Question

我试图在我的IDE上获得一个简单的AOP示例。

下面是我的代码。

我在下面收到此错误。

请帮助我理解原因。

org.springframework.beans.factory.BeanCreationException：创建名称为“ org.springframework.context.event.internalEventListenerProcessor”的bean时出错：bean的初始化失败；嵌套异常是java.lang.IllegalArgumentException：在切入点:: 0形式上未绑定的错误在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:564）〜[spring-beans-4.3.18.RELEASE.jar：4.3.18.RELEASE] < / p>

AotSpringMain

@SpringBootApplication
public class AotSpringMain {

    public static void main(String[] args) {
        ApplicationContext ctx = SpringApplication.run(AotSpringMain.class, args);
        HumanFactory humanFactory = (HumanFactory)ctx.getBean("humanFactory");
        System.out.println(humanFactory.getFemale().getName());
        humanFactory.getFemale().setName("aaa");
        System.out.println(humanFactory.getFemale().getName());

    }
}

LoggingAspect

@Aspect
@Component
public class LoggingAspect {

    @Before("execution(* com.my_aop_example.HumanFactory.*(..))")
    public void logBefore(JoinPoint joinPoint, Object result) {

        System.out.println("Log before start");
        System.out.println("Name: " + joinPoint.getSignature().getName());
        System.out.println("Log before end");

    }

}

HumanFactory

package com.my_aop_example;


import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;

@Service
public class HumanFactory {
    @Autowired
    @Qualifier("Male")
    Human Male;
    @Autowired
    @Qualifier("Female")
    Human female;

    public Human getMale() {
        return Male;
    }

    public Human getFemale() {
        return female;
    }

Answer 1

没有参数Object result

  @Before("execution(* com.my_aop_example.HumanFactory.*(..))")
  public void logBefore(JoinPoint joinPoint) {

    System.out.println("Log before start");
    System.out.println("Name: " + joinPoint.getSignature().getName());
    System.out.println("Log before end");

  }

尝试使用Java Spring AOP会引发“ org.springframework.beans.factory.BeanCreationException”

1 个答案: