【1】是什么
Thymeleaf是一个用于Web和独立环境的现代服务器端Java模板引擎。SpringBoot推荐使用Thymeleaf。
Thymeleaf is a modern server-side Java template engine for both web and standalone environments.
Thymeleaf’s main goal is to bring elegant natural templates to your development workflow — HTML that can be correctly displayed in browsers and also work as static prototypes, allowing for stronger collaboration in development teams.
With modules for Spring Framework, a host of integrations with your favourite tools, and the ability to plug in your own functionality, Thymeleaf is ideal for modern-day HTML5 JVM web development — although there is much more it can do.
【2】SpringBoot中使用Thymeleaf
对SpringBoot来说，没有什么是一个starter解决不了的，官网示例：
在pom文件中添加依赖：
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency>
默认版本是2.1.6，这是比较低的，如下图：
修改版本：
<properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> <thymeleaf.version>3.0.9.RELEASE</thymeleaf.version> <!-- 布局功能的支持程序 thymeleaf3主程序 layout2以上版本 --> <!-- thymeleaf2 layout1--> <thymeleaf-layout-dialect.version>2.2.2</thymeleaf-layout-dialect.version> </properties>
【3】Thymeleaf使用配置规则
ThymeleafProperties 类如下：
@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"; /** * Check that the template exists before rendering it (Thymeleaf 3+). */ private boolean checkTemplate = true; /** * Check that the templates location exists. */ private boolean checkTemplateLocation = true;
即只要我们把HTML页面放在classpath:/templates/，thymeleaf就能自动渲染。
另外，记得开发时在application.yml文件中设置thymeleaf缓存为false：
spring: thymeleaf: cache: false
【4】页面使用Thymeleaf语法
HTML页面如果想使用Thymeleaf语法，则必须引入Thymeleaf命名空间。
示例如下：
<html lang="en" xmlns:th="http://www.thymeleaf.org">
