一、
- 引入cglib.jar包
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>3.2.8</version>
</dependency>
2、 dispatcherServlet-servlet.xml添加配置
<!-- 通知spring使用cglib而不是jdk的来生成代理方法 AOP可以拦截到Controller -->
<aop:aspectj-autoproxy proxy-target-class="true" />
<context:component-scan base-package="com.qding">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service"/>
</context:component-scan>
3、applicationContext.xml
<context:component-scan base-package="com.qding">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
二、问题描述
1、当使用Spring AOP对Controller层的Controller类的方法进行切面拦截，不起作用。AOP配置没有任何问题。
AOP之所以有的人说拦截不到Controller,原因是该注解的Controller已被spring容器内部代理了。我们只要把它交给cglib代理就可以了。Spring MVC的配置文件dispatcherServlet-servlet.xml：
dispatcherServlet-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
<!-- 登录拦截器
<mvc:interceptors>
<bean >
</bean>
</mvc:interceptors>-->
<context:annotation-config />
<context:component-scan base-package="com.yc">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service"/>
</context:component-scan>
<aop:aspectj-autoproxy proxy-target-class="true"/>
<bean class="com.yc.controller.aop.LogAspect" />
<!--SpringMVC的配置文件，包含网站跳转逻辑的控制，配置 -->
<context:component-scan base-package="com.yc.controller" use-default-filters="false">
<!--只扫描控制器。 -->
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!-- Spring的配置文件，这里主要配置和业务逻辑有关的 -->
<!--=================== 数据源，事务控制，xxx ================ -->
<context:property-placeholder location="classpath:properties/*.properties" />
<!-- 静态资源解析 -->
<mvc:resources location="/webframes/" mapping="/webframes/**"/>
<!--配置视图解析器，方便页面返回 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<!--两个标准配置 -->
<!-- 将springmvc不能处理的请求交给tomcat -->
<mvc:default-servlet-handler/>
<!-- 能支持springmvc更高级的一些功能，JSR303校验，快捷的ajax...映射动态请求 -->
<mvc:annotation-driven/>
</beans>
applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
<context:component-scan base-package="com.yc">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<!-- Spring的配置文件，这里主要配置和业务逻辑有关的 -->
<context:property-placeholder location="classpath:properties/*.properties" />
<!--sql server 数据源配置 -->
<!-- org.springframework.jdbc.datasource.DriverManagerDataSource -->
<bean id="pooledDataSource" class="com.alibaba.druid.pool.DruidDataSource"
destroy-method="close">
<property name="driverClassName" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="filters" value="${filters}" />
<property name="maxActive" value="${maxActive}" />
<property name="initialSize" value="${initialSize}" />
<property name="maxWait" value="${maxWait}" />
<property name="minIdle" value="${minIdle}" />
<property name="timeBetweenEvictionRunsMillis" value="${timeBetweenEvictionRunsMillis}" />
<property name="minEvictableIdleTimeMillis" value="${minEvictableIdleTimeMillis}" />
<property name="validationQuery" value="${validationQuery}" />
<property name="testWhileIdle" value="${testWhileIdle}" />
<property name="testOnBorrow" value="${testOnBorrow}" />
<property name="testOnReturn" value="${testOnReturn}" />
<property name="poolPreparedStatements" value="${poolPreparedStatements}" />
<property name="maxOpenPreparedStatements" value="${maxOpenPreparedStatements}" />
</bean>
<!--================== 配置和MyBatis的整合=============== -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 指定mybatis全局配置文件的位置 -->
<property name="configLocation" value="classpath:spring/mybatis-config.xml"></property>
<property name="dataSource" ref="pooledDataSource"></property>
<!-- 指定mybatis，mapper文件的位置 -->
<!-- <property name="mapperLocations" value="classpath:mapper/*.xml"></property> -->
</bean>
<!-- 配置扫描器，将mybatis接口的实现加入到ioc容器中 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--扫描所有dao接口的实现，加入到ioc容器中 -->
<property name="basePackage" value="com.yc.mapper"></property>
</bean>
<!-- 配置一个可以执行批量的sqlSession -->
<bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"></constructor-arg>
<constructor-arg name="executorType" value="SIMPLE"></constructor-arg>
</bean>
<!--============================================= -->
<!-- ===============事务控制的配置 ================ -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--控制住数据源 -->
<property name="dataSource" ref="pooledDataSource"></property>
</bean>
<!--开启基于注解的事务，使用xml配置形式的事务（必要主要的都是使用配置式） -->
<aop:config>
<!-- 切入点表达式 -->
<aop:pointcut expression="execution(* com.yc.service..*(..))"
id="txPoint" />
<!-- 配置事务增强 -->
<aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint" />
</aop:config>
<!--配置事务增强，事务如何切入 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="edit*" propagation="REQUIRED" />
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="new*" propagation="REQUIRED" />
<tx:method name="set*" propagation="REQUIRED" />
<tx:method name="remove*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="change*" propagation="REQUIRED" />
<tx:method name="check*" propagation="REQUIRED" />
<tx:method name="get*" propagation="REQUIRED" read-only="true" />
<tx:method name="find*" propagation="REQUIRED" read-only="true" />
<tx:method name="load*" propagation="REQUIRED" read-only="true" />
<tx:method name="*" propagation="REQUIRED" read-only="true" />
</tx:attributes>
</tx:advice>
<!-- Spring配置文件的核心点（数据源、与mybatis的整合，事务控制） -->
<!-- 国际化配置 -->
<bean id="messageSource"
class="org.springframework.context.support.ResourceBundleMessageSource">
<property name="basenames">
<list>
<value>properties/messages</value>
</list>
</property>
<property name="defaultEncoding" value="utf-8" />
</bean>
</beans>
3/Spring Aop 执行两次原因（1）
切面bean重复定义
类中使用了@Component的同时又在springmvc.xml中配置了<bean id="log**" class="com.demo.log.**Aspect"></bean>
方法： 删除两个定义之一