(Short Val) {
byte[] bts = new byte[2];
bts[0] = (byte) ((Val >> 8) & 0xff);
bts[1] = (byte) (Val & 0xff);
return bts;
}
/**
* @Title: Int16ToByte2
* @Description: TODO(将Int16转化为byte2)
*
* @param i
* @param bts
* @param offset
* @return:void
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-17
*
* Modification History:
* Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-17 wanjj v1.0.0 修改原因
*/
public static void Int16ToByte2(Short i, byte[] bts, int offset) {
byte[] btsTemp = Int16ToByte2(i);
int index = 0;
while (index < 2) {
bts[index + offset] = btsTemp[index];
index += 1;
}
}
/**
* @Title: UIntToByte4
* @Description: TODO(将Uint32转化为byte4)
*
* @param Val
* @return
* @return:byte[]
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-17
*
* Modification History:
* Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-17 wanjj v1.0.0 修改原因
*/
public static byte[] UIntToByte4(Long Val) {
byte[] bts = new byte[4];
bts[0] = (byte) ((0xff000000L & Val) >> 24);
bts[1] = (byte) ((0xff0000 & Val) >> 16);
bts[2] = (byte) ((0xff00 & Val) >> 8);
bts[3] = (byte) (0xff & Val);
return bts;
}
/**
* @Title: UIntToByte4
* @Description: TODO(将Uint32转化为byte4)
*
* @param i
* @param bts
* @param offset
* @return:void
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-17
*
* Modification History:
* Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-17 wanjj v1.0.0 修改原因
*/
public static void UIntToByte4(Long i, byte[] bts, int offset) {
byte[] btsTemp = UIntToByte4(i);
int index = 0;
while (index < 4) {
bts[index + offset] = btsTemp[index];
index += 1;
}
}
/**
* @Title: IntToByte4
* @Description: TODO(将int32转化为byte4)
*
* @param Val
* @return
* @return:byte[]
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-17
*
* Modification History:
* Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-17 wanjj v1.0.0 修改原因
*/
public static byte[] IntToByte4(Integer Val) {
byte[] bts = new byte[4];
bts[0] = (byte) ((0xff000000 & Val) >> 24);
bts[1] = (byte) ((0xff0000 & Val) >> 16);
bts[2] = (byte) ((0xff00 & Val) >> 8);
bts[3] = (byte) (0xff & Val);
return bts;
}
/**
* @Title: IntToByte4
* @Description: TODO(将int32转化为byte4)
*
* @param i
* @param bts
* @param offset
* @return:void
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-17
*
* Modification History:
* Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-17 wanjj v1.0.0 修改原因
*/
public static void IntToByte4(Integer i, byte[] bts, int offset) {
byte[] btsTemp = IntToByte4(i);
int index = 0;
while (index < 4) {
bts[index + offset] = btsTemp[index];
index += 1;
}
}
/**
* @Title: FloatToByte4
* @Description: TODO(Float转byte4)
*
* @param val
* @return
* @return:byte[]
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-17
*
* Modification History:
* Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-17 wanjj v1.0.0 修改原因
*/
public static byte[] FloatToByte4(float val) {
return IntToByte4(Float.floatToIntBits(val));
}
/**
* @Title: FloatToByte4
* @Description: TODO(Float转byte4)
*
* @param val
* @param bts
* @param offset
* @return:void
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-17
*
* Modification History:
* Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-17 wanjj v1.0.0 修改原因
*/
public static void FloatToByte4(float val, byte[] bts, int offset) {
byte[] btsTemp = FloatToByte4(val);
int index = 0;
while (index < 4) {
bts[index + offset] = btsTemp[index];
index += 1;
}
}
/**
* @Title: Byte2ToInt16
* @Description: TODO(Byte2转int16)
*
* @param bt1
* @param bt2
* @return
* @return:short
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-8
*
* Modification History: Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-8 wanjj v1.0.0 修改原因
*/
public static short Byte2ToInt16(byte bt1, byte bt2) {
return (short) ((bt1 & 0xff) << 8 | bt2 & 0xff);
}
/**
* @Title: Byte2ToInt16
* @Description: TODO(Byte2转int16)
*
* @param bts
* @param offset
* @return
* @return:short
