Java Hibernate：迁移到5.2.14，NPE
我将当前的5.1 hibernate设置迁移到新的5.2.14。我在上下文初始化期间获得NPE：Java Hibernate：迁移到5.2.14，NPE,java,spring,hibernate,sessionfactory,Java,Spring,Hibernate,Sessionfactory,我将当前的5.1 hibernate设置迁移到新的5.2.14。我在上下文初始化期间获得NPE： org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'carFactory': Unsatisfied dependency expressed through field 'makeDao'; nested exception is org.springfra
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'carFactory': Unsatisfied dependency expressed through field 'makeDao'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'makeDAOImpl': Unsatisfied dependency expressed through field 'databaseUtilities'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'databaseUtilities': Unsatisfied dependency expressed through field 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in com.migration.core.config.HibernateConfiguration: Invocation of init method failed; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:587)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:91)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:373)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1344)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:760)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:868)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:409)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:291)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:103)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4861)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5322)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'makeDAOImpl': Unsatisfied dependency expressed through field 'databaseUtilities'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'databaseUtilities': Unsatisfied dependency expressed through field 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in com.migration.core.config.HibernateConfiguration: Invocation of init method failed; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:587)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:91)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:373)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1344)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:251)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1065)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:584)
... 24 more
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'databaseUtilities': Unsatisfied dependency expressed through field 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in com.migration.core.config.HibernateConfiguration: Invocation of init method failed; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:587)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:91)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:373)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1344)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:251)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1065)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:584)
... 37 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in com.migration.core.config.HibernateConfiguration: Invocation of init method failed; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1710)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:583)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:251)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1065)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:584)
... 50 more
Caused by: java.lang.NullPointerException
at org.hibernate.metamodel.internal.AttributeFactory.getMetaModelType(AttributeFactory.java:202)
at org.hibernate.metamodel.internal.AttributeFactory.buildPluralAttribute(AttributeFactory.java:176)
at org.hibernate.metamodel.internal.AttributeFactory.buildAttribute(AttributeFactory.java:82)
at org.hibernate.metamodel.internal.MetadataContext.wrapUp(MetadataContext.java:213)
at org.hibernate.metamodel.internal.MetamodelImpl.initialize(MetamodelImpl.java:220)
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:300)
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:460)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:710)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:726)
at org.springframework.orm.hibernate5.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:535)
at org.springframework.orm.hibernate5.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:519)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1769)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1706)
... 60 more
@Repository
public class DatabaseUtilities {
static ThreadLocal<Connection> connection = new ThreadLocal<Connection>();
@Autowired private HibernateConfiguration configuration;
@Autowired private SessionFactory sessionFactory;
@Autowired private ApplicationContextProvider contextProvider;
@Autowired private SequencesDAO sequencesDao;
@Autowired private LanguageFactory languages;
// get connection for further use
public Connection getConnection() {
if (connection.get() == null) {
try {
//loading the database driver
configuration.dataSource().getConnection();
} catch (SQLException e) {
//do something to deal with the error of missing database driver e.g notification to the user.
