springboot session

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.session</groupId>
        <artifactId>spring-session-data-redis</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-redis</artifactId>
    </dependency>
</dependencies>

spring.redis.host=localhost
spring.redis.port=6379
spring.session.store-type=redis

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession;

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

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpSession;

@RestController
public class SessionController {

    @GetMapping("/setSession")
    public String setSession(HttpSession session) {
        session.setAttribute("user", "JohnDoe");
        return "Session set";
    }

    @GetMapping("/getSession")
    public String getSession(HttpSession session) {
        String user = (String) session.getAttribute("user");
        return "User in session: " + user;
    }
}