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-8
*
* Modification History: Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-8 wanjj v1.0.0 修改原因
*/
public static short Byte2ToInt16(byte[] bts, int offset) {
return Byte2ToInt16(bts[offset], bts[offset + 1]);
}
/**
* @Title: Byte2ToUInt16
* @Description: TODO(Byte2转uint16)
*
* @param bt1
* @param bt2
* @return
* @return:Integer
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-8
*
* Modification History: Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-8 wanjj v1.0.0 修改原因
*/
public static Integer Byte2ToUInt16(byte bt1, byte bt2) {
return (int) ((bt1 & 0xff) << 8 | bt2 & 0xff);
}
/**
* @Title: Byte2ToUInt16
* @Description: TODO( Byte2转uint16)
*
* @param bts
* @param offset
* @return
* @return:Integer
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-8
*
* Modification History: Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-8 wanjj v1.0.0 修改原因
*/
public static Integer Byte2ToUInt16(byte[] bts, int offset) {
return Byte2ToUInt16(bts[offset], bts[offset + 1]);
}
/**
* @Title: Byte4ToInt32
* @Description: TODO(Byte4转int32)
*
* @param bt1
* @param bt2
* @param bt3
* @param bt4
* @return
* @return:Integer
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-8
*
* Modification History: Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-8 wanjj v1.0.0 修改原因
*/
public static Integer Byte4ToInt32(byte bt1, byte bt2, byte bt3, byte bt4) {
return (bt1 & 0xff) << 24 | (bt2 & 0xff) << 16 | (bt3 & 0xff) << 8
| bt4 & 0xff;
}
/**
* @Title: Byte4ToInt32
* @Description: TODO(Byte4转int32)
*
* @param bts
* @param offset
* @return
* @return:Integer
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-8
*
* Modification History: Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-8 wanjj v1.0.0 修改原因
*/
public static Integer Byte4ToInt32(byte[] bts, int offset) {
return Byte4ToInt32(bts[offset], bts[offset + 1], bts[offset + 2],
bts[offset + 3]);
}
/**
* @Title: Byte4ToUInt32
* @Description: TODO(Byte4转uint32)
*
* @param bt1
* @param bt2
* @param bt3
* @param bt4
* @return
* @return:long
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-8
*
* Modification History: Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-8 wanjj v1.0.0 修改原因
*/
public static long Byte4ToUInt32(byte bt1, byte bt2, byte bt3, byte bt4) {
return (long) Byte4ToInt32(bt1, bt2, bt3, bt4);
}
/**
* @Title: Byte4ToUInt32
* @Description: TODO(Byte4转uint32)
*
* @param bts
* @param offset
* @return
* @return:long
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-8
*
* Modification History: Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-8 wanjj v1.0.0 修改原因
*/
public static long Byte4ToUInt32(byte[] bts, int offset) {
return Byte4ToUInt32(bts[offset], bts[offset + 1], bts[offset + 2],
bts[offset + 3]);
}
/**
* @Title: Byte4ToFloat
* @Description: TODO(Byte4转Float)
*
* @param bt1
* @param bt2
* @param bt3
* @param bt4
* @return
* @return:float
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-8
*
* Modification History: Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-8 wanjj v1.0.0 修改原因
*/
public static float Byte4ToFloat(byte bt1, byte bt2, byte bt3, byte bt4) {
return Float.intBitsToFloat(Byte4ToInt32(bt1, bt2, bt3, bt4));
}
/**
* @Title: Byte4ToFloat
* @Description: TODO(Byte4转Float)
*
* @param bts
* @param offset
* @return
* @return:float
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-8
*
* Modification History: Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-8 wanjj v1.0.0 修改原因
*/
public static float Byte4ToFloat(byte[] bts, int offset) {
return Byte4ToFloat(bts[offset], bts[offset + 1], bts[offset + 2],
bts[offset + 3]);
}
/**
* @Title: StringToGBK
* @Description: TODO(字符串转GBK编码)
*
* @param str
* @return
* @throws UnsupportedEncodingException
* @return:byte[]
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-8
*
