setApplicationContext 空指针

根据引用\[1\]的描述，出现空指针异常的原因是在调用setApplicationContext方法之前，applicationContext没有被正确实例化。为了解决这个问题，可以按照引用\[2\]中的建议，在主类上使用@Import注解导入getBean方法所在的类。具体做法是在@SpringBootApplication注解的类上添加@Import(SpringContextHolder.class)，如下所示：

@SpringBootApplication
@Import(SpringContextHolder.class)
public class AdminApplication {
    public static void main(String\[\] args) {
        SpringApplication.run(AdminApplication.class, args);
    }
}

这样做可以确保在调用setApplicationContext方法之前，applicationContext已经被正确实例化，从而避免空指针异常的问题。
#### 引用[.reference_title]
- *1* [实现ApplicationContextAware接口后调用时候报空指针NullPointerException异常](https://blog.csdn.net/CrazyRango/article/details/115556255)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insert_down1,239^v3^insert_chatgpt"}} ] [.reference_item]
- *2* [SpringBoot - 获取getBean方法以及ApplicationContext空指针问题解决](https://blog.csdn.net/hutuyaoniexi/article/details/126787251)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insert_down1,239^v3^insert_chatgpt"}} ] [.reference_item]
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