版权声明:本文为博主原创文章,遵循 CC 4.0 BY-SA 版权协议,转载请附上原文出处链接和本声明。
1.带有切入点的切面
CustomerDao.java中
package com.shunnli.aop.demo4;
public class CustomerDao {
public void find(){
System.out.println("查询客户...");
}
public void save(){
System.out.println("保存客户...");
}
public void update(){
System.out.println("修改客户...");
}
public void delete(){
System.out.println("删除客户...");
}
}
MyAroundAdvice.java中增强
package com.shunnli.aop.demo4;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
/**
* @author shunli
*/
public class MyAroundAdvice implements MethodInterceptor {
public Object invoke(MethodInvocation invocation) throws Throwable {
System.out.println("环绕前增强===================");
Object obj = invocation.proceed();
System.out.println("环绕后增强===================");
return obj;
}
}
配置文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<!--配置目标类============-->
<bean id="customerDao" class="com.shunnli.aop.demo4.CustomerDao"/>
<!--配置通知============== -->
<bean id="myAroundAdvice" class="com.shunnli.aop.demo4.MyAroundAdvice"/>
<!--一般的切面是使用通知作为切面的,因为要对目标类的某个方法进行增强就需要配置一个带有切入点的切面-->
<bean id="myAdvisor" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor">
<!--pattern中配置正则表达式:.任意字符 *任意次数 -->
<!--<property name="pattern" value=".*save.*"/>-->
<property name="patterns" value=".*save.*,.*delete.*"/>
<property name="advice" ref="myAroundAdvice"/>
</bean>
<!-- 配置产生代理 -->
<bean id="customerDaoProxy" class="org.springframework.aop.framework.ProxyFactoryBean">
<property name="target" ref="customerDao"/>
<property name="proxyTargetClass" value="true"/>
<property name="interceptorNames" value="myAdvisor"/>
</bean>
</beans>
Demo中
package com.shunnli.aop.demo4;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import javax.annotation.Resource;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext2.xml")
public class SpringDemo4 {
// @Resource(name="customerDao")
@Resource(name="customerDaoProxy")
private CustomerDao customerDao;
@Test
public void demo1(){
customerDao.find();
customerDao.save();
customerDao.update();
customerDao.delete();
}
}
配置文件中对save和delete方法进行增强
<property name="patterns" value=".*save.*,.*delete.*"/>
输出:
2.基于bean名称的自动代理
修改下配置文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<!--配置目标类-->
<bean id="customerDao" class="com.shunnli.aop.demo4.CustomerDao"/>
<!-- 配置增强-->
<bean id="myAroundAdvice" class="com.shunnli.aop.demo4.MyAroundAdvice"/>
<bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
<property name="beanNames" value="*Dao"/>
<property name="interceptorNames" value="myAroundAdvice"/>
</bean>
</beans>
匹配所有 Dao结尾的目标类
<property name="beanNames" value="*Dao"/>匹配到customerDao
3.基于切面的自动代理
Customer.sava进行加强
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<!--配置目标类-->
<bean id="customerDao" class="com.shunnli.aop.demo6.CustomerDao"/>
<!-- 配置增强-->
<bean id="myAroundAdvice" class="com.shunnli.aop.demo6.MyAroundAdvice"/>
<!--配置切面-->
<bean id="myAdvisor" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor">
<property name="pattern" value="com\.shunnli\.aop\.demo6\.CustomerDao\.save"/>
<property name="advice" ref="myAroundAdvice"/>
</bean>
<bean class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator"></bean>
</beans>