步骤:
(1) 创建Maven web project;
(2) 在pom.xml文件添加依赖;
(3) 配置application.properties支持jsp
(4) 编写测试Controller
(5) 编写JSP页面
(6) 编写启动类App.java

1、使用IDEA创建Maven工程

2、添加依赖:

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.3.RELEASE</version>
</parent>

<properties>
    <java.version>1.8</java.version>
</properties>

<dependencies>
    <!-- spring-boot-starter-web: MVC,AOP的依赖包.... -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <!-- <version></version> 由于我们在上面指定了 parent(spring boot) -->
    </dependency>

    <!-- servlet 依赖. -->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
    </dependency>

    <!-- tomcat 的支持. -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.apache.tomcat.embed</groupId>
        <artifactId>tomcat-embed-jasper</artifactId>
        <scope>provided</scope>
    </dependency>

</dependencies>

3、配置application.properties:

# 页面默认前缀目录
spring.mvc.view.prefix=/WEB-INF/jsp/
# 响应页面默认后缀
spring.mvc.view.suffix=.jsp

yml的写法:

spring:
     mvc:
        view:
            prefix: /WEB-INF/jsp/
            suffix: .jsp

4、编写测试的controller: JspController

@Controller
public class JspController {
 
	@RequestMapping("helloJsp")
	public String hello() {
		return "hello" ;
	}
 
}

5、编写hello.jsp页面:

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>hello</title>
</head>
<body>
<!--nav-end-->
<div style="text-align: center;color: red;font-size: 30px">
	Hello Spring Boot !
</div>
</body>
</html>

6、编写启动类App.java:

@SpringBootApplication
public class App  {
 
	public static void main(String[] args) {
		SpringApplication.run(App.class) ;
	}
}

运行App.java, 访问地址: http://127.0.0.1:8080/helloJsp

运行结果: