Spring Boot YAML Auto Data Source Configuration Issue - Data Source URL not picked up

Currently, We are creating a spring boot project for our newer modules.

Technology We have used as follows :

1. Java 1.8
2. Maven 3.5.2
3. Spring Boot: 1.5.6.RELEASE (spring-boot-starter-parent)

public class Application {

public static void main(String[] args) {
    SpringApplication.run(Application.class, args);
}

@Autowired
private DataSource datasource;

}

application.properties

• spring.datasource.url=jdbc:oracle:XXX:@XXX:XXX/XXX
• spring.datasource.username=XXX
• spring.datasource.password=XXX
• spring.datasource.driver-class-name=oracle.jdbc.driver.OracleDriver

application.yml

• spring:

  • profiles:
  • active: "dev"
  • main:

    - banner-mode: "off"

• spring:

  • profiles: dev
  • datasource:
    • url:jdbc:oracle:XXX:@XXX:XXX/XXX
    • username:XXX
    • password:XXX
    • driver-class-name:oracle.jdbc.driver.OracleDriver

When we are adding data source information as properties file the application working as expected. But information as YAML means showing below error.

ERROR

Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'testapplication': Unsatisfied dependency expressed through field '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/DataSourceConfiguration$Tomcat.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.tomcat.jdbc.pool.DataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Cannot determine embedded database driver class for database type NONE. If you want an embedded database please put a supported one on the classpath. If you have database settings to be loaded from a particular profile you may need to active it (the profiles "dev" are currently active).