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  • 引入AOP 报错 error at ::0 formal unbound in pointcut

    使用了AOP 后启动报错

    九月 27, 2016 2:29:46 下午 org.springframework.context.support.AbstractApplicationContext refresh
    警告: Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'acAction': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'accountService' defined in file [D:workspace_eclipse_mars.metadata.pluginsorg.eclipse.wst.server.core	mp0wtpwebappspmpWEB-INFclassescomkcpmpxdjzcserviceimplAccountServiceImpl.class]: Initialization of bean failed; nested exception is java.lang.IllegalArgumentException: error at ::0 formal unbound in pointcut 
    九月 27, 2016 2:29:46 下午 org.springframework.web.servlet.FrameworkServlet initServletBean
    严重: Context initialization failed
    org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'acAction': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'accountService' defined in file [D:workspace_eclipse_mars.metadata.pluginsorg.eclipse.wst.server.core	mp0wtpwebappspmpWEB-INFclassescomkcpmpxdjzcserviceimplAccountServiceImpl.class]: Initialization of bean failed; nested exception is java.lang.IllegalArgumentException: error at ::0 formal unbound in pointcut 
    	at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:308)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1208)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
    	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
    	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
    

      

     

    在使用声明方式的AOP编程中,遇到以下问题,解决方法如下:

    (1)error at ::0 formal unbound in pointcut

    解决方法:去掉函数通知函数中的参数,比如:将

    @Before("execution(public void com.bjsxt.dao.impl.UserDAOImpl.*(..))")

        public void beforeMethod(Method method){

           System.out.println("method before");

        }

    改为

    @Before("execution(public void com.bjsxt.dao.impl.UserDAOImpl.*(..))")

        public void beforeMethod(){

           System.out.println("method before");

        }

    情况二:

    原写法:

    @Before("@annotation(org.haha.web.annotation.BrowAuth)
    public void beforeExec(HttpServletRequest request) {

        ......

    }

    会报以下错误:

    0 formal unbound in pointcut

    原因是应该用args指明参数,改成以下就可以了:

    @Before("@annotation(org.haha.web.annotation.BrowAuth) && (args(request,..) || args(..,request))")
    public void beforeExec(HttpServletRequest request) {

        ......

    }

    方法中未带参数,本bug 非此原因

     

    (2)可能原因(我的猜测,未确认)

      使用了AOP 之后(spring),实现注解是采用代理的方式,而代理有两种jdk自带代理和 cglib,而在springmvc 中直接使用自动注解的时候,没有使用这一层代理。接口、接口的实现类,其注解的命名方式不一致,造成了自动注入的时候,代理不知道该选择哪一个类……

      可解决方法:一、使用AOP注解,将原有的业务上的接口、接口实现类的命名改统一。假设接口为 IUserDao,实现类为 UserDaoImpl ,自动注入的时候写成  IUserDao userDaoImpl  (原因:不清楚)

        方法二、不要使用AOP注解,在xml 中配置需要的AOP 方式,如下:自定义LoggingInterceptor 中有个around 方法

        

    <bean id="loggingInterceptor" class="com.bkc.core.aspectj.LoggingInterceptor" />	
      <aop:config> <aop:aspect id="loggingAspect" ref="loggingInterceptor"> <aop:pointcut id="loggingIn" expression="execution(* com.bkc.oa.controller..*.*(..))" /> <!-- <aop:before method="before" pointcut-ref="loggingIn"/> <aop:after method="after" pointcut-ref="loggingIn"/> --> <aop:around method="around" pointcut-ref="loggingIn"/> </aop:aspect> </aop:config>

      

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  • 原文地址:https://www.cnblogs.com/panie2015/p/5913575.html
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