怀疑与信仰，两者都是必需的。怀疑能把昨天的信仰摧毁，替明日的信仰开路。——罗曼·罗兰
今天springboot3使用r2dbc踩坑
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.ruben.repository.UserRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@jakarta.annotation.Resource(shareable=true, lookup="", name="", description="", authenticationType=CONTAINER, type=java.lang.Object.class, mappedName="")}
依赖大概是：
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-r2dbc</artifactId> <version>3.0.2</version> </dependency> <dependency> <groupId>io.asyncer</groupId> <artifactId>r2dbc-mysql</artifactId> <version>1.0.3</version> </dependency>
使用时：
import org.springframework.data.repository.reactive.ReactiveCrudRepository; import org.springframework.stereotype.Repository; import reactor.core.publisher.Flux; @Repository public interface UserRepository extends ReactiveCrudRepository<User, Long>{ }
乍一看没啥问题，但就是报错，最后发现控制台打印了一句INFO等级的日志：
2023-10-28T08:32:14.926+08:00 INFO [im-logic-service,,,] 50350 --- [ main] .RepositoryConfigurationExtensionSupport : Spring Data R2DBC - Could not safely identify store assignment for repository candidate interface com.ruben.repository.RoomRepository; If you want this repository to be a R2DBC repository, consider annotating your entities with one of these annotations: org.springframework.data.relational.core.mapping.Table (preferred), or consider extending one of the following types with your repository: org.springframework.data.r2dbc.repository.R2dbcRepository
原来是需要在实体类上加@Table注解或者接口继承R2dbcRepository。。。
