在4.2.5春季，Hibernate4 Session Factory没有自动装入DAO，(Hibernate4 Session Factory is not getting autowired into DAO in spring 4.2.5,)
##context.xml ##
<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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<bean id="hiberDataSource" class="org.apache.commons.dbcp2.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/DB" />
<property name="username" value="root" />
<property name="password" value="root" />
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="hiberDataSource"/>
<property name="annotatedClasses">
<list>
<value>com.basemodel.model.Ground</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<bean name="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
<context:annotation-config />
<tx:annotation-driven transaction-manager="transactionManager" />
<context:component-scan base-package="com.basemodel.dao, com.basemodel.model" />
</bean>
</beans>
## DAO类：## package com.basemodel.dao;
import java.util.ArrayList; import java.util.List; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; import com.basemodel.model.Ground; import com.basemodel.model.NewsFeed; @Component public class FeedListDAO { @Autowired private SessionFactory sessionFactory; public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; } public List<NewsFeed> getNewsFeed() { List<NewsFeed> feedList = new ArrayList<NewsFeed>(); for (int i = 0; i < 6; i++) { NewsFeed feed = new NewsFeed(); feed.setPostedby("" + i); feed.setMediaType("TEXT"); feed.setPostContentMessage("We are part of the CB"); feedList.add(feed); } Ground ground = new Ground(); ground.setArea("Medavakkam"); Session session = sessionFactory.openSession(); session.persist(ground); //getHibernateTemplate().save(ground); return feedList; } }##描述：##我正在使用Spring mvc，multimodule maven项目，我的每个模块都有单独的spring上下文配置文件，并使用contextconfiglocation类路径加载它们：context.xml（每个模块中的所有配置文件都命名为context.xml）
Am getting an error while tomcat is starting up only when I am looking to wire the hibernate session factory, if I remove the same in my DAO, tomcat is starting up the rest call is getting inside. ## error details ## SEVERE: 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 'feedListDAO': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.hibernate.SessionFactory com.basemodel.dao.FeedListDAO.sessionFactory; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.hibernate.SessionFactory] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:444) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:326) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4812) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5255) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.hibernate.SessionFactory com.basemodel.dao.FeedListDAO.sessionFactory; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.hibernate.SessionFactory] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) ... 22 more Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.hibernate.SessionFactory] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1373) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1119) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545) ... 24 more ##context.xml ## <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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <bean id="hiberDataSource" class="org.apache.commons.dbcp2.BasicDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver" /> <property name="url" value="jdbc:mysql://localhost:3306/DB" /> <property name="username" value="root" /> <property name="password" value="root" /> </bean> <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> <property name="dataSource" ref="hiberDataSource"/> <property name="annotatedClasses"> <list> <value>com.basemodel.model.Ground</value> </list> </property> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop> <prop key="hibernate.show_sql">true</prop> </props> </property> </bean> <bean name="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory" /> <context:annotation-config /> <tx:annotation-driven transaction-manager="transactionManager" /> <context:component-scan base-package="com.basemodel.dao, com.basemodel.model" /> </bean> </beans>## DAO Class: ## package com.basemodel.dao;
