1.通过@Bean(initMethod ="initPerson",destroyMethod ="destroyPerson" )
public class Person { public Person() {
System.out.println("Person 初始化............");
} public void initPerson(){
System.out.println("Person ..... init");
}
public void destroyPerson(){
System.out.println("Person ..... destroy");
}
} 2.@PostConstruct 和 @PreDestroy
public class Pig {
public Pig() {
System.out.println("Pig 被创建了.....");
} @PostConstruct
public void initPig(){
System.out.println("Pig ..... init");
} @PreDestroy
public void destroyPig(){
System.out.println("Pig ..... destroy");
} }
3.实现InitializingBean和DisposableBean 接口
public class Cat implements InitializingBean,DisposableBean{
public Cat() {
System.out.println("Cat .... 被初始化了");
} @Override
public void afterPropertiesSet() throws Exception {
System.out.println("cat ...init");
} @Override
public void destroy() throws Exception {
System.out.println("cat ...destroy");
}
} @Import({Cat.class,Pig.class})
public class Configue {
@Bean(initMethod ="initPerson",destroyMethod ="destroyPerson" )
public Person person(){
return new Person();
}
} public class App
{
public static void main( String[] args )
{
AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(Configue.class);
applicationContext.close(); }
}

理解这三种方式,对于源码学习有一定的帮助

04-26 17:23
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