利用Spring2.0的AOP功能向Domain Model注入DAO

目前在Spring 2.0里，可以向Domain Model对象里注入DAO，让POJO真正变成充血模型成为现实，这就意味著可以直接在POJO对象里进行业务逻辑和事物托管，只要我们在代码里用new操作符构造出来的对象都可以给Spring容器进行托管、具体使用如下：

@Configurable(autowire=Autowire.BY_TYPE) // 加上基于jdk1.5的注解

public class User {

  private int id;

  private String name;

 

  private UserDao userDao;

 

  public int getId() {

    return this.id;

  }

 

  public void setId(int id) {

    this.id = id;

  }

 

  public String getName() {

   return this.name;

  }

 

  public void setName(String name) {

    this.name = name;

  }

 

  public UserDao getUserDao() {

    return userDao;

  }

 

  public void setUserDao(UserDao userDao) {

    this.userDao = userDao;

  }

}

 

public interface UserDao {

  public List<User> loadAll();

}

 

public class UserDaoImpl extends HibernateDaoSupport {

  public List<User> loadAll() {

    .......................

    .......................

  }

}

 

spring.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:tx="http://www.springframework.org/schema/tx"
 xmlns:aop="http://www.springframework.org/schema/aop"
 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> 

  <aop:spring-configured />

  <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:3306/test?useUnicode=true&amp;characterEncoding=UTF-8" />
  <property name="username" value="root" />
  <property name="password" value="avaJevoLI" />
  <property name="maxWait" value="120000" />
  <property name="maxIdle" value="10" />
  <property name="maxActive" value="500" />
  <property name="initialSize" value="50" />
 </bean>

 <bean id="sessionFactory"
  class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
  <property name="dataSource">
   <ref bean="dataSource" />
  </property>
  <property name="annotatedClasses">
   <list>
    <value>com.zhenuu.model.User</value>
   </list>
  </property>
  <!--
   <property name="annotatedPackages">
   <list>
   <value>test.package</value>
   </list>
   </property>
  -->
  <property name="hibernateProperties">
   <props>
    <prop key="hibernate.dialect">
     org.hibernate.dialect.MySQLInnoDBDialect
    </prop>
    <prop key="hibernate.show_sql">true</prop>
   </props>
  </property>
 </bean>

 

 <bean id="userDao" class="com.zhenuu.user.dao.UserDaoImpl">
  <property name="sessionFactory" ref="sessionFactory" />
 </bean>

 

 <bean id="user" class="com.zhenuu.user.model.User">
  <property name="userDao" ref="userDao" />
 </bean>

 

</beans>

 

client.java

public class Client {

  public static void main(String...args) {

    new ClassPathXmlApplicationContext(new String[]{"classpath:spring.xml"});

    User user = new User();

    user.setId(10);

    List<User> users = user.loadAll();

    for(User user1 : users) {

      System.out.println(user1.getName());

    }

  }

}

 

运行：

java -javaagent:G:\我的开发包\spring\spring-framework-2.0-rc2\lib\aspectj\aspectjweaver.jar Client