[英]org.springframework.beans.factory.BeanCreationException: Error creating bean
I am creating spring mvc project in eclipse along with using hibernate having following details: 我将在eclipse中创建spring mvc项目以及使用具有以下详细信息的hibernate:
Error 错误
org.apache.catalina.core.StandardContext.listenerStart Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'springRestController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.ipl.services.UserScoreService com.ipl.controller.SpringRestController.userScoreService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userScoreServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.ipl.dao.UserScoreDao com.ipl.services.UserScoreServiceImpl.userScoreDao; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userScoreDaoImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: org.hibernate.SessionFactory com.ipl.dao.UserScoreDaoImpl.sessionFactory; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/mvc-dispatcher-servlet.xml]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: No identifier specified for entity: com.ipl.model.UserScore
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:292)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4738)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5181)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:945)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1798)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.ipl.services.UserScoreService com.ipl.controller.SpringRestController.userScoreService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userScoreServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.ipl.dao.UserScoreDao com.ipl.services.UserScoreServiceImpl.userScoreDao; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userScoreDaoImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: org.hibernate.SessionFactory com.ipl.dao.UserScoreDaoImpl.sessionFactory; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/mvc-dispatcher-servlet.xml]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: No identifier specified for entity: com.ipl.model.UserScore
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:508)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:289)
... 26 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userScoreServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.ipl.dao.UserScoreDao com.ipl.services.UserScoreServiceImpl.userScoreDao; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userScoreDaoImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: org.hibernate.SessionFactory com.ipl.dao.UserScoreDaoImpl.sessionFactory; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/mvc-dispatcher-servlet.xml]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: No identifier specified for entity: com.ipl.model.UserScore
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:292)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1017)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:960)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:858)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:480)
... 28 more
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.ipl.dao.UserScoreDao com.ipl.services.UserScoreServiceImpl.userScoreDao; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userScoreDaoImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: org.hibernate.SessionFactory com.ipl.dao.UserScoreDaoImpl.sessionFactory; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/mvc-dispatcher-servlet.xml]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: No identifier specified for entity: com.ipl.model.UserScore
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:508)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:289)
... 39 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userScoreDaoImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: org.hibernate.SessionFactory com.ipl.dao.UserScoreDaoImpl.sessionFactory; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/mvc-dispatcher-servlet.xml]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: No identifier specified for entity: com.ipl.model.UserScore
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:292)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1017)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:960)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:858)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:480)
... 41 more
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: org.hibernate.SessionFactory com.ipl.dao.UserScoreDaoImpl.sessionFactory; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/mvc-dispatcher-servlet.xml]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: No identifier specified for entity: com.ipl.model.UserScore
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:508)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:289)
... 52 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/mvc-dispatcher-servlet.xml]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: No identifier specified for entity: com.ipl.model.UserScore
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1553)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1017)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:960)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:858)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:480)
... 54 more
Caused by: org.hibernate.AnnotationException: No identifier specified for entity: com.ipl.model.UserScore
at org.hibernate.cfg.InheritanceState.determineDefaultAccessType(InheritanceState.java:277)
at org.hibernate.cfg.InheritanceState.getElementsToProcess(InheritanceState.java:224)
at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:775)
at org.hibernate.cfg.Configuration$MetadataSourceQueue.processAnnotatedClassesQueue(Configuration.java:3788)
at org.hibernate.cfg.Configuration$MetadataSourceQueue.processMetadata(Configuration.java:3742)
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1410)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1844)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1928)
at org.springframework.orm.hibernate4.LocalSessionFactoryBuilder.buildSessionFactory(LocalSessionFactoryBuilder.java:343)
at org.springframework.orm.hibernate4.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:431)
at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:416)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1612)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1549)
... 64 more
**mvc-dispatcher-servlet.xml**
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:util="http://www.springframework.org/schema/util" xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd">
<context:component-scan base-package="com.ipl" />
<mvc:annotation-driven />
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/ipl" />
<property name="username" value="root" />
<property name="password" value="admin" />
</bean>
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/jsp/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="annotatedClasses">
<list>
<value>com.ipl.model.UserScore</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
</props>
</property>
</bean>
<bean id="txManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<!--<bean id="UserScoreDao" class="com.ipl.dao.UserScoreDaoImpl"></bean>
<bean id="UserScoreService" class="com.ipl.services.UserScoreServiceImpl"></bean>-->
<bean id="persistenceExceptionTranslationPostProcessor"
class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor" />
<bean id="UserScoreDao" class="com.ipl.dao.UserScoreDaoImpl"></bean>
<bean id="UserScoreService" class="com.ipl.services.UserScoreServiceImpl"></bean>
</beans>
**UserScoreDaoImpl.java**
package com.ipl.dao;
import java.util.List;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import com.ipl.model.UserScore;
@Component
public class UserScoreDaoImpl implements UserScoreDao{
@Autowired
SessionFactory sessionFactory;
Session session = null;
Transaction tx = null;
@SuppressWarnings("unchecked")
@Override
public List getEntityList() throws Exception {
session = sessionFactory.openSession();
tx = session.beginTransaction();
List userScoreList = session.createCriteria(UserScore.class)
.list();
tx.commit();
session.close();
return userScoreList;
}
}
**UserScoreDao.java**
package com.ipl.dao;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import com.ipl.model.UserScore;
public interface UserScoreDao {
public List getEntityList() throws Exception;
}
UserScoreService.java :
package com.ipl.services;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import com.ipl.model.UserScore;;
public interface UserScoreService {
public List getEntityList() throws Exception;
}
**UserScoreServiceImpl.java**
package com.ipl.services;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import com.ipl.dao.UserScoreDao;
import com.ipl.model.UserScore;
public class UserScoreServiceImpl implements UserScoreService{
@Autowired
UserScoreDao userScoreDao;
@Override
public List getEntityList() throws Exception {
return userScoreDao.getEntityList();
}
}
But when i try to run the project i am getting the error "org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'RestController'" 但是,当我尝试运行项目时,出现错误“ org.springframework.beans.factory.BeanCreationException:创建名称为'RestController'的bean时出错”
The error message is clear: 错误消息很清楚:
No identifier specified for entity: com.ipl.model.UserScore
Without seeing your model it seems you have not specified a field annotated with @Id
at your UserScore
entity. 没有看到您的模型,似乎您没有在
UserScore
实体中指定带有@Id
注释的字段。 Each @Entity
needs an @Id
, representing the primary key in the database. 每个
@Entity
需要一个@Id
,代表数据库中的主键。
You have marked UserScore
as an annotated class: 您已将
UserScore
标记为带注释的类:
<property name="annotatedClasses">
<list>
<value>com.ipl.model.UserScore</value>
</list>
</property>
And based on this: 并基于此:
List userScoreList = session.createCriteria(UserScore.class).list();
it is clear you are using UserScore
to get data from the DB via hibernate, so it does not matter whether it is your view. 很明显,您正在使用
UserScore
通过hibernate从数据库获取数据,因此无论您是视图还是无关紧要的。 To hibernate it has to be an Entity. 要使其休眠,它必须是一个实体。 You need to annotate that bean with
@Entity
(easier than use xml configuration) and mark the field matching the primary key with @Id
. 您需要使用
@Entity
注释该bean(比使用xml配置更容易),并使用@Id
标记与主键匹配的字段。
Marking a POJO as persistent entity 将POJO标记为持久实体
An example: 一个例子:
since you have defined a UserScoreDao bean in the xml context like this: 因为您已经在xml上下文中定义了UserScoreDao bean,如下所示:
<bean id="UserScoreDao" class="com.ipl.dao.UserScoreDaoImpl"></bean>
At the same time, the UserScoreDaoImpl is annotated with @Component which means there will be another UserScoreDao bean in the application context and the name will be userScoreDaoImpl . 同时,UserScoreDaoImpl用@Component注释,这意味着在应用程序上下文中将有另一个UserScoreDao bean,名称将是userScoreDaoImpl 。
As a result, you have two UserScoreDao beans in your application context. 结果,您的应用程序上下文中有两个UserScoreDao Bean。 Spring doesn't know which one it should wire to the ** UserScoreServiceImpl** bean.
Spring不知道应该将哪一个连接到** UserScoreServiceImpl ** bean。
Maybe you can try removing the bean declaration in the xml file by comment it: 也许您可以尝试通过注释删除xml文件中的bean声明:
<bean id="persistenceExceptionTranslationPostProcessor"
class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor" />
<!--<bean id="UserScoreDao" class="com.ipl.dao.UserScoreDaoImpl"></bean>
<bean id="UserScoreService" class="com.ipl.services.UserScoreServiceImpl"></bean>
<bean id="UserScoreDao" class="com.ipl.dao.UserScoreDaoImpl"></bean>
<bean id="UserScoreService" class="com.ipl.services.UserScoreServiceImpl"></bean>-->
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