Spring AOP demo (maven)

可以直接运行test
项目见附件

package com.xxp.aoptest.aspects;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.stereotype.Component;

@Component
@Aspect
public class MyAspect {

	@Pointcut(value="execution(* com.xxp.aoptest.programs.*.*(..)) && args(value)")//匹配com.xxp.aoptest.programs包中的所有类中的所有方法，并获得形参value
//	@Pointcut(value="execution(* com.xxp.aoptest.programs.MyProgram.show(..))")//匹配com.xxp.aoptest.programs.MyProgram类中的所有show()方法(任意个参数) --pointcut2
//	@Pointcut(value="execution(* com.xxp.aoptest.programs.MyProgram.show(String))")//匹配com.xxp.aoptest.programs.MyProgram类中的所有show(String value)方法 --pointcut3
	public void showPoint(String value){}//声明切入点，方法名showPoint(value)为该切入点名称
	/* 注意 
	 * 如果不需要传递参数,则通知方法也要对应。(比如用以上pointcut3时，切入点也应修改为public void showPoint(){})
	 * */	

	@Before(value="showPoint(value)")//value值为切入点名称
	public void doBefore(JoinPoint joinPoint,String value) throws Throwable{
		System.out.println("before value="+value);
		joinPoint.getArgs();//也可以用这个方法获得所有参数，这是就不需要在pointcut中使用args匹配了
	}
	
	@After(value="showPoint(value)")
	public void doAfter(JoinPoint joinPoint,String value){
		System.out.println("after value="+value);
		
	}
	
	@AfterReturning(value="showPoint(value)",returning="returnValue")
	public void doAfterReturning(int returnValue,String value){
		System.out.println("after returning:"+returnValue);
	}
	
	@AfterThrowing(value="showPoint(value)",throwing="error")
	public void doAfterThrowing(JoinPoint joinPoint,Throwable error,String value){
		System.out.println("error:"+error);
	}
	
	@Around("showPoint(value)")
	public void doAround(ProceedingJoinPoint proceedingJoinPoint,String value) throws Throwable{
		System.out.println("around start");
		proceedingJoinPoint.proceed();
//		proceedingJoinPoint.proceed(new Object[]{"reValue"});//将value的值改为reValue
		System.out.println("around end");
	}
}

package com.xxp.aoptest.programs;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class MyProgram {

	@RequestMapping(value="/show",method=RequestMethod.GET)
	@ResponseBody
	public int show(String value){
		System.out.println("MyProgram show("+value+")");
		String test = "test";
		if (value.equals("SB")) {
			throw new RuntimeException();
		}
		value = "GNB";
		return 1;
	}
	
	public int show(){
		System.out.println("MyProgram show()");
		String test = "test";
		return 1;
	}
	
	
	
}