In pom.xml add dependency:
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
</dependency>
</dependencies>
Then in application.properties:
spring.h2.console.enabled=true spring.h2.console.path=/h2
Now, in the broswer, we can access h2 database though url: localhost:8080/h2
[Spring boot] Integrating with h2 database
原文：https://www.cnblogs.com/Answer1215/p/10269225.html