* Modification History: Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-8 wanjj v1.0.0 修改原因
*/
public static byte[] StringToGBK(String str)
throws UnsupportedEncodingException {
return str.getBytes("GBK");
}
/**
* @Title: FillSGBK
* @Description: TODO(填充GBK编码)
*
* @param str
* @param bts
* @param offset
* @return
* @throws UnsupportedEncodingException
* @return:int
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-8
*
* Modification History: Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-8 wanjj v1.0.0 修改原因
*/
public static int FillSGBK(String str, byte[] bts, int offset)
throws UnsupportedEncodingException {
return FillSGBK(str, bts, offset, 0);
}
/**
* @Title: FillSGBK
* @Description: TODO(填充GBK编码)
*
* @param str
* @param bts
* @param offset
* @param length
* @return
* @throws UnsupportedEncodingException
* @return:int
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-8
*
* Modification History: Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-8 wanjj v1.0.0 修改原因
*/
public static int FillSGBK(String str, byte[] bts, int offset, int length)
throws UnsupportedEncodingException {
int len = 0;
if (str != null) {
byte[] tmp = StringToGBK(str);
// 填充数据
for (int i = 0; i < tmp.length; i++) {
bts[offset + i] = tmp[i];
}
len = tmp.length;
}
// 补0
for (int i = len; i < length; i++) {
bts[offset + i] = 0;
}
return len > length ? len : length;
}
/**
* @Title: GBKToString
* @Description: TODO(GBK编码转字符串)
*
* @param bts
* @return
* @throws UnsupportedEncodingException
* @return:String
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-8
*
* Modification History: Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-8 wanjj v1.0.0 修改原因
*/
public static String GBKToString(byte[] bts)
throws UnsupportedEncodingException {
return GBKToString(bts, 0);
}
/**
* @Title: GBKToString
* @Description: TODO(GBK编码转字符串)
*
* @param bts
* @param offset
* @return
* @throws UnsupportedEncodingException
* @return:String
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-8
*
* Modification History: Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-8 wanjj v1.0.0 修改原因
*/
public static String GBKToString(byte[] bts, int offset)
throws UnsupportedEncodingException {
return SGBKToString(bts, offset, bts.length - offset);
}
/**
* @Title: SGBKToString
* @Description: TODO(GBK编码转字符串(定长字符串))
*
* @param bts
* @param offset
* @param count
* @return
* @throws UnsupportedEncodingException
* @return:String
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-8
*
* Modification History: Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-8 wanjj v1.0.0 修改原因
*/
public static String SGBKToString(byte[] bts, int offset, int count)
throws UnsupportedEncodingException {
return new String(bts, offset, count, "GBK");
}
/**
* @Title: HexStringToBytes
* @Description: TODO(HEX字符串转BYTE数组)
*
* @param hex
* @return
* @return:byte[]
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-8
*
* Modification History: Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-8 wanjj v1.0.0 修改原因
*/
public static byte[] HexStringToBytes(String hex) {
byte[] bts = new byte[hex.length() / 2];
for (int i = 0; i < bts.length; i++) {
bts[i] = (byte) Integer.parseInt(hex.substring(2 * i, 2 * i + 2),
16);
}
return bts;
}
/**
* @Title: BytesToHexString
* @Description: TODO(BYTE数组转HEX字符串)
*
* @param bts
* @return
* @return:String
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-8
*
* Modification History: Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-8 wanjj v1.0.0 修改原因
*/
public static String BytesToHexString(byte[] bts) {
return BytesToHexString(bts, 0, bts.length);
}
/**
* @Title: BytesToHexString
* @Description: TODO(BYTE数组转HEX字符串)
*
* @param bts
* @param offset
* @param count
* @return
* @return:String
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-8
*
* Modification History: Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-8 wanjj v1.0.0 修改原因
*/
