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

 1 public class OutsideInvokeLogInterceptor implements MethodInterceptor{  

 2     private static Logger log = Logger.getLogger("outsideInvoke");  

 3     

 4     @Override  

 5     public Object invoke(MethodInvocation invocation) throws Throwable {  

 6         String methodName = invocation.getMethod().toString();  

 7         Object returnValue = invocation.proceed();  

 8         if (returnValue == null) {  

 9             log.warn("调用 " + methodName + "is fail,返回的result结果为空,方法入参为:(" + parseArguments(invocation.getArguments()) + ")");  

10             return ResultDTO.getFailureResult(BSErrorCode.INTERNAL_ERROR, BaseKeyMsgCode.RETURN_RESULTDTO_IS_NULL);  

11         }else{  

12             if(returnValue instanceof ResultDTO){  

13                 ResultDTO<Object> resultDTO = (ResultDTO<Object>)returnValue;  

14                 if(!resultDTO.isSuccess()){  

15                     log.warn("调用 " + methodName + " is fail ,方法入参为:(" + parseArguments(invocation.getArguments()) + ")"  

16                          + "返回值：" +resultDTO.getCode() + "," + resultDTO.getKey());  

17                 } else{  

18                     log.info("调用 " + methodName + " is success ,方法入参为:(" + parseArguments(invocation.getArguments()) + ")");  

19                 }  

20             }  

21         }  

22         return returnValue;  

23   

24     }  

25 }  

View Code

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

View Code

配置切点:

1 <bean id="methodPointcut" class="org.springframework.aop.support.NameMatchMethodPointcut">  

2         <property name="mappedNames">  

3             <list>  

4                 <value>add*</value>  

5             </list>  

6         </property>  

7     </bean>  

View Code

配置自动代理：

 1 <bean id="outsideInvokeLogInterceptor" class="org.springframework.aop.support.DefaultPointcutAdvisor">  

 2     <property name="pointcut" ref="methodPointcut"/>  

 3     <property name="advice" ref="outsideInvokeLogAdvice"/>  

 4 </bean>  

 5 <bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">  

 6     <property name="beanNames">  

 7         <list><value>activityService</value></list>  

 8     </property>  

 9     <property name="interceptorNames">  

10         <list>  

11             <value>outsideInvokeLogInterceptor</value>  

12         </list>  

13     </property>  

14 </bean>  

View Code