偶出现报错   一般是长时间没操作时候会出现 报错日志.txt

@Transient
        public Boolean getIsBottom() {
                //只相差1那中间肯定没有子栏目，这样效率更高效
                if (getRgt() - getLft() == 1) {
                        return true;
                }
                Set<Channel> childs = getChild();
                if (childs == null) {
                        return true;
                }
                // 判断是否为根节点
                if (childs.isEmpty()) {
                        return true;
                } else {
                        int i = 0;
                        for (Channel channel : childs) {
                                if (channel.getRecycle()) {
                                        i++;
                                }
                                /**子栏目数量大于2，只要有1个是未回收状态，则说明有子节点，及早退出循环*/
                                if(childs.size()>=2){
                                        return false;
                                }
                        }
                        // 如果在回收站的个数小于总个数表示不是根节点
                        if (i < childs.size()) {
                                return false;
                        }
                        return true;
                }
        }

在替换下看看