/**
*16进制字符串转为字节数组
*/
public byte[] hexToByte(String hex){
/**
*先去掉16进制字符串的空格
*/
hex = hex.replace(" ","");
/**
*字节数组长度为16进制字符串长度的一半
*/
int byteLength = hex.length()/2;
byte[] bytes = new byte[byteLength];
int m = 0;
int n = 0;
for(int i = 0; i<byteLength;i++){
m = i*2+1;
n = m+1;
int intHex = Integer.decode("0x"+hex.substring(i * 2, m) + hex.substring(m, n));
bytes[i] = Byte.valueOf((byte) intVal);
}
return bytes;
}
/**
*字节数组转为16进制字符串
*/
public static String byteToHex(byte[] bytes) {
String strHex = "";
StringBuilder stringBuilder = new StringBuilder();
for (int n = 0; n < bytes.length; n++) {
strHex = Integer.toHexString(bytes[n] & 0xFF);
stringBuilder.append((strHex.length() == 1) ? "0" + strHex : strHex);
}
return stringBuilder.toString().trim();
}
/**
*字符串转为16进制字符串
*/
public 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().trim();
}