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== Annotation Scope ==

File: context.xml



<source lang="java">
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd">
<aop:aspectj-autoproxy />
<context:component-scan base-package="bean">
<context:include-filter type="annotation" expression="org.aspectj.lang.annotation.Aspect"/>
</context:component-scan>

</beans></source>



== AOP Annotation ==

File: Main.java



<source lang="java">
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.reflect.Method;
import org.springframework.aop.Advisor;
import org.springframework.aop.AfterReturningAdvice;
import org.springframework.aop.MethodBeforeAdvice;
import org.springframework.aop.framework.ProxyFactory;
import org.springframework.aop.support.DefaultPointcutAdvisor;
import org.springframework.aop.support.annotation.AnnotationMatchingPointcut;
public class Main {
public static void main(String[] args) {
SampleBean target = new SampleBean();
AnnotationMatchingPointcut pc = new AnnotationMatchingPointcut(null, SimpleAnnotation.class);
Advisor advisor = new DefaultPointcutAdvisor(pc, new SimpleBeforeAdvice());
ProxyFactory pf = new ProxyFactory();
pf.setTarget(target);
pf.addAdvisor(advisor);
SampleBean proxy = (SampleBean) pf.getProxy();
proxy.getName();
proxy.getHeight();
}
}
class SimpleBeforeAdvice implements MethodBeforeAdvice {
public void before(Method method, Object[] args, Object target) throws Throwable {
System.out.println("Before method " + method);
}
}
@SimpleAnnotation
class SampleBean {
@SimpleAnnotation
public String getName() {
return "AAA";
}
public void setName(String name) {
}
public int getHeight() {
return 201;
}
}
@Target( { ElementType.METHOD, ElementType.TYPE })
@Retention(RetentionPolicy.RUNTIME)
@interface SimpleAnnotation {
}
class AnnotationAfterAdvice implements AfterReturningAdvice {
public void afterReturning(Object returnValue, Method method, Object[] args, Object target)
throws Throwable {
System.out.print("After annotated method: " + method);
}
}</source>



== Aspect Annotation ==

File: context.xml



<source lang="java">
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd">
<aop:aspectj-autoproxy />
<context:component-scan base-package="bean">
<context:include-filter type="annotation" expression="org.aspectj.lang.annotation.Aspect"/>
</context:component-scan>

</beans></source>



== Aspect Annotation Pointcut Around After ==

File: context.xml



<source lang="java">
<?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:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd">
<bean id="test" class="TestBean"/>
<bean class="LoggingAspectPC">
<property name="beforeMessage" value="Before %s %s"/>
<property name="afterMessage" value="After %s %s"/>
</bean>
<aop:aspectj-autoproxy />
</beans></source>



== Aspect Filter ==

File: context.xml



<source lang="java">
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<context:component-scan base-package="bean">
<context:include-filter type="annotation" expression="bean.Magic"/>
<context:include-filter type="assignable" expression="bean.ruponentMarker"/>
<context:include-filter type="aspectj" expression="* void bean.*Service*(..)"/>
</context:component-scan>
</beans></source>



== AspectJ AutoProxy ==

File: context.xml



<source lang="java">
<?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:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd">
<bean id="test" class="TestBean2">
<property name="simpleBean" ref="simple"/>
</bean>
<bean id="simple" class="SimpleBean"/>
<bean class="Main"/>
<aop:aspectj-autoproxy/>
</beans></source>



== AspectJ Expression Pointcut ==

File: Main.java



<source lang="java">
import org.springframework.aop.Advisor;
import org.springframework.aop.aspectj.AspectJExpressionPointcut;
import org.springframework.aop.framework.ProxyFactory;
import org.springframework.aop.support.DefaultPointcutAdvisor;
import bean.MyClass;
import bean.SimpleAfterAdvice;
public class Main {
public static void main(String[] args) {
MyClass target = new MyClass();
AspectJExpressionPointcut pc = new AspectJExpressionPointcut();
pc.setExpression("execution(* bean..*.get*(..))");
Advisor advisor = new DefaultPointcutAdvisor(pc, new SimpleAfterAdvice());
ProxyFactory pf = new ProxyFactory();
pf.setTarget(target);
pf.addAdvisor(advisor);
MyClass proxy = (MyClass) pf.getProxy();
System.out.println(proxy.getName());
proxy.setName("New Name");
System.out.println(proxy.getHeight());
}
}</source>



== Spring AOP Examples ==

== Spring Aspect Logging ==

File: IBusinessLogic.java



<source lang="java">
public interface IBusinessLogic
{
public void foo();

public void bar() throws BusinessLogicException;
}</source>



== Spring Tracing Aspect ==

File: IBusinessLogic.java



<source lang="java">
public interface IBusinessLogic
{
public void foo();
}</source>

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