JAVA生成消息序列

public class MsgSeqGenerator

{

private static AtomicLong id = new AtomicLong(0);

private static String moduleId;

public static void setModuleId(String moduleId)

{

MsgSeqGenerator.moduleId = moduleId;

}

public static String getMsgSeq()

{

String msgSeq;

if (StringUtils.isEmpty(moduleId))

{

id.compareAndSet(0xFFFFFFFFL, 0);

long seq = id.incrementAndGet();

msgSeq = String.format("%08X", seq);

}

else

{

id.compareAndSet(0xFFFFFL, 0);

long seq = id.incrementAndGet();

msgSeq = moduleId + String.format("%05X", seq);

}

return msgSeq;

}

}