e.printStackTrace();
}
SessionImplementor session = (SessionImplementor)sessionFactory.openSession();
connection.set(session.connection());
}
return connection.get();
}
// get sessionFactory's configuration
public Configuration getSessionFactoryConfiguration() {
ApplicationContext context = contextProvider.getApplicationContext();
LocalSessionFactoryBean sessionFactoryBean = context.getBean("&sessionFactory",LocalSessionFactoryBean.class);
return sessionFactoryBean.getConfiguration();
}
/**
* Returns a sequence NEXTVAL value
* @param seqName
* @return NEXTVAL value
*/
public long getSequenceNextval( String seqName ) {
return sequencesDao.getNext(seqName);
}
/**
* Returns Hibernate sessionFactory bean
* @return SessionFactory
*/
public SessionFactory getSessionFactory() {
return this.sessionFactory;
}
/**
* Returns session from the session factory
*/
public Session getSession() {
return getSessionFactory().openSession();
}
/**
* Clears current session
*/
public void clearSession( Session session ) {
session.clear();
}
/**
* Closes current session
*/
public void closeSession( Session session ) {
session.close();
}
/**
* Extracts and converts meta data from the Hibernate's PersistentEntity
* @param list
* @return entity
*/
public List<? extends Entity<Long>> convertMetaData(List<? extends Entity<Long>> list) {
List<Language> languagesList = languages.getList();
list.forEach(entity->{
Map<Language, EntityMetaData> metaData = new HashMap<>();
// Copy the original package items into the key set
for (Language key : entity.getMetaData().keySet()) {
int keyIndex = languagesList.indexOf(key);
if (keyIndex > -1) {
metaData.put(languagesList.get(keyIndex), entity.getMetaData().get(key));
}
}
entity.setMetaData(metaData);
});
return list;
}
/**
* Converts meta data into the HashMap from the PersistentMap
* @param <T>
* @param <T>
* @param metaData
* @return HashMap
*/
@SuppressWarnings("unchecked")
public <T> Map<Language,EntityMetaData> convertMetaData( T entity ) {
List<Language> languagesList = languages.getList();
Map<Language, EntityMetaData> metaData = new HashMap<>();
// Copy the original package items into the key set
for (Language key : ((Entity<Long>) entity).getMetaData().keySet()) {
int keyIndex = languagesList.indexOf(key);
if (keyIndex > -1) {
if( ((Entity<Long>) entity).getMetaData().size() > 0 ) {
metaData.put(languagesList.get(keyIndex), ((Entity<Long>) entity).getMetaData().get(key));
} else {
metaData.put(languagesList.get(keyIndex), new EntityMetaData());
}
}
}
return metaData;
}
public ReturningWork<Long> callStoredProcedure(Supplier<String> query) {
ReturningWork<Long> work = ((Connection connection)->{
try( PreparedStatement preparedStatement = connection.prepareStatement(query.get());
ResultSet resultSet = preparedStatement.executeQuery(); ) {
connection.commit();
resultSet.next();
return resultSet.getLong(1);
} catch( SQLException e ) {
throw e;
}
});
return work;
}
@PostConstruct
public void setupSessionFactory() throws Exception {
// A SessionFactory is set up once for an application!
final StandardServiceRegistry registry = new StandardServiceRegistryBuilder()
.configure()
.build();
try {
sessionFactory = new MetadataSources( registry ).buildMetadata().buildSessionFactory();
} catch (Exception e) {
// The registry would be destroyed by the SessionFactory, but we had trouble building the SessionFactory
// so destroy it manually.
StandardServiceRegistryBuilder.destroy( registry );
}
}
}
我不使用JPA，所以我不需要EntityManagerFactory——只是一个简单的SessionFactory。我还希望避免使用XML进行配置。我的新实现有什么问题？将sessionFactory方法更改为：
@Bean
public SessionFactory sessionFactory() {
LocalSessionFactoryBean localSessionFactoryBean = new LocalSessionFactoryBean();
localSessionFactoryBean.setDataSource(dataSource());
localSessionFactoryBean.setPackagesToScan(new String[] { "com.migration.core.domain.*" });
localSessionFactoryBean.setMappingLocations(loadResources());
localSessionFactoryBean.setHibernateProperties(hibernateProperties());
return localSessionFactoryBean.getObject(); // here is the important change
}
@Bean
public SessionFactory sessionFactory() {
return new LocalSessionFactoryBuilder(dataSource())
.scanPackages("com.example.entities")
//.addFile() this should work for your xml files
.buildSessionFactory();
}
祝您好运。您是否尝试将@Repository更改为@Component？？？不幸的是，同样的问题。
@Bean
public SessionFactory sessionFactory() {
LocalSessionFactoryBean localSessionFactoryBean = new LocalSessionFactoryBean();
localSessionFactoryBean.setDataSource(dataSource());
localSessionFactoryBean.setPackagesToScan(new String[] { "com.migration.core.domain.*" });
localSessionFactoryBean.setMappingLocations(loadResources());
localSessionFactoryBean.setHibernateProperties(hibernateProperties());
return localSessionFactoryBean.getObject(); // here is the important change
}
@Bean
public SessionFactory sessionFactory() {
return new LocalSessionFactoryBuilder(dataSource())
.scanPackages("com.example.entities")
//.addFile() this should work for your xml files
.buildSessionFactory();
}