AOP:java.lang.IllegalArgumentException::: 0处的错误找不到引用的切入点

Question

我是AOP的新手.我有这样的问题.

package org.suman.Aspect;

import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;

@Aspect
public class LoginAspect {
    //@Before("execution(public String getName())")
    //@Before("execution(public String org.suman.Model.Triangle.getName())")
    //@Before("execution(* get*())")
    //@Before("execution(* get*(..))")
    //@Before("execution(* org.suman.Model.*.get*())")

    //@Before("execution(* get*())&& within(org.suman.Model.Circle)")
    @Before("execution(* get*())&& allCircle()")
    //@Before("allGetters() && allCircle()")
    public void LoginAdvice()
    {
        System.out.println("Advice run.. getMethod is called");
    }

    @Before("execution(* get*())")
    //@Before("allGetters()")
    public void SecondAdvice()
    {
        System.out.println("this is a second Advice");
    }
    @Pointcut("execution(* get*())")
    public void allGetters(){}

    //@Pointcut("execution (* * org.suman.Model.Circle.*(..))")
    @Pointcut("within(org.suman.Model.Circle)")
    public void allCircle(){}

} 

当使用切入点时,方法allGetters()为LoginAdvice方法,如果我使用@Before("execution(*get*())"然后没有错误但是如果我使用@Before("allGetters()")则会给出错误" java.lang.IllegalArgumentException::: 0处的错误找不到引用的切入点allGetters

如果我使用@Before("execution(*get*())&&(org.suman.Model.Circle)")而不是方法名称,它可以工作.

我的xml是这样的:

<?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"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd">
    <!-- <context:annotation-config /> -->
    <aop:aspectj-autoproxy />

    <bean name="triangle" class="org.suman.Model.Triangle">
        <property name="name" value="Triangle Name"></property>
    </bean>
    <bean name="circle" class="org.suman.Model.Circle">
        <property name="name" value="Circle name"></property>
    </bean>
    <bean name="shapeService" class="org.suman.Services.ShapeService"
        autowire="byName"></bean>
    <bean name="loginAspect" class="org.suman.Aspect.LoginAspect"></bean>

</beans>

请通过切入点解决问题的方法

Answer 1

我有这个问题 - 在'占位符'方法上使用@Pointcut给了我"找不到引用的切入点"错误.

简单地通过使用maven依赖项更新AspectJ库来解决:

    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjrt</artifactId>
        <version>1.5.4</version>
    </dependency>
    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjweaver</artifactId>
        <version>1.5.4</version>
    </dependency>

对此

    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjrt</artifactId>
        <version>1.7.0</version>
    </dependency>
    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjweaver</artifactId>
        <version>1.7.0</version>
    </dependency>

Answer 2

我相信您需要在前面放置另一个通配符：

@Pointcut("execution(* get*())")

将其更改为：

@Pointcut("execution(* *get*())")