Thymelaf用作layout

Thymeleaf可以在一个大文件里用th:relace、th:input或者th:include来引用一个小文件。也可以把一个大的文件用作layout，在它的基础上扩展。

layout.html

<!DOCTYPE html>
<html lang="zh-CN"
      xmlns:th="http://www.thymeleaf.org"
      th:fragment="layout (title, body)">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title th:replace="${title}">Layout</title>
</head>
<body>
</body>
</html>

extend.html

<!DOCTYPE html>
<html lang="zh-CN"
      xmlns:th="http://www.thymeleaf.org"
      th:replace="~{layout::layout (~{::title}, ~{::body})}">
<head>
  <title>Extend</title>
</head>
<body>
</body>
</html>