Spring #ComponentScan isn't picked up, maybe due to #EnableAutoConfiguration in #SpringBootApplication? - spring

Question

i'm new to SpringBoot and am currently reaching to understand the base functionality for a spring application with hibernate.
I have a package com.yyyyyyyyyyy.coaching and if I put all #Entity definitions there the app runs successfully. I was happy to get up and running quick.
Now I moved one entity to com.yyyyyyyyyyy.i18n.bo since it should later be used elsewhere and hibernate throws the following error:
Caused by: org.hibernate.AnnotationException: #OneToOne or #ManyToOne on com.yyyyyyyyyyy.coaching.bo.Topic.descriptionStrings references an unknown entity: com.yyyyyyyyyyy.i18n.bo.Localized
(see below for the full --debug application startup)
I understand that #ComponentScan should be used to specify which packages are scanned for annotations.
I have double checked that javax.persistence.Entity is used everywhere and not the one from the hibernate package.
Here is my program entry point:
#SpringBootApplication(scanBasePackages={"com.yyyyyyyyyyy"})
//#Configuration
//#ComponentScan(basePackages={"com.yyyyyyyyyyy.coaching", "com.yyyyyyyyyyy.i18n"})
#Import(AppConfig.class)
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
It doesn't find the Entity with scanBasePackages, with ComponentScan on the main class and also when using #Import and another config class "AppConfig". I also tried to use the ApplicationBuilder instead of SpringApplication like this new SpringApplicationBuilder().sources(AppConfig.class).main(DemoApplication.class).run(args); but to no avail.
What I can see from the debug output is the line:
2015-11-18 08:08:48.407 DEBUG 13780 --- [ main] o.s.b.a.AutoConfigurationPackages : #EnableAutoConfiguration was declared on a class in the package 'com.yyyyyyyyyyy.coaching'. Automatic #Repository and #Entity scanning is enabled.
I suppose this doesn't hurt as it comes from the #SpringBootApplication annotation
The AppConfig class doesn't seem to be included either, as I added debug output which isn't printed.
#Configuration
//#Profile("production")
#ComponentScan(basePackages={"com.yyyyyyyyyyy.coaching", "com.yyyyyyyyyyy.i18n"})
public class AppConfig {
public AppConfig() {
System.out.println("------------------------------Init AppConfig-------------------------");
}
#PostConstruct
public void doSomething() {
System.out.println("------------------------------Done AppConfig-------------------------");
}
}
Any help/ideas on this?
Thanks.
Edit, prj structure:
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.3.0.RELEASE)
2015-11-18 08:08:47.048 INFO 13780 --- [ main] c.yyyyyyyyyyy.coaching.DemoApplication : Starting DemoApplication on Suse with PID 13780 (started by Klaus in C:\Users\Klaus\Downloads\demo (1)\demo)
2015-11-18 08:08:47.051 INFO 13780 --- [ main] c.yyyyyyyyyyy.coaching.DemoApplication : No profiles are active
2015-11-18 08:08:47.051 DEBUG 13780 --- [ main] o.s.boot.SpringApplication : Loading source class com.yyyyyyyyyyy.coaching.DemoApplication
2015-11-18 08:08:47.098 DEBUG 13780 --- [ main] o.s.b.c.c.ConfigFileApplicationListener : Loaded config file 'classpath:/application.properties'
2015-11-18 08:08:47.098 DEBUG 13780 --- [ main] o.s.b.c.c.ConfigFileApplicationListener : Skipped (empty) config file 'classpath:/application.properties' for profile default
2015-11-18 08:08:47.103 INFO 13780 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext#1fc32e4f: startup date [Wed Nov 18 08:08:47 CET 2015]; root of context hierarchy
2015-11-18 08:08:47.106 DEBUG 13780 --- [ main] ationConfigEmbeddedWebApplicationContext : Bean factory for org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext#1fc32e4f: org.springframework.beans.factory.support.DefaultListableBeanFactory#7a1a3478: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalPersistenceAnnotationProcessor,org.springframework.context.event.internalEventListenerProcessor,org.springframework.context.event.internalEventListenerFactory,demoApplication]; root of factory hierarchy
2015-11-18 08:08:48.286 INFO 13780 --- [ main] o.s.b.f.s.DefaultListableBeanFactory : Overriding bean definition for bean 'beanNameViewResolver' with a different definition: replacing [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.web.ErrorMvcAutoConfiguration$WhitelabelErrorViewConfiguration; factoryMethodName=beanNameViewResolver; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/ErrorMvcAutoConfiguration$WhitelabelErrorViewConfiguration.class]] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter; factoryMethodName=beanNameViewResolver; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter.class]]
2015-11-18 08:08:48.407 DEBUG 13780 --- [ main] o.s.b.a.AutoConfigurationPackages : #EnableAutoConfiguration was declared on a class in the package 'com.yyyyyyyyyyy.coaching'. Automatic #Repository and #Entity scanning is enabled.
