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// ÕûÊýµ½×Ö½ÚÊý×éת»»
public static byte[] int2bytes(int n) {
byte[] ab = new byte[4];
ab[0] = (byte) (0xff & n);
ab[1] = (byte) ((0xff00 & n) >> 8);
ab[2] = (byte) ((0xff0000 & n) >> 16);
ab[3] = (byte) ((0xff000000 & n) >> 24);
return ab;
}
// ×Ö½ÚÊý×éµ½ÕûÊýµÄת»»
public static int bytes2int(byte b[]) {
int s = 0;
s = ((((b[0] & 0xff) << 8 | (b[1] & 0xff)) << 8) | (b[2] & 0xff)) << 8
| (b[3] & 0xff);
return s;
}
// ×Ö½Úת»»µ½×Ö·û
public static char byte2char(byte b) {
return (char) b;
}
private final static byte[] hex = "0123456789ABCDEF".getBytes();
private static int parse(char c) {
if (c >= 'a')
return (c - 'a' + 10) & 0x0f;
if (c >= 'A')
return (c - 'A' + 10) & 0x0f;
return (c - '0') & 0x0f;
}
// ´Ó×Ö½ÚÊý×鵽ʮÁù½øÖÆ×Ö·û´®×ª»»
public static String Bytes2HexString(byte[] b) {
byte[] buff = new byte[2 * b.length];
for (int i = 0; i < b.length; i++) {
buff[2 * i] = hex[(b[i] >> 4) & 0x0f];
buff[2 * i + 1] = hex[b[i] & 0x0f];
}
return new String(buff);
}
// ´ÓÊ®Áù½øÖÆ×Ö·û´®µ½×Ö½ÚÊý×éת»»
public static byte[] HexString2Bytes(String hexstr) {
byte[] b = new byte[hexstr.length() / 2];
int j = 0;
for (int i = 0; i < b.length; i++) {
char c0 = hexstr.charAt(j++);
char c1 = hexstr.charAt(j++);
b[i] = (byte) ((parse(c0) << 4) | parse(c1));
}
return b;
}
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{
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