业务描述：创建一个cache类然后交给spring 管理。
@Component
@Scope("singleton")
public class Cache {
public Cache() {
System.out.println("cache()");
}
@PostConstruct
public void init() {
System.out.println("init()");
}
@PreDestroy
public void destory() {
System.out.println("destory");
}
}
修改sringboot 启动类，进行bean的获取及测试。
package com.cy;
@SpringBootApplication
public class CgbSpringbootApplication implements ApplicationContextAware {
private static AnnotationConfigApplicationContext ctx;
@Override
public void setApplicationContext(ApplicationContext
applicationContext) throws BeansException {
ctx=(AnnotationConfigApplicationContext)applicationContext;
}
public static void main(String[] args) {
SpringApplication.run(CgbSpringbootApplication.class, args);
System.out.println(ctx.getBean("cache"));
System.out.println(ctx.getBean("cache"));
ctx.close();
}
}