spring boot 获取bean

1. 配置类

@Component
public class SpringContextUtil{

    private static ApplicationContext applicationContext;

    //获取上下文
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    //设置上下文
    public static void setApplicationContext(ApplicationContext applicationContext) {
        SpringContextUtil.applicationContext = applicationContext;
    }

    //通过名字获取上下文中的bean
    public static Object getBean(String name){
        return applicationContext.getBean(name);
    }

    //通过类型获取上下文中的bean
    public static Object getBean(Class<?> requiredType){
        return applicationContext.getBean(requiredType);
    }

}

2. 在启动类添加

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

3. 调用
   stuServiceImpl impl = (stuServiceImpl) SpringContextUtil.getBean(“stuServiceImpl”);
   List list = impl.sysQuery();