ProxyFactoryBean实现AOP

我会带着你远行 2023-06-08 05:59 14阅读 0赞

实体类：

package com.student.jdk;
    //作为实体类
    public class UserDaoImpl implements UserDao {
    
    	@Override
    	public void addUser() {
    		System.out.println("添加用户！！");
    	}
    
    	@Override
    	public void deleteUser() {
    		System.out.println("删除用户！！");
    
    	}
    
    }

切面类：

package com.student.factorybean;
    
    import org.aopalliance.intercept.MethodInterceptor;
    import org.aopalliance.intercept.MethodInvocation;
    
    public class MyAspect implements MethodInterceptor {
    
    	@Override
    	public Object invoke(MethodInvocation arg0) throws Throwable {
    		check_Permissions();//调用自己的模拟检查权限方法。
    		Object obj = arg0.proceed();//执行目标方法。
    		log();//调用自己的模拟记录日志方法。
    		
    		return null;
    	}
    
    	private void log() {
    	System.out.println("模拟检查记录日志！！！！");
    		
    	}
    
    	private void check_Permissions() {
    		System.out.println("模拟检查权限！！！");
    		
    	}
    
    }

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">
    
    	
    
    	<bean id="userDao" class="com.student.jdk.UserDaoImpl"></bean>
    	<bean id="myAspect" class="com.student.factorybean.MyAspect"></bean>
    	<bean id="userDaoProxy"
    		class="org.springframework.aop.framework.ProxyFactoryBean">
    		<property name="proxyInterfaces"
    			value="com.student.jdk.UserDao"></property>
    	    <property name="target" ref="userDao"></property>
    		<property name="interceptorNames" value="myAspect"></property>
    		<property name="proxyTargetClass" value="true"></property>
    	</bean>
    
    </beans>

测试类：

package com.student.factorybean;
    
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    import com.student.jdk.UserDao;
    
    public class ProxyFactorBeanTest {
    
    	public static void main(String[] args) {
    		String xmlPath = "com/student/factorybean/applicationContext.xml";
    		ApplicationContext applicationContext =new ClassPathXmlApplicationContext(xmlPath);
    		UserDao userDao =(UserDao)applicationContext.getBean("userDaoProxy");
    		userDao.addUser();
    		userDao.deleteUser();
    	}
    
    }

运行结果：

十月 16, 2019 5:23:13 下午 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh
    信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@25f38edc: startup date [Wed Oct 16 17:23:13 CST 2019]; root of context hierarchy
    十月 16, 2019 5:23:13 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
    信息: Loading XML bean definitions from class path resource [com/student/factorybean/applicationContext.xml]
    模拟检查权限！！！
    添加用户！！
    模拟检查记录日志！！！！
    模拟检查权限！！！
    删除用户！！
    模拟检查记录日志！！！！