依赖:org.apache.commons.codec.digest.DigestUtils
支持MD5,SHA-1,SHA-256
Apache下载地址:http://commons.apache.org/proper/commons-codec/download_codec.cgi

import java.security.MessageDigest;  import java.security.NoSuchAlgorithmException;     /**   * CiphertextUtil   *   * @author ysj   */  public class CiphertextUtil {      public static final String MD5 = "MD5";      public static final String SHA_1 = "SHA-1";      public static final String SHA_256 = "SHA-256";      private static final char[] CH_HEX = {'0', '1', '2', '3', '4', '5', '6', '7', '8',          '9', 'A', 'B', 'C', 'D', 'E', 'F'};         /**       * 加密字符串       *       * @param sourceStr    需要加密目标字符串       * @param algorithmsName 算法名称(如:MD5,SHA-1,SHA-256)       * @return       */      public static String passAlgorithmsCiphering(String sourceStr,String algorithmsName){          String password = "";          MessageDigest md;          try {              md = MessageDigest.getInstance(algorithmsName);              // 使用指定byte[]更新摘要              md.update(sourceStr.getBytes());              // 完成计算，返回结果数组              byte[] b = md.digest();              password = byteArrayToHex(b);          } catch (NoSuchAlgorithmException e) {              e.printStackTrace();          }          return password;      }         /**       * 将字节数组转为十六进制字符串       *       * @param bytes       * @return 返回16进制字符串       */      private static String byteArrayToHex(byte[] bytes) {          // 一个字节占8位，一个十六进制字符占4位；十六进制字符数组的长度为字节数组长度的两倍          char[] chars = new char[bytes.length * 2];          int index = 0;          for (byte b : bytes) {              // 取字节的高4位              chars[index++] = CH_HEX[b >>> 4 & 0xf];              // 取字节的低4位              chars[index++] = CH_HEX[b & 0xf];          }          return new String(chars);      }  }

import org.apache.commons.codec.digest.DigestUtils;     /**   * CiphertextUtil   *   * @author ysj   */  public class CiphertextUtil {      public static final String MD2 = "MD2";      public static final String MD5 = "MD5";      public static final String SHA_1 = "SHA1";      public static final String SHA_256 = "SHA256";      public static final String SHA_384 = "SHA384";      public static final String SHA_512 = "SHA512";         /**       * 加密字符串       *       * @param sourceStr    需要加密目标字符串       * @param algorithmsName 算法名称(如:MD2,MD5,SHA1,SHA256,SHA384,SHA512)       * @return       */      public static String passAlgorithmsCiphering(String sourceStr,String algorithmsName){          String password = "";          switch(algorithmsName){          case "MD2":              password = DigestUtils.md2Hex(sourceStr);              break;          case "MD5":              password = DigestUtils.md5Hex(sourceStr);              break;          case "SHA1":              password = DigestUtils.sha1Hex(sourceStr);              break;          case "SHA256":              password = DigestUtils.sha256Hex(sourceStr);              break;          case "SHA384":              password = DigestUtils.sha384Hex(sourceStr);              break;          case "SHA512":              password = DigestUtils.sha512Hex(sourceStr);              break;          }          return password;      }  }