从spring容器中取出注入的bean

从spring容器中取出注入的bean 工具类，代码如下：

package com.hyzn.fw.util;

import org.springframework.beans.BeansException;

import org.springframework.context.ApplicationContext;

import org.springframework.context.ApplicationContextAware;

import org.springframework.stereotype.Component;

/**

 * @ClassName: SpringBeanUtil

 * @Description: TODO  Spring获取bean的工具类，可用于在线程里面获取bean

 *                  需要在 类上 标注 @Component ，否则没有将此工具类 注入到spring容器中

 * @author xbq

 * @version 1.0

 * @date 2017-2-21 下午2:30:38

 */

@Component

public class SpringBeanUtil implements ApplicationContextAware{

    private static ApplicationContext applicationContext = null;

    // 获取ApplicationContext对象

    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {

        SpringBeanUtil.applicationContext = applicationContext;

    }

    /**

     * @Title: getBeanByName

     * @Description: TODO  通过bean的名字来获取Spring容器中的bean

     * @param beanName

     * @return

     * @return: Object

     */

    public static Object getBeanByName(String beanName) {

        if (applicationContext == null){

            return null;

        }

        return applicationContext.getBean(beanName);

    }

    public static <T> T getBean(Class<T> type) {

        return applicationContext.getBean(type);

    }

}