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 }  

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

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>  

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>