public class ByteConvert {
public static byte[] stringToByte(String inputString) {
int strLen = inputString.length();
char[] charResult = new char[strLen];
byte[] byteResult = new byte[strLen];
for (int i = 0; i < strLen; i++) {
charResult[i] = inputString.charAt(i);
byteResult[i] = (byte) charResult[i];
}
return byteResult;
}
/**
* 将int型转为byte[]，高位byte存储高位
* @param int inputNum
* @return byte[]
*/
public static byte[] intToByte(int inputNum) {
int count = 0;
if (inputNum < (Math.pow(2, 8)))
count = 1;
else if (inputNum < (Math.pow(2, 16)))
count = 2;
else if (inputNum < (Math.pow(2, 24)))
count = 3;
else if (inputNum < (Math.pow(2, 32)))
count = 4;
byte[] byteResult = new byte[count];
for (int i = 0; i < count; i++) {
byteResult[i] = (byte) ((inputNum >> (8 * i)) & 0xff);
}
return byteResult;
}