| 提交 | 用户 | 时间 | ||
| e57a89 | 1 | package com.jcdm.common.utils.sign; |
| 懒 | 2 | |
| 3 | import java.nio.charset.StandardCharsets; | |
| 4 | import java.security.MessageDigest; | |
| 5 | import org.slf4j.Logger; | |
| 6 | import org.slf4j.LoggerFactory; | |
| 7 | ||
| 8 | /** | |
| 9 | * Md5加密方法 | |
| 10 | * | |
| 11 | * @author jc | |
| 12 | */ | |
| 13 | public class Md5Utils | |
| 14 | { | |
| 15 | private static final Logger log = LoggerFactory.getLogger(Md5Utils.class); | |
| 16 | ||
| 17 | private static byte[] md5(String s) | |
| 18 | { | |
| 19 | MessageDigest algorithm; | |
| 20 | try | |
| 21 | { | |
| 22 | algorithm = MessageDigest.getInstance("MD5"); | |
| 23 | algorithm.reset(); | |
| 24 | algorithm.update(s.getBytes("UTF-8")); | |
| 25 | byte[] messageDigest = algorithm.digest(); | |
| 26 | return messageDigest; | |
| 27 | } | |
| 28 | catch (Exception e) | |
| 29 | { | |
| 30 | log.error("MD5 Error...", e); | |
| 31 | } | |
| 32 | return null; | |
| 33 | } | |
| 34 | ||
| 35 | private static final String toHex(byte hash[]) | |
| 36 | { | |
| 37 | if (hash == null) | |
| 38 | { | |
| 39 | return null; | |
| 40 | } | |
| 41 | StringBuffer buf = new StringBuffer(hash.length * 2); | |
| 42 | int i; | |
| 43 | ||
| 44 | for (i = 0; i < hash.length; i++) | |
| 45 | { | |
| 46 | if ((hash[i] & 0xff) < 0x10) | |
| 47 | { | |
| 48 | buf.append("0"); | |
| 49 | } | |
| 50 | buf.append(Long.toString(hash[i] & 0xff, 16)); | |
| 51 | } | |
| 52 | return buf.toString(); | |
| 53 | } | |
| 54 | ||
| 55 | public static String hash(String s) | |
| 56 | { | |
| 57 | try | |
| 58 | { | |
| 59 | return new String(toHex(md5(s)).getBytes(StandardCharsets.UTF_8), StandardCharsets.UTF_8); | |
| 60 | } | |
| 61 | catch (Exception e) | |
| 62 | { | |
| 63 | log.error("not supported charset...{}", e); | |
| 64 | return s; | |
| 65 | } | |
| 66 | } | |
| 67 | } | |
