package com.mzl.flower.utils.wechatpay;
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import java.security.MessageDigest;
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import java.util.UUID;
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/**
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* 常用工具类的封装，md5,uuid等
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*/
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public class CommonUtils {
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/**
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* 生成 uuid， 即用来标识一笔单，也用做 nonce_str
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* @return
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*/
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public static String generateUUID(){
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String uuid = UUID.randomUUID().toString().
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replaceAll("-","").substring(0,32);
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return uuid;
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}
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/**
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* md5常用工具类
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* @param data
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* @return
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*/
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public static String MD5(String data){
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try {
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MessageDigest md5 = MessageDigest.getInstance("MD5");
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byte [] array = md5.digest(data.getBytes("UTF-8"));
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StringBuilder sb = new StringBuilder();
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for (byte item : array) {
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sb.append(Integer.toHexString((item & 0xFF) | 0x100).substring(1, 3));
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}
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return sb.toString().toUpperCase();
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}catch (Exception e){
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e.printStackTrace();
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}
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return null;
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}
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}
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