spring 学习3-Spring AOP

Using @AspectJ-Style Annotations

@Component("myDependency") 
public class MyDependency { 
public void foo(int intValue) { 
System.out.println("foo(int): " + intValue); 
} 
public void bar() { 
System.out.println("bar()"); 
} 
}

 

@Component("myBean") 
public class MyBean { 
private MyDependency myDependency; 
public void execute() { 
myDependency.foo(100); 
myDependency.foo(101); 
myDependency.bar(); 
} 
@Autowired 
public void setDep(MyDependency myDependency) { 
this.myDependency = myDependency; 
} 
}

 

@Component 
@Aspect 
public class MyAdvice { 
@Pointcut("execution(* com.apress.prospring3.ch7..foo*(int)) && args(intValue)") 
public void fooExecution(int intValue) { 
} 
@Pointcut("bean(myDependency*)") 
public void inMyDependency() { 
} 
@Before("fooExecution(intValue) && inMyDependency()") 
public void simpleBeforeAdvice(JoinPoint joinPoint, int intValue) { 
// Execute only when intValue is not 100 
if (intValue != 100) { 
System.out.println("Executing: " + 
joinPoint.getSignature().getDeclaringTypeName() + " " 
+ joinPoint.getSignature().getName() + " argument: " + intValue); 
} 
} 
@Around("fooExecution(intValue) && inMyDependency()") 
public Object simpleAroundAdvice(ProceedingJoinPoint pjp, int intValue) throws Throwable { 
System.out.println("Before execution: " + 
pjp.getSignature().getDeclaringTypeName() + " " 
+ pjp.getSignature().getName() 
+ " argument: " + intValue); 
Object retVal = pjp.proceed(); 
System.out.println("After execution: " + 
pjp.getSignature().getDeclaringTypeName() + " " 
+ pjp.getSignature().getName() 
+ " argument: " + intValue); 
return retVal; 
} 
}

 

<aop:aspectj-autoproxy/> <!--inform Spring to scan for 
@AspectJ-style annotations-->
<context:component-scan base-package="com.apress.prospring3.ch7.aspectjannotation"/> 

 

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