这里说的自动代理说的是自动代理bean对象，就是说在xml中不用再配置代理工厂，就可以自动代理
下面来说第一种
第一种自动代理：默认自动代理生成器（DefaultAdvisorAutoProxyCreator）
第一步：定义接口，在接口中声明几个方法
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：编写实现类，重写接口中的方法
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：写一个前置增强
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.目标对象--> <bean id="service" class="demo17.SomeServiceImpl"></bean> <!--通知--> <bean id="beforeAdvice" class="demo17.BeforeAdvice"></bean> <!--顾问--> <bean id="advisor" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor"> <property name="advice" ref="beforeAdvice"></property> <property name="patterns" value=".*e.*"></property> </bean> <!--默认自动代理--> <bean class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator"></bean> </beans>
最后一步：编写测试方法，进行单测
//默认自动代理 @Test public void t1() { ApplicationContext context = new ClassPathXmlApplicationContext("applicationContextauto01.xml"); ISomeService service =(ISomeService) context.getBean("service"); service.select(); }
运行结果如下：
第二种：名称自动代理生成器（BeanNameAutoProxyCreator）
步骤和上述的一样，在这里我就直接用上一种的接口和实现类了，xml中的配置有所不同
这里我有创建了一个接口和实现类，如果要配置多个对象，应该怎么配？
新创建的接口和实体类
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.目标对象--> <bean id="service" class="demo17.SomeServiceImpl"></bean> <bean id="bookService" class="demo17.BookServiceImpl"></bean> <!--通知--> <bean id="beforeAdvice" class="demo17.BeforeAdvice"></bean> <!--顾问--> <bean id="advisor" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor"> <property name="advice" ref="beforeAdvice"></property> <property name="patterns" value=".*e.*"></property> </bean> <!--名称自动代理--> <bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator"> <property name="beanNames" value="service,bookService"></property> <property name="interceptorNames" value="advisor"></property> </bean> </beans>
编写测试类
//名称自动代理 @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(); }
运行结果
