Thymeleaf布局

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Thymeleaf布局

前言

在web 开发过程中，经常会有一些公共页面，例如head,foot,menu等，利用layout可以极大的提高开发效率。通过使用Thymeleaf Layout Dialect,可以便捷使用布局，减少代码的重复。

正文

1.配置

在pom 中增加依赖：

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<dependency>
	<groupId>nz.net.ultraq.thymeleaf</groupId>
	<artifactId>thymeleaf-layout-dialect</artifactId>
</dependency>

Spring Boot 2 java 初始化配置：

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@Bean
public LayoutDialect layoutDialect() {
    return new LayoutDialect();
}

以上配置会使layout 命名空间可以引入五种属性：decorate, title-pattern, insert, replace, fragment

Thymeleaf Layout Dialect 默认可以合并layout与content中head信息，默认在layout 标签之后追加content中的标签。

2.布局

Layout.html

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<!DOCTYPE html>
<html xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout">
<head>
  <title>Layout page</title>
  <script src="common-script.js"></script>
</head>
<body>
  <header>
    <h1>My website</h1>
  </header>
  <section layout:fragment="content">
    <p>Page content goes here</p>
  </section>
  <footer>
    <p>My footer</p>
    <p layout:fragment="custom-footer">Custom footer here</p>
  </footer>  
</body>
</html>

Content1.html

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<!DOCTYPE html>
<html xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout"
  layout:decorate="~{Layout}">
<head>
  <title>Content page 1</title>
  <script src="content-script.js"></script>
</head>
<body>
  <section layout:fragment="content">
    <p>This is a paragraph from content page 1</p>
  </section>
  <footer>
    <p layout:fragment="custom-footer">This is some footer content from content page 1</p>
  </footer>
</body>
</html>

生成结果如下：

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<!DOCTYPE html>
<html>
<head>
  <title>Content page 1</title>
  <script src="common-script.js"></script>
  <script src="content-script.js"></script>
</head>
<body>
  <header>
    <h1>My website</h1>
  </header>
  <section>
    <p>This is a paragraph from content page 1</p>
  </section>
  <footer>
    <p>My footer</p>
    <p>This is some footer content from content page 1</p>
  </footer>  
</body>
</html>

3.布局传递数据

Child/content template:

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<html layout:decorate="your-layout.html" th:with="greeting='Hello!'">

Parent/layout template:

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<html>
  ...
  <p th:text="${greeting}"></p> <!-- You'll end up with "Hello!" in here -->

4.配置title

Layout.html

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<!DOCTYPE html>
<html xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout">
<head>
  <title layout:title-pattern="$LAYOUT_TITLE - $CONTENT_TITLE">My website</title>
</head>
...
</html>

Content.html

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<!DOCTYPE html>
<html xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout"
  layout:decorator="Layout">
<head>
  <title>My blog</title>
</head>
...
</html>

生成结果如下：

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<!DOCTYPE html>
<html>
<head>
  <title>My website - My blog</title>
</head>
...
</html>

参考

  1. Thymeleaf Layout Dialect