import java.util.ArrayList; import java.util.List; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; import com.basemodel.model.Ground; import com.basemodel.model.NewsFeed; @Component public class FeedListDAO { @Autowired private SessionFactory sessionFactory; public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; } public List<NewsFeed> getNewsFeed() { List<NewsFeed> feedList = new ArrayList<NewsFeed>(); for (int i = 0; i < 6; i++) { NewsFeed feed = new NewsFeed(); feed.setPostedby("" + i); feed.setMediaType("TEXT"); feed.setPostContentMessage("We are part of the CB"); feedList.add(feed); } Ground ground = new Ground(); ground.setArea("Medavakkam"); Session session = sessionFactory.openSession(); session.persist(ground); //getHibernateTemplate().save(ground); return feedList; } }## Description: ## I am using Spring mvc, multimodule maven project and my each module have individual spring context configuration file and loading them using contextconfiglocation classpath:context.xml (all config files in each module is named context.xml)
Am getting an error while tomcat is starting up only when I am looking to wire the hibernate session factory, if I remove the same in my DAO, tomcat is starting up the rest call is getting inside. ## error details ## SEVERE: 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 'feedListDAO': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.hibernate.SessionFactory com.basemodel.dao.FeedListDAO.sessionFactory; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.hibernate.SessionFactory] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:444) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:326) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4812) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5255) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.hibernate.SessionFactory com.basemodel.dao.FeedListDAO.sessionFactory; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.hibernate.SessionFactory] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) ... 22 more Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.hibernate.SessionFactory] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1373) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1119) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545) ... 24 more最满意答案
略微重新设计您的BASEDAO课程
请创建一个构造函数参数来像这样设置SessionFactory
@Autowired public FeedListDAO(SessionFactory sessionFactory) { super(YourModel.class); super.setSessionFactory(sessionFactory); }您应该像下面的示例一样定义您的BASEDAO。
import java.io.Serializable; import java.util.List; import java.util.Map; import org.hibernate.SessionFactory; import org.springframework.orm.ObjectRetrievalFailureException; import org.springframework.orm.hibernate3.HibernateTemplate; import com.XX.XXXXIBaseDAO; /** * Base class for all hibernate DAO implementations * extend this class only when your require custom CRUD logic. * * @param <T> a type variable * @param <PK> the primary key for that type */ @SuppressWarnings("unchecked") public class BaseDAOImpl<T, PK extends Serializable> implements IBaseDAO<T, PK> { /** * Log variable for all child classes. */ private final Class<T> persistentClass; private HibernateTemplate hibernateTemplate; private SessionFactory sessionFactory; /** * Constructor that takes in a class to see which type of entity to persist. * Use this constructor when subclassing. * * @param persistentClass the class type you'd like to persist */ public BaseDAOImpl(final Class<T> persistentClass) { this.persistentClass = persistentClass; } /** * Constructor that takes in a class and sessionFactory for easy creation of DAO. * * @param persistentClass the class type you'd like to persist * @param sessionFactory the pre-configured Hibernate SessionFactory */ public BaseDAOImpl(final Class<T> persistentClass, SessionFactory sessionFactory) { this.persistentClass = persistentClass; this.sessionFactory = sessionFactory; this.hibernateTemplate = new HibernateTemplate(sessionFactory); } public HibernateTemplate getHibernateTemplate() { return this.hibernateTemplate; } public SessionFactory getSessionFactory() { return this.sessionFactory; } public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; this.hibernateTemplate = new HibernateTemplate(sessionFactory); } /** * {@inheritDoc} */ public List<T> getAll() { return hibernateTemplate.loadAll(this.persistentClass); } /** * {@inheritDoc} */ public T get(PK id) { T entity = (T) hibernateTemplate.get(this.persistentClass, id); if (entity == null) { throw new ObjectRetrievalFailureException(this.persistentClass, id); } return entity; } /** * {@inheritDoc} */ public boolean exists(PK id) { T entity = (T) hibernateTemplate.get(this.persistentClass, id); return entity != null; } /** * {@inheritDoc} */ public T save(T object) { T obj = (T) hibernateTemplate.save(object); hibernateTemplate.flush(); return obj; } /** * {@inheritDoc} */ public void saveorUpdate(T object) { hibernateTemplate.saveOrUpdate(object); hibernateTemplate.flush(); } /** * {@inheritDoc} */ public void delete(PK id) { hibernateTemplate.delete(this.get(id)); hibernateTemplate.flush(); } public void update(T object) { hibernateTemplate.update(object); hibernateTemplate.flush(); } public List<T> findByQuery(String queryString, Map<String, Object> queryParams) { String[] params = new String[queryParams.size()]; Object[] values = new Object[queryParams.size()]; int index = 0; for (String s : queryParams.keySet()) { params[index] = s; values[index++] = queryParams.get(s); } return hibernateTemplate.findByNamedParam(queryString, params, values); } }IBASEDAO界面如下。
import java.io.Serializable; import java.util.List; import java.util.Map; /** * Generic DAO with common methods for CRUD operations. * * <p>Extend this interface if you want typesafe DAO's * (no casting necessary) * * @param <T> a type variable * @param <PK> the primary key for that type */ public interface IBaseDAO <T, PK extends Serializable> { /** * Generic method used to get all objects of a particular type. This * is the same as lookup up all rows in a table. * @return List of populated objects */ List<T> getAll(); /** * Generic method to get an object based on class and identifier. An * ObjectRetrievalFailureException Runtime Exception is thrown if * nothing is found. * * @param id the identifier (primary key) of the object to get * @return a populated object * @see org.springframework.orm.ObjectRetrievalFailureException */ T get(PK id); /** * Checks for existence of an object of type T using the id arg. * @param id the id of the entity * @return - true if it exists, false if it doesn't */ boolean exists(PK id); /** * Generic method to save an object - handles both update and insert. * @param object the object to save * @return the persisted object */ T save(T object); /** * Generic method to save or Update an object - handles both update and insert. * @param object the object to save * @return the persisted object */ void saveorUpdate(T object); /** * Generic method to delete an object based on class and id * @param id the identifier (primary key) of the object to remove */ void delete(PK id); /** * Generic method to get an object based on class and identifier. An * ObjectRetrievalFailureException Runtime Exception is thrown if * nothing is found. * * @param queryString, queryParams used to get * @return a populated object * @see org.springframework.orm.ObjectRetrievalFailureException */ List<T> findByQuery(String queryString, Map<String, Object> queryParams) ; } }您的最终实施应该是这样的。
@Repository public class FeedListDAOImpl extends BaseDAOImpl<YourModel.class, Integer> implements FeedListDAO{ private static final Logger LOG = Logger.getLogger(FeedListDAOImpl .class); @Autowired public FeedListDAOImpl (SessionFactory sessionFactory) { super(YourModel.class); super.setSessionFactory(sessionFactory); }请进行上述更改，主要是为了更好地抽象DAO类。 希望这应该100％工作
Slightly Redesign your BASEDAO class
Please create a constructor arguments to set SessionFactory like this
@Autowired public FeedListDAO(SessionFactory sessionFactory) { super(YourModel.class); super.setSessionFactory(sessionFactory); }You should define your BASEDAO like below Example.
import java.io.Serializable; import java.util.List; import java.util.Map; import org.hibernate.SessionFactory; import org.springframework.orm.ObjectRetrievalFailureException; import org.springframework.orm.hibernate3.HibernateTemplate; import com.XX.XXXXIBaseDAO; /** * Base class for all hibernate DAO implementations * extend this class only when your require custom CRUD logic. * * @param <T> a type variable * @param <PK> the primary key for that type */ @SuppressWarnings("unchecked") public class BaseDAOImpl<T, PK extends Serializable> implements IBaseDAO<T, PK> { /** * Log variable for all child classes. */ private final Class<T> persistentClass; private HibernateTemplate