BeanFactory beanFactory = new ClassPathXmlApplicationContext("classpath.xml");

BeanFactory beanFactory = new FileSystemXmlApplicationContext("fileSystemConfig.xml");

public class BeanFactoryDemo {

	public static void main(String[] args) {
		BeanFactory beanFactory = new ClassPathXmlApplicationContext("spring/spring-dependency-lookup.xml");
		lookupByType(beanFactory);
		lookupByNameInRealTime(beanFactory);
		lookupByNameInLazy(beanFactory);
		lookupByAnnotation(beanFactory);
	}

	public static void lookupByType(BeanFactory beanFactory) {
		SysUser user = beanFactory.getBean(SysUser.class);
		System.out.println("SysUser = " + user);
	}

	public static void lookupByNameInRealTime(BeanFactory beanFactory) {
		User user = (User) beanFactory.getBean("user");
		System.out.println("user = " + user);
	}

	public static void lookupByNameInLazy(BeanFactory beanFactory) {
		ObjectFactory<User> objectFactory = (ObjectFactory<User>) beanFactory.getBean("objectFactory");
		User user = objectFactory.getObject();
		System.out.println("user = " + user);
	}

	public static void lookupByAnnotation(BeanFactory beanFactory) {
		if (beanFactory instanceof ListableBeanFactory) {
			ListableBeanFactory listableBeanFactory = (ListableBeanFactory) beanFactory;
			Map<String, Object> users = listableBeanFactory.getBeansWithAnnotation(Super.class);
			System.out.println("users = " + users);
		}
	}

}

ApplicationContext context =
      new ClassPathXmlApplicationContext(new String[] {"services.xml", "daos.xml"});

// create and configure beans
ApplicationContext context =
new ClassPathXmlApplicationContext(new String[] {"services.xml", "daos.xml"});
// retrieve configured instance
PetStoreService service = context.getBean("petStore", PetStoreService.class);
// use configured instance
List<String> userList = service.getUsernameList();

public class AnnotationRequired {
    private String name;
    private String sex;

    public String getName() {
        return name;
    }

    /**
     * @Required 注解用于bean属性的setter方法并且它指示，受影响的bean属性必须在配置时被填充在xml配置文件中，
     *           否则容器将抛出BeanInitializationException。
     */
    @Required
    public void setName(String name) {
        this.name = name;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }
}

public class AnnotationAutowired {
    private static final Logger log = LoggerFactory.getLogger(AnnotationRequired.class);

    @Autowired
    private Apple fieldA;

    private Banana fieldB;

    private Orange fieldC;

    public Apple getFieldA() {
        return fieldA;
    }

    public void setFieldA(Apple fieldA) {
        this.fieldA = fieldA;
    }

    public Banana getFieldB() {
        return fieldB;
    }

    @Autowired
    public void setFieldB(Banana fieldB) {
        this.fieldB = fieldB;
    }

    public Orange getFieldC() {
        return fieldC;
    }

    public void setFieldC(Orange fieldC) {
        this.fieldC = fieldC;
    }

    public AnnotationAutowired() {}

    @Autowired
    public AnnotationAutowired(Orange fieldC) {
        this.fieldC = fieldC;
    }

    public static void main(String[] args) throws Exception {
        AbstractApplicationContext ctx =
                        new ClassPathXmlApplicationContext("spring/spring-annotation.xml");

        AnnotationAutowired annotationAutowired =
                        (AnnotationAutowired) ctx.getBean("annotationAutowired");
        log.debug("fieldA: {}, fieldB:{}, fieldC:{}", annotationAutowired.getFieldA().getName(),
                        annotationAutowired.getFieldB().getName(),
                        annotationAutowired.getFieldC().getName());
        ctx.close();
    }
}

public class AnnotationQualifier {
    private static final Logger log = LoggerFactory.getLogger(AnnotationQualifier.class);

    @Autowired
    @Qualifier("dog") /** 去除这行，会报异常 */
    Animal dog;

    Animal cat;

    public Animal getDog() {
        return dog;
    }

    public void setDog(Animal dog) {
        this.dog = dog;
    }

    public Animal getCat() {
        return cat;
    }

    @Autowired
    public void setCat(@Qualifier("cat") Animal cat) {
        this.cat = cat;
    }

    public static void main(String[] args) throws Exception {
        AbstractApplicationContext ctx =
                new ClassPathXmlApplicationContext("spring/spring-annotation.xml");

        AnnotationQualifier annotationQualifier =
                (AnnotationQualifier) ctx.getBean("annotationQualifier");

        log.debug("Dog name: {}", annotationQualifier.getDog().getName());
        log.debug("Cat name: {}", annotationQualifier.getCat().getName());
        ctx.close();
    }
}

abstract class Animal {
    public String getName() {
        return null;
    }
}

class Dog extends Animal {
    public String getName() {
        return "狗";
    }
}

class Cat extends Animal {
    public String getName() {
        return "猫";
    }
}

public class AnnotationResource {
    private static final Logger log = LoggerFactory.getLogger(AnnotationResource.class);

