spring AOP実現――annotation方法
springのAOPは導入する特殊パッケージが必要です.(もちろん他のspringのベースパックは必須です.)
aopalliance.jar
aspect jrt.jar
aspectjweaver.jar
1.ハロー.javaインターフェース
2.ハローImpl.java
aopalliance.jar
aspect jrt.jar
aspectjweaver.jar
1.ハロー.javaインターフェース
package com.xj.bean.aop;
public interface Hello {
public void addHello(); //
public void deleteHello(); //
public void findHello();
}
2.ハローImpl.java
package com.xj.bean.aop;
public class HelloImpl implements Hello{
@Override
public void addHello() {
System.out.println("add");
}
@Override
public void deleteHello() {
System.out.println("delete");
}
@Override
public void findHello() {
System.out.println("find");
}
}
3.ハローProxy.java(いわゆるAsppect類)import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
@Aspect
public class HelloProxy {
// (@Before) ( Advice )
//execution
@Before("execution( * com.xj.bean.aop.*.add*(..))")
private void beforeLog(){
System.out.println("before check add");
}
// (@After) ( Advice )
@After("execution(* com.xj.bean.aop.*.delete*(..))")
private void afterLog(){
System.out.println("after check delete");
}
}
4.Application Contect.xml<?xml version="1.0" encoding="UTF-8" ?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://www.springframework.org/schema/beans"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
">
<aop:aspectj-autoproxy/> <!-- -->
<bean id="hello" class="com.xj.bean.aop.HelloImpl"/> <!-- bean-->
<bean id="helloProxy" class="com.xj.bean.aop.HelloProxy"/> <!-- Aspect -->
5.テストApplicationContext context =new ClassPathXmlApplicationContext("applicationContext.xml");
Hello hello = (Hello)context.getBean("hello");
hello.addHello();
hello.deleteHello();
6.結果before check add //add
add
delete
after check delete //delete