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

时间:2016-09-27 18:08:07   收藏:0   阅读:20350

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\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\bpmp\WEB-INF\classes\com\bkc\bpmp\xdj\zc\service\impl\AccountServiceImpl.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\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\bpmp\WEB-INF\classes\com\bkc\bpmp\xdj\zc\service\impl\AccountServiceImpl.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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