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- package cn.efunbox.audio.util;
- import java.security.MessageDigest;
- /**
- * Created by yao on 17-10-12.
- */
- public class Common {
- //生成MD5
- public static String getMD5(String message) {
- String md5 = "";
- try {
- MessageDigest md = MessageDigest.getInstance("MD5"); // 创建一个md5算法对象
- byte[] messageByte = message.getBytes("UTF-8");
- byte[] md5Byte = md.digest(messageByte); // 获得MD5字节数组,16*8=128位
- md5 = bytesToHex(md5Byte); // 转换为16进制字符串
- } catch (Exception e) {
- e.printStackTrace();
- }
- return md5;
- }
- // 二进制转十六进制
- public static String bytesToHex(byte[] bytes) {
- StringBuffer hexStr = new StringBuffer();
- int num;
- for (int i = 0; i < bytes.length; i++) {
- num = bytes[i];
- if(num < 0) {
- num += 256;
- }
- if(num < 16){
- hexStr.append("0");
- }
- hexStr.append(Integer.toHexString(num));
- }
- return hexStr.toString().toUpperCase();
- }
- }
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