import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import org.apache.log4j.Logger; /** * 将密码进行MD5加密处理 */ public class PassWordDigester { private static Logger logger = Logger.getLogger(PassWordDigester.class); private static final String ALGORITHM_MD5 = "MD5"; /** * Encrypt the password with MD5 * @param pass the password to encryption * 查看本栏目更多精彩内容:http://www.bianceng.cnhttp://www.bianceng.cn/Programming/Java/ * @return encryption string */ public static String getPassMD5(String pass) { String keys = null; try { MessageDigest md = MessageDigest.getInstance(ALGORITHM_MD5); if (pass == null) { pass = ""; } byte[] bPass = pass.getBytes("UTF-8"); md.update(bPass); // keys = new String(md.digest(), "GBK"); keys = bytesToHexString(md.digest()); } catch (NoSuchAlgorithmException aex) { logger.error("there is no " + ALGORITHM_MD5 + " Algorithm!"); } catch (java.io.UnsupportedEncodingException uex) { logger.error("can not encode the password - " + uex.getMessage()); } return keys; } /** * 将beye[]转换为十六进制字符串 * @param bArray * @return */ public static final String bytesToHexString(byte[] bArray) { StringBuffer sb = new StringBuffer(bArray.length); String sTemp; for (int i = 0; i < bArray.length; i++) { sTemp = Integer.toHexString(0xFF & bArray[i]); if (sTemp.length() < 2){ sb.append(0); } sb.append(sTemp.toUpperCase()); } return sb.toString(); } public static void main(String[] args){ String a = "qazwsx"; System.out.println(getPassMD5(a)); } }
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