Spring报nested exception is java.lang.IllegalArgumentException: error at ::0 formal unbound in point

蔚落 2023-07-25 12:35 46阅读 0赞

> 在我们使用spring注解方式写通知时，例如

@AfterReturning(value = "pointcut()")
        public void after(JoinPoint jp,Object returningValue){ 
            System.out.println("注解方式实现【后置通知】"+
                    jp.getSignature().getName()+"目标对象："+
                    jp.getTarget()+"，"+"参数的返回值："+returningValue);
        }

Object returningValue是后置通知直接 得到返回值，这个使用时是特别的方便，但是用这样的方式做业务会报：

> org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘studentDaoImpl’ defined in class path resource \[applicationContext.xml\]: Initialization of bean failed; nested exception is java.lang.IllegalArgumentException: error at ::0 formal unbound in pointcut  
> at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)  
> at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)  
> at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)  
> at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)  
> at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)  
> at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)  
> at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772)  
> at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839)  
> at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538)  
> at org.springframework.context.support.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:139)  
> at org.springframework.context.support.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:83)

我们的解决方式为：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjg5MzA4NQ_size_16_color_FFFFFF_t_70]  
在方法中声明一下就可以了：  
![在这里插入图片描述][20200414222947303.png]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mjg5MzA4NQ_size_16_color_FFFFFF_t_70]: /images/20230528/a9a06ecf558f48df87309727a925613a.png
[20200414222947303.png]: /images/20230528/7bd38a2980a444ed8465b67be328afb1.png