小魚的空氣

HelloReplacer.java

package javamxj . spring . basic . MethodReplacer ;

import java . lang . reflect . Method ;

import org . springframework . beans . factory . support . MethodReplacer ;

public class HelloReplacer implements MethodReplacer {
??? publicObject reimplement(Object o, Method m, Object[] args) throwsThrowable {

??????? System.out.println("你好: " + args[0]);
??????? returnnull;
??? }
}

beans.xml

<? xml version = " 1.0 " encoding = " GBK " ?>
<! DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd" >

< beans >
??? <bean id="helloReplacer" class="javamxj.spring.basic.MethodReplacer.HelloReplacer"/>
???
??? <bean id="helloA" class="javamxj.spring.basic.MethodReplacer.HelloImpl"/>
???
??? <bean id="helloB" class="javamxj.spring.basic.MethodReplacer.HelloImpl">
??????? <replaced-method name="sayHello" replacer="helloReplacer"/>
??? </bean>
???
</beans>

Main.java

package javamxj . spring . basic . MethodReplacer ;

import org . springframework . beans . factory . BeanFactory ;
import org . springframework . beans . factory . xml . XmlBeanFactory ;
import org . springframework . core . io . ClassPathResource ;
import org . springframework . core . io . Resource ;

public class Main {
??? publicstaticvoid main(String[] args) {
??????? Resource res = new ClassPathResource(
??????????????? "javamxj/spring/basic/MethodReplacer/beans.xml");
??????? BeanFactory ft = new XmlBeanFactory(res);

??????? // 沒有使用replaced-method
??????? Hello h = (Hello) ft.getBean("helloA");
??????? h.sayHello("分享Java快樂");
???????
??????? // 使用replaced-method
??????? h=(Hello) ft.getBean("helloB");
??????? h.sayHello("分享Java快樂");

??? }
}