Question

我有 Hibernate DAO ，根据 Hibernate API 3 和 Spring 3.x ，我只使用{{1} }和不 sessionFactory + HibernateDaoSupport - 我希望这是一个不错的选择...... -

现在我的目标是使用注释将getHibernateTemplate()自动装入我的DAO。

在我的sessionFactory我有这个：

spring.xml

内部数据包我拥有所有DAO和服务类。

这是我的简单<context:component-scan base-package="data" />：

HibernateDao

我在@Repository public class PersonHDAO implements PersonDAO { private SessionFactory sessionFactory; @Autowired public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; } public List<Person> findAll(){ return sessionFactory.getCurrentSession().createQuery("bla bla").list(); } }加载期间没有错误，但spring.xml仍为sessionFactory。

我该怎么做？

修改

这是null中的sessionFactory声明：

spring.xml

EDIT2 现在<?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:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation= "http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">  <property name="url" value="my/db/url" /> <property name="username" value="myUsername" /> <property name="password" value="myPassword" /> </bean> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="packagesToScan" value="data" /> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.H2Dialect</prop> <prop key="hibernate.current_session_context_class">thread</prop> <prop key="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</prop> <prop key="hibernate.show_sql">true</prop> <prop key="hibernate.hbm2ddl.auto">update</prop> </props> </property> </bean> <context:component-scan base-package="data" /> <tx:annotation-driven/> <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory" /> </bean> </beans>不是null，但我有另一种例外：

sessionFactory

也许意味着找不到org.springframework.beans.factory.NoSuchBeanDefinitionException: No unique bean of type [data.PersonHDAO] is defined: expected single bean but found 0: bean？

谢谢大家。

Answer 1

您是否声明了sessionFactory bean？

<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="configLocation">
<value>file:src/hibernate.cfg.xml</value>
</property>
</bean>

Answer 2

我认为你的问题是@Autowired

@Autowired
private SessionFactory sessionFactory;

Answer 3

 @Autowired
 private SessionFactory sessionFactory;

 public void setSessionFactory(SessionFactory sessionFactory) {
     this.sessionFactory = sessionFactory;
 }

Answer 4

您可以创建课程

import java.util.Properties;

import javax.sql.DataSource;

import org.apache.commons.dbcp2.BasicDataSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.core.env.Environment;
import org.springframework.orm.hibernate5.LocalSessionFactoryBean;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@Configuration
@EnableTransactionManagement
@PropertySource("classpath:application.properties")
@ComponentScan("com.your.package")
public class HibernateConfig {

  private Environment environment;

  @Autowired
  public void setEnvironment(Environment environment) {
    this.environment = environment;
  }

  @Bean
  public LocalSessionFactoryBean sessionFactory() {
    LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
    sessionFactory.setDataSource(dataSource());
    sessionFactory.setPackagesToScan(new String[] { "com.your.package" });
    sessionFactory.setHibernateProperties(properties());
    return sessionFactory;
  }

  @Bean
  public DataSource dataSource() {
    BasicDataSource dataSource = new BasicDataSource();
    dataSource.setDriverClassName(environment.getRequiredProperty("hibernate.connection.driver_class"));
    dataSource.setUrl(environment.getRequiredProperty("hibernate.connection.url"));
    dataSource.setUsername(environment.getRequiredProperty("hibernate.connection.username"));
    dataSource.setPassword(environment.getRequiredProperty("hibernate.connection.password"));
    return dataSource;
  }

  private Properties properties() {
    Properties hibernateProperties = new Properties();
    hibernateProperties.setProperty("hibernate.dialect", environment.getRequiredProperty("hibernate.dialect"));
    hibernateProperties.setProperty("hibernate.hbm2ddl.auto",
            environment.getRequiredProperty("hibernate.hbm2ddl.auto"));
    return hibernateProperties;
  }
}

Spring + Hibernate，将autowire sessionFactory转换为hibernate DAO

4 个答案: