Question

我知道问了这些问题（Did not find handler method），但在尝试了多种解决方案后，我仍然坚持不懈。所以我的问题是：我不能在我的项目中同时使用REST和JPA。 com.db.ruf：WRepository.class：

@NoRepositoryBean
@Component
public interface WRepository <T, ID extends Serializable>
        extends JpaRepository<T, ID> {
}

com.db.ruf：WRepositoryImpl.class：

public class WRepositoryImpl<T, ID extends Serializable>
        extends SimpleJpaRepository<T, ID> implements WRepository<T, ID> {

    private EntityManager entityManager;

    // There are two constructors to choose from, either can be used.
    public WRepositoryImpl(Class<T> domainClass, EntityManager entityManager) {
        super(domainClass, entityManager);

        // This is the recommended method for accessing inherited class dependencies.
        this.entityManager = entityManager;
    }
}

com.db：MyRepositoryFactoryBean.class

public class MyRepositoryFactoryBean <R extends JpaRepository<T, I>, T, I extends Serializable>
        extends JpaRepositoryFactoryBean<R, T, I> {
    /**
     * Creates a new {@link JpaRepositoryFactoryBean} for the given repository interface.
     *
     * @param repositoryInterface must not be {@literal null}.
     */
    public MyRepositoryFactoryBean(Class<? extends R> repositoryInterface) {
        super(repositoryInterface);
    }

    protected RepositoryFactorySupport createRepositoryFactory(EntityManager entityManager) {

        return new MyRepositoryFactory(entityManager);
    }

    private static class MyRepositoryFactory<T, I extends Serializable> extends JpaRepositoryFactory {

        private EntityManager entityManager;

        public MyRepositoryFactory(EntityManager entityManager) {
            super(entityManager);

            this.entityManager = entityManager;
        }

        protected Object getTargetRepository(RepositoryMetadata metadata) {

            return new WRepositoryImpl<T, I>((Class<T>) metadata.getDomainType(), entityManager);
        }

        protected Class<?> getRepositoryBaseClass(RepositoryMetadata metadata) {

            // The RepositoryMetadata can be safely ignored, it is used by the JpaRepositoryFactory
            //to check for QueryDslJpaRepository's which is out of scope.
            return WRepository.class;
        }
    }
}

com.rest。：WebadminRESTController.class

@RestController
@Component

public class WebadminRESTController {

    @Autowired
   WRepository<ExternalLink, Long> wRepositoryImpl;

    @RequestMapping(value = "/allExternalLinks", method = RequestMethod.GET)
    public ResponseEntity<?> allExternalLinks() {
...
     }
}

COM：

@SpringBootApplication
@EnableAutoConfiguration
@EnableJpaRepositories(basePackages = "com.db.ruf", repositoryFactoryBeanClass = MyRepositoryFactoryBean.class)
@ComponentScan(basePackages = "com", resourcePattern = "com.*")

@EntityScan({"com.db"})


public class WebadminApplication {

    public static void main(String[] args) {
        SpringApplication.run(WebadminApplication.class, args);
    }
}

在这种情况下，我得到：

未找到[/ allExternalLinks]
的处理程序方法

如果我改变了 @ComponentScan（basePackages =＆＃34; com＆＃34;，resourcePattern =＆＃34; com。*＆＃34;）到@ComponentScan（basePackages =＆＃34; com＆＃34;）或@ComponentScan我得到：< / p>

引起： org.springframework.beans.factory.NoSuchBeanDefinitionException：没有合格的bean类型＆＃39; com.db.ruf.WRepository＆＃39;可用：预计至少有1个符合条件的bean 作为autowire候选人。依赖注释： {@ org.springframework.beans.factory.annotation.Autowired（所需=真）}

我真的不知道出了什么问题。任何人都可以这么好解释吗？提前谢谢

Answer 1

在@Repository上使用WRepositoryImpl.java。并修改WebadminRESTController.java：

@Autowired WRepositoryImpl<ExternalLink, Long> wRepositoryImpl;

Answer 2

无意中我找到了解决方案（不要认为它是最好的解决方案，但至少它有效）：

Func<Task> func

和

public interface  ExternalLinksRepo extends  CrudRepository<ExternalLink, Long> {
...
}

然后wRepositoryImpl自动创建为WRepositoryImpl的实例

感谢所有人，特别是对Cepr0

带有REST服务的Spring Boot JPA

2 个答案: