using thymeleaf之四操作符

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4.1算术操作符

+, -, *, /, %
e.g.

<div><ol><li>+：1+1=<span th:text="1+1">1+1</span>.</li><li>-： 2-1=<span th:text="2-1">2-1</span>.</li><li>*：2*3=<span th:text="2*3">2*3</span>.</li><li>/： 9/4=<span th:text="9/4">9/4</span>.</li><li>%：9%4=<span th:text="9%4">9%4</span>.</li></ol></div>

4.2布尔运算

e.g.

<div><ol><li th:inline="text">and：<span  th:if="${!#lists.isEmpty(list)} and ${#lists.isEmpty(list)}" th:text="${!#lists.isEmpty(list)} and ${#lists.isEmpty(list)}">and</span>[[${!#lists.isEmpty(list)} and ${#lists.isEmpty(list)}]]</li><li>or：<span  th:if="${!#lists.isEmpty(list)} or ${#lists.isEmpty(list)}" th:text="${!#lists.isEmpty(list)} or ${#lists.isEmpty(list)}">or</span></li><li>!(not)：<span  th:if="${!#lists.isEmpty(list)}" th:text="${!#lists.isEmpty(list)}">not</span></li></ol></div>

4.3不等和相等运算符

e.g.

<div><ol><li>比较表达式：<ol><li>>(gt)：<span th:text="1+1" th:if="${#lists.size(list)} > 1">大于></span>else</li><li>小于lt：<span th:if="${#lists.size(list)} lt 1">小于</span>else</li><li>>=(ge)：<span  th:if="${#lists.size(list)} >= 1">大于等于>=</span>else</li><li>小于等于(le)：<span  th:if="${#lists.size(list)} le 1">小于等于</span>else</li><li>!(not)：<span  th:if="${!#lists.isEmpty(list)}">!(not)</span>else</li></ol></li><li>相等和不等表达式： <ol><li>==(eq)：<span th:text="'Execution mode is ' + ( (${execMode} == 'dev')? 'Development' : 'Production')">等于==</span></li><li>!=(ne/neq)：size:<span th:text="${#lists.size(list)}" th:if="${#lists.size(list)} != 1"></span></li></ol></li></ol></div>

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