弹簧&x2B；Hibernate，将sessionFactory自动连接到Hibernate DAO

我有一个Hibernate DAO，根据Hibernate API 3和Spring 3.x，我只使用一个

sessionFactory

，而不是

HibernateDataSupport

+

getHibernateTemplate（）

-我希望这是一个好的选择-

现在，我的目标是使用注释将sessionFactory自动连接到DAO中

在我的

spring.xml

中，我有：

<context:component-scan base-package="data" />

我在

spring.xml

加载期间没有错误，但是

sessionFactory

仍然是

null

我该怎么办

编辑

这是我在

spring.xml

中的

sessionFactory

声明：

<?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="driverClassName" value="org.h2.Driver" /> -->
        <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>

可能意味着它找不到

PersonHDAO

bean

---

谢谢大家。

您申报sessionFactory bean了吗

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

文件：src/hibernate.cfg.xml

我想你的问题是@Autowired

您可以创建一个类

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;
  }
}

---

@毛里齐奥·库奇亚拉：当然，我用更多的信息编辑了我的第一篇文章。这是一个网络应用程序？您是否在web.xml中声明了org.springframework.web.context.ContextLoaderListener？@Maurizio Cucchiara:不，这是一个桌面应用程序，我没有web.xml文件。您是如何获得PersonHDAO实例的？使用AnnotationConfigApplicationContext？@Maurizio Cucchiara:我只需创建新的istance:new PersondHDAO（）。。。这是一个错误吗？我使用以下命令初始化spring上下文：ApplicationContext context=newclasspathXMLapplicationContext（新字符串[]{“spring.xml”}）；

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

@Autowired
private SessionFactory sessionFactory;

 @Autowired
 private SessionFactory sessionFactory;

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

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;
  }
}