AOP编程实例：拦截器拦截拦截某个实现类的方法

第一步：配置实现MethodInterceptor的切面

java代码

public class OutsideInvokeLogInterceptor implements MethodInterceptor{  
    private static Logger log = Logger.getLogger("outsideInvoke");  
    
    @Override  
    public Object invoke(MethodInvocation invocation) throws Throwable {  
        String methodName = invocation.getMethod().toString();  
        Object returnValue = invocation.proceed();  
        if (returnValue == null) {  
            log.warn("调用 " + methodName + "is fail,返回的result结果为空,方法入参为:(" + parseArguments(invocation.getArguments()) + ")");  
            return ResultDTO.getFailureResult(BSErrorCode.INTERNAL_ERROR, BaseKeyMsgCode.RETURN_RESULTDTO_IS_NULL);  
        }else{  
            if(returnValue instanceof ResultDTO){  
                ResultDTO<Object> resultDTO = (ResultDTO<Object>)returnValue;  
                if(!resultDTO.isSuccess()){  
                    log.warn("调用 " + methodName + " is fail ,方法入参为:(" + parseArguments(invocation.getArguments()) + ")"  
                         + "返回值：" +resultDTO.getCode() + "," + resultDTO.getKey());  
                } else{  
                    log.info("调用 " + methodName + " is success ,方法入参为:(" + parseArguments(invocation.getArguments()) + ")");  
                }  
            }  
        }  
        return returnValue;  
  
    }  
}  

<bean id="outsideInvokeLogAdvice" class="com.ali.luna.commons.service.interceptor.OutsideInvokeLogInterceptor" /> 

配置切点:

<bean id="methodPointcut" class="org.springframework.aop.support.NameMatchMethodPointcut">  
        <property name="mappedNames">  
            <list>  
                <value>add*</value>  
            </list>  
        </property>  
    </bean>  

配置自动代理：

<bean id="outsideInvokeLogInterceptor" class="org.springframework.aop.support.DefaultPointcutAdvisor">  
    <property name="pointcut" ref="methodPointcut"/>  
    <property name="advice" ref="outsideInvokeLogAdvice"/>  
</bean>  
<bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">  
    <property name="beanNames">  
        <list><value>activityService</value></list>  
    </property>  
    <property name="interceptorNames">  
        <list>  
            <value>outsideInvokeLogInterceptor</value>  
        </list>  
    </property>  
</bean>