AOP spring source code analysis

public class TraceTest {

    public static void main(String args[]) {
        TraceTest test = new TraceTest();
        test.rpcCall();
    }

    // 虽然 intellij 没有给出提示，但是这个 Trace 还是成功的
    @Trace
    public void rpcCall() {
        System.out.println("call rpc");
    }

}

@Aspect
public class TraceAspect {
    @Pointcut("@annotation(Trace)")
    public void tracePointcutDefinition() {}

    @Around("@annotation(Trace) && execution(* *(..))")
    public Object aroundTrace(ProceedingJoinPoint pjp) throws Throwable {
        Object returnObj = null;

        try {
            System.out.println("before traced method started...");
            returnObj = pjp.proceed();

        } catch (Throwable throwable) {
            throw throwable;
        } finally {
            System.out.println("after traced method executed...");
        }

        return returnObj;
    }
}

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface Trace {
}

//before traced method started...
//call rpc
//after traced method executed...

public class Logging {
    public void beforeAdvice() {
        System.out.println("Going to setup student profile.");
    }

    public void afterAdvice() {
        System.out.println("Student profile has been setup.");
    }

    public void afterReturningAdvice(Object retVal) {
        System.out.println("Returning returning advice ***** :");
    }

    public void AfterThrowingAdvice(IllegalArgumentException ex) {
        System.out.println("There has been an exception: " + ex.toString());
    }
}

public class Student {
    private int age;
    private String name;

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void ExceptionRaised() {
        System.out.println("this is exception message ");
    }
}


public class MainApp {
    public static void main(String[] args) {
        ApplicationContext context =
                new ClassPathXmlApplicationContext("bean.xml");

        Student student = (Student) context.getBean("student");

        student.getName();
        student.getAge();

        student.ExceptionRaised();
    }
}

AbstractAutowireCapableBeanFactory.doCreateBean()
AbstractAutowireCapableBeanFactory.initializeBean()
AbstractAutowireCapableBeanFactory.postProcessBeforeInitialization()
AbstractAutowireCapableBeanFactory.postProcessAfterInitialization()
    AbstractAdvisorAutoProxyCreator.createProxy
        DefaultAopProxyFactory.createAopProxy // 这里选择 JdkDynamicProxy 或者 CGLibProxy
            createProxy// 根据具体选取的 AOP proxy 构造代理实例