2015-11-18 08:08:48.995 INFO 13780 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [class org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$4e01ef7c] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2015-11-18 08:08:49.038 DEBUG 13780 --- [ main] ationConfigEmbeddedWebApplicationContext : Unable to locate MessageSource with name 'messageSource': using default [org.springframework.context.support.DelegatingMessageSource#2e17a321]
2015-11-18 08:08:49.038 DEBUG 13780 --- [ main] ationConfigEmbeddedWebApplicationContext : Using ApplicationEventMulticaster [org.springframework.context.event.SimpleApplicationEventMulticaster#521bb1a4]
2015-11-18 08:08:49.368 DEBUG 13780 --- [ main] .t.TomcatEmbeddedServletContainerFactory : Code archive: C:\Users\Klaus\.m2\repository\org\springframework\boot\spring-boot\1.3.0.RELEASE\spring-boot-1.3.0.RELEASE.jar
2015-11-18 08:08:49.369 DEBUG 13780 --- [ main] .t.TomcatEmbeddedServletContainerFactory : Code archive: C:\Users\Klaus\.m2\repository\org\springframework\boot\spring-boot\1.3.0.RELEASE\spring-boot-1.3.0.RELEASE.jar
2015-11-18 08:08:49.369 DEBUG 13780 --- [ main] .t.TomcatEmbeddedServletContainerFactory : None of the document roots [src/main/webapp, public, static] point to a directory and will be ignored.
2015-11-18 08:08:49.419 INFO 13780 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2015-11-18 08:08:49.433 INFO 13780 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2015-11-18 08:08:49.434 INFO 13780 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.0.28
2015-11-18 08:08:49.566 INFO 13780 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2015-11-18 08:08:49.566 INFO 13780 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 2467 ms
[..]
2015-11-18 08:08:49.960 INFO 13780 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2015-11-18 08:08:49.960 INFO 13780 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2015-11-18 08:08:49.961 INFO 13780 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2015-11-18 08:08:49.961 INFO 13780 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2015-11-18 08:08:49.982 DEBUG 13780 --- [ost-startStop-1] o.s.b.c.web.OrderedRequestContextFilter : Initializing filter 'requestContextFilter'
2015-11-18 08:08:49.984 DEBUG 13780 --- [ost-startStop-1] o.s.b.c.web.OrderedRequestContextFilter : Filter 'requestContextFilter' configured successfully
2015-11-18 08:08:49.985 DEBUG 13780 --- [ost-startStop-1] .s.b.c.w.OrderedHttpPutFormContentFilter : Initializing filter 'httpPutFormContentFilter'
2015-11-18 08:08:49.985 DEBUG 13780 --- [ost-startStop-1] .s.b.c.w.OrderedHttpPutFormContentFilter : Filter 'httpPutFormContentFilter' configured successfully
2015-11-18 08:08:49.985 DEBUG 13780 --- [ost-startStop-1] o.s.b.c.w.OrderedHiddenHttpMethodFilter : Initializing filter 'hiddenHttpMethodFilter'
2015-11-18 08:08:49.985 DEBUG 13780 --- [ost-startStop-1] o.s.b.c.w.OrderedHiddenHttpMethodFilter : Filter 'hiddenHttpMethodFilter' configured successfully
2015-11-18 08:08:49.985 DEBUG 13780 --- [ost-startStop-1] o.s.b.c.w.OrderedCharacterEncodingFilter : Initializing filter 'characterEncodingFilter'
2015-11-18 08:08:49.985 DEBUG 13780 --- [ost-startStop-1] o.s.b.c.w.OrderedCharacterEncodingFilter : Filter 'characterEncodingFilter' configured successfully
2015-11-18 08:08:50.825 INFO 13780 --- [ main] liquibase : Successfully acquired change log lock
2015-11-18 08:08:50.917 INFO 13780 --- [ main] liquibase : Reading from broadleaf.DATABASECHANGELOG
2015-11-18 08:08:50.926 INFO 13780 --- [ main] liquibase : Successfully released change log lock
2015-11-18 08:08:51.116 INFO 13780 --- [ main] j.LocalContainerEntityManagerFactoryBean : Building JPA container EntityManagerFactory for persistence unit 'default'
2015-11-18 08:08:51.128 INFO 13780 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [
name: default
...]
