Spring技术详解.ppt

Spring的体系结构,Spring核心,AOP,ORM,Spring Web,Application Context,Spring DAO,MVC,在Spring中装配DAO,在Spring中装配Service, PROPAGATION_REQUIRED,readOnly PROPAGATION_REQUIRED,readOnly PROPAGATION_REQUIRED ,初始化Bean,public class Car private String brand; private String color; private int maxSpeed; /省略get和set属性 ,初始化Bean配置文件,通过XmlBeanFactory实现类启动SpringIoC容器,public static void main(String args) Resource res = new ClassPathResource(“com/baobaotao/beanfactory/beans.xml“); BeanFactory bf = new XmlBeanFactory(res); Car car = (Car)bf.getBean(“car“); roduce(); ,Bean的属性注入,package com.baobaotao.ditype; public class Car public String brand; private double price; private int maxSpeed; public String getBrand() return brand; public void setBrand(String brand) this.brand = brand; /省略其他属性的Set和Get方法 ,Bean的属性注入配置, 红旗CA72 200 20000.00 ,单实例模式,Car,A.car,B.car,C.car,getBean(“Car”),非单实例模型,Car,A.car,B.car,C.car,getBean(“Car”),Car,Car,Car,前置增强Waiter,package com.baobaotao.advice; public interface Waiter void greetTo(String name); void serveTo(String name); ,前置增强NaiveWaiter,package com.baobaotao.advice; public class NaiveWaiter implements Waiter public void greetTo(String name) System.out.println(“greet to “+name+“.“); public void serveTo(String name) System.out.println(“serving “+name+“.“); ,前置增强GreetingBeforeAdvice,package com.baobaotao.advice; import java.lang.reflect.Method; import org.springframework.aop.MethodBeforeAdvice; public class GreetingBeforeAdvice implements MethodBeforeAdvice public void before(Method method, Object args, Object obj) throws Throwable String clientName = (String)args0; System.out.println(“How are you！Mr.“+clientName+“.“); ,前置增强织入后,import org.springframework.aop.BeforeAdvice; import org.springframework.aop.framework.ProxyFactory; public class TestBeforeAdvice public static void main(String args) Waiter target = new NaiveWaiter(); BeforeAdvice advice = new GreetingBeforeAdvice(); ProxyFactory pf = new ProxyFactory(); pf.setInterfaces(target.getClass().getInterfaces(); pf.setOptimize(true); pf.setTarget(target); pf.addAdvice(advice); Waiter proxy = (Waiter)pf.getProxy(); proxy.greetTo(“John“); proxy.serveTo(“Tom“); ,前置增强运行的最终结果,How are you! Mr.John! Greet to John How are you! Mr.Tom! Serving Tom,通过ProxyFactoryBean配置代理, com.baobaotao.advice.Waiter ,PreGreetingAspect切面,package com.baobaotao.aspectj.example; import org.aspectj.lang.annotation.Aspect; import org.aspectj.lang.annotation.Before; Aspect public class PreGreetingAspect Before(“execution(* greetTo()“) public void beforeGreeting() System.out.println(“How are you“); ,AspectJProxyTest,package com.baobaotao.aspectj.example; import org.springframework.aop.aspectj.annotation.AspectJProxyFactory; import com.baobaotao.NaiveWaiter; import com.baobaotao.Waiter; public class AspectJProxyTest public static void main(String args) Waiter target = new NaiveWaiter(); AspectJProxyFactory factory = new AspectJProxyFactory(); factory.setTarget(target); factory.addAspect(PreGreetingAspect.class); Waiter proxy = factory.getProxy(); proxy.greetTo(“John“); proxy.serveTo(“John“); ,配置使用AspectJ切面,SpringDao模型,Service,Dao,JDBCDao,HibernateDao,IbatisDao,SpringDao模板和回调,Dao模板,Dao回调,1.准备资源,2.启动,5.提交回滚事务,6.处理异常 关闭资源,3.数据访问,4.返回数据,使用Transactional注解的业务类,import com.baobaotao.service.BbtForum; Transactional public class BbtForumImpl implements BbtForum private ForumDao forumDao; private TopicDao topicDao; private PostDao postDao; public void addTopic(Topic topic) throws Exception topicDao.addTopic(topic); postDao.addPost(topic.getPost(); public Forum getForum(int forumId) return forumDao.getForum(forumId); ,applicationContext-anno.xml：使事务注解生效,Spring风格的Hibernate配置, classpath:/com/baobaotao/domain/hbm org.hibernate.dialect.MySQLDialect true true ,使用HibernateTemplateDao,Public class ForumHibernateDao extends HibernateDaoSupport implements ForumDao public void addForum(Forum forum) getHibernateTemplate().save(forum); public void updateForum(Forum forum) getHibernateTemplate().update(forum); public Forum getForum(int forumId) return (Forum) getHibernateTemplate().load(Forum.class, forumId); public long getForumNum() Object obj =getHibernateTemplate().execute(new HibernateCallback() public Object doInHibernate(Session session) throws HibernateException, SQLException return session.createQuery(“select count(f.forumId) from Forum f“) .list() .iterator(); ); return (Long)obj; /使用Template接口方法的版本 / Iterator iter = getHibernat