第二次迭代清单
我有一个带有胸腺的页面，并通过各节列表迭代，以为每个部分创建按钮。稍后，在同一页面中，我想再次迭代同一列表，但我遇到了一个空错误
<div class="sections">
<div th:each = "section: ${chapter.getSections()}" th:text= "${section.getTitle()}"/>
</div>
.
. // Later on the code
.
// This is where I get the null exception trying to call section.getContent()
<div th:each = "section: ${chapter.getSections()}" th:insert="${section.getContent()}"/>
I have a page produced with thymeleaf and I iterate through a sections list to create buttons for each section. Later in the same page I want to iterate the same list again but I get a null error
<div class="sections">
<div th:each = "section: ${chapter.getSections()}" th:text= "${section.getTitle()}"/>
</div>
.
. // Later on the code
.
// This is where I get the null exception trying to call section.getContent()
<div th:each = "section: ${chapter.getSections()}" th:insert="${section.getContent()}"/>
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