Thymeleaf模板引擎的使用

2019-10-25 06:39:38来源:博客园 阅读 ()

新老客户大回馈,云服务器低至5折

Thymeleaf模板引擎的使用

Thymeleaf模板引擎的使用

一、模板引擎

JSP、Velocity、Freemarker、Thymeleaf

二、springboot推荐使用Thymeleaf模板引擎

特点:语法更简单,功能更强大;

1、引入Thymeleaf

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>

2、Thymeleaf的使用

@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;

3、导入thymeleaf的名称空间

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

4、使用thymeleaf语法

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h1>成功!</h1>
    <!--th:text 将div里面的文本内容设置为 -->
    <div th:text="${hello}">这是显示欢迎信息</div>
</body>
</html>

三、语法规则

1、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

2、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: _ 

原文链接:https://www.cnblogs.com/fxsenblog/p/11707618.html
如有疑问请与原作者联系

标签:

版权申明:本站文章部分自网络,如有侵权,请联系:west999com@outlook.com
特别注意:本站所有转载文章言论不代表本站观点,本站所提供的摄影照片,插画,设计作品,如需使用,请与原作者联系,版权归原作者所有

上一篇:【源码解析】凭什么?spring boot 一个 jar 就能开发 web 项目

下一篇:JeeSite | 保存信息修改记录封装