Spring 3.2 AOP - annotation interception methods

Question

I am trying to intercept some method labeled w / with user annotation, and the reason you are reading this is because I cannot get it to work. I read simple examples, but can't make it work.

Here is my code.

MyAnnotation.java:

@Retention(RetentionPolicy.RUNTIME) @Target(ElementType.METHOD) public @interface MyAnnotation { String value() default ""; String key() default ""; String condition() default ""; } 

MyAspect.java:

 @Aspect public class MyAspect { @Pointcut(value="execution(public * *(..))") public void anyPublicMethod() { } @Around("anyPublicMethod() && @annotation(myAnnotation)") public Object process(ProceedingJoinPoint jointPoint, MyAnnotation myAnnotation) throws Throwable { System.out.println("In AOP process"); return 5; //jointPoint.proceed(); } } 

spring -config.xml:

 <beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:c="http://www.springframework.org/schema/c" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:p="http://www.springframework.org/schema/p" xmlns:cache="http://www.springframework.org/schema/cache" xmlns:task="http://www.springframework.org/schema/task" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-3.2.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.2.xsd"> ... <context:component-scan base-package="com.myapp"> <context:include-filter type="annotation" expression="org.aspectj.lang.annotation.Aspect"/> </context:component-scan> <aop:aspectj-autoproxy proxy-target-class="true" /> <bean id="myAspect" class="com.myapp.annotation.MyAspect" /> ... 

MyComponent.java:

 @Component public class MyComponent { @MyAnnotation(value="valtest", key="keytest", condition="contest") public int add(int i, int j) { System.out.println("Executing annotation.add"); return i+j; } } 

Test code:

 final MyComponent m = new MyComponent(); assertTrue(5 == m.add(0, 1)); // Here m.add(...) always returns 1 instead of 5. 

As a side note, I tried to define my pointcut in various ways, using and without using anyPublic () method and its pointcut point, but none of them worked for me:

• @Around("@annotation(com.myapp.annotation.MyAnnotation)") public Object process(ProceedingJoinPoint jointPoint) throws Throwable { .. }

• @Around(value="@annotation(myAnnotation)", argNames="myAnnotation") public Object process(ProceedingJoinPoint jointPoint, MyAnnotation myAnnotation) throws Throwable { .. }

• @Around("execution(* com.myapp.*.*(..)) && @annotation(com.myapp.annotation.MyAnnotation)") public Object process(ProceedingJoinPoint jointPoint) throws Throwable { .. }

What am I doing wrong?

Answer 1

In your test code, you do not allow Spring to create MyComponent , but instead you use the new operator. You must access MyComponent from the Spring ApplicationContext .

 public class SomeTest { public static void main(String[] args) throws Exception { final ApplicationContext appContext = new ClassPathXmlApplicationContext("spring-config.xml"); final MyComponent myComponent = appContext.getBean(MyComponent.class); //your test here... } } 

If you are not getting your component from Spring, how do you expect it to proxy?