執行後報了一大堆錯誤，挺嚇人的，不要怕，這寫錯誤可能是同一原因在不同地方重複出現；

錯誤太長，貼上幾段，分析一下

Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error

creating bean with name 'loginLogDao' defined in file [D:\actionSpring\chapter\chapter1\target\classes\com\smart\dao\LoginLogDao.class]: BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException:

Error creating bean with name 'org.springframework.aop.support.DefaultBeanFactoryPointcutAdvisor#0': Cannot resolve reference to bean 'serviceMethod' while setting bean property 'pointcut'; nested exception is org.springframework.beans.factory.BeanCreationException:

Error creating bean with name 'serviceMethod': Failed to introspect bean class [org.springframework.aop.aspectj.AspectJExpressionPointcut

] for lookup method metadata: could not find class that it depends on; nested exception is java.lang.NoClassDefFoundError: org/aspectj/weaver/reflect/ReflectionWorld$ReflectionWorldException 九月 19, 2018 11:43:19 上午 org.springframework.test.context.TestContextManager prepareTestInstance 嚴重:

Caught exception while allowing TestExecutionListener [org.springframewor

[email protected]bc05a6] to prepare test instance [[email protected]] java.lang.IllegalStateException: Failed to load ApplicationContext

Caused by: java.lang.NoClassDefFoundError: org/aspectj/weaver/reflect/ReflectionWorld$ReflectionWorldException

Caused by: java.lang.ClassNotFoundException: org.aspectj.weaver.reflect.ReflectionWorld$ReflectionWorldException

java.lang.IllegalStateException: Failed to load ApplicationContext

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.support.DefaultBeanFactoryPointcutAdvisor#0':

Caused by: java.lang.ClassNotFoundException: org.aspectj.weaver.reflect.ReflectionWorld$ReflectionWorldException

剛開始可能雲裡霧裡的，從上到下，分析一下黑體部分，發現了關鍵問題：j

springframework.aop.aspectj.AspectJExpression Pointcut for lookup method metadata: could not find class that it depends on

Pointcut 使用時，尋找方法時找不到依賴的類

java.lang.IllegalStateException: Failed to load ApplicationContext

發現問題出在配置檔案上，查一下applicationContect.xml且和aop：pointcut有關，發現：

<!-- 通過AOP配置提供事務增強，讓service包下所有Bean的所有方法擁有事務 -->
<aop:config proxy-target-class="true">
    <aop:pointcut id="serviceMethod"
                  expression=" execution(* com.smart.service..*(..))" />
    <aop:advisor pointcut-ref="serviceMethod" advice-ref="txAdvice" />
</aop:config>

spring AOP是用aspectj來實現的，是依賴關係！
AspectJ是動態代理的一種實現！而spring預設使用的就是AspectJ來實現的動態代理

使用時需要依賴於一些第三方庫

java.lang.ClassNotFoundException: org.aspectj.weaver.reflect.ReflectionWorld$ReflectionWorldException

找到缺少的類包weaver

下載aspectjweaver.jar ，網上很多資源，附一個下載連結：

匯入該依賴包

有些人可能還缺少spring-aop.jar，這個一般使用IDE匯入spring框架會有。