[JAVA] About binding of Spring AOP Annotation

Overview

Add your own annotation to the class or method, and use the characters specified in annotation.

--Environment - Spring AOP 4.3.5 - cglib 2.1_3

The acquisition method is different between the annotation attached to the class and the annotation attached to the method, and I stumbled there. ..

Class version

Annotation attached to the class

@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
public @interface ClassAnnotation{
    String value() default "defalut";

Aspect target class

@ClassAnnotation("Class_01")
public class SampleController {

Realization part of Aspect (PointCat is carried out around)

@Around("@within(ann)")
public void classIntercepter(ProceedingJoinPoint pjp, ClassAnnotation ann) throws Throwable{
    System.out.println(ann.value());
    pjp.proceed();

Method version

Annotation attached to the method

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface MethodAnnotation {
    String value() default "defalut";

Aspect target method

@MethodAnnotation("Method_01")
public void sampleMethod(

Realization part of Aspect (

@Around("@annotation(ann)")
public void MethodIntercepter(ProceedingJoinPoint pjp, MethodAnnotation ann) throws Throwable{
    System.out.println(ann.value());
    pjp.proceed();

If you do not use a value, set the full path of annotation class.

Realization of Aspect(class)

@Around("@within(com.example.annotation.ClassAnnotation)")
public void classIntercepter(ProceedingJoinPoint pjp) throws Throwable{
    pjp.proceed();

Realization of Aspect(Method)

@Around("@annotation(com.example.annotation.MethodAnnotation)")
public void classIntercepter(ProceedingJoinPoint pjp) throws Throwable{
    pjp.proceed();

reference:

Slightly special Java annotation How to write Spring AOP pointcut specifier Let's utilize Annotation with AspectJ Part 1