spring_aop_annotaion

demo:

description:注解方式实现aop

Aspect.java

/**
 *切面
 */
@Component
@org.aspectj.lang.annotation.Aspect
public class Aspect {
    
    private Logger logger = Logger.getLogger(Aspect.class);
    
    @Pointcut(value="execution(* com.asarja.aop.annotation.*.*(..))")
    public void pointcut(){
        
    }
    
    /**
     * 前置通知
     */
    @Before(value="execution(* com.asarja.aop.annotation.*.*(..))")
    public void doBefore(JoinPoint jp){
        logger.debug("before "+jp.getTarget().getClass().getName()+"."+jp.getSignature().getName()+" execute");
    }
    
    /**
     * 后置通知
     */
    @After(value="execution(* com.asarja.aop.annotation.*.*(..))")
    public void doAfter(JoinPoint jp){
        logger.debug("finally after "+jp.getTarget().getClass().getName()+"."+jp.getSignature().getName()+" execute");
    }
    
    /**
     * 环绕通知
     */
    @Around(value="execution(* com.asarja.aop.annotation.*.*(..))")
    public void doAround(ProceedingJoinPoint pjp) throws Throwable{
        logger.debug("around before "+pjp.getTarget().getClass().getName()+"."+pjp.getSignature().getName()+" execute");
        pjp.proceed();
        logger.debug("around after "+pjp.getTarget().getClass().getName()+"."+pjp.getSignature().getName()+" execute");
    }
    
    /**
     * 后置返回通知
     */
    @AfterReturning(value="execution(* com.asarja.aop.annotation.*.*(..))")
    public void doAfterRetuning(JoinPoint jp){
        logger.debug("after return "+jp.getTarget().getClass().getName()+"."+jp.getSignature().getName()+" execute");
    }
    
    /**
     * 抛出异常后通知
     */
    @AfterThrowing(value="execution(* com.asarja.aop.annotation.*.*(..))",throwing="e")
    public void doThrowing(JoinPoint jp, Throwable e){
        logger.debug("after throwing "+jp.getTarget().getClass().getName()+"."+jp.getSignature().getName()+" execute");
        logger.debug(e.getMessage());
    }
    
}

Dao.java

public interface Dao<T> {
    
    void save(T t);
    
    void select(T t);
    
    void delete(T t);
}

DaoImpl.java

@Component
public class DaoImpl implements Dao<Mp3>{

    @Override
    public void save(Mp3 t) {
        if(t.getId().equals(1)){
            throw new RuntimeException("save() 运行时异常");
        }
        System.out.println("execute save()");
    }

    @Override
    public void select(Mp3 t) {
        System.out.println("execute select()");
    }

    @Override
    public void delete(Mp3 t) {
        System.out.println("execute delete()");
    }

}

Mp3.java

public class Mp3 implements Serializable{

    private static final long serialVersionUID = 1L;

    private Integer id;
    
    private String url;

    public Mp3() {
    }

    public Mp3(Integer id, String url) {
        this.id = id;
        this.url = url;
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }
    
    
}

applicationContext-aop.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"
    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-3.0.xsd 
          http://www.springframework.org/schema/aop     
          http://www.springframework.org/schema/aop/spring-aop-3.0.xsd"
    default-autowire="byName">
    
   	<context:component-scan base-package="com.asarja.aop.annotation" />
   	<!-- 打开aop注解 -->
   	<aop:aspectj-autoproxy />
    
</beans>

Test.java

public class Test {
    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("com/asarja/aop/annotation/applicationContext-aop.xml");
        Dao<Mp3> dao = (Dao<Mp3>)context.getBean("daoImpl");
        dao.delete(new Mp3(2,"http://,,,,,"));
        dao.select(new Mp3(1,"http://,,,,,"));
        dao.save(new Mp3(1,"http://,,,,,"));
    }
}

结果：

2013-04-09 16:32:13,535 [main] DEBUG com.asarja.aop.annotation.Aspect - before com.asarja.aop.annotation.DaoImpl.delete execute
2013-04-09 16:32:13,535 [main] DEBUG com.asarja.aop.annotation.Aspect - around before com.asarja.aop.annotation.DaoImpl.delete execute
execute delete()
2013-04-09 16:32:13,536 [main] DEBUG com.asarja.aop.annotation.Aspect - finally after com.asarja.aop.annotation.DaoImpl.delete execute
2013-04-09 16:32:13,536 [main] DEBUG com.asarja.aop.annotation.Aspect - around after com.asarja.aop.annotation.DaoImpl.delete execute
2013-04-09 16:32:13,536 [main] DEBUG com.asarja.aop.annotation.Aspect - after return com.asarja.aop.annotation.DaoImpl.delete execute
2013-04-09 16:32:13,537 [main] DEBUG com.asarja.aop.annotation.Aspect - before com.asarja.aop.annotation.DaoImpl.select execute
2013-04-09 16:32:13,537 [main] DEBUG com.asarja.aop.annotation.Aspect - around before com.asarja.aop.annotation.DaoImpl.select execute
execute select()
2013-04-09 16:32:13,537 [main] DEBUG com.asarja.aop.annotation.Aspect - finally after com.asarja.aop.annotation.DaoImpl.select execute
2013-04-09 16:32:13,537 [main] DEBUG com.asarja.aop.annotation.Aspect - around after com.asarja.aop.annotation.DaoImpl.select execute
2013-04-09 16:32:13,537 [main] DEBUG com.asarja.aop.annotation.Aspect - after return com.asarja.aop.annotation.DaoImpl.select execute
2013-04-09 16:32:13,537 [main] DEBUG com.asarja.aop.annotation.Aspect - before com.asarja.aop.annotation.DaoImpl.save execute
2013-04-09 16:32:13,538 [main] DEBUG com.asarja.aop.annotation.Aspect - around before com.asarja.aop.annotation.DaoImpl.save execute
2013-04-09 16:32:13,538 [main] DEBUG com.asarja.aop.annotation.Aspect - finally after com.asarja.aop.annotation.DaoImpl.save execute
2013-04-09 16:32:13,538 [main] DEBUG com.asarja.aop.annotation.Aspect - after throwing com.asarja.aop.annotation.DaoImpl.save execute
2013-04-09 16:32:13,538 [main] DEBUG com.asarja.aop.annotation.Aspect - save() 运行时异常