我是 AOP 的新手。我遇到了这样的问题。
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(){}
}
使用切入点时,方法allGetters()
到LoginAdvice
方法,如果我使用 @Before("execution(* get*())")
则没有错误,但如果我使用@Before("allGetters()")
则给出错误
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*())&& within(org.suman.Model.Circle)")
而不是方法名称,它会起作用。
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>
请用切入点解决问题