获取Spring的上下文环境ApplicationContext的最简单方式

public class SpringUtil {
       public static ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
       public static Object getBean(String serviceName){
             return context.getBean(serviceName);
       }
}

new ClassPathXmlApplicationContext("applicationContext.xml");

@Component
public class SpringContextUtil implements ApplicationContextAware {
         private static ApplicationContext applicationContext; // Spring应用上下文环境
         /*
          * 实现了ApplicationContextAware 接口，必须实现该方法；
          *通过传递applicationContext参数初始化成员变量applicationContext
          */
         public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
               SpringContextUtil.applicationContext = applicationContext;
         } 
         public static ApplicationContext getApplicationContext() {
                return applicationContext;
         }
          @SuppressWarnings("unchecked")
          public static <T> T getBean(String name) throws BeansException {
                     return (T) applicationContext.getBean(name);
           }
}

<bean id="springContextUtil" class="com.ecdatainfo.util.SpringContextUtil" singleton="true" />

ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");

public abstract class AbstractCreateRoomHandler implements ApplicationContextAware {
    //存放商家和处理器的映射关系
    private static final Map<Integer, Class<? extends AbstractCreateRoomHandler>> TYPE_HANDLER = new HashMap<>();
    private static ApplicationContext applicationContext;
    static {
        TYPE_HANDLER.put(BusinessCodeEnum.TUSE.getBusinessCode(), TuSeCreateRoomHandler.class);
        //todo 新的商家类型添加到此处
    }
    public static AbstractCreateRoomHandler getCreateRoomHandler(Integer productType) {
        Class<? extends AbstractCreateRoomHandler> clazz = TYPE_HANDLER.getOrDefault(productType, TuSeCreateRoomHandler.class);
        return applicationContext.getBean(clazz);
    }
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }