不安全的随机数，剩余一个缺陷

modules/boe-module-idconfig/src/main/java/com/xboe/module/idconfig/IdGeneratorAutoConfig.java

@@ -3,6 +3,7 @@ package com.xboe.module.idconfig;
 import java.net.InetAddress;
 import java.net.NetworkInterface;
 import java.net.SocketException;
+import java.security.SecureRandom;
 import java.util.Enumeration;
 
 import javax.annotation.Resource;
@@ -50,8 +51,10 @@ public class IdGeneratorAutoConfig {
 			dataCenterId=ipm.getDcNum();
 		}else {
 			log.warn("无IP【"+ip+"】的配置的workNum和DataCenterNum,系统自动生成随机数");
-			workServerId=RandomUtils.nextInt(0,31);
-			dataCenterId=RandomUtils.nextInt(0,31);
+			SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
+			workServerId = random.nextInt(31);
+			dataCenterId = random.nextInt(31);
+
 			ipm=new IPMapping();
 			ipm.setId(md5);
 			ipm.setIp(ip);