Весна необычная ошибка

Question

Спокойной ночи. У меня есть непонятная ошибка при инъекции объекта, и я не понимаю, что это такое и как это избежать, поиск в Интернете не дал никаких результатов, ни одно решение не помогло. Буду признателен, если вы объясните причину.

ReminderService боб

@Service("ReminderService") 
public class ReminderService implements dbService<Reminder> 
{ 
@Autowired 
private JpaReminder jpaReminder; 

@Transactional 
public List<Reminder> getAll() 
{ 
    return jpaReminder.findAll(); 
} 

@Transactional 
public Reminder get(Object id) 
{ 
    return jpaReminder.find(id); 
} 

} 

JpaReminder фасоль,

@Repository("JpaReminder") 
public class JpaReminder extends jpaDao<Reminder> 
{ 
private EntityManager em; 

/** 
* @return Возвращает entityManager 
*/ 
@Override 
protected EntityManager getEntityManager() 
{ 
    return em; 
} 

public EntityManager getEm() 
{ 
    return em; 
} 

@PersistenceContext(unitName = "TaskTracker") 
public void setEm(EntityManager em) 
{ 
    this.em = em; 
} 

} 

Трассировка стека ошибок

Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'ReminderService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.work.Spring.Dao.JpaReminder com.work.Spring.mainClass.ReminderService.jpaReminder; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'JpaReminder' defined in file [/home/qwerty/Eclipse/Spring/target/classes/com/work/Spring/Dao/JpaReminder.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.work.Spring.Dao.JpaReminder]: Constructor threw exception; nested exception is java.lang.ArrayIndexOutOfBoundsException: 1 
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$1.getObject(AbstractBeanFactory.java:294) 
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) 
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) 
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) 
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:609) 
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) 
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:469) 
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139) 
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83) 
at com.work.Spring.App.main(App.java:22) 

Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.work.Spring.Dao.JpaReminder com.work.Spring.mainClass.ReminderService.jpaReminder; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'JpaReminder' defined in file [/home/qwerty/Eclipse/Spring/target/classes/com/work/Spring/Dao/JpaReminder.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.work.Spring.Dao.JpaReminder]: Constructor threw exception; nested exception is java.lang.ArrayIndexOutOfBoundsException: 1 
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:506) 
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) 
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:284) 
... 13 more 

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'JpaReminder' defined in file [/home/qwerty/Eclipse/Spring/target/classes/com/work/Spring/Dao/JpaReminder.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.work.Spring.Dao.JpaReminder]: Constructor threw exception; nested exception is java.lang.ArrayIndexOutOfBoundsException: 1 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:997) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:943) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) 
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) 
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) 
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) 
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) 
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:876) 
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:818) 
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:735) 
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:478) 
... 15 more 

Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.work.Spring.Dao.JpaReminder]: Constructor threw exception; nested exception is java.lang.ArrayIndexOutOfBoundsException: 1 
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:162) 
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:76) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:990) 
... 26 more 

Caused by: java.lang.ArrayIndexOutOfBoundsException: 1 
at com.work.Interfaces.jpaDao.<init>(jpaDao.java:24) 
at com.work.Spring.Dao.JpaReminder.<init>(JpaReminder.java:19) 
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) 
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) 
at java.lang.reflect.Constructor.newInstance(Constructor.java:532) 
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:147) 
... 28 more 

Answer 1

От StackTrace за исключением, это очевидно, что конструктор код JpaReminder бросает java.lang.ArrayIndexOutOfBoundsException: 1.

Поскольку JpaReminder расширяет jpaDao и JpaReminder не имеет свой собственный конструктор, то jpaDao «s (или его родительского класса) конструктор является виновником

Вы можете отлаживать код и узнать больше

Answer 2

я получил аналогичное исключение в моем приложении, когда я использовал Java 8 с версией Spring менее 4. Мне пришлось либо перейти на Spring 4, либо изменить lambdas, чтобы я сделал последнее.

Это было довольно трудно понять, потому что ошибка настолько расплывчата. На самом деле ничего общего с массивами.