配置AOP:pointcut时出现了异常，本人是，请大家多指点

<aop:aspectj-autoproxy proxy-target-class="true"/>
 <aop:config>
     <aop:aspect id="TestAspect" ref="aspectTest">
         <aop:pointcut expression="excution(* com.service.*.*(..))" id="at"/>
         <aop:around method="aspect" pointcut-ref="at"/>
     </aop:aspect>     
 </aop:config>
        <bean id="test" class="com.service.impl.TestServiceImpl"></bean>
 
       <bean id="aspectTest" class="com.aspect.AspectTest"></bean>
 
    </beans>

异常信息： Pointcut is not well-formed: expecting “)” at character position 11
excution(* com.service.*.*(..))