Spring boot cannot determine embedded database driver class for database type none

Question

Problem :

This is the error that is thrown when trying to run my web app:

[INFO] WARNING: Nested in org.springframework.beans.factory.BeanCreationException: Error creating bean with name
'org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration': Injection of autowired dependencies failed; nested exception is 
org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.sql.DataSource 
org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.dataSource; nested exception is org.springframework.beans.factory.BeanCreationException: Error
 creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceAutoConfiguration
$NonEmbeddedConfiguration.class]: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method
 [public javax.sql.DataSource org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration$NonEmbeddedConfiguration.dataSource()] threw exception; nested
 exception is org.springframework.beans.factory.BeanCreationException: Cannot determine embedded database driver class for database type NONE. If you want an embedded
 database please put a supported one on the classpath.:

 

I know I have the correct combination of the datanucleus-appengine and datanucleus jars:

2.1: Requires DataNucleus 3.1.x (core, api-jdo, api-jpa, enhancer) and  Requires SDK 1.6.4+ Note that this release of the Datanucleus is no longer supported by your DataNucleus project

 

I don’t know what is missing in my app?

Answer 1

I think you have not provided the Spring Boot with the enough information to auto-configure the DataSource. To do so, you will just need to add some more properties to your application.properties with your spring.datasource prefix. Please have a look at the DataSourceProperties to see all of the required properties that you must set.

Also you will need to provide the correct url and the driver class name as below :

spring.datasource.url = …

spring.datasource.driver-class-name = …