public static LinkedList<Member> pollMemberList = new LinkedList<>();
当我们移除pollMemberList里面元素Member的时候,不要使用for循环
if (pollMemberList.size()>0){
//清空全局轮询的list
Iterator<Member> iteratorlist = pollMemberList.iterator();
while(iteratorlist.hasNext()){
Member integer = iteratorlist.next();
iteratorlist.remove(); //注意这个地方
}
}