Spring4整合Hibernate5详细步骤

下面是“Spring4整合Hibernate5详细步骤”的攻略，分别针对Spring和Hibernate进行详细讲解。

Spring配置

1. 在pom.xml文件中添加Spring和Hibernate的依赖：

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>4.3.5.RELEASE</version>
</dependency>

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-core</artifactId>
    <version>5.2.5.Final</version>
</dependency>

1. 创建DataSource对象：

<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/test" />
    <property name="username" value="root" />
    <property name="password" value="root" />
</bean>

1. 配置SessionFactory对象：

<bean id="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="packagesToScan" value="com.example.entity" />
    <property name="hibernateProperties">
        <props>
            <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
            <prop key="hibernate.show_sql">true</prop>
        </props>
    </property>
</bean>

1. 配置TransactionManager对象：

<bean id="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
    <property name="sessionFactory" ref="sessionFactory" />
</bean>

Hibernate配置

1. 配置hibernate.cfg.xml文件：

<hibernate-configuration>
    <session-factory>
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/test</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.connection.password">root</property>
        <property name="hibernate.show_sql">true</property>
        <property name="hibernate.format_sql">true</property>
        <mapping class="com.example.entity.User" />
    </session-factory>
</hibernate-configuration>

1. 创建实体类User：

@Entity
@Table(name="user")
public class User {
    @Id
    private int id;
    private String username;
    private String password;
    // 省略getter和setter方法
}

整合配置

1. 配置applicationContext.xml文件：

<bean id="userDao" class="com.example.dao.impl.UserDaoImpl">
    <property name="sessionFactory" ref="sessionFactory" />
</bean>
<bean id="userService" class="com.example.service.impl.UserServiceImpl">
    <property name="userDao" ref="userDao" />
</bean>

1. 创建UserDao层和UserService层：

用户数据访问接口UserDao：

public interface UserDao {
    void save(User user);
    List<User> getUsers();
}

用户数据访问实现类UserDaoImpl：

@Repository
public class UserDaoImpl implements UserDao {
    @Autowired
    private SessionFactory sessionFactory;

    @Override
    public void save(User user) {
        sessionFactory.getCurrentSession().save(user);
    }

    @Override
    public List<User> getUsers() {
        Query query=sessionFactory.getCurrentSession().createQuery("from User");
        return query.list();
    }
}

用户服务接口UserService：

public interface UserService {
    void save(User user);
    List<User> getUsers();
}

用户服务实现类UserServiceImpl：

@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private UserDao userDao;

    @Override
    public void save(User user) {
        userDao.save(user);
    }

    @Override
    public List<User> getUsers() {
        return userDao.getUsers();
    }
}

示例

以下是两个示例：

1. 添加用户：

User user=new User();
user.setUsername("test");
user.setPassword("test");
userService.save(user);

1. 获取用户：

List<User> users=userService.getUsers();
for (User user : users) {
    System.out.println(user.getUsername()+":"+user.getPassword());
}