详解在Spring中如何自动创建代理

public class User {

  public void rent(String userId) {
    System.out.println("User：租赁【充电宝】");
  }

  public void back(String userId){
    System.out.println("User：归还【充电宝】");

  }
}

public class Charger {

  public void rent(String userId) {
    System.out.println("Charger：【充电宝】被租赁");
  }
}

<?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:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd">

  <bean id="user" class="net.deniro.spring4.aop.User"/>
  <bean id="charger" class="net.deniro.spring4.aop.Charger"/>

  <!-- 前置增强-->
  <bean id="rentBeforeAdvice" class="net.deniro.spring4.aop.RentBeforeAdvice"/>

  <!-- 使用 BeanNameAutoProxyCreator-->
  <bean
      class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator"
      p:beanNames="*er"
      p:interceptorNames="rentBeforeAdvice"
      p:optimize="true"
      ></bean>
</beans>

<!-- 指定自动代理的 Bean 名称-->
<property name="beanNames" value="user,charger">
</property>

<property name="beanNames">
  <list>
    <value>user</value>
    <value>charger</value>
  </list>
</property>

User user = (User) context.getBean("user");
Charger charger = (Charger) context.getBean("charger");

String userId = "001";
user.rent(userId);
charger.rent(userId);

<bean id="user" class="net.deniro.spring4.aop.User"/>
<bean id="charger" class="net.deniro.spring4.aop.Charger"/>

<!-- 前置增强-->
<bean id="rentBeforeAdvice" class="net.deniro.spring4.aop.RentBeforeAdvice"/>

<!-- 静态正则表达式方法名匹配-->
<bean id="regexpAdvisor"
   class="org.springframework.aop.support.RegexpMethodPointcutAdvisor"
   p:advice-ref="rentBeforeAdvice">
  <!-- 匹配模式-->
  <property name="patterns">
    <list>
      <!-- 匹配字符串-->
      <value>.*rent.*</value>
    </list>
  </property>
</bean>

<!-- 使用 DefaultAdvisorAutoProxyCreator-->
<bean
    class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator"/>