hibernateTemplate; private SessionFactory sessionFactory; /** * Constructor that takes in a class to see which type of entity to persist. * Use this constructor when subclassing. * * @param persistentClass the class type you'd like to persist */ public BaseDAOImpl(final Class<T> persistentClass) { this.persistentClass = persistentClass; } /** * Constructor that takes in a class and sessionFactory for easy creation of DAO. * * @param persistentClass the class type you'd like to persist * @param sessionFactory the pre-configured Hibernate SessionFactory */ public BaseDAOImpl(final Class<T> persistentClass, SessionFactory sessionFactory) { this.persistentClass = persistentClass; this.sessionFactory = sessionFactory; this.hibernateTemplate = new HibernateTemplate(sessionFactory); } public HibernateTemplate getHibernateTemplate() { return this.hibernateTemplate; } public SessionFactory getSessionFactory() { return this.sessionFactory; } public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; this.hibernateTemplate = new HibernateTemplate(sessionFactory); } /** * {@inheritDoc} */ public List<T> getAll() { return hibernateTemplate.loadAll(this.persistentClass); } /** * {@inheritDoc} */ public T get(PK id) { T entity = (T) hibernateTemplate.get(this.persistentClass, id); if (entity == null) { throw new ObjectRetrievalFailureException(this.persistentClass, id); } return entity; } /** * {@inheritDoc} */ public boolean exists(PK id) { T entity = (T) hibernateTemplate.get(this.persistentClass, id); return entity != null; } /** * {@inheritDoc} */ public T save(T object) { T obj = (T) hibernateTemplate.save(object); hibernateTemplate.flush(); return obj; } /** * {@inheritDoc} */ public void saveorUpdate(T object) { hibernateTemplate.saveOrUpdate(object); hibernateTemplate.flush(); } /** * {@inheritDoc} */ public void delete(PK id) { hibernateTemplate.delete(this.get(id)); hibernateTemplate.flush(); } public void update(T object) { hibernateTemplate.update(object); hibernateTemplate.flush(); } public List<T> findByQuery(String queryString, Map<String, Object> queryParams) { String[] params = new String[queryParams.size()]; Object[] values = new Object[queryParams.size()]; int index = 0; for (String s : queryParams.keySet()) { params[index] = s; values[index++] = queryParams.get(s); } return hibernateTemplate.findByNamedParam(queryString, params, values); } }IBASEDAO interface given below.
import java.io.Serializable; import java.util.List; import java.util.Map; /** * Generic DAO with common methods for CRUD operations. * * <p>Extend this interface if you want typesafe DAO's * (no casting necessary) * * @param <T> a type variable * @param <PK> the primary key for that type */ public interface IBaseDAO <T, PK extends Serializable> { /** * Generic method used to get all objects of a particular type. This * is the same as lookup up all rows in a table. * @return List of populated objects */ List<T> getAll(); /** * Generic method to get an object based on class and identifier. An * ObjectRetrievalFailureException Runtime Exception is thrown if * nothing is found. * * @param id the identifier (primary key) of the object to get * @return a populated object * @see org.springframework.orm.ObjectRetrievalFailureException */ T get(PK id); /** * Checks for existence of an object of type T using the id arg. * @param id the id of the entity * @return - true if it exists, false if it doesn't */ boolean exists(PK id); /** * Generic method to save an object - handles both update and insert. * @param object the object to save * @return the persisted object */ T save(T object); /** * Generic method to save or Update an object - handles both update and insert. * @param object the object to save * @return the persisted object */ void saveorUpdate(T object); /** * Generic method to delete an object based on class and id * @param id the identifier (primary key) of the object to remove */ void delete(PK id); /** * Generic method to get an object based on class and identifier. An * ObjectRetrievalFailureException Runtime Exception is thrown if * nothing is found. * * @param queryString, queryParams used to get * @return a populated object * @see org.springframework.orm.ObjectRetrievalFailureException */ List<T> findByQuery(String queryString, Map<String, Object> queryParams) ; } }Your Final Implementation should be like this.
