Springboot学习：Thymeleaf 语法基础

参考：

thymeleaf官方指南

 新一代Java模板引擎Thymeleaf

Thymeleaf基本知识

 thymeleaf总结文章

 Thymeleaf 模板的使用

 thymeleaf 学习笔记

基本规则

th:text；改变当前元素里面的文本内容；

th：任意html属性；来替换原生属性的值

表达式：

Simple expressions:（表达式语法）

    Variable Expressions: ${...}：获取变量值；OGNL；

    		1）、获取对象的属性、调用方法

    		2）、使用内置的基本对象：

    			#ctx : the context object.

    			#vars: the context variables.

                #locale : the context locale.

                #request : (only in Web Contexts) the HttpServletRequest object.

                #response : (only in Web Contexts) the HttpServletResponse object.

                #session : (only in Web Contexts) the HttpSession object.

                #servletContext : (only in Web Contexts) the ServletContext object.

                ${session.foo}

            3）、内置的一些工具对象：

#execInfo : information about the template being processed.

#messages : methods for obtaining externalized messages inside variables expressions, in the same way as they would be obtained using #{…} syntax.

#uris : methods for escaping parts of URLs/URIs

#conversions : methods for executing the configured conversion service (if any).

#dates : methods for java.util.Date objects: formatting, component extraction, etc.

#calendars : analogous to #dates , but for java.util.Calendar objects.

#numbers : methods for formatting numeric objects.

#strings : methods for String objects: contains, startsWith, prepending/appending, etc.

#objects : methods for objects in general.

#bools : methods for boolean evaluation.

#arrays : methods for arrays.

#lists : methods for lists.

#sets : methods for sets.

#maps : methods for maps.

#aggregates : methods for creating aggregates on arrays or collections.

#ids : methods for dealing with id attributes that might be repeated (for example, as a result of an iteration).

    Selection Variable Expressions: *{...}：选择表达式：和${}在功能上是一样；

    	补充：配合 th:object="${session.user}：

   <div th:object="${session.user}">

    <p>Name: <span th:text="*{firstName}">Sebastian</span>.</p>

    <p>Surname: <span th:text="*{lastName}">Pepper</span>.</p>

    <p>Nationality: <span th:text="*{nationality}">Saturn</span>.</p>

    </div>

    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

    		<div th:insert="~{commons :: main}">...</div>

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: _

巴特西

Springboot学习：Thymeleaf 语法基础

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