spring上下文管理bean,用于一些sping无法管理到的地方

1、在applicationContext-bean.xml中配置

<bean id="springContextUtil" class="com.vst.search.common.util.SpringContextUtil" lazy-init="false"/>

2、新建一个类

package com.vst.search.common.util;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

public class SpringContextUtil implements ApplicationContextAware{
private static ApplicationContext applicationContext;

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

  public static ApplicationContext getApplicationContext(){
    return applicationContext;
  }

  public static Object getBean(String name) throws BeansException{
    return applicationContext.getBean(name);
  }

  public static <T> T getBean(Class<T> clazz, String beanName) throws BeansException{
    return applicationContext.getBean(beanName, clazz);
  }

  public static boolean containsBean(String name){
    return applicationContext.containsBean(name);
  }
}

注:生产中会有很多地方无法使用@Autowired/@Resource进行依赖注入,可以配置spring上下文来管理bean

posted on 2019-07-25 13:53  牛鼻子老赵  阅读(230)  评论(0编辑  收藏  举报