Hibernate 休眠事务
我对hibernate和事务有问题 我想从数据库中删除对象Hibernate 休眠事务,hibernate,transactions,Hibernate,Transactions,我对hibernate和事务有问题 我想从数据库中删除对象 @Transactional public boolean addProduct(Cart cart) { try { sessionFactory.getCurrentSession().save(cart); return true; } catch (HibernateException e) { LOG.debug("ERROR adding product int
@Transactional
public boolean addProduct(Cart cart) {
try {
sessionFactory.getCurrentSession().save(cart);
return true;
} catch (HibernateException e) {
LOG.debug("ERROR adding product into cart" + e);
return false;
}
}
@Transactional
public boolean deleteProductByProdIdAndAmount(Cart cart) {
sessionFactory.getCurrentSession().delete(cart);
return true;
}
它完美地添加了对象,但没有删除它,我也没有排除任何异常。如果我写
sessionFactory.getCurrentSession().getTransaction().commit();
sessionFactory.getCurrentSession().createQuery("delete from Cart where order_id = 77 and product_id = 9").executeUpdate();
它将向我显示一个异常,即事务未成功启动,但它将删除一个对象。这是我的配置文件:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.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"
default-lazy-init="true">
<tx:annotation-driven transaction-manager="txManager" />
<bean id="configProperties" class="com.dataart.masternoy.utils.PropertiesUtil">
<property name="ignoreUnresolvablePlaceholders" value="true" />
<property name="locations">
<list>
<value>classpath:/config.properties</value>
<value>classpath:/jdbc.properties</value>
</list>
</property>
</bean>
<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/shop" />
<property name="username" value="root" />
<property name="password" value="root" />
</bean>
<bean class="org.springframework.jdbc.core.JdbcTemplate" id="jdbcTemplate">
<constructor-arg ref="dataSource" />
</bean>
<bean id="txManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"
lazy-init="true">
<property name="dataSource" ref="dataSource" />
<property name="configLocation">
<value>classpath:hibernateConfig.xml</value>
</property>
<property name="configurationClass">
<value>org.hibernate.cfg.AnnotationConfiguration</value>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLInnoDBDialect</prop>
<prop key="hibernate.connection.charSet">UTF-8</prop>
</props>
</property>
</bean>
它将从数据库中删除对象。在删除之前,您是否从持久层获取您的
购物车?您可能还希望将事务划分移到服务层或客户端代码。例如:
@Transactional
public void deleteCart(long id) {
Cart cart = this.cartDao.getCart(id);
this.cartDao.deleteProductByProdIdAndAmount(cart);
}
其中是调用addProduct()和DeleteProductByProdAndAmount()的代码?这应该标记为@Transactional…,因为您使用的是Spring,所以不需要调用commit()或rollback()。我知道春天应该为我做很多工作。