springboot Junit测试NoClassDefFoundError EntityManagerFactoryBuilderImpl

Question

我创建了一个springboot(2)webflux项目如下：

JPA 实体

@Entity
@Table(name = "users")
public class User implements Serializable
{
...
}

Spring 存储库

public interface UserRepository extends CrudRepository<User, Long>
{
}

服务

@Service
public class UserService
{
    @Autowired
    private UserRepository userRepo;
    ...
}

Webflux 处理程序

@Component
public class UserHandler
{
    @Autowired
    private UserService userService;

    public Mono<ServerResponse> getUser(ServerRequest request)
    {
    ...
    }
}

路由配置

@Configuration
public class RouteConfiguration
{
    @Bean
    public static RouterFunction<ServerResponse> userRoutes(UserHandler userHandler)
    {
        return RouterFunctions.route(RequestPredicates.GET("/user"), userHandler:: getUser);
    }

网络应用程序

@SpringBootApplication
public class WebApplication
{
    public static void main(String[] args)
    {
        SpringApplication.run(WebApplication.class);
    }
}

POM

<dependencies>
    <!-- Compile -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-webflux</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>javax.xml.bind</groupId>
        <artifactId>jaxb-api</artifactId>
        <version>2.3.0</version>
    </dependency>
    <!-- Provided -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>
    <!-- Runtime -->
    <dependency>
        <groupId>org.postgresql</groupId>
        <artifactId>postgresql</artifactId>
        <scope>runtime</scope>
    </dependency>
    <!-- Test -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>io.projectreactor</groupId>
        <artifactId>reactor-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>com.h2database</groupId>
        <artifactId>h2</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

一切正常运行很好，我可以启动我的服务器并使用它。我现在想编写一些测试。这是我所做的：

@RunWith(SpringRunner.class)
@ContextConfiguration(classes = WebApplication.class)
public class UserHandlerTest
{
    @Autowired
    private ApplicationContext context;
    @MockBean
    private UserService userService;
    private WebTestClient testClient;

    @Before
    public void setUp()
    {
        testClient = WebTestClient.bindToApplicationContext(context).build();
    }

    @Test
    public void testUser()
    {
    ...
    }
}

无论我尝试过什么，我在 "mvn clean install" 过程中遇到休眠依赖项错误：

[ERROR] testUser(...UserHandlerTest) Time elapsed: 0 s <<< ERROR! java.lang.IllegalStateException: Failed to load ApplicationContext Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl Caused by: java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl

我知道 JPA 以阻塞方式工作，但我想避免在该项目中使用 NoSQL DB。我错过了什么？非常感谢您的帮助！

Answer 1

您可能缺少我们需要为 src/main/resources 下的数据源提供的详细信息。你可以查看 https://github.com/hantsy/spring-reactive-sample/blob/master/boot-data-mongo/src/main/resources/application.yml。这可能对你有帮助。

Answer 2

为了测试我的 Spring Webflux 控制器，我最终使用了 WebFluxTest 注释。它按预期工作：

@RunWith(SpringRunner.class)
@ContextConfiguration(classes = {RouteConfiguration.class, UserHandler.class})
@WebFluxTest
public class UserHandlerTest
{
    @Autowired
    private ApplicationContext context;
    @MockBean(name="userService")
    private UserService userService;
    private WebTestClient testClient;

    @Before
    public void setUp()
    {
        testClient = WebTestClient.bindToApplicationContext(context).build();
    }

    ...

因为我不使用 RestController 注释而是使用功能端点，所以我不得不使用 ContextConfiguration 并手动实例化 WebTestClient。

springboot Junit测试NoClassDefFoundError EntityManagerFactoryBuilderImpl

Springboot Junit test NoClassDefFoundError EntityManagerFactoryBuilderImpl

spring-test

spring-data