 th:if="${activity != null}"><a style="background: green" th:href="@{activity(id=${activity.id})}">参与活动： [[${activity.title}]]</a></li>
                                                    <li><a style="background: orange" th:text="${article.readCount + '次阅读'}"></a></li>
                                                    <li><a th:text="${#dates.format(article.gmtCreate,'yyyy年MM月dd日 HH:mm:ss')}"></a></li>
                                                </ul>
                           