    @Resource(name = "flower")
    Plant flower;

    @Resource(name = "tree")
    Plant tree;

    public Plant getFlower() {
        return flower;
    }

    public void setFlower(Plant flower) {
        this.flower = flower;
    }

    public Plant getTree() {
        return tree;
    }

    public void setTree(Plant tree) {
        this.tree = tree;
    }

    public static void main(String[] args) throws Exception {
        AbstractApplicationContext ctx =
                        new ClassPathXmlApplicationContext("spring/spring-annotation.xml");

        AnnotationResource annotationResource =
                        (AnnotationResource) ctx.getBean("annotationResource");
        log.debug("type: {}, name: {}", annotationResource.getFlower().getClass(), annotationResource.getFlower().getName());
        log.debug("type: {}, name: {}", annotationResource.getTree().getClass(), annotationResource.getTree().getName());
        ctx.close();
    }
}

public class AnnotationPostConstructAndPreDestroy {
    private static final Logger log = LoggerFactory.getLogger(AnnotationPostConstructAndPreDestroy.class);

    @PostConstruct
    public void init() {
        log.debug("call @PostConstruct method");
    }

    @PreDestroy
    public void destroy() {
        log.debug("call @PreDestroy method");
    }
}

public class AnnotationInject {
    private static final Logger log = LoggerFactory.getLogger(AnnotationInject.class);
    @Inject
    Apple fieldA;

    Banana fieldB;

    Orange fieldC;

    public Apple getFieldA() {
        return fieldA;
    }

    public void setFieldA(Apple fieldA) {
        this.fieldA = fieldA;
    }

    public Banana getFieldB() {
        return fieldB;
    }

    @Inject
    public void setFieldB(Banana fieldB) {
        this.fieldB = fieldB;
    }

    public Orange getFieldC() {
        return fieldC;
    }

    public AnnotationInject() {}

    @Inject
    public AnnotationInject(Orange fieldC) {
        this.fieldC = fieldC;
    }

    public static void main(String[] args) throws Exception {
        AbstractApplicationContext ctx =
                        new ClassPathXmlApplicationContext("spring/spring-annotation.xml");
        AnnotationInject annotationInject = (AnnotationInject) ctx.getBean("annotationInject");

        log.debug("type: {}, name: {}", annotationInject.getFieldA().getClass(),
                        annotationInject.getFieldA().getName());

        log.debug("type: {}, name: {}", annotationInject.getFieldB().getClass(),
                        annotationInject.getFieldB().getName());

        log.debug("type: {}, name: {}", annotationInject.getFieldC().getClass(),
                        annotationInject.getFieldC().getName());

        ctx.close();
    }
}

@Configuration
public class AnnotationConfiguration {
    private static final Logger log = LoggerFactory.getLogger(JavaComponentScan.class);

    @Bean
    public Job getPolice() {
        return new Police();
    }

    public static void main(String[] args) {
        AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext(AnnotationConfiguration.class);
        ctx.scan("org.zp.notes.spring.beans");
        ctx.refresh();
        Job job = (Job) ctx.getBean("police");
        log.debug("job: {}, work: {}", job.getClass(), job.work());
    }
}

public interface Job {
    String work();
}

@Component("police")
public class Police implements Job {
    @Override
    public String work() {
        return "抓罪犯";
    }
}

@Configuration
public class AppConfig {
    @Bean
    public MyService myService() {
        return new MyServiceImpl();
    }
}

/**
 * SayService 是有状态，如果 SayService 是单例的话必然会 OOM
 */
@Slf4j
public abstract class SayService {

   List<String> data = new ArrayList<>();

   public void say() {
      data.add(IntStream.rangeClosed(1, 1000000)
         .mapToObj(__ -> "a")
         .collect(Collectors.joining("")) + UUID.randomUUID().toString());
      log.info("I'm {} size:{}", this, data.size());
   }

}

@Service
@Slf4j
public class SayBye extends SayService {

   @Override
   public void say() {
      super.say();
      log.info("bye");
   }

}

@Service
@Slf4j
public class SayHello extends SayService {

	@Override
	public void say() {
		super.say();
		log.info("hello");
	}

}

@Slf4j
@RestController
@RequestMapping("beansingletonandorder")
public class BeanSingletonAndOrderController {

   @Autowired
   List<SayService> sayServiceList;
   @Autowired
   private ApplicationContext applicationContext;

   @GetMapping("test")
   public void test() {
      log.info("====================");
      sayServiceList.forEach(SayService::say);
   }

}

@Scope(value = ConfigurableBeanFactory.SCOPE_PROTOTYPE)

@Scope(value = ConfigurableBeanFactory.SCOPE_PROTOTYPE, proxyMode = ScopedProx)