自己管理bean

package com.synqnc.util;

import org.springframework.context.ApplicationContext;

/**
 * @author wangyg
 * description SpringContextUtil
 * @date 2020/3/13 18:54
 */
public class SpringContextUtil {
    //spring上下文
    private static ApplicationContext applicationContext;

    /**
     * 实现ApplicationContextAware接口的回调方法，设置上下文环境
     * @param applicationContext
     */
    public static void setApplicationContext(ApplicationContext applicationContext){
        if(null==SpringContextUtil.applicationContext)
            SpringContextUtil.applicationContext=applicationContext;
    }

    public static ApplicationContext getApplicationContext(){
        return applicationContext;
    }
    /**
     * 通过name获取 Bean.
     *
     * @param name
     * @return
     */
    public static Object getBean(String name) {
        return getApplicationContext().getBean(name);

    }

    /**
     * 通过name获取 Bean.
     *
     * @param clazz
     * @return
     */
    public static <T> T getBean(Class<T> clazz) {
        return getApplicationContext().getBean(clazz);
    }

    /**
     * 通过name,以及Clazz返回指定的Bean
     *
     * @param name
     * @param clazz
     * @return
     */
    public static <T> T getBean(String name, Class<T> clazz) {
        return getApplicationContext().getBean(name, clazz);
    }
}

    public static void main(String[] args) {
        ConfigurableApplicationContext app = SpringApplication.run(BudataApplication.class, args);
        SpringContextUtil.setApplicationContext(app);
    }

sendInstructionService = (SendInstructionService) SpringContextUtil.getBean("sendInstructionService");