text: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package io.github.dunwu.spring.core.bean.define.definition;
  
  import io.github.dunwu.spring.core.bean.define.factory.DefaultUserFactory;
  import io.github.dunwu.spring.core.bean.define.factory.UserFactory;
  import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
  import org.springframework.beans.factory.config.SingletonBeanRegistry;
  import org.springframework.context.annotation.AnnotationConfigApplicationContext;
  
  /**
   * 单体 Bean 注册实例
   *
   * @author <a href="mailto:mercyblitz@gmail.com">Mercy</a>
   * @since
   */
  public class Bean注册示例 {
  
      public static void main(String[] args) throws InterruptedException {
          // 创建 BeanFactory 容器
          AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext();
          // 创建一个外部 UserFactory 对象
          UserFactory userFactory = new DefaultUserFactory();
          SingletonBeanRegistry singletonBeanRegistry = applicationContext.getBeanFactory();
          // 注册外部单例对象
          singletonBeanRegistry.registerSingleton("userFactory", userFactory);
          // 启动 Spring 应用上下文
          applicationContext.refresh();
  
          // 通过依赖查找的方式来获取 UserFactory
          UserFactory userFactoryByLookup = applicationContext.getBean("userFactory", UserFactory.class);
          System.out.println("userFactory  == userFactoryByLookup : " + (userFactory == userFactoryByLookup));
  
          // 关闭 Spring 应用上下文
          applicationContext.close();
      }
  
  }
  