java 策略模式2种示例

@Component
public class StrategyOne {

    public static final Map SERVICE_MAP = new ConcurrentHashMap<>();

    public StrategyOne(List login) {
        System.out.println("开始注入策略");
        login.forEach(t -> {
            System.out.println("当前策略:" + t.getClass().getName());
            SERVICE_MAP.put(t.getLoginType(), t);
        });
        System.out.println("注入策略完毕");
    }

    public LoginService getHandler(String type) {
        return SERVICE_MAP.get(type);
    }
}

@Component
public class StrategyTwo implements ApplicationContextAware, InitializingBean {
    private ApplicationContext applicationContext;
    private static final Map SERVICE_MAP = new ConcurrentHashMap<>();

    @Override
    public void afterPropertiesSet() {
        applicationContext.getBeansOfType(LoginServiceBiz.class).values().forEach(h -> SERVICE_MAP.put(h.getLoginType(), h));
    }

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }

    public LoginService getHandler(String type) {
        return SERVICE_MAP.get(type);
    }


}