Comments on: Customizing Annotation Configuration and Component Detection in Spring 2.1

by: tom

Fri, 27 Jun 2008 02:30:54 +0000

[…] former peeps over at Yahoo just released 10 more components, 3 Flash and 5 Flex components. The also fixed some of the bugs […]

by: SpringSource Team Blog » Spring Dependency Injection & Java 5 (including slides and code)

Tue, 18 Mar 2008 16:15:58 +0000

[…] Customizing Annotation Configuration and Component Detection in Spring 2.5 by Mark Fisher […]

by: Interface21 Team Blog » ASM version incompatibilities, using Spring @Autowired with Hibernate

Thu, 18 Oct 2007 17:35:13 +0000

[…] Posted on June 11th, 2007 by Alef Arendsen in Spring, 2.0, Data Access, IOC Container, 2.5/2.1. I was working on Spring 2.1 stuff this week with Joris. We were preparing a sample using all three ways of doing dependency injection. The sample does not only highlight dependency injection, but also features a back-end based on Hibernate. […]

by: Caleb

Mon, 16 Jul 2007 14:52:43 +0000

Thanks for the walkthrough — this post and its predecessor have been very helpful in understanding the new annotation-based configuration options, the growth of which I have been excited to see!

I have a quick comment and a question. First, the question: Will there be a way of configuring factory beans using annotations, or is there a way of doing so already that I am simply too dense to realize? As I understand it, currently the only way to specify a factory method is through the XML configuration.

Now, the comment: I was surprised to read about your thought process in determining whether or not to include a way of configuring a bean's scope via an annotation. Certainly, the argument that a bean's scope should be a deployment-level configuration item is valid. However, most of us using Spring in our day-to-day development are constantly striking a balance between doing the "right" thing and doing the rapid thing. While a scope annotation breaches the separation of deployment description from bean description, in many cases a bean will only ever live in one scope, and there is a considerable benefit in convenience gained from having all of a bean's configuration specified right there in the source. Additionally, the Spring developers, it seems to me, have always championed choice and flexibility over proscription and rigidity, so I was very glad to see the introduction of the @Scope annotation.

Thanks for providing such a valuable framework. Spring rocks, and your continued dedication to flexibility will make Spring 2.1 rock even harder!

by: Bobby Quinne

Wed, 13 Jun 2007 06:11:02 +0000

I am currently trying to code a dao :

@Repository(value="dao.my")
public class MyDao extends HibernateDaoSupport implements IMyDao
{
}

however at runtime I receive the following exception. Any ideas? Have I left something out? :

Unable to return specified BeanFactory instance: factory key [com.my], from group with resource name [classpath*:beanRefFactory.xml]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.my' defined in URL [file:/home/lore/development/projects/mainline/source/server/gen/spring/beanRefFactory.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.context.support.ClassPathXmlApplicationContext]: Constructor threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dao.configuration': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: 'sessionFactory' or 'hibernateTemplate' is required
org.springframework.beans.factory.access.BootstrapException: Unable to return specified BeanFactory instance: factory key [com.tradecraft.demerol], from group with resource name [classpath*:beanRefFactory.xml]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.my' defined in URL [file:/home/lore/development/projects/mainline/source/server/gen/spring/beanRefFactory.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.context.support.ClassPathXmlApplicationContext]: Constructor threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dao.my': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: 'sessionFactory' or 'hibernateTemplate' is required
at org.springframework.beans.factory.access.SingletonBeanFactoryLocator.useBeanFactory(SingletonBeanFactoryLocator.java:405)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.my' defined in URL [file:/home/lore/development/projects/mainline/source/server/gen/spring/beanRefFactory.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.context.support.ClassPathXmlApplicationContext]: Constructor threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dao.my': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: 'sessionFactory' or 'hibernateTemplate' is required
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:430)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:255)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:156)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:252)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
at org.springframework.beans.factory.access.SingletonBeanFactoryLocator.useBeanFactory(SingletonBeanFactoryLocator.java:395)
Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.context.support.ClassPathXmlApplicationContext]: Constructor threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dao.configuration': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: 'sessionFactory' or 'hibernateTemplate' is required
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:98)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:87)
at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:178)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:781)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:699)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:386)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dao.configuration': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: 'sessionFactory' or 'hibernateTemplate' is required
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1178)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:407)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:255)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:156)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:252)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:287)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:689)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:358)
at org.springframework.context.support.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:91)
at org.springframework.context.support.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:75)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:83)
Caused by: java.lang.IllegalArgumentException: 'sessionFactory' or 'hibernateTemplate' is required
at org.springframework.orm.hibernate3.support.HibernateDaoSupport.checkDaoConfig(HibernateDaoSupport.java:115)
at org.springframework.dao.support.DaoSupport.afterPropertiesSet(DaoSupport.java:44)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1205)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1175)

