這裏說的自動代理說的是自動代理bean對象，就是說在xml中不用再配置代理工廠，就可以自動代理

下面來說第一種

第一種自動代理：默認自動代理生成器（DefaultAdvisorAutoProxyCreator）

第一步：定義接口，在接口中聲明幾個方法

package demo17;

/**
 * Created by mycom on 2018/3/8.
 */
public interface ISomeService {
    public void select();
    public void insert();
    public void delete();
    public
 
 void update();
}

第二步：編寫實現類，重寫接口中的方法

package demo17;


/**
 * Created by mycom on 2018/3/8.
 */
public class SomeServiceImpl implements ISomeService {

    public void select() {
        System.out.println("select  ok!");
    }

    public void insert() {

    }

    public void delete() {

    }

    
 
public void update() {

    }
}

第三步：寫一個前置增強

package demo17;

import org.springframework.aop.MethodBeforeAdvice;

import java.lang.reflect.Method;

/**
 * Created by mycom on 2018/3/12.
 */
public class BeforeAdvice implements MethodBeforeAdvice {
    public void before(Method method, Object[] args, Object target) throws Throwable {
        System.
 
out.println("before=======");
    }
}

第四步：配置xml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"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
         http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
">
    <!--1.目標對象-->
    <bean id="service" class="demo17.SomeServiceImpl"></bean>
    <!--通知-->
    <bean id="beforeAdvice" class="demo17.BeforeAdvice"></bean>
    <!--顧問-->
    <bean id="advisor" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor">
        <property name="advice" ref="beforeAdvice"></property>
        <property name="patterns" value=".*e.*"></property>
    </bean>
    <!--默認自動代理-->
    <bean class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator"></bean>

</beans>

最後一步：編寫測試方法，進行單測

//默認自動代理
    @Test
    public void t1() {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContextauto01.xml");
        ISomeService service =(ISomeService) context.getBean("service");
        service.select();
    }

運行結果如下：

第二種：名稱自動代理生成器（BeanNameAutoProxyCreator）

步驟和上述的一樣，在這裏我就直接用上一種的接口和實現類了，xml中的配置有所不同

這裏我有創建了一個接口和實現類，如果要配置多個對象，應該怎麽配？

新創建的接口和實體類

package demo17;

/**
 * Created by mycom on 2018/3/12.
 */
public interface IBookService {
    public void select();
}

package demo17;

/**
 * Created by mycom on 2018/3/12.
 */
public class BookServiceImpl implements IBookService {
    public void select() {
        System.out.println("Book select");
    }
}

配置文件中

<?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:aop="http://www.springframework.org/schema/aop"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
         http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
">
    <!--1.目標對象-->
    <bean id="service" class="demo17.SomeServiceImpl"></bean>
    <bean id="bookService" class="demo17.BookServiceImpl"></bean>
    <!--通知-->
    <bean id="beforeAdvice" class="demo17.BeforeAdvice"></bean>
    <!--顧問-->
    <bean id="advisor" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor">
        <property name="advice" ref="beforeAdvice"></property>
        <property name="patterns" value=".*e.*"></property>
    </bean>
    <!--名稱自動代理-->
    <bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
        <property name="beanNames" value="service,bookService"></property>
        <property name="interceptorNames" value="advisor"></property>
    </bean>

</beans>

編寫測試類

//名稱自動代理
    @Test
    public void t2() {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContextauto02.xml");
        ISomeService service =(ISomeService) context.getBean("service");
        service.select();
        IBookService bookService =(IBookService) context.getBean("bookService");
        bookService.select();
    }

運行結果

Spring（九）Spring中的兩種自動代理