I have the following class which doesn't implement any interface :
public class HelloWorld {
...
}
the following is my xml configuration :
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:task="http://www.springframework.org/schema/task"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task.xsd">
<context:annotation-config/>
<aop:aspectj-autoproxy />
<bean id="helloBean" name="helloBean" class="com.mkyong.core.HelloWorld" autowire="byName">
<property name="name" value="Mkyong"/>
</bean>
<bean id="log" class="com.mkyong.core.Log" />
<bean id="cachedService" class="org.springframework.aop.framework.ProxyFactoryBean">
<property name="target" ref="helloBean"/>
<property name="proxyTargetClass" value="true"/>
</bean>
The following is working and use CGLIB proxy :
HelloWorld obj = (HelloWorld) context.getBean("cachedService");
when I add the following configuration in XML it doesn't work :
<aop:config >
<aop:aspect id = "log" ref = "log">
<aop:pointcut id = "selectAll"
expression = "execution(* com.*.*.*.*(..))"/>
<aop:before pointcut-ref = "selectAll" method = "beforeAdvice"/>
<aop:after pointcut-ref = "selectAll" method = "afterAdvice"/>
</aop:aspect>
</aop:config>
the exception is the following it tries to use JDK proxy : java.lang.ClassCastException: com.sun.proxy.$Proxy9 cannot be cast to com.mkyong.core.HelloWorld
I'm confused as the following work and use CGLIB proxy :
HelloWorld obj2 = (HelloWorld) context.getBean("helloBean");
the default to use CGLIB proxy if no interface so why it's not working ?
helloBean working, cachedService not working
Update:
This fix the issue :
<aop:aspectj-autoproxy proxy-target-class="true"/>
proxy-target-class="true" is needed on aop even the class doesn't implement interface which should use CGLIB proxy ,
but why it's needed ?
