I have two beans like this:
<alias name="defaultProblematicBean" alias="problematicBean" />
<bean id="defaultProblematicBean"
class="com.application.ProblematicClass">
<property name="strategies" ref="problematicStrategiesList" />
</bean>
<alias name="defaultProblematicStrategiesList" alias="problematicStrategiesList" />
<util:list id="defaultProblematicStrategiesList">
<bean id="bean1" parent="defaultProblematicBean"
class="com.application.ProblematicClass$ProblematicInnerClass1" />
<bean id="bean2" parent="defaultProblematicBean"
class="com.application.ProblematicClass$ProblematicInnerClass2" />
</util:list>Please note: ProblematicInnerClass1 and ProblematicInnerClass2 are static inner classes inside of ProblematicClass that extend from ProblematicClass.
When I try to start the context, spring throws the following summarized error:
Initialization of bean failed; nested exception is org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type 'jdk.proxy4.$Proxy363 implementing java.util.List' to required type 'java.util.List' for property 'strategies'; nested exception is java.lang.IllegalStateException: Singleton instance not initialized yet
Note: This works fine with 5.3.27 but fails with 5.3.29, we noticed that some changes were made to ObjectUtils.nullSafeConciseToString, which is part of the stack trace.
This is the stacktrace that contains the reference to ObjectUtils.nullSafeConciseToString
Caused by: java.lang.IllegalStateException: Singleton instance not initialized yet
at org.springframework.util.Assert.state(Assert.java:76) ~[spring-core-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.config.AbstractFactoryBean.getSingletonInstance(AbstractFactoryBean.java:188) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.config.AbstractFactoryBean.access$200(AbstractFactoryBean.java:63) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.config.AbstractFactoryBean$EarlySingletonInvocationHandler.invoke(AbstractFactoryBean.java:275) ~[spring-beans-5.3.29.jar:5.3.29]
at jdk.proxy4.$Proxy363.isEmpty(Unknown Source) ~[?:?]
at org.springframework.util.ObjectUtils.nullSafeConciseToString(ObjectUtils.java:981) ~[spring-core-5.3.29.jar:5.3.29]
at org.springframework.core.convert.ConversionFailedException.<init>(ConversionFailedException.java:52) ~[spring-core-5.3.29.jar:5.3.29]
at org.springframework.core.convert.support.ConversionUtils.invokeConverter(ConversionUtils.java:47) ~[spring-core-5.3.29.jar:5.3.29]
at org.springframework.core.convert.support.GenericConversionService.convert(GenericConversionService.java:192) ~[spring-core-5.3.29.jar:5.3.29]
at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:129) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.AbstractNestablePropertyAccessor.convertIfNecessary(AbstractNestablePropertyAccessor.java:590) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.AbstractNestablePropertyAccessor.convertForProperty(AbstractNestablePropertyAccessor.java:609) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:219) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.convertForProperty(AbstractAutowireCapableBeanFactory.java:1756) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1712) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1452) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:619) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:374) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:127) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveManagedList(BeanDefinitionValueResolver.java:428) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:173) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1707) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1452) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:619) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:330) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:113) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1707) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1452) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:619) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:330) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:113) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1707) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1452) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:619) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.29.jar:5.3.29]
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:330) ~[spring-beans-5.3.29.jar:5.3.29]
... 30 more
I have two beans like this:
Please note: ProblematicInnerClass1 and ProblematicInnerClass2 are static inner classes inside of ProblematicClass that extend from ProblematicClass.
When I try to start the context, spring throws the following summarized error:
Initialization of bean failed; nested exception is org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type 'jdk.proxy4.$Proxy363 implementing java.util.List' to required type 'java.util.List' for property 'strategies'; nested exception is java.lang.IllegalStateException: Singleton instance not initialized yet
Note: This works fine with 5.3.27 but fails with 5.3.29, we noticed that some changes were made to ObjectUtils.nullSafeConciseToString, which is part of the stack trace.
This is the stacktrace that contains the reference to ObjectUtils.nullSafeConciseToString