【Spring源码解析】生命周期-InitializingBean和DisposableBean

实现

1. 定义bean

@Component
public class Cat implements InitializingBean, DisposableBean {
    public Cat() {
        System.out.println("cat constructor...");
    }

    @Override
    public void destroy() throws Exception {
        System.out.println("cat destroy...");
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        System.out.println("cat init...");
    }
}

2. bean注入

@ComponentScan("cn.idea360.bean")
@Configuration
public class BeanConfigOfLifeCycle {

    @Bean(initMethod = "init", destroyMethod = "destroy")
    public Car car() {
        return new Car();
    }
}

3. 测试

/**
 * cat constructor...
 * cat init...
 * car constructor...
 * car init...
 * 容器创建完成
 * car destory...
 * cat destroy...
 */
@Test
public void test07() {
    AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(BeanConfigOfLifeCycle.class);
    System.out.println("容器创建完成");

    // 关闭容器
    applicationContext.close();
}

最后

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