The dependencies of some of the beans in the application context form a cycle:

做Springboot项目时突然访问不到服务器了，失败原因的描述是：应用程序上下文中某些bean的依赖关系形成一个循环了，也就是在A类中引用了B类，而在B类中又引用了A类的意思，在控制台的Action中也明确给出了解决方法：it may be possible to break the cycle automatically by setting spring.main.allow-circular-references to true.也就是可以通过在application.yml中将spring.main.allow-circular-references设置为true来自动打破循环。

详细信息：

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2023-04-14 16:36:58.843 ERROR 16448 --- [  restartedMain] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

The dependencies of some of the beans in the application context form a cycle:

┌──->──┐
|  com.github.pagehelper.autoconfigure.PageHelperAutoConfiguration
└──<-──┘


Action:

Relying upon circular references is discouraged and they are prohibited by default. Update your application to remove the dependency cycle between beans. As a last resort, it may be possible to break the cycle automatically by setting spring.main.allow-circular-references to true.

解决方法：

        可以通过在application.yml中将spring.main.allow-circular-references设置为true来自动打破循环。

spring:
    main:
        allow-circular-references: true