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This article mainly introduces "how to solve the problem of ring injection generated by Spring Boot". In daily operation, I believe many people have doubts about how to solve the problem of ring injection generated by Spring Boot. The editor consulted all kinds of data and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubt of "how to solve the problem of ring injection generated by Spring Boot". Next, please follow the editor to study!

Catalogue

Spring Boot generates ring injection

Cause of error

Solution method

Spring Boot cyclic injection pit

The reason for general loop injection is

Solution.

Spring Boot generates ring injection

* *

APPLICATION FAILED TO START

* *

Description:

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

| | MyController (field private com.zhxy.service.AService com.zhxy.controller.MyController.BService) |

↑ ↓

| | BService |

└─┘

Start spring boot to report the above error

Cause of error

AService is injected into BService, and BService is injected into AService.

Solution method

Add the Spirng annotation @ Lazy to AService in the implementation class of BService

@ Autowired @ Lazy private AService aService; the reason for pit general loop injection is

A dependency injection b injects A to form a closed loop, resulting in spring not knowing which one to create first when creating a bean, and will throw a bean creation exception

Solution.

Copy the last bean printed on the console, then search for the project globally, and annotate @ Lazy at all places where the bean is injected.

At this point, the study on "how to solve the problem of Spring Boot ring injection" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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