MD5工具类

import java.security.MessageDigest;

public class MD5Tools {
   public final static String MD5(String s) {
      char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
            'A', 'B', 'C', 'D', 'E', 'F' };
      try {
         byte[] btInput = s.getBytes();
         // 获得MD5摘要算法的 MessageDigest 对象
         MessageDigest mdInst = MessageDigest.getInstance("MD5");
         // 使用指定的字节更新摘要
         mdInst.update(btInput);
         // 获得密文
         byte[] md = mdInst.digest();
         // 把密文转换成十六进制的字符串形式
         int j = md.length;
         char str[] = new char[j * 2];
         int k = 0;
         for (int i = 0; i < j; i++) {
            byte byte0 = md[i];
            str[k++] = hexDigits[byte0 >>> 4 & 0xf];
            str[k++] = hexDigits[byte0 & 0xf];
         }
         return new String(str);
      } catch (Exception e) {
         e.printStackTrace();
         return null;
      }
   }

 public static String getAccountMD5(UsAccount account){
      String sprit ="|";
      String key = "mooyii2015";
      StringBuffer sb = new StringBuffer();
      sb.append(account.getUserId()+sprit);
      sb.append(account.getOrgId()+sprit);
      sb.append(account.getAccountCash()+sprit);
      sb.append(account.getAccountVirtual()+sprit);
      sb.append(account.getAccountBonus()+sprit);
      sb.append(key);
      System.out.println(sb.toString());
      return MD5(sb.toString());
   }
   
   public static void main(String[] args){
      UsAccount account = new UsAccount();
      account.setUserId("user201511021029361178621");
      account.setOrgId("user201511021029361178621");
      account.setAccountCash("1000");
      account.setAccountBonus("200");
      account.setAccountVirtual("42");
      System.out.println(MD5Tools.getAccountMD5(account));
      System.out.println(MD5Tools.getAccountMD5(account).length());
   }
}