Spring整合Hibernate详细步骤
Posted 夏冬青
tags:
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一、概述
Spring整合Hibernate有什么好处？
1、由IOC容器来管理Hibernate的SessionFactory
2、让Hibernate使用上Spring的声明式事务
二、整合步骤
整合前准备：
持久化类：
@Entity
public class Book
{
private Integer id;
private String bookName;
private String isbn;
private int price;
private int stock;
public Integer getId()
{
return id;
}
public void setId(Integer id)
{
this.id = id;
}
public String getBookName()
{
return bookName;
}
public void setBookName(String bookName)
{
this.bookName = bookName;
}
public String getIsbn()
{
return isbn;
}
public void setIsbn(String isbn)
{
this.isbn = isbn;
}
public int getPrice()
{
return price;
}
public void setPrice(int price)
{
this.price = price;
}
public int getStock()
{
return stock;
}
public void setStock(int stock)
{
this.stock = stock;
}
public Book(Integer id, String bookName, String isbn, int price, int stock)
{
super();
this.id = id;
this.bookName = bookName;
this.isbn = isbn;
this.price = price;
this.stock = stock;
}
}
Dao层：
public interface BookDao
{
public String findBookById(int id);
public void saveBook(Book book);
}
DaoImpl:
@Repository
public class BookDaoImpl implements BookDao
{
@Autowired
private SessionFactory sessionFactory;
//获取和当前线程绑定的Seesion
private Session getSession()
{
return sessionFactory.getCurrentSession();
}
public String findBookById(int id)
{
String hql="SELECT bookName from Book where id=?";
Query query=getSession().createQuery(hql).setInteger(0, id);
String str= query.uniqueResult().toString();
return str;
}
public void saveBook(Book book)
{
getSession().save(book);
}
}
Service层：
public interface BookService
{
public String findBookById(int id);
public void saveBook(Book book);
}
ServiceImpl：
@Service
public class BookServiceImpl implements BookService
{
@Autowired
private BookDao bookDao;
public String findBookById(int id)
{
return bookDao.findBookById(id);
}
public void saveBook(Book book)
{
bookDao.saveBook(book);
}
}
1、加入Hibernate
- 加入hibernate jar包
- 添加Hibernate的配置文件：hibernate.cfg.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- 配置Hibernate的基本属性 -->
<!-- 1.数据源配置到IOC容器中 -->
<!-- 2.关联的.hbm.xml也在IOC容器配置SessionFactory实例 -->
<!-- 3.配置Hibernate的基本属性：方言，SQL显示及格式化，生成数据表的策略以及二级缓存 -->
<property name="hibernate.dialect">org.hibernate.dialect.mysql5Dialect</property>
<property name="hibernate.show_sql">true</property>
<property name="hbm2ddl.auto">update</property>
</session-factory>
</hibernate-configuration>
- 编写持久化类对应的.hbm.xml文件
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 2016-3-15 16:30:05 by Hibernate Tools 3.4.0.CR1 -->
<hibernate-mapping>
<class name="com.demo.ssm.po.Book" table="BOOK">
<id name="id" type="java.lang.Integer">
<column name="ID" />
<generator class="native" />
</id>
<property name="bookName" type="java.lang.String">
<column name="BOOK_NAME" />
</property>
<property name="isbn" type="java.lang.String">
<column name="ISBN" />
</property>
<property name="price" type="int">
<column name="PRICE" />
</property>
<property name="stock" type="int">
<column name="STOCK" />
</property>
</class>
</hibernate-mapping>
2、加入Spring
- 加入spring jar包
- 加入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:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd">
<context:component-scan base-package="com.demo.ssm"></context:component-scan>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost/test" />
<property name="username" value="root"></property>
<property name="password" value="281889"></property>
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean" lazy-init="false">
<!-- 注入datasource，给sessionfactoryBean内setdatasource提供数据源 -->
<property name="dataSource" ref="dataSource" />
<property name="configLocation" value="classpath:hibernate.cfg.xml"></property>
<!-- //加载实体类的映射文件位置及名称 -->
<property name="mappingLocations" value="classpath:com/demo/ssm/po/*.hbm.xml"></property>
</bean>
<!-- 配置Spring声明式事务 -->
<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
<!-- 配置事务事务属性 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="get*" read-only="true"/>
<tx:method name="*"/>
</tx:attributes>
</tx:advice>
<!-- 配置事务切点，并把切点和事务属性关联起来 -->
<aop:config>
<aop:pointcut expression="execution(* com.demo.ssm.daoImpl.*.*(..))" id="txPointcut"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="txPointcut"/>
</aop:config>
</beans>
3、编写测试类
public class BookDaoImplTest
{
private ApplicationContext context=null;
private BookService bookService=null;
{
context= new ClassPathXmlApplicationContext("applicationContext.xml");
bookService=context.getBean(BookService.class);
}
@Test
public void test()
{
DataSource dataSource=(DataSource) context.getBean(DataSource.class);
System.out.println(dataSource);
}
@Test
public void test2()
{
String bookName=bookService.findBookById(1);
System.out.println(bookName);
}
@Test
public void test3()
{
bookService.saveBook(new Book(2, "android源码分析", "1002", 45, 10));
}
}
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