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[Java教程]Spring整合Hibernate详细步骤


阅读目录

  • 一、概述
  • 二、整合步骤

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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

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二、整合步骤

  整合前准备:

  持久化类:

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@Entitypublic 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;  }}
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  Dao层:

public interface BookDao{  public String findBookById(int id);    public void saveBook(Book book);}

  DaoImpl:

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@Repositorypublic 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);  }}
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  Service层:

public interface BookService{  public String findBookById(int id);  public void saveBook(Book book);}

  ServiceImpl:

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@Servicepublic 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);      }}
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  1、加入Hibernate

  • 加入hibernate jar包
  • 添加Hibernate的配置文件:hibernate.cfg.
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<??><!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.-->    <!-- 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>
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  • 编写持久化类对应的.hbm.
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<??><!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>
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  2、加入Spring

  • 加入spring jar包
  • 加入Spring配置文件
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<??><beans ="http://www.springframework.org/schema/beans"  ="http://www.w3.org/2001/  ="http://www.springframework.org/schema/tx"  ="http://www.springframework.org/schema/aop"  ="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.></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.></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>
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  3、编写测试类

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public class BookDaoImplTest{  private ApplicationContext context=null;  private BookService bookService=null;    {     context= new ClassPath);      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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