1、引入thymeleaf;
切换thymeleaf版本 org.springframework.boot spring‐boot‐starter‐thymeleaf 3.0.9.RELEASE 2.2.2
2、Thymeleaf使用
@ConfigurationProperties(prefix = "spring.thymeleaf")public class ThymeleafProperties {private static final Charset DEFAULT_ENCODING = Charset.forName("UTF‐8"); private static final MimeType DEFAULT_CONTENT_TYPE = MimeType.valueOf("text/html"); public static final String DEFAULT_PREFIX = "classpath:/templates/"; public static final String DEFAULT_SUFFIX = ".html"; //
只要我们把HTML页面放在classpath:/templates/,thymeleaf就能自动渲染;
使用: 导入thymeleaf的名称空间3、语法规则
标签
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. ${session.foo} 3)、内置的一些工具对象:#execInfo : information about the template being processed.#messages : methods for obtaining externalized messages inside variables expressions, in thesame way as they would be obtained using #{…} syntax.#uris : methods for escaping parts of URLs/URIs#conversions : methods for executing the configured conversion service (if any).#dates : methods for java.util.Date objects: formatting, component extraction, etc.#calendars : analogous to #dates , but for java.util.Calendar objects.#numbers : methods for formatting numeric objects.#strings : methods for String objects: contains, startsWith, prepending/appending, etc.#objects : methods for objects in general.#bools : methods for boolean evaluation.#arrays : methods for arrays.#lists : methods for lists.#sets : methods for sets.#maps : methods for maps.#aggregates : methods for creating aggregates on arrays or collections.#ids : methods for dealing with id attributes that might be repeated (for example, as aresult of an iteration). Selection Variable Expressions: *{...}:选择表达式:和${}在功能上是一样; 补充:配合 th:object="${session.user}:Name:
Sebastian.Surname:
Pepper.Nationality:
Saturn. Message Expressions: #{...}:获取国际化内容 Link URL Expressions: @{...}:定义URL; @{/order/process(execId=${execId},execType='FAST')} Fragment Expressions: ~{...}:片段引用表达式... 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): ! , notComparisons 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: _