我尝试了不同的配置,但无效。错误保持不变。这里从BoneCPs网站采取所需的配置:Spring 3.1 + hibernate 4:无法运行
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.2.RELEASE.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.2.RELEASE.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
">
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean" autowire-candidate="" autowire="autodetect">
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">create</prop>
<prop key="hibernate.connection.provider_class">com.jolbox.bonecp.provider.BoneCPConnectionProvider</prop>
<prop key="hibernate.connection.driver_class">org.postgresql.Driver</prop>
<prop key="hibernate.connection.url">jdbc:postgresql:MyDB</prop>
<prop key="hibernate.connection.username">postgres</prop>
<prop key="hibernate.connection.password">123456</prop>
<prop key="bonecp.idleMaxAge">240</prop>
<prop key="bonecp.idleConnectionTestPeriod">60</prop>
<prop key="bonecp.partitionCount">1</prop>
<prop key="bonecp.acquireIncrement">5</prop>
<prop key="bonecp.maxConnectionsPerPartition">60</prop>
<prop key="bonecp.minConnectionsPerPartition">5</prop>
<prop key="bonecp.statementsCacheSize">50</prop>
<prop key="bonecp.releaseHelperThreads">2</prop>
</props>
</property>
</bean>
<!--<bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<tx:annotation-driven transaction-manager="txManager" /> -->
<bean id="AbstractHibernateDAO" abstract="true"
class="org.bitbucket.myName.moleculedatabaseframework.dao.AbstractHibernateDAO"/>
<bean id="ChemicalStructureDAO" extends="AbstractHibernateDAO"
class="org.bitbucket.myName.moleculedatabaseframework.dao.ChemicalStructureDAO"/>
<bean id="ChemicalCompoundDAO" extends="AbstractHibernateDAO"
class="org.bitbucket.myName.moleculedatabaseframework.dao.ChemicalCompoundDAO"/>
</beans>
和代码包含自动连接会话工厂:
@Repository
public abstract class AbstractHibernateDAO< T extends Serializable> {
private final Class< T> clazz;
@Autowired
SessionFactory sessionFactory;
public AbstractHibernateDAO(final Class< T> clazzToSet){
this.clazz = clazzToSet;
}
public T getById(final Long id) {
Preconditions.checkArgument(id != null);
return (T) this.getCurrentSession().get(this.clazz, id);
}
public List< T> getAll() {
return this.getCurrentSession()
.createQuery("from " + this.clazz.getName()).list();
}
public void create(final T entity) {
Preconditions.checkNotNull(entity);
this.getCurrentSession().persist(entity);
}
public void update(final T entity) {
Preconditions.checkNotNull(entity);
this.getCurrentSession().merge(entity);
}
public void delete(final T entity) {
Preconditions.checkNotNull(entity);
this.getCurrentSession().delete(entity);
}
public void deleteById(final Long entityId) {
final T entity = this.getById(entityId);
Preconditions.checkState(entity != null);
this.delete(entity);
}
protected final Session getCurrentSession() {
return this.sessionFactory.getCurrentSession();
}
}
当试图创建一个新的实体(片段的最后一行),我得到一个错误:
ApplicationContext context = new ClassPathXmlApplicationContext("ApplicationContext.xml");
ChemicalStructureDAO structureDAO = (ChemicalStructureDAO) context.getBean("ChemicalStructureDAO");
ChemicalStructure structure1 = new ChemicalStructure();
structure1.setStructureKey("c1ccccc1");
structure1.setStructureData("c1ccccc1");
structureDAO.create(structure1);
我得到一个NullPointerException:
java.lang.NullPointerException
at org.bitbucket.myName.moleculedatabaseframework.dao.AbstractHibernateDAO.getCurrentSession(AbstractHibernateDAO.java:78)
at org.bitbucket.myName.moleculedatabaseframework.dao.AbstractHibernateDAO.create(AbstractHibernateDAO.java:54)
at org.bitbucket.myName.moleculedatabaseframework.App.main(App.java:32)
------------------------------------------------------------------------
也许我误解了autowired意味着什么?我认为那个属性会自动设置。所以我尝试以下操作:
ApplicationContext context = new ClassPathXmlApplicationContext("ApplicationContext.xml");
SessionFactory sessionfactory = (SessionFactory)context.getBean("sessionFactory");
ChemicalStructureDAO structureDAO = (ChemicalStructureDAO) context.getBean("ChemicalStructureDAO");
structureDAO.setSessionFactory(sessionfactory);
ChemicalStructure structure1 = new ChemicalStructure();
structure1.setStructureKey("c1ccccc1");
structure1.setStructureData("c1ccccc1");
structureDAO.create(structure1);
这将导致以下错误:
Exception in thread "main" org.hibernate.HibernateException: No Session found for current thread
at org.springframework.orm.hibernate4.SpringSessionContext.currentSession(SpringSessionContext.java:97)
at org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:941)
at org.bitbucket.myName.moleculedatabaseframework.dao.AbstractHibernateDAO.getCurrentSession(AbstractHibernateDAO.java:78)
at org.bitbucket.myName.moleculedatabaseframework.dao.AbstractHibernateDAO.create(AbstractHibernateDAO.java:54)
我看着吨的教程,但他们都忽略了什么似乎是基本的东西,得到的东西运行,例如。 ApplicationContext context = new ClassPathXmlApplicationContext(“ApplicationContext.xml”);没有出现在任何spring + hibernate教程中。有人能给我一个完整的教程,假设我完全愚蠢,并告诉我每一步都需要,并且有一个实际运行时重复代码的应用程序? (是的,现在变得非常沮丧了,说实话,如果我明白了jdbc,我会在几个小时前开始运行)
现在,我该如何运行?自动装配工作如何?
