java - 什么是 HibernateTemplate 类？

Question

我是 Hibernate 的新手，目前想实现 Hibernate 模板类，任何人请告诉我有关 Hibernate 模板类的信息。

xml文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:jdbc="http://www.springframework.org/schema/jdbc"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    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/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd">

    <bean id="dataSource"
        class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver" />
        <property name="url" value="jdbc:mysql://localhost/test" />
        <property name="username" value="root" />
        <property name="password" value="mnrpass" />
    </bean>
    <bean id="sessionFactory"
        class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="mappingResources">
            <list>
                <value>employee.hbm.xml</value>
            </list>
        </property>
        <property name="configLocation" value="classpath:hibernate.cfg.xml" />
    </bean>
    <bean id="springHibernateExample" class="com.javarticles.spring.hibernate.SpringHibernateExample">
        <property name="sessionFactory" ref="sessionFactory" />
    </bean>
</beans>

Answer 1

Copied from Hibernate Interview Questions:

Hibernate Template

When Spring and Hibernate integration started, Spring ORM provided two helper classes – HibernateDaoSupport and HibernateTemplate. The reason to use them was to get the Session from Hibernate and get the benefit of Spring transaction management. However from Hibernate 3.0.1, we can use SessionFactory getCurrentSession() method to get the current session and use it to get the spring transaction management benefits. If you go through above examples, you will see how easy it is and that’s why we should not use these classes anymore.

One other benefit of HibernateTemplate was exception translation but that can be achieved easily by using @Repository annotation with service classes, shown in above spring mvc example. This is a trick question to judge your knowledge and whether you are aware of recent developments or not.