Automatically created java.inject.Provider cannot be injected into session scoped beans [SPR-9845]

[spring-projects-issues]

Ivan Sopov opened SPR-9845 and commented

If I inject javax.inject.Provider for creating prototype scoped beans into session scoped beans it fails when creating second session:

2012-10-01 18:45:50.113:WARN::/pins/default
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionBeanWithDefaultProvider': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.inject.Provider com.sopovs.moradanen.SessionBeanWithDefaultProvider.prototypePojoProvider; nested exception is java.lang.IllegalArgumentException: Can not set javax.inject.Provider field com.sopovs.moradanen.SessionBeanWithDefaultProvider.prototypePojoProvider to com.sopovs.moradanen.PrototypeBean
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:287)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$2.getObject(AbstractBeanFactory.java:332)
at org.springframework.web.context.request.AbstractRequestAttributesScope.get(AbstractRequestAttributesScope.java:43)
at org.springframework.web.context.request.SessionScope.get(SessionScope.java:92)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:328)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:876)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:818)
at org.springframework.beans.factory.support.DefaultListableBeanFactory$DependencyObjectFactory.getObject(DefaultListableBeanFactory.java:1040)
at org.springframework.beans.factory.support.DefaultListableBeanFactory$DependencyProvider.get(DefaultListableBeanFactory.java:1056)
at com.sopovs.moradanen.DefaultProviderController.sayHello(DefaultProviderController.java:19)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)...

I have created sample project reproducing the issue and published it on github: https://github.com/isopov/provider-in-session-with-spring

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Affects: 3.1.2

Reference URL: https://github.com/isopov/provider-in-session-with-spring

Issue Links:

• #13819 @Inject Provider or @Autowired ObjectFactory issue with session scoped bean ("duplicates")

[spring-projects-issues]

Ivan Sopov commented

As a workaround it is possible to define custom singleton that contains injected Provider and inject this singleton into session scoped beans. This workaround is illustrated on github.