SpringBoot中循环依赖报错解决---The dependencies of some of the beans in the application context form a cycle

深碍√TFBOYSˉ_ 2024-04-03 11:24 66阅读 0赞

#### 循环依赖： ####

循环依赖就是循环引用，也就是两个或则两个以上的bean互相依赖对方，形成闭环。比如A类中有B属性，B类中有A属性

#### 一、报错信息 ####

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

![99fe33727749422ea65f0dc67e1419c0.png][]

#### 二、解决方案 ####

#### **1、修改配置文件** ####

根据Action中的提示

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.

不鼓励依赖循环引用，默认情况下禁止循环引用。更新应用程序以删除 Bean 之间的依赖关系循环。作为最后的手段，可以通过将 spring.main.allow-circular-references 设置为 true 来自动打破循环。因此可以在yml配置文件中设置来打破循环依赖

#### **修改yml** ####

spring:
        main:
            allow-circular-references: true

#### 2、添加注解，延迟加载 ####

这个是网上找到的解决方案，经过测试，问题顺利解决

由于在循环依赖中，Spring在初始化的时候不知道先加载哪个bean，因此可以通过使用@Lazy注解，放在其中一个bean上，让这个bean延迟加载，另一个bean就会先加载，进而解决循环依赖问题

![45871751036d4162903c4590aa97bdac.png][]

[99fe33727749422ea65f0dc67e1419c0.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/03/88ebe712faef4134b41d03e7e5f3221c.png
[45871751036d4162903c4590aa97bdac.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/03/0ed6f30ed90643b7b25e2492e2be72cc.png

SpringBoot中循环依赖报错解决---The dependencies of some of the beans in the application context form a cycle

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