2015-11-18 08:08:51.210 INFO 13780 --- [ main] org.hibernate.Version : HHH000412: Hibernate Core {4.3.11.Final}
2015-11-18 08:08:51.211 INFO 13780 --- [ main] org.hibernate.cfg.Environment : HHH000206: hibernate.properties not found
2015-11-18 08:08:51.214 INFO 13780 --- [ main] org.hibernate.cfg.Environment : HHH000021: Bytecode provider name : javassist
2015-11-18 08:08:51.394 INFO 13780 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {4.0.5.Final}
2015-11-18 08:08:51.441 INFO 13780 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.MySQL5Dialect
2015-11-18 08:08:51.557 WARN 13780 --- [ main] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory
2015-11-18 08:08:51.567 INFO 13780 --- [ main] o.apache.catalina.core.StandardService : Stopping service Tomcat
2015-11-18 08:08:51.574 INFO 13780 --- [ main] .b.l.ClasspathLoggingApplicationListener : Application failed to start with classpath: [ ...
2015-11-18 08:08:51.578 ERROR 13780 --- [ main] o.s.boot.SpringApplication : Application startup failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1578) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1051) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:828) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:537) ~[spring-context-4.2.3.RELEASE.jar:4.2.3.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118) ~[spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:752) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.SpringApplication.doRun(SpringApplication.java:347) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:295) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1112) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1101) [spring-boot-1.3.0.RELEASE.jar:1.3.0.RELEASE]
at com.yyyyyyyyyyy.coaching.DemoApplication.main(DemoApplication.java:23) [classes/:na]
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.persistenceException(EntityManagerFactoryBuilderImpl.java:1249) ~[hibernate-entitymanager-4.3.11.Final.jar:4.3.11.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.access$600(EntityManagerFactoryBuilderImpl.java:120) ~[hibernate-entitymanager-4.3.11.Final.jar:4.3.11.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:860) ~[hibernate-entitymanager-4.3.11.Final.jar:4.3.11.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:850) ~[hibernate-entitymanager-4.3.11.Final.jar:4.3.11.Final]
at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.withTccl(ClassLoaderServiceImpl.java:425) ~[hibernate-core-4.3.11.Final.jar:4.3.11.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:849) ~[hibernate-entitymanager-4.3.11.Final.jar:4.3.11.Final]
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:60) ~[spring-orm-4.2.3.RELEASE.jar:4.2.3.RELEASE]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:343) ~[spring-orm-4.2.3.RELEASE.jar:4.2.3.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:318) ~[spring-orm-4.2.3.RELEASE.jar:4.2.3.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574) ~[spring-beans-4.2.3.RELEASE.jar:4.2.3.RELEASE]
... 16 common frames omitted
Caused by: org.hibernate.AnnotationException: #OneToOne or #ManyToOne on com.yyyyyyyyyyy.coaching.bo.Topic.descriptionStrings references an unknown entity: com.yyyyyyyyyyy.i18n.bo.Localized

Answer 1

Move DemoApplication class to com.yyyyyyyyyyy package and everything should work. Everything which is in com.yyyyyyyyyyy should be picked automatically.
Check this out how spring boot recommend structuring
UPDATE:
also as you saw in the ref documentation add
add #EntityScan(basePackages={"com.yyyyyyyyyyy.coaching", "com.yyyyyyyyyyy.i18n"})to DemoApplication will work.