字节流、字符串、16进制字符串转换__Java（转）

Java代码



/**

* @Package:

* @ClassName:TypeConversion

* @Description:字节流、字符串、16进制字符串转换

* @author:xk

* @date:Jan 8, 2013 5:00:08 PM

*/

public class TypeConversion {

/**

* @Title:bytes2HexString

* @Description:字节数组转16进制字符串

* @param b

* 字节数组

* @return 16进制字符串

* @throws

*/

public static String bytes2HexString(byte[] b) {

StringBuffer result = new StringBuffer();

String hex;

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

hex = Integer.toHexString(b[i] & 0xFF);

if (hex.length() == 1) {

hex = '0' + hex;

}

result.append(hex.toUpperCase());

}

return result.toString();

}

/**

* @Title:hexString2Bytes

* @Description:16进制字符串转字节数组

* @param src

* 16进制字符串

* @return 字节数组

* @throws

*/

public static byte[] hexString2Bytes(String src) {

int l = src.length() / 2;

byte[] ret = new byte[l];

for (int i = 0; i < l; i++) {

ret[i] = (byte) Integer

.valueOf(src.substring(i * 2, i * 2 + 2), 16).byteValue();

}

return ret;

}

/**

* @Title:string2HexString

* @Description:字符串转16进制字符串

* @param strPart

* 字符串

* @return 16进制字符串

* @throws

*/

public static String string2HexString(String strPart) {

StringBuffer hexString = new StringBuffer();

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

int ch = (int) strPart.charAt(i);

String strHex = Integer.toHexString(ch);

hexString.append(strHex);

}

return hexString.toString();

}

/**

* @Title:hexString2String

* @Description:16进制字符串转字符串

* @param src

* 16进制字符串

* @return 字节数组

* @throws

*/

public static String hexString2String(String src) {

String temp = "";

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

temp = temp

+ (char) Integer.valueOf(src.substring(i * 2, i * 2 + 2),

16).byteValue();

}

return temp;

}

/**

* @Title:char2Byte

* @Description:字符转成字节数据char-->integer-->byte

* @param src

* @return

* @throws

*/

public static Byte char2Byte(Character src) {

return Integer.valueOf((int)src).byteValue();

}

/**

* @Title:intToHexString

* @Description:10进制数字转成16进制

* @param a 转化数据

* @param len 占用字节数

* @return

* @throws

*/

private static String intToHexString(int a,int len){

len<<=1;

String hexString = Integer.toHexString(a);

int b = len -hexString.length();

if(b>0){

for(int i=0;i<b;i++) {

hexString = "0" + hexString;

}

}

return hexString;

}

public static void main(String args[]) {

System.out.println(hexString2String("3133383131313536373838"));

}

}

转自：http://hunray.iteye.com/blog/1849585