@Repository public class FeedListDAOImpl extends BaseDAOImpl<YourModel.class, Integer> implements FeedListDAO{ private static final Logger LOG = Logger.getLogger(FeedListDAOImpl .class); @Autowired public FeedListDAOImpl (SessionFactory sessionFactory) { super(YourModel.class); super.setSessionFactory(sessionFactory); }Please make the above changes,it is mainly for better abstraction of DAO classes. Hope this should work 100%
在4.2.5春季，Hibernate4 Session Factory没有自动装入DAO，(Hibernate4 Session Factory is not getting autowired into DAO in spring 4.2.5,) ##context.xml ## <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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <bean id="hiberDataSource" class="org.apache.commons.dbcp2.BasicDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver" /> <property name="url" value="jdbc:mysql://localhost:3306/DB" /> <property name="username" value="root" /> <property name="password" value="root" /> </bean> <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> <property name="dataSource" ref="hiberDataSource"/> <property name="annotatedClasses"> <list> <value>com.basemodel.model.Ground</value> </list> </property> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop> <prop key="hibernate.show_sql">true</prop> </props> </property> </bean> <bean name="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory" /> <context:annotation-config /> <tx:annotation-driven transaction-manager="transactionManager" /> <context:component-scan base-package="com.basemodel.dao, com.basemodel.model" /> </bean> </beans>## DAO类：## package com.basemodel.dao;
import java.util.ArrayList; import java.util.List; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; import com.basemodel.model.Ground; import com.basemodel.model.NewsFeed; @Component public class FeedListDAO { @Autowired private SessionFactory sessionFactory; public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; } public List<NewsFeed> getNewsFeed() { List<NewsFeed> feedList = new ArrayList<NewsFeed>(); for (int i = 0; i < 6; i++) { NewsFeed feed = new NewsFeed(); feed.setPostedby("" + i); feed.setMediaType("TEXT"); feed.setPostContentMessage("We are part of the CB"); feedList.add(feed); } Ground ground = new Ground(); ground.setArea("Medavakkam"); Session session = sessionFactory.openSession(); session.persist(ground); //getHibernateTemplate().save(ground); return feedList; } }##描述：##我正在使用Spring mvc，multimodule maven项目，我的每个模块都有单独的spring上下文配置文件，并使用contextconfiglocation类路径加载它们：context.xml（每个模块中的所有配置文件都命名为context.xml）
Am getting an error while tomcat is starting up only when I am looking to wire the hibernate session factory, if I remove the same in my DAO, tomcat is starting up the rest call is getting inside. ## error details ## SEVERE: 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 'feedListDAO': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.hibernate.SessionFactory com.basemodel.dao.FeedListDAO.sessionFactory; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.hibernate.SessionFactory] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:444) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:326) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4812) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5255) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.hibernate.SessionFactory com.basemodel.dao.FeedListDAO.sessionFactory; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.hibernate.SessionFactory] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) ... 22 more Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.hibernate.SessionFactory] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1373) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1119) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545) ... 24 more ##context.xml ## <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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <bean id="hiberDataSource" class="org.apache.commons.dbcp2.BasicDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver" /> <property name="url" value="jdbc:mysql://localhost:3306/DB" /> <property name="username" value="root" /> <property name="password" value="root" /> </bean> <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> <property name="dataSource" ref="hiberDataSource"/> <property name="annotatedClasses"> <list> <value>com.basemodel.model.Ground</value> </list> </property> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop> <prop key="hibernate.show_sql">true</prop> </props> </property> </bean> <bean name="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory" /> <context:annotation-config /> <tx:annotation-driven transaction-manager="transactionManager" /> <context:component-scan base-package="com.basemodel.dao, com.basemodel.model" /> </bean> </beans>## DAO Class: ## package com.basemodel.dao;
