package com.rick.utils;import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
/*** -------------------------------------------* Title : MD5Util * Description : MD5加密算法* Create on : 2017年4月5日 上午9:53:42* Copyright (C) strongunion* @author RICK* 修改历史: * 修改人 修改日期 修改描述* -------------------------------------------*/
public class MD5Util {// 全局数组private final static String[] strDigits = { "0", "1", "2", "3", "4", "5","6", "7", "8", "9", "a", "b", "c", "d", "e", "f" };public MD5Util() {}// 返回形式为数字跟字符串private static String byteToArrayString(byte bByte) {int iRet = bByte;if (iRet < 0) {iRet += 256;}int iD1 = iRet / 16;int iD2 = iRet % 16;return strDigits[iD1] + strDigits[iD2];}// 返回形式只为数字private static String byteToNum(byte bByte) {int iRet = bByte;System.out.println("iRet1=" + iRet);if (iRet < 0) {iRet += 256;}return String.valueOf(iRet);}// 转换字节数组为16进制字串private static String byteToString(byte[] bByte) {StringBuffer sBuffer = new StringBuffer();for (int i = 0; i < bByte.length; i++) {sBuffer.append(byteToArrayString(bByte[i]));}return sBuffer.toString();}public static String getMD5Code(String strObj) {String resultString = null;try {resultString = new String(strObj);MessageDigest md = MessageDigest.getInstance("MD5");// md.digest() 该函数返回值为存放哈希值结果的byte数组resultString = byteToString(md.digest(strObj.getBytes()));} catch (NoSuchAlgorithmException ex) {ex.printStackTrace();}return resultString;}public static void main(String[] args) {MD5Util getMD5 = new MD5Util();System.out.println(getMD5.getMD5Code("123456"));}
}