编辑: AS FOUND通过 “接受的答案” 的帮助下,解决方案:
新的Spring配置文件:
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
">
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean" autowire="autodetect">
<property name="dataSource" ref="dataSource" />
<property name="annotatedClasses">
<list>
<value>org.bitbucket.myName.moleculedatabaseframework.entityclasses.ChemicalStructure</value>
<value>org.bitbucket.myName.moleculedatabaseframework.entityclasses.ChemicalCompound</value>
<value>org.bitbucket.myName.moleculedatabaseframework.entityclasses.ChemicalCompoundComposition</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">create</prop>
</props>
</property>
</bean>
<!-- Spring bean configuration. Tell Spring to bounce off BoneCP -->
<bean id="dataSource"
class="org.springframework.jdbc.datasource.LazyConnectionDataSourceProxy">
<property name="targetDataSource">
<ref local="mainDataSource" />
</property>
</bean>
<!-- BoneCP configuration -->
<bean id="mainDataSource" class="com.jolbox.bonecp.BoneCPDataSource" destroy-method="close">
<property name="driverClass" value="org.postgresql.Driver" />
<property name="jdbcUrl" value="jdbc:postgresql:MolDB" />
<property name="username" value="postgres"/>
<property name="password" value="123456"/>
<property name="idleConnectionTestPeriod" value="60"/>
<property name="idleMaxAge" value="240"/>
<property name="maxConnectionsPerPartition" value="60"/>
<property name="minConnectionsPerPartition" value="20"/>
<property name="partitionCount" value="3"/>
<property name="acquireIncrement" value="10"/>
<property name="statementsCacheSize" value="50"/>
<property name="releaseHelperThreads" value="3"/>
</bean>
<bean id="txManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<tx:annotation-driven transaction-manager="txManager" />
<context:annotation-config />
<bean id="AbstractHibernateDAO" abstract="true"
class="org.bitbucket.myName.moleculedatabaseframework.dao.AbstractHibernateDAO"/>
<bean id="ChemicalStructureDAO" parent="AbstractHibernateDAO"
class="org.bitbucket.myName.moleculedatabaseframework.dao.ChemicalStructureDAO"/>
<bean id="ChemicalCompoundDAO" parent="AbstractHibernateDAO"
class="org.bitbucket.myName.moleculedatabaseframework.dao.ChemicalCompoundDAO"/>
</beans>
我不得不添加
<context:annotation-config />
到文件并在sessionFactory配置中声明已注释的实体类:
<property name="annotatedClasses">
<list>
<value>org.bitbucket.myName.moleculedatabaseframework.entityclasses.ChemicalStructure</value>
<value>org.bitbucket.myName.moleculedatabaseframework.entityclasses.ChemicalCompound</value>
<value>org.bitbucket.myName.moleculedatabaseframework.entityclasses.ChemicalCompoundComposition</value>
</list>
</property>
我不得不取消对事务管理器部分的注释,并且因为更改了数据源配置,因为我使用的配置不起作用(需要DataSource)。
我也不得不
@Repository
@Transactional
public abstract class AbstractHibernateDAO< T extends Serializable> {
//code...
}
添加到AbstractHibernateDAO。我正在考虑编写一篇博客文章并在此处建立链接。对于任何人来说,新的Spring和hibernate将非常有用。
你可以给你的applicationContext.xml或者一个xml在spring初始化的时候...... – sgpalit