Java 二进制与字符串转换

public class StrToByte {

public static String byte2hex(byte[] b) // 二进制转字符串ASCII码
{

String hs = "";

String stmp = "";

for (int n = 0; n < b.length; n++) {

stmp = (java.lang.Integer.toHexString(b[n] & 0XFF));

if (stmp.length() == 1)

hs = hs + "0" + stmp;

else

hs = hs + stmp;

}

return hs;

}

public static byte[] hex2byte(String str) { // 字符串转二进制

if (str == null)

return null;

str = str.trim();

int len = str.length();

if (len == 0 || len % 2 == 1)

return null;

byte[] b = new byte[len / 2];

try {

for (int i = 0; i < str.length(); i += 2) {

b[i / 2] = (byte) Integer

.decode("0x" + str.substring(i, i + 2)).intValue();

}

return b;

} catch (Exception e) {

return null;

}

}

public static void main(String[] args) {

String str = "absadfawegsdcd";

String result = "";

result = byte2hex(str.getBytes());

System.out.println(result);

System.out.println(new String(hex2byte(result)));

}

}