Spring_aop_xml

1) 项目清单



2) 源码

  ① 接口

package com.spt.interfaces;

public interface DAO {

boolean save(Object entity);
boolean delete(Object id);
boolean update(Object entity);

}

  ② 切面类

package com.LogInter;

import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.stereotype.Component;

public class LogInterceptor {
public void before(){
System.out.println("method start");
}

public void after(){
System.out.println("method stop");
}
}

  ③ 测试类

package com.jdbctemplate.test;

import java.math.BigDecimal;
import java.util.List;

import org.aspectj.lang.annotation.Aspect;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.stereotype.Component;

public class Test2 {

public static void main(String[] args) {
ApplicationContext app = new ClassPathXmlApplicationContext("aa.xml");

/*
*Anncation注解方式,如果被代理target(Test2)需要继承接口le ,那么接口就是代理类,
* Test t = (Test) app.getBean("test"); 这里生成的必须是接口类型,而spring支持无接口模式代理,
* 代理类与被代理类都必须通过spring管理,@Aspect声明这是代理类,@Component("posxy"),spring初始化,
*
*/
Test2 t = (Test2) app.getBean("test");
/*
* t可以正常代理,而tt不行,必须通过spring产生对象;
*/
Test2 tt=new Test2();
t.getAll();
}
public void getAll() {
System.out.println("started");
}
}

  ④ 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"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd"> <context:annotation-config />
<context:component-scan base-package="com"/>

<bean id="test" class="com.jdbctemplate.test.Test2"></bean>
<bean id="LogInterceptor" class="com.LogInter.LogInterceptor"></bean>

<aop:config>
<aop:pointcut expression="execution(public * com..*.*(..))" id="pointcut"/>
<aop:aspect id="aspect" ref="LogInterceptor">
<aop:before method="before" pointcut-ref="pointcut" />
<aop:after method="after" pointcut-ref="pointcut"/>
</aop:aspect>
</aop:config>

</beans>