<?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">
<!-- 注册目标对象 -->
<bean id="someService" class="com.gqc.aop07.SomeService"/>
<!-- 注册切面:后置通知 -->
<bean id="myAdvice" class="com.gqc.aop07.MyAfterReturningAdvice"/>
<!-- 生成代理对象 -->
<bean id="serviceProxy" class="org.springframework.aop.framework.ProxyFactoryBean">
<!-- 指定目标对象 -->
<property name="target" ref="someService"/>
<!-- <property name="targetName" value="someService"/> -->
<!-- 指定切面 -->
<property name="interceptorNames" value="myAdvice"/>
</bean>
</beans>
package com.gqc.aop07;
import java.lang.reflect.Method;
import org.springframework.aop.AfterReturningAdvice;
//后置通知可以获取到目标方法的返回结果 但无法改变目标方法的返回值
public class MyAfterReturningAdvice implements AfterReturningAdvice {
//在目标方法执行之后执行
//returnValue:目标方法的返回值
@Override
public void afterReturning(Object returnValue, Method method,
Object[] args, Object target) throws Throwable {
System.out.println("执行后置通知方法 returnValue:"+returnValue);
if(returnValue!=null){
returnValue=((String)returnValue).toUpperCase();
}
}
}
package com.gqc.aop07;
import com.gqc.utils.SystemService;
//目标类
public class SomeService {
public void doFirst() {
SystemService.doTx();
System.out.println("执行doFirst()");
SystemService.doLog();
}
public String doSecond() {
System.out.println("执行doSecond()");
return "adbc";
}
}
package com.gqc.aop07;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class MyTest {
@Test
public void test01() {
//创建容器对象 加载Spring 配置文件
String resource = "com/gqc/aop07/appliactionContext.xml";
ApplicationContext ac=new ClassPathXmlApplicationContext(resource);
SomeService service=(SomeService)ac.getBean("serviceProxy");
service.doFirst();
System.out.println("-----------------");
String result = service.doSecond();
System.out.println(result);
}
}