import java.util.ArrayList; import java.util.List; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; import com.basemodel.model.Ground; import com.basemodel.model.NewsFeed; @Component public class FeedListDAO { @Autowired private SessionFactory sessionFactory; public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; } public List<NewsFeed> getNewsFeed() { List<NewsFeed> feedList = new ArrayList<NewsFeed>(); for (int i = 0; i < 6; i++) { NewsFeed feed = new NewsFeed(); feed.setPostedby("" + i); feed.setMediaType("TEXT"); feed.setPostContentMessage("We are part of the CB"); feedList.add(feed); } Ground ground = new Ground(); ground.setArea("Medavakkam"); Session session = sessionFactory.openSession(); session.persist(ground); //getHibernateTemplate().save(ground); return feedList; } }## Description: ## I am using Spring mvc, multimodule maven project and my each module have individual spring context configuration file and loading them using contextconfiglocation classpath:context.xml (all config files in each module is named context.xml)
Am getting an error while tomcat is starting up only when I am looking to wire the hibernate session factory, if I remove the same in my DAO, tomcat is starting up the rest call is getting inside. ## error details ## SEVERE: 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 'feedListDAO': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.hibernate.SessionFactory com.basemodel.dao.FeedListDAO.sessionFactory; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.hibernate.SessionFactory] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:444) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:326) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4812) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5255) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.hibernate.SessionFactory com.basemodel.dao.FeedListDAO.sessionFactory; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.hibernate.SessionFactory] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) ... 22 more Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.hibernate.SessionFactory] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1373) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1119) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545) ... 24 more最满意答案
略微重新设计您的BASEDAO课程
请创建一个构造函数参数来像这样设置SessionFactory
@Autowired public FeedListDAO(SessionFactory sessionFactory) { super(YourModel.class); super.setSessionFactory(sessionFactory); }您应该像下面的示例一样定义您的BASEDAO。
import java.io.Serializable; import java.util.List; import java.util.Map; import org.hibernate.SessionFactory; import org.springframework.orm.ObjectRetrievalFailureException; import org.springframework.orm.hibernate3.HibernateTemplate; import com.XX.XXXXIBaseDAO; /** * Base class for all hibernate DAO implementations * extend this class only when your require custom CRUD logic. * * @param <T> a type variable * @param <PK> the primary key for that type */ @SuppressWarnings("unchecked") public class BaseDAOImpl<T, PK extends Serializable> implements IBaseDAO<T, PK> { /** * Log variable for all child classes. */ private final Class<T> persistentClass; private HibernateTemplate hibernateTemplate; private SessionFactory sessionFactory; /** * Constructor that takes in a class to see which type of entity to persist. * Use this constructor when subclassing. * * @param persistentClass the class type you'd like to persist */ public BaseDAOImpl(final Class<T> persistentClass) { this.persistentClass = persistentClass; } /** * Constructor that takes in a class and sessionFactory for easy creation of DAO. * * @param persistentClass the class type you'd like to persist * @param sessionFactory the pre-configured Hibernate SessionFactory */ public BaseDAOImpl(final Class<T> persistentClass, SessionFactory sessionFactory) { this.persistentClass = persistentClass; this.sessionFactory = sessionFactory; this.hibernateTemplate = new HibernateTemplate(sessionFactory); } public HibernateTemplate getHibernateTemplate() { return this.hibernateTemplate; } public SessionFactory getSessionFactory() { return this.sessionFactory; } public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; this.hibernateTemplate = new HibernateTemplate(sessionFactory); } /** * {@inheritDoc} */ public List<T> getAll() { return hibernateTemplate.loadAll(this.persistentClass); } /** * {@inheritDoc} */ public T