目录 start
目录 end |2018-04-08| 码云 | CSDN | OSChina
目录 end
辣鸡
lt 小于
eq 等于
gt 大于
le 小于等于
ge 大于等于
拼接参数：th:href="@{/student/ChooseTopic/{id} (id=${pageNum}-2)}"
th:href="@{/student/ChooseTopic/{id} (id=${pageNum}-2)}"
判断块<th:block th:if="${pageNum lt pageTotal}" ></th:block>
<th:block th:if="${pageNum lt pageTotal}" ></th:block>
th:if="${#lists.size(topicList) == 0}"
