表達式

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Variable Expressions: ${...} Selection Variable Expressions: *{...} Message Expressions: #{...} Link URL Expressions: @{...} Fragment Expressions: ~{...}

${…}

獲取變量值，底層是OGNL表達式
獲取對象的屬性、調用方法

調用對象屬性

${person.father.name} ${person['father']['name']}

Map獲取

${countriesByCode.ES} ${personsByName['Stephen Zucchini'].age}

數組獲取

${personsArray[0].name}

調用方法，可以傳參數

${person.createCompleteName()} ${person.createCompleteNameWithSeparator('-')}

使用內置的基本對象

#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.

使用方式

內置的一些工具對象

#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).

使用方式

*{…}

選擇表達式
與${}在功能上是一樣，添加了一個補充功能
配合th:object進行使用

*號，表示當前div中，獲取的對象Object
直接獲取對象的屬性即可

<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>

#{…}

獲取國際化內容

@{…}

定義URL

~{…}

片段引用表達式

總結

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