僅在運行java -jar時發生循環依賴關係，而不是在使用spring-boot時運行：運行

Question

我一直在Intellij IDEA內開發一個彈簧引導應用程序。它現在已經完成，我即將把它發送給其他用戶。

我用mvn clean install構建它，並嘗試用java -jar target/my-app.jar啓動內置的jar文件。

令我吃驚的失敗與一個異常（難讀，但至少斬幾行）

Exception encountered during context initialization - cancelling refresh attempt: 
org.springframework.beans.factory.UnsatisfiedDependencyException: 
Error creating bean with name 'userController': 
Unsatisfied dependency expressed through field 'userClient'; 
nested exception is org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name '***.client.userclient.UserClient': 
FactoryBean threw exception on object creation; 
nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: 
Error creating bean with name 'org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$EnableWebMvcConfiguration': 
Unsatisfied dependency expressed through method 'setConfigurers' parameter 0; 
nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: 
Error creating bean with name 'webMvcConfig': 
Unsatisfied dependency expressed through field 'authenticationInterceptor'; 
nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: 
Error creating bean with name 'authenticationInterceptor': 
Unsatisfied dependency expressed through field 'authenticationClient'; 
nested exception is org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name '***.client.authenticationclient.AuthenticationClient': 
FactoryBean threw exception on object creation; 
nested exception is org.springframework.beans.factory.BeanCurrentlyInCreationException: 
Error creating bean with name 'mvcResourceUrlProvider': 
Requested bean is currently in creation: Is there an unresolvable circular reference? 

我也得到了一些ASCII藝術上的依賴關係

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

Description: 

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

| userController (field ****.client.userclient.UserClient ****.controller.user.UserController.userClient) 
↑  ↓ 
| ****.client.userclient.UserClient 
↑  ↓ 
| org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$EnableWebMvcConfiguration 
↑  ↓ 
| webMvcConfig (field ****.AuthenticationInterceptor ****.WebMvcConfig.authenticationInterceptor) 
↑  ↓ 
| authenticationInterceptor (field ****.client.authenticationclient.AuthenticationClient ****.AuthenticationInterceptor.authenticationClient) 
↑  ↓ 
| ****.client.authenticationclient.AuthenticationClient 
↑  ↓ 
| mvcResourceUrlProvider 
└─────┘ 

所以我嘗試運行它與mvn spring-boot:run，它的工作原理！

我以爲java -jar和mvn spring-boot:run運行的印象是一樣的。我錯過了什麼？

我想我可以修復循環依賴，但現在困擾我的是爲什麼這兩個選手不同。

謝謝。

Answer 1

您必須使用maven-shade-plugin或類似的東西打包獨立使用的所有依賴關係。但是你確定你想單獨運行這個jar，而不是將它建立爲war，並將其部署到像Apache Tomcat這樣的應用服務器上？