我有 spring-boot-starter-data-jpa 和 spring-boot-starter-web . 我尝试使用 Spring jpa 从 mysql 加载 List<Project> 但是在控制器中看到BeanCreationException .
org.springframework.beans.factory.BeanCreationException：创建名为'controller'的bean时出错：注入自动连接的依赖项失败;嵌套异常是org.springframework.beans.factory.BeanCreationException：无法自动装配字段：private com.project.data.spring_jpa.ProjectRepository com.project.application.Controller.repository;嵌套异常是org.springframework.beans.factory.NoSuchBeanDefinitionException：找不到[com.project.data.spring_jpa.ProjectRepository]类型的限定bean用于依赖：预期至少有1个bean有资格作为此依赖项的autowire候选者 . 依赖注释：{@ org.springframework.beans.factory.annotation.Autowired（required = true）}
Controller.java：
...
@RestController
public class Controller {
...
@Autowired
private ProjectRepository repository;
private ProjectAccessor projectAccessor = manager.createAccessor(ProjectAccessor.class);
public void setRepository(ProjectRepository repository){
this.repository = repository;
}
@RequestMapping("/test")
@ResponseBody
public List<Project> test() {
System.out.println("mysql test");
return repository.findAll();
}
...
ProjectRepository.java：
public interface ProjectRepository extends CrudRepository<Project, Long>{
List<Project> findAll();
}
1 回答
你在 ProjectRepository 上写了
@Repository注释吗？确保使用 @EnableJpaRepositories 在配置上启用了JpaRepository