public static String BytesToHexString(byte[] bts, int offset, int count) {
StringBuilder sb = new StringBuilder(bts.length * 2);
for (int i = 0; i < count; i++) {
sb.append(Integer.toHexString(bts[i + offset]));
}
return sb.toString();
}
public static int BoolToByte(boolean bl) {
return bl ? 1 : 0 << 0;
}
}
import java.io.UnsupportedEncodingException;
import android.text.format.Time;
public class BCDHelper {
/**
* @Title: StrToBCD
* @Description: TODO(用BCD码压缩数字字符串)
*
* @param str
* @return
* @return:byte[]
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-17
*
* Modification History:
* Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-17 wanjj v1.0.0 修改原因
*/
public static byte[] StrToBCD(String str) {
return StrToBCD(str, str.length());
}
public static byte[] StrToBCD(String str, int numlen) {
if (numlen % 2 != 0)
numlen++;
while (str.length() < numlen) {
str = "0" + str;
}
byte[] bStr = new byte[str.length() / 2];
char[] cs = str.toCharArray();
int i = 0;
int iNum = 0;
for (i = 0; i < cs.length; i += 2) {
int iTemp = 0;
if (cs[i] >= '0' && cs[i] <= '9') {
iTemp = (cs[i] - '0') << 4;
} else {
// 判断是否为a~f
if (cs[i] >= 'a' && cs[i] <= 'f') {
cs[i] -= 32;
}
iTemp = (cs[i] - '0' - 7) << 4;
}
// 处理低位
if (cs[i + 1] >= '0' && cs[i + 1] <= '9') {
iTemp += cs[i + 1] - '0';
} else {
// 判断是否为a~f
if (cs[i + 1] >= 'a' && cs[i + 1] <= 'f') {
cs[i + 1] -= 32;
}
iTemp += cs[i + 1] - '0' - 7;
}
bStr[iNum] = (byte) iTemp;
iNum++;
}
return bStr;
}
/**
* @Title: bcdToInt
* @Description: TODO(BCD转int)
*
* @param bcdNum
* @param offset
* @param numlen
* @return
* @return:int
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-17
*
* Modification History:
* Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-17 wanjj v1.0.0 修改原因
*/
public static int bcdToInt(byte[] bcdNum, int offset, int numlen) {
return Integer.parseInt(bcdToString(bcdNum, offset, numlen));
}
/**
* @Title: bcdToString
* @Description: TODO(BCD转字符串)
*
* @param bcdNum
* @param offset
* @param numlen
* @return
* @return:String
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-17
*
* Modification History:
* Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-17 wanjj v1.0.0 修改原因
*/
public static String bcdToString(byte[] bcdNum, int offset, int numlen) {
int len = numlen / 2;
if (numlen % 2 != 0)
len++;
StringBuffer sb = new StringBuffer();
for (int i = 0; i < len; i++) {
sb.append(Integer.toHexString((bcdNum[i + offset] & 0xf0) >> 4));
sb.append(Integer.toHexString(bcdNum[i + offset] & 0xf));
}
return sb.toString();
}
/**
* @Title: Bcd3ToDateTime
* @Description: TODO(BCD码转日期)
*
* @param data
* @param offset
* @return
* @return:Time
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-17
*
* Modification History:
* Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-17 wanjj v1.0.0 修改原因
*/
public static Time Bcd3ToDateTime(byte[] data, int offset) {
int year = 0, month = 0, monthDay = 0;
year = Integer.parseInt("20" + bcdToString(data, offset, 2));
month = bcdToInt(data, offset + 1, 2);
monthDay = bcdToInt(data, offset + 2, 2);
Time time = new Time("GMT+8");
time.set(monthDay, month, year);
return time;
}
public static Time Bcd5ToDateTime(byte[] data, int offset) {
int year = 0, month = 0, monthDay = 0, hour = 0, minute = 0, second = 0;
year = Integer.parseInt("20" + bcdToString(data, offset, 2));
month = bcdToInt(data, offset + 1, 2);
monthDay = bcdToInt(data, offset + 2, 2);
hour = bcdToInt(data, offset + 3, 2);
minute = bcdToInt(data, offset + 4, 2);
Time time = new Time("GMT+8");
time.set(second, minute, hour, monthDay, month, year);
return time;
}
/**
* @Title: Bcd6ToDateTime
* @Description: TODO(BCD码转时间格式)
*
* @param data
* @param offset
* @return
* @return:Time
*
* @version: v1.0.0
* @author: WANJJ
* @date: 2011-11-17
*
* Modification History:
* Date Author Version Description
* ---------------------------------------------------------*
* 2011-11-17 wanjj v1.0.0 修改原因
*/