使用spring annotation完成初始化 bean 和销毁前所做的操作

最新推荐文章于 2021-11-03 21:46:47 发布

原创最新推荐文章于 2021-11-03 21:46:47 发布 · 153 阅读

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本文介绍了一个使用JSR-330注解的Java Spring应用示例，包括@PostConstruct和@PreDestroy注解的使用，以及Spring XML配置文件的设置。

package com.myapp.core.annotation.init;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;

@Service
public class PersonService {
  
	private String  message;

	public String getMessage() {
		return message;
	}

	public void setMessage(String message) {
		this.message = message;
	}
	
	@PostConstruct
	public void  init(){
		System.out.println("I'm  init  method  using  @PostConstrut...."+message);
	}
	
	@PreDestroy
	public void  dostory(){
		System.out.println("I'm  destory method  using  @PreDestroy....."+message);
	}
	
}

spring xml 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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd">

<!-- <context:component-scan  base-package="com.myapp.core.jsr330"/> -->

<context:annotation-config />

</beans>

测试类：

package com.myapp.core.annotation.init;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MainTest {
	
	public static void main(String[] args) {
		
		ApplicationContext  context = new ClassPathXmlApplicationContext("resource/annotation.xml");
		
		PersonService   personService  =  (PersonService)context.getBean("personService");
		
		personService.dostory();
	}

}