java中把位元組數組為16進位字串

標籤：字元   ges   字串   util   位元組   param   ati   import   res   

把字串數群組轉換為16進位字串

import java.security.MessageDigest;public class StringUtil {    public StringUtil() {        super();    }        public static String str;            public static final String EMPTY_STRING = "";            private final static String[] hexDigits = { "0", "1", "2", "3", "4", "5",                            "6", "7", "8", "9", "A", "B", "C", "D", "E", "F" };            private static String byteToHexString(byte b) {                    int n = b;                    if (n < 0)                            n = 256 + n;                    int d1 = n / 16;                    int d2 = n % 16;                    return hexDigits[d1] + hexDigits[d2];            }            /**             * 轉換位元組數組為16進位字串             * @param b 位元組數組             * @return 16進位字串             */            public static String byteArrayToHexString(byte[] b) {                    StringBuffer resultSb = new StringBuffer();                    for (int i = 0; i < b.length; i++) {                            resultSb.append(byteToHexString(b[i]));                    }                    return resultSb.toString();            }            public static String MD5Encode(String origin) {                    String resultString = null;                    try {                            resultString = new String(origin);                            MessageDigest md = MessageDigest.getInstance("MD5");                            resultString = byteArrayToHexString(md.digest(resultString                                            .getBytes()));                    } catch (Exception ex) {                    }                    return resultString;            }}

 

java中把位元組數組為16進位字串