【Spring Boot教程】(十一):thymeleaf语法

页面加入命名空间

<html lang="en" xmlns:th="http://www.thymeleaf.org">

表达式:

  • ${}用的最多也是最强大的表达式,获取变量值;底层是OGNL;
  • Selection Variable Expressions: *{…}:选择表达式:和${}在功能上是一样;
  • Message Expressions: #{…}:获取国际化内容
  • Link URL Expressions: @{…}:定义URL
@{/order/process(execId=${execId},execType='FAST')}
  • Fragment Expressions: ~{…}:片段引用表达式,引入另一个界面
<div th:insert="~{commons :: main}">...</div>

表达式支持的语法:

Literals(字面量)
    Text literals: 'one text' , 'Another one!' ,…
    Number literals: 0 , 34 , 3.0 , 12.3 ,…
    Boolean literals: true , false
    Null literal: null
    Literal tokens: one , sometext , main ,…
Text operations:(文本操作)
    String concatenation: +
    Literal substitutions: |The name is ${name}|
Arithmetic operations:(数学运算)
    Binary operators: + , - , * , / , %
    Minus sign (unary operator): -
Boolean operations:(布尔运算)
    Binary operators: and , or
    Boolean negation (unary operator): ! , not
Comparisons and equality:(比较运算)
    Comparators: > , < , >= , <= ( gt , lt , ge , le )
    Equality operators: == , != ( eq , ne )
Conditional operators:(条件运算)(三元运算符)
    If-then: (if) ? (then)
    If-then-else: (if) ? (then) : (else)
    Default: (value) ?: (defaultvalue)
Special tokens:
    No-Operation: _

综合案例:

<!DOCTYPE html>
<!--导入名称空间-->
<html  xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h1>成功</h1>
    <!--th:text 将div的文本内容设置为-->
    <div id="div01" class="myDiv" th:id="${hello}" th:class="${hello}" th:text="${hello}">这里显示的是欢迎信息</div>
    <br>
		<!--th:utext 不会转义特殊字符,会直接做出来一个h1标签,但是text不会,会显示<h1>你好</h1>-->
    <div th:text="${hello}">这里显示的是欢迎信息</div>
    <div th:utext="${hello}">这里显示的是欢迎信息</div>
    <br>

    <!--遍历-->
    <h4 th:text="${user}" th:each="user:${users}"></h4>
    <br>
    <!--行内写法-->
    <h4>
        <span th:each="user:${users}">[[${user}}]]</span>
    </h4>
</body>
</html>

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转载自blog.csdn.net/m0_46521785/article/details/114677410