To get an H2 Database Web Console accessing an in-memory database running on Spring Boot:

1. Register H2’s WebServlet (with UrlMapping /console/*) to your Spring project in a Configuration annotated class. Restart your Application.
2. Open a web page to http://localhost:8080/console/
3. Be sure you’re accessing the correct database JDBC URL (default would be jdbc:h2:mem:testdb)

(Credit: )

import org.h2.server.web.WebServlet;import org.springframework.boot.context.embedded.ServletRegistrationBean;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;@Configurationpublic class H2ConsoleWebConfiguration {    @Bean    ServletRegistrationBean h2servletRegistration() {        ServletRegistrationBean registrationBean = new ServletRegistrationBean(new WebServlet());        registrationBean.addUrlMappings("/console/*");        return registrationBean;    }}