package com.atguigu.surveypark.util;

import java.security.MessageDigest;

/**

 * 数据

 */

public class DataUtil {

        /**

         * 使用md5算法进行加密

         */

        public static String md5(String src){

                try {

                        StringBuffer buffer = new StringBuffer();

                        char[] chars = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};

                        byte[] bytes = src.getBytes();

                        MessageDigest md = MessageDigest.getInstance("MD5");

                        byte[] targ = md.digest(bytes);

                        for(byte b: targ){

                                buffer.append(chars[(b >> 4) & 0x0F]);

                                buffer.append(chars[b & 0x0F]);

                        }

                        return buffer.toString();

                } catch (Exception e) {

                        e.printStackTrace();

                }

                return null ;

        }

}