Tools.java
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package cn.pda.serialport;
import java.text.SimpleDateFormat;
public class Tools {
//byte 转十六进制
public static String Bytes2HexString(byte[] b, int size) {
String ret = "";
for (int i = 0; i < size; i++) {
String hex = Integer.toHexString(b[i] & 0xFF);
if (hex.length() == 1) {
hex = "0" + hex;
}
ret += hex.toUpperCase();
}
return ret;
}
public static byte uniteBytes(byte src0, byte src1) {
byte _b0 = Byte.decode("0x" + new String(new byte[]{src0})).byteValue();
_b0 = (byte)(_b0 << 4);
byte _b1 = Byte.decode("0x" + new String(new byte[]{src1})).byteValue();
byte ret = (byte)(_b0 ^ _b1);
return ret;
}
//十六进制转byte
public static byte[] HexString2Bytes(String src) {
int len = src.length() / 2;
byte[] ret = new byte[len];
byte[] tmp = src.getBytes();
for (int i = 0; i < len; i++) {
ret[i] = uniteBytes(tmp[i * 2], tmp[i * 2 + 1]);
}
return ret;
}
/* byte[]转Int */
public static int bytesToInt(byte[] bytes)
{
int addr = bytes[0] & 0xFF;
addr |= ((bytes[1] << 8) & 0xFF00);
addr |= ((bytes[2] << 16) & 0xFF0000);
addr |= ((bytes[3] << 25) & 0xFF000000);
return addr;
}
/* Int转byte[] */
public static byte[] intToByte(int i)
{
byte[] abyte0 = new byte[4];
abyte0[0] = (byte) (0xff & i);
abyte0[1] = (byte) ((0xff00 & i) >> 8);
abyte0[2] = (byte) ((0xff0000 & i) >> 16);
abyte0[3] = (byte) ((0xff000000 & i) >> 24);
return abyte0;
}
public static String getmyTime() {
SimpleDateFormat sDateFormat = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
String date = sDateFormat.format(new java.util.Date());
return date;
}
}