MD5加密工具类

工具类

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

/*
 * @Comment :md5加密工具类
 * @Created :2018/12/14 18:00
 * @Name : YJ
 */public class Md5 {
    /**
     * md5加密
     * @param info
     * @return
     */
    public static String getMD5(String info)
    {
        try
        {
            MessageDigest md5 = MessageDigest.getInstance("MD5");
            md5.update(info.getBytes("UTF-8"));
            byte[] encryption = md5.digest();

            StringBuffer strBuf = new StringBuffer();
            for (int i = 0; i < encryption.length; i++)
            {
                if (Integer.toHexString(0xff & encryption[i]).length() == 1)
                {
                    strBuf.append("0").append(Integer.toHexString(0xff & encryption[i]));
                }
                else
                {
                    strBuf.append(Integer.toHexString(0xff & encryption[i]));
                }
            }

            return strBuf.toString();
        }
        catch (NoSuchAlgorithmException e)
        {
            return "";
        }
        catch (UnsupportedEncodingException e)
        {
            return "";
        }
    }

}

使用方法:

    //加密前
    String s="123456";
    //加密后
    String ss=Md5.getMD5(s);

ss就是加密之后的数据