我最近將應用程序從Spring Boot 1.5.X遷移到Spring Boot 2.X ，發現覆蓋Spring Bean定義存在問題。 其中一種配置是在Kotlin中遵循的：

@Configuration class DynamoConfig {@Beanfun dynamoDbAsyncClient(dynamoProperties: DynamoProperties): DynamoDbAsyncClient {...}@Beanfun dynampoDbSyncClient(dynamoProperties: DynamoProperties): DynamoDbClient {...} }

現在，為了進行測試，我想覆蓋這兩個bean定義，并按照以下原則進行操作：

@SpringBootTest class DynamoConfigTest {@Testfun saveHotel() {val hotelRepo = DynamoHotelRepo(localDynamoExtension.asyncClient!!)val hotel = Hotel(id = "1", name = "test hotel", address = "test address", state = "OR", zip = "zip")val resp = hotelRepo.saveHotel(hotel)StepVerifier.create(resp).expectNext(hotel).expectComplete().verify()}@TestConfigurationclass SpringConfig {@Beanfun dynamoDbAsyncClient(dynamoProperties: DynamoProperties): DynamoDbAsyncClient {...}@Beanfun dynamoDbSyncClient(dynamoProperties: DynamoProperties): DynamoDbClient {...}} }

這種覆蓋類型適用于Spring Boot 1.5.X，但不適用于Spring Boot 2.1.X，并顯示以下錯誤：

Invalid bean definition with name 'dynamoDbAsyncClient' defined in sample.dyn.repo.DynamoConfigTest$SpringConfig:.. There is already .. defined in class path resource [sample/dyn/config/DynamoConfig.class]] bound

我認為這種行為是正確的，不允許以這種方式覆蓋bean是應用程序的正確默認行為，但是我確實希望能夠覆蓋bean進行測試，這要歸功于Stack Overflow答案和Spring Boot 2.1.X發行說明 ，解決方法是允許使用屬性“ spring.main.allow-bean-definition-overriding = true”進行覆蓋，因此，通過進行此更改，測試如下所示：

@SpringBootTest(properties = ["spring.main.allow-bean-definition-overriding=true"]) class DynamoConfigTest {@Testfun saveHotel() {val hotelRepo = DynamoHotelRepo(localDynamoExtension.asyncClient!!)val hotel = Hotel(id = "1", name = "test hotel", address = "test address", state = "OR", zip = "zip")val resp = hotelRepo.saveHotel(hotel)StepVerifier.create(resp).expectNext(hotel).expectComplete().verify()}@TestConfigurationclass SpringConfig {@Beanfun dynamoDbAsyncClient(dynamoProperties: DynamoProperties): DynamoDbAsyncClient {...}@Beanfun dynamoDbSyncClient(dynamoProperties: DynamoProperties): DynamoDbClient {...}} }

翻譯自: https://www.javacodegeeks.com/2019/01/spring-boot-overriding-bean-definition.html

總結

以上是生活随笔為你收集整理的Spring-Boot 2.1.x和主要的bean定义的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。