I am trying to create an spring boot application utilizing hibernate and h2. From what I have found online this can be done but I am having a problem starting the application. Hibernate is complaining that it cannot make a connection to the h2 database I have created.
Caused by: org.hibernate.HibernateException: Unable to make JDBC Connection [jdbc:h2:~/todo]
My theory is that the application needs to start for the database be available but hibernate is not letting the application start without the connection.
Am I on the right track with this theory, has there been similar issues that someone knows how to get around this?
Hibernate config
**<?xml version="1.0" encoding="UTF-8"?>
<hibernate-configuration>
<session-factory>
<!--Database connection settings -->
<property name="connection.driver_class">com.mysql.cj.jdbc.Driver</property>
<property name="connection.url">jdbc:h2:~/todo</property>
<property name="connection.username">username</property>
<property name="connection.password" />
<!--Set the database dialect -->
<property name="dialect">org.hibernate.dialect.H2Dialect</property>
<!--Echo all executed SQL to stdout-->
<property name="show_sql">true</property>
<!--Drop and re-create the database schema on startup-->
<property name="hbm2ddl.auto">create</property>
<!--Name the annotated Entity classes -->
<mapping class="com.todo.beans.User" />
</session-factory>
</hibernate-configuration>**
h2 config
import org.h2.server.web.WebServlet;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class WebConfiguration {
@Bean
ServletRegistrationBean h2servletRegistration(){
ServletRegistrationBean registrationBean = new ServletRegistrationBean( new WebServlet());
registrationBean.addUrlMappings("/console/*");
return registrationBean;
}
}
change following properties in hibernate config <property name="connection.driver_class">org.h2.Driver</property> <property name="connection.url">jdbc:h2:mem:todo;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE </property>
Problem is with driver class; you may keep url as it is.
This sample project can help you.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.