spring-boot application without a datasource - spring-boot

Question

Is it possible to create a spring-boot application that has NO datasource? In my case i just need a simple REST app but it seems on start up that there is an attempt to auto initialise a datasource
My pom.xml is
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>a.b.c.d.test</groupId>
<artifactId>rest-customer-builder</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>rest-customer-builder</name>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.2.5.RELEASE</version>
<!--<relativePath/> lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.7</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
My application.properties is
server.contextPath=/rest-customer-builder
server.port=9090
When i run
mvn clean install spring-boot:run
i see this error
015-08-18 14:54:31.870 INFO 12530 --- [lication.main()] f.a.AutowiredAnnotationBeanPostProcessor : JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
2015-08-18 14:54:31.903 WARN 12530 --- [lication.main()] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor': Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: org/apache/geronimo/osgi/locator/ProviderLocator
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:199)
at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:615)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:465)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:957)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:946)
at com.bearingpoint.eircom.test.rest.customerbuilder.RestCustomerBuilderApplication.main(RestCustomerBuilderApplication.java:12)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.boot.maven.RunMojo$LaunchRunner.run(RunMojo.java:418)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NoClassDefFoundError: org/apache/geronimo/osgi/locator/ProviderLocator
at javax.validation.Validation$DefaultValidationProviderResolver.getValidationProviders(Validation.java:209)
at javax.validation.Validation$GenericBootstrapImpl.configure(Validation.java:173)
at org.springframework.validation.beanvalidation.LocalValidatorFactoryBean.afterPropertiesSet(LocalValidatorFactoryBean.java:223)
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor$Jsr303ValidatorFactory.run(ConfigurationPropertiesBindingPostProcessor.java:381)
at org.springframework.boot.context.properties.ConfigurationPropertiesBindingPostProcessor.afterPropertiesSet(ConfigurationPropertiesBindingPostProcessor.java:174)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1633)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1570)
... 21 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.apache.geronimo.osgi.locator.ProviderLocator
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)

Answer 1

It is possible to run a spring boot application without datasource.
You must disable the auto configuration for the datasource and may be for JPA also :
#EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class,HibernateJpaAutoConfiguration.class})
The exception you posted is something else, as written in the comments, you have something in the classpath that references the missing class of apache geronimo.
So you must get rid of the code/jar that references geronimo or add geronimo to your dependencies.

Answer 2

A better way to fix this point will be to remove the dependencies from your POM/Gradle configuration file and Spring Boot will not try to auto configure the DataSource.

Answer 3

#Stefan +1
If you are using YAML file for configuration this is how it is
spring:
profiles: dev
autoconfigure:
exclude:
- org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration
- org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration
It worked perfectly fine for me.

Answer 4

I had this issue, Once I have removed below dependency it started working.
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>

Answer 5

as for Spring Boot current version (2.5.4) you can put it on the #SpringBootApplication annotation
like that:
#SpringBootApplication(exclude = {DataSourceAutoConfiguration.class, HibernateJpaAutoConfiguration.class})
public class YourApplication {
public static void main(String[] args) {
SpringApplication.run(YourApplication.class, args);
}

Answer 6

Basically I did the same thing as #Rocky wrote above in .properties file and it works.
spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration,org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration

Answer 7

Provide spring.datasource.url in the application.properties file. It worked for me.
Example:
spring.datasource.url=jdbc:mysql://localhost/Test_DB