SpringBoot使用html模版，Controller需要使用注解：@Controller

pom配置

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

yml配置

spring:
    thymeleaf:
    mode: HTML
    encoding: UTF-8
    prefix: classpath:/templates/
    suffix: .html