by: Bhavin Kamani

Sun, 10 Jun 2007 10:09:34 +0000

Guess my cofig xml file does not appear in my blog. Reposting it with CDATA tag hopefully it shd work. --> ]]>

by: Bhavin Kamani

Sun, 10 Jun 2007 10:02:44 +0000

I have 2 questions. Whats the difference between Repository and Component.

Also, I am having trouble using Repository annotation for my App. When I try using its throwing an exception. Here's the code, config file and the stack Trace. All I could figure out is that it happens during component scan.

public interface FormDataService {

public FormData save(FormData formData);

}

@Repository
public class FormDataDAO extends JpaDaoSupport implements FormDataService {

private static final Log logger = LogFactory.getLog(FormDataDAO.class);

public FormData save(FormData formData) {
if (formData.getId()==0) {
getJpaTemplate().persist(formData);
logger.info("Generated ID: " formData.getId());
} else {
getJpaTemplate().merge(formData);
}
return formData;
}

}

–>

org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from class path resource [spring-context.xml]; nested exception is java.lang.AbstractMethodError: org.springframework.core.type.asm.AnnotationMetadataReadingVisitor.visit(IILjava/lang/String;Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;)V
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:375)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:303)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:280)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:142)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:158)
at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:184)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at org.springframework.test.jpa.AbstractJpaTests.runBare(AbstractJpaTests.java:209)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:40)
Caused by: java.lang.AbstractMethodError: org.springframework.core.type.asm.AnnotationMetadataReadingVisitor.visit(IILjava/lang/String;Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;)V
at org.objectweb.asm.ClassReader.accept(Unknown Source)
at org.objectweb.asm.ClassReader.accept(Unknown Source)
at org.springframework.core.type.filter.AnnotationTypeFilter.matchSelf(AnnotationTypeFilter.java:53)
at org.springframework.core.type.filter.AbstractTypeHierarchyTraversingFilter.match(AbstractTypeHierarchyTraversingFilter.java:54)
at org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider.isCandidateComponent(ClassPathScanningCandidateComponentProvider.java:183)
at org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider.getClassReaderIfCandidate(ClassPathScanningCandidateComponentProvider.java:166)
at org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider.findCandidateComponents(ClassPathScanningCandidateComponentProvider.java:148)
at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.doScan(ClassPathBeanDefinitionScanner.java:160)
at org.springframework.context.annotation.ComponentScanBeanDefinitionParser.parse(ComponentScanBeanDefinitionParser.java:145)
at org.springframework.beans.factory.xml.NamespaceHandlerSupport.parse(NamespaceHandlerSupport.java:69)
at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1114)
at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1104)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:133)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:90)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:458)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:353)
… 24 more

by: Revue de Presse Xebia par J2EE, Agilité et SOA : Le blog de Xebia France

Mon, 04 Jun 2007 13:44:51 +0000

[…] Customizing Annotation Configuration and Component Detection in Spring 2.1 […]

by: Jose Noheda

Wed, 30 May 2007 11:35:04 +0000

Having the @Resource annotation clarifies things IMO. The DI is simpler. I would need to toy a little with aspects, scopes and proxies but so far so good. Just one thing…why have you named it @Component when @Bean fits so nicely? It's driving me crazy

by: tony

Tue, 29 May 2007 15:45:15 +0000

Your this article is very good