get(PK id) { T entity = (T) hibernateTemplate.get(this.persistentClass, id); if (entity == null) { throw new ObjectRetrievalFailureException(this.persistentClass, id); } return entity; } /** * {@inheritDoc} */ public boolean exists(PK id) { T entity = (T) hibernateTemplate.get(this.persistentClass, id); return entity != null; } /** * {@inheritDoc} */ public T save(T object) { T obj = (T) hibernateTemplate.save(object); hibernateTemplate.flush(); return obj; } /** * {@inheritDoc} */ public void saveorUpdate(T object) { hibernateTemplate.saveOrUpdate(object); hibernateTemplate.flush(); } /** * {@inheritDoc} */ public void delete(PK id) { hibernateTemplate.delete(this.get(id)); hibernateTemplate.flush(); } public void update(T object) { hibernateTemplate.update(object); hibernateTemplate.flush(); } public List<T> findByQuery(String queryString, Map<String, Object> queryParams) { String[] params = new String[queryParams.size()]; Object[] values = new Object[queryParams.size()]; int index = 0; for (String s : queryParams.keySet()) { params[index] = s; values[index++] = queryParams.get(s); } return hibernateTemplate.findByNamedParam(queryString, params, values); } }IBASEDAO界面如下。
import java.io.Serializable; import java.util.List; import java.util.Map; /** * Generic DAO with common methods for CRUD operations. * * <p>Extend this interface if you want typesafe DAO's * (no casting necessary) * * @param <T> a type variable * @param <PK> the primary key for that type */ public interface IBaseDAO <T, PK extends Serializable> { /** * Generic method used to get all objects of a particular type. This * is the same as lookup up all rows in a table. * @return List of populated objects */ List<T> getAll(); /** * Generic method to get an object based on class and identifier. An * ObjectRetrievalFailureException Runtime Exception is thrown if * nothing is found. * * @param id the identifier (primary key) of the object to get * @return a populated object * @see org.springframework.orm.ObjectRetrievalFailureException */ T get(PK id); /** * Checks for existence of an object of type T using the id arg. * @param id the id of the entity * @return - true if it exists, false if it doesn't */ boolean exists(PK id); /** * Generic method to save an object - handles both update and insert. * @param object the object to save * @return the persisted object */ T save(T object); /** * Generic method to save or Update an object - handles both update and insert. * @param object the object to save * @return the persisted object */ void saveorUpdate(T object); /** * Generic method to delete an object based on class and id * @param id the identifier (primary key) of the object to remove */ void delete(PK id); /** * Generic method to get an object based on class and identifier. An * ObjectRetrievalFailureException Runtime Exception is thrown if * nothing is found. * * @param queryString, queryParams used to get * @return a populated object * @see org.springframework.orm.ObjectRetrievalFailureException */ List<T> findByQuery(String queryString, Map<String, Object> queryParams) ; } }您的最终实施应该是这样的。
@Repository public class FeedListDAOImpl extends BaseDAOImpl<YourModel.class, Integer> implements FeedListDAO{ private static final Logger LOG = Logger.getLogger(FeedListDAOImpl .class); @Autowired public FeedListDAOImpl (SessionFactory sessionFactory) { super(YourModel.class); super.setSessionFactory(sessionFactory); }请进行上述更改，主要是为了更好地抽象DAO类。 希望这应该100％工作
Slightly Redesign your BASEDAO class
Please create a constructor arguments to set SessionFactory like this
@Autowired public FeedListDAO(SessionFactory sessionFactory) { super(YourModel.class); super.setSessionFactory(sessionFactory); }You should define your BASEDAO like below Example.
import java.io.Serializable; import java.util.List; import java.util.Map; import org.hibernate.SessionFactory; import org.springframework.orm.ObjectRetrievalFailureException; import org.springframework.orm.hibernate3.HibernateTemplate; import com.XX.XXXXIBaseDAO; /** * Base class for all hibernate DAO implementations * extend this class only when your require custom CRUD logic. * * @param <T> a type variable * @param <PK> the primary key for that type */ @SuppressWarnings("unchecked") public class BaseDAOImpl<T, PK extends Serializable> implements IBaseDAO<T, PK> { /** * Log variable for all child classes. */ private final Class<T> persistentClass; private HibernateTemplate hibernateTemplate; private SessionFactory sessionFactory; /** * Constructor that takes in a class to see which type of entity to persist. * Use this constructor when subclassing. * * @param persistentClass the class type you'd like to persist */ public BaseDAOImpl(final Class<T> persistentClass) { this.persistentClass = persistentClass; } /** * Constructor that takes in a class and sessionFactory for easy creation of DAO. * * @param persistentClass the class type you'd like to persist * @param sessionFactory the pre-configured Hibernate SessionFactory */ public BaseDAOImpl(final Class<T> persistentClass, SessionFactory sessionFactory) { this.persistentClass = persistentClass; this.sessionFactory = sessionFactory; this.hibernateTemplate = new HibernateTemplate(sessionFactory); } public HibernateTemplate getHibernateTemplate() { return this.hibernateTemplate; } public SessionFactory getSessionFactory() { return this.sessionFactory; } public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; this.hibernateTemplate = new HibernateTemplate(sessionFactory); } /** * {@inheritDoc} */ public List<T> getAll() { return hibernateTemplate.loadAll(this.persistentClass); } /** * {@inheritDoc} */ public T get(PK id) { T entity = (T) hibernateTemplate.get(this.persistentClass, id); if (entity == null) { throw new ObjectRetrievalFailureException(this.persistentClass, id); } return entity; } /** * {@inheritDoc} */ public boolean exists(PK id) { T entity = (T) hibernateTemplate.get(this.persistentClass, id); return entity != null; } /** * {@inheritDoc} */ public T save(T object) { T obj = (T) hibernateTemplate.save(object); hibernateTemplate.flush(); return obj; } /** * {@inheritDoc} */ public void saveorUpdate(T object) { hibernateTemplate.saveOrUpdate(object); hibernateTemplate.flush(); } /** * {@inheritDoc} */ public void delete(PK id) { hibernateTemplate.delete(this.get(id)); hibernateTemplate.flush(); } public void update(T object) { hibernateTemplate.update(object); hibernateTemplate.flush(); } public List<T> findByQuery(String queryString, Map<String, Object> queryParams) { String[] params = new String[queryParams.size()]; Object[] values = new Object[queryParams.size()]; int index = 0; for (String s : queryParams.keySet()) { params[index] = s; values[index++] = queryParams.get(s); } return hibernateTemplate.findByNamedParam(queryString, params, values); } }IBASEDAO interface given below.
import java.io.Serializable; import java.util.List; import java.util.Map; /** * Generic DAO with common methods for CRUD operations. * * <p>Extend this interface if you want typesafe DAO's * (no casting necessary) * * @param <T> a type variable * @param <PK> the primary key for that type */ public interface IBaseDAO <T, PK extends Serializable> { /** * Generic method used to get all objects of a particular type. This * is the same as lookup up all rows in a table. * @return List of populated objects */ List<T> getAll(); /** * Generic method to get an object based on class and identifier. An * ObjectRetrievalFailureException Runtime Exception is thrown if * nothing is found. * * @param id the identifier (primary key) of the object to get * @return a populated object * @see org.springframework.orm.ObjectRetrievalFailureException */ T get(PK id); /** * Checks for existence of an object of type T using the id arg. * @param id the id of the entity * @return - true if it exists, false if it doesn't */ boolean exists(PK id); /** * Generic method to save an object - handles both update and insert. * @param object the object to save * @return the persisted object */ T save(T object); /** * Generic method to save or Update an object - handles both update and insert. * @param object the object to save * @return the persisted object */ void saveorUpdate(T object); /** * Generic method to delete an object based on class and id * @param id the identifier (primary key) of the object to remove */ void delete(PK id); /** * Generic method to get an object based on class and identifier. An * ObjectRetrievalFailureException Runtime Exception is thrown if * nothing is found. * * @param queryString, queryParams used to get * @return a populated object * @see org.springframework.orm.ObjectRetrievalFailureException */ List<T> findByQuery(String queryString, Map<String, Object> queryParams) ; } }Your Final Implementation should be like this.
@Repository public class FeedListDAOImpl extends BaseDAOImpl<YourModel.class, Integer> implements FeedListDAO{ private static final Logger LOG = Logger.getLogger(FeedListDAOImpl .class); @Autowired public FeedListDAOImpl (SessionFactory sessionFactory) { super(YourModel.class); super.setSessionFactory(sessionFactory); }Please make the above changes,it is mainly for better abstraction of DAO classes. Hope this should work 100%
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