Spring整合hibernate4

1：通过maven添加需要的jar包

<dependencies>
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-web</artifactId>
          <version>3.2.9.RELEASE</version>
      </dependency>
      
      <dependency>
          <groupId>org.aspectj</groupId>
          <artifactId>aspectjrt</artifactId>
          <version>1.8.1</version>
      </dependency>

      <dependency>
          <groupId>org.aspectj</groupId>
          <artifactId>aspectjweaver</artifactId>
          <version>1.8.1</version>
      </dependency>
      
      <dependency>
          <groupId>mysql</groupId>
          <artifactId>mysql-connector-java</artifactId>
          <version>5.1.31</version>
      </dependency>

      <dependency>
          <groupId>org.hibernate</groupId>
          <artifactId>hibernate-core</artifactId>
          <version>4.2.0.Final</version>
      </dependency>

      <dependency>
          <groupId>org.apache.openejb</groupId>
          <artifactId>commons-dbcp-all</artifactId>
          <version>1.3</version>
      </dependency>

      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-orm</artifactId>
          <version>3.2.9.RELEASE</version>
      </dependency>
</dependencies>

2：配置实体类与数据库关联

@Entity
@Table(name="user")
public class User {
    @Id
    @GenericGenerator(name="native",strategy="native")
    @GeneratedValue(generator="native")
    private int id;
    
    @Column(name="username")
    private String name;
}

3：dao

public interface UserDao {
    public User findUserById(int id);
}

@Repository
public class UserDaoImpl implements UserDao {
    @Autowired
    private SessionFactory sessionFactory;
    
    public User findUserById(int id) {
        Session session = sessionFactory.openSession();
        Transaction ts = session.beginTransaction();
        
        User user = (User)session.get(User.class, id);
        session.delete(user);
        
        ts.commit();
        session.close();
        return user;
    }
}

4：service

public interface UserService {
    public User getUserById(int id);
}

@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private UserDao userDao;
    
    public User getUserById(int id) {
        return userDao.findUserById(id);
    }
}

5：测试代码

@Component("client")
public class Client {
    @Autowired
    private UserService userService;

    public static void main(String[] args) {
        ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
        
        Client st = (Client)ac.getBean("client");
        UserService userService = st.userService;
        User user = userService.getUserById(1);
        
        System.out.println(user.getName());
    }
}

6：配置文件applicationContext.xml

<?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:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:jpa="http://www.springframework.org/schema/data/jpa"
    xmlns:cache="http://www.springframework.org/schema/cache"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
                        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
                        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
                        http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd
                        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
                        http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd">
    
    <context:component-scan base-package="dao"/>
    <context:component-scan base-package="service"/>
    <context:component-scan base-package="test"/>
    
    <context:property-placeholder location="classpath:dbcp.properties"/>
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="${driverClassName}" />
        <property name="url" value="${url}" />
        <property name="username" value="${mysqlusername}" />
        <property name="password" value="${mysqlpassword}" />
        <property name="maxActive" value="${maxActive}" />
        <property name="maxIdle" value="${maxIdle}" />
        <property name="minIdle" value="${minIdle}" />
        <property name="maxWait" value="${maxWait}" />
        <property name="initialSize" value="${initialSize}" />
        <property name="logAbandoned" value="${logAbandoned}" />
        <property name="removeAbandoned" value="${removeAbandoned}" />
        <property name="removeAbandonedTimeout" value="${removeAbandonedTimeout}" />
        <property name="timeBetweenEvictionRunsMillis" value="${timeBetweenEvictionRunsMillis}" />
        <property name="numTestsPerEvictionRun" value="${numTestsPerEvictionRun}" />
    </bean>
    
    <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
                <prop key="hibernate.show_sql">true</prop>
            </props>
        </property>
        
        <property name="packagesToScan">
            <list>
                <value>po</value>
            </list>
        </property>
    </bean>
</beans>

7：数据库连接池配置dbcp.properties

url=jdbc:mysql://localhost:3306/test
driverClassName=com.mysql.jdbc.Driver
mysqlusername=root
mysqlpassword=root
maxActive=8
minIdle=3
maxIdle=8
maxWait=40000
initialSize=2
logAbandoned=true
removeAbandoned=true 
removeAbandonedTimeout=30
timeBetweenEvictionRunsMillis=10000
numTestsPerEvictionRun=8