thymeleaf 局部变量、属性优先级、注释
九、局部变量(local variable)
之前在th:each中遇到过局部变量
<tr th:each="prod : ${prods}">
...
</tr>
其中prod就是局部变量。
除此之外,thymeleaf提供了另外一种声明方式,通过使用th:each,语法如下:
<div th:with="firstPer=${persons[0]}">
<p>The name of the first person is <span th:text="${firstPer.name}">Julius Caesar</span>.</p>
</div>
多个可用逗号隔开:
<div th:with="firstPer=${persons[0]},secondPer=${persons[1]}">
<p>The name of the first person is <span th:text="${firstPer.name}">Julius Caesar</span>.</p>
<p>
But the name of the second person is
<span th:text="${secondPer.name}">Marcus Antonius</span>.
</p>
</div>
th:with属性允许用定义在同一属性内的变量
<div th:with="company=${user.company + ' Co.'},account=${accounts[company]}">...</div>
<p>
Today is:
<span th:text="${#calendars.format(today,'dd MMMM yyyy')}">13 february 2011</span>
</p>
Well, 我们想要 "MMMM dd'','' yyyy" 的日期格式,那么我们可以加下面的句子到 home_en.properties
date.format=MMMM dd'','' yyyy
<p>
Today is:
<span th:with="df=#{date.format}"
th:text="${#calendars.format(today,df)}">13 February 2011</span>
</p>
th:with优先级高于 th:text,所以我们可以放在一个标签内
十、属性优先级(Atrribute Precedence)
十一、注释 (Comments and Blocks)
11.1 <!-- ... --> 同HTML/XML的注释
<!-- User info follows -->
<div th:text="${...}">
...
</div>
11.2 thymeleaf解析器注释
thymeleaf解析的时候会被注释,静态打开时会显示
单行 <!--/* ... */-->
<!--/* This code will be removed at thymeleaf parsing time! */-->
多行时:
<!--/*-->
...
...
<!--/*-->
<!--/*-->
<div>
you can see me only before thymeleaf processes me!
</div>
<!--*/-->
11.3 静态解析时被注释,thymeleaf解析时会移除<!--/*/ 和 /*/-->标签对,内容保留
<span>hello!</span>
<!--/*/
<div th:text="${...}">
...
</div>
/*/-->
<span>goodbye!</span>
这个注释在写th:block的时候很有用哦
<table>
<!--/*/ <th:block th:each="user : ${users}"> /*/-->
<tr>
<td th:text="${user.login}">...</td>
<td th:text="${user.name}">...</td>
</tr>
<tr>
<td colspan="2" th:text="${user.address}">...</td>
</tr>
<!--/*/ </th:block> /*/-->
</table>
11.4 th:block 适用于比如说要循环两个<tr>
it could be useful, for example, when creating iterated tables that require more than one <tr> for each element