Java对二进制与字符串转换
发布时间：2010/10/13 10:54:49 来源：城市学习网 编辑：ziteng
先记录下，以后要用，直接取
Java代码
package test;
import java.util.StringTokenizer;
public class StrToByte {
public static String byte2hex(byte[] b) // 二进制转字符串
{
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)));
}
}
