| 提交 | 用户 | age | ||
| 5c5945 | 1 | package com.hx.util; |
| E | 2 | |
| 3 | import java.security.MessageDigest; | |
| 4 | ||
| 5 | public class MD5Util { | |
| 6 | ||
| 7 | private static String byteArrayToHexString(byte b[]) { | |
| 8 | StringBuffer resultSb = new StringBuffer(); | |
| 9 | for (int i = 0; i < b.length; i++) | |
| 10 | resultSb.append(byteToHexString(b[i])); | |
| 11 | ||
| 12 | return resultSb.toString(); | |
| 13 | } | |
| 14 | ||
| 15 | private static String byteToHexString(byte b) { | |
| 16 | int n = b; | |
| 17 | if (n < 0) | |
| 18 | n += 256; | |
| 19 | int d1 = n / 16; | |
| 20 | int d2 = n % 16; | |
| 21 | return hexDigits[d1] + hexDigits[d2]; | |
| 22 | } | |
| 23 | ||
| 24 | /** | |
| 25 | * @param origin 加密信息 | |
| 26 | * @param charsetname 加密信息的字符串名称（可以为空） | |
| 27 | * @return | |
| 28 | */ | |
| 29 | public static String MD5Encode(String origin, String charsetname) { | |
| 30 | String resultString = null; | |
| 31 | try { | |
| 32 | resultString = new String(origin); | |
| 33 | MessageDigest md = MessageDigest.getInstance("MD5"); | |
| 34 | if (charsetname == null || "".equals(charsetname)) | |
| 35 | resultString = byteArrayToHexString(md.digest(resultString | |
| 36 | .getBytes())); | |
| 37 | else | |
| 38 | resultString = byteArrayToHexString(md.digest(resultString | |
| 39 | .getBytes(charsetname))); | |
| 40 | } catch (Exception exception) { | |
| 41 | } | |
| 42 | return resultString; | |
| 43 | } | |
| 44 | ||
| 45 | private static final String hexDigits[] = { "0", "1", "2", "3", "4", "5", | |
| 46 | "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" }; | |
| 47 | ||
| 48 | } | |
