봄 각종 조언 예시

직접 코드

package com.dada.test.spring.aop.advisor;

import java.lang.reflect.Method;
import org.springframework.aop.AfterReturningAdvice;
 
public class MyAfterAdvice implements AfterReturningAdvice
{

	public void afterReturning(Object result, Method method,
			Object[] parameter, Object target) throws Throwable {
		System.out.println("==============after return==============");
		System.out.println("result:" + result + ";method:" + method
				+ ";parameter:" + parameter + ";target:" + target);
	}

}

 

package com.dada.test.spring.aop.advisor;

import java.util.HashSet;
import java.util.Set;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
 
public class MyAroundAdvice implements MethodInterceptor
{
    private Set set=new HashSet();
    public Object invoke(MethodInvocation method) throws Throwable
    {
        set.add(method);
        System.out.println("============around before==========");
        Object result=method.proceed();
        System.out.println("============around after==========");
        return result;
    }
}

 

package com.dada.test.spring.aop.advisor;

import java.lang.reflect.Method;
import org.springframework.aop.MethodBeforeAdvice;
 
public class MyBeforeAdvice implements MethodBeforeAdvice
{
   
    public void before(Method method, Object[] parameters, Object target) throws Throwable
    {
        System.err.println("==========before===========");
        System.out.println(method.getName());
        System.out.println(parameters.length);
        System.out.println(target);
    }
}

 

package com.dada.test.spring.aop.advisor;

import org.springframework.aop.ThrowsAdvice;
import com.dada.test.spring.aop.MyException;

public class MyThrowsAdvice implements ThrowsAdvice
{
    public void afterThrowing(MyException e)
    { //         ，            
        System.err.println("MyThrowsAdvice:"+e.toString());
    }
 
    public void afterThrowing(RuntimeException e)
    {
        //         ，            
        System.err.print("RuntimeException!");
    }
}

 

package com.dada.test.spring.aop.service;

public interface IService {

	String doSth();
	  void doA();
}

 

package com.dada.test.spring.aop.service;

import com.dada.test.spring.aop.MyException;

public class MyServiceImpl implements IService{

	 public String doSth()
	  {
	    System.out.println(this);
	    System.out.println("MyServiceImpl doSth");
	    return "cindy";
	  }

	 public void doA()
	  {
		System.out.println("MyServiceImpl doA");
	    throw new MyException("111111111");
	  }

}

 

    
    
    
    
    
    
        
        
        
        
          
            beforeAdvice
            aroundAdvice
            afterAdvice
            afterAdvice
            throwsAdvice
        
        
    

 

package com.dada.test.spring.aop;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.dada.test.spring.aop.service.IService;

public class TestSpringAop {

public static void main(String[] args) throws Exception
{
    ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext(new String[]
    {
        "com/dada/test/spring/aop/aop-context.xml"
    });
    IService ser = (IService) ctx.getBean("invoker");
    String rs = ser.doSth();
    System.out.println("rs="+rs.toString());
   
    try
    {
        ser.doA();
    }
    catch (Throwable t)
    {
        t.printStackTrace();
    }
    
}

}

실행 결 과 는 다음 과 같 습 니 다.
2013 - 7 - 18 23: 21: 06 org. springframework. context. support. AbstractApplications Context prepare새로 고침 정보: 새로 고침 org. springframework. context. support.ClassPathXmlApplicationContext@14ed9ff: display name [org.springframework.context.support.ClassPathXmlApplicationContext@14ed9ff]; startup date [Thu Jul 18 23:21:06 CST 2013]; root of context hierarchy 2013 - 7 - 18 23: 21: 06 org. springframework. beans. factory. xml. XmlBeanDefinitionReader loadBeanDefinitions 정보: class path resource [com / data / test / spring / op / aop - context. xml]2013 - 7 - 18 23: 21: 07 org. springframework. context. support. AbstractApplicationContext 획득 FreshBeanFactory 정보: Bean factory for application context [org. springframework. context. support.ClassPathXmlApplicationContext@14ed9ff]: org.springframework.beans.factory.support.DefaultListableBeanFactory@12152e62013 - 7 - 18 23: 21: 07 org. springframework. beans. factory. support. DefaultListableBeanFactory preInstantiateSingletons 정보: org. springframework. beans. factory. support 에서 싱글 톤 을 미리 설치 합 니 다.DefaultListableBeanFactory@12152e6: defining beans [beforeAdvice,aroundAdvice,afterAdvice,throwsAdvice,servTarget,invoker]; root of factory hierarchy 2013 - 7 - 18 23: 21: 07 org. springframework. aop. framework. ProxyFactory Bean getObject 경고: singleton 대상 이 아 닌 프 록 시 를 사용 하 는 것 은 바람 직 하지 않 은 경우 가 많 습 니 다. 'targetName' 속성 을 설정 하여 프로 토 타 입 프 록 시 를 사용 합 니 다. = = = = = = = = before = = = = = = = = = = = = = doSth 0. com. dada. test. spring. aop. service.MyServiceImpl@6f7ce9 ============around before==========com.dada.test.spring.aop.service.MyServiceImpl@6f7ce9 MyServiceImpl doSth ==============after return============== result:cindy;method:public abstract java.lang.String com.dada.test.spring.aop.service.IService.doSth();parameter:[Ljava.lang.Object;@1dfafd1;target:com.dada.test.spring.aop.service.MyServiceImpl@6f7ce9 ==============after return============== result:cindy;method:public abstract java.lang.String com.dada.test.spring.aop.service.IService.doSth();parameter:[Ljava.lang.Object;@8fce95;target:com.dada.test.spring.aop.service.MyServiceImpl@6f7ce9 ============around after========== rs=cindy ==========before=========== doA 0com.dada.test.spring.aop.service.MyServiceImpl@6f7ce9 ============around before========== MyServiceImpl doA MyThrowsAdvice:com.dada.test.spring.aop.MyException: 111111111 com.dada.test.spring.aop.MyException: 111111111  at com.dada.test.spring.aop.service.MyServiceImpl.doA(MyServiceImpl.java:17)  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)  at java.lang.reflect.Method.invoke(Method.java:585)  at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:304)  at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)  at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)  at org.springframework.aop.framework.adapter.ThrowsAdviceInterceptor.invoke(ThrowsAdviceInterceptor.java:126)  at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)  at org.springframework.aop.framework.adapter.AfterReturningAdviceInterceptor.invoke(AfterReturningAdviceInterceptor.java:50)  at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)  at org.springframework.aop.framework.adapter.AfterReturningAdviceInterceptor.invoke(AfterReturningAdviceInterceptor.java:50)  at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)  at com.dada.test.spring.aop.advisor.MyAroundAdvice.invoke(MyAroundAdvice.java:15)  at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)  at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:50)  at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)  at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)  at $Proxy0.doA(Unknown Source)  at com.dada.test.spring.aop.TestSpringAop.main(TestSpringAop.java:21)
after return 이 두 번 나 타 났 습 니 다. 어떤 이유 인지 생각해 보 세 요.