springboot获取上下文ApplicationContext

在springboot主程序里改成

public static void main(String[] args) {
//        SpringApplication.run(SpringbootAPP.class, args);换成下面
    SpringApplication sa = new SpringApplication(SpringbootAPP.class);
    sa.addListeners(new MainBusiListeners());
    sa.run(args);
}

package com.xxx.xxxx;

import com.xxx.utils.SpringContextUtils;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextRefreshedEvent;

/**
 * 启动监听
 */
public class MainBusiListeners implements ApplicationListener<ContextRefreshedEvent> {
    @Override
    public void onApplicationEvent(ContextRefreshedEvent event) {
        SpringContextUtils.setApplicationContextByMain(event.getApplicationContext());
    }
}

@Component
public class SpringContextUtils {

    private static ApplicationContext applicationContext;

    public static void setApplicationContextByMain(ApplicationContext applicationContext) {
        if (SpringContextUtils.applicationContext == null) {
            SpringContextUtils.applicationContext = applicationContext;
        }
    }

参考文章：https://www.cnblogs.com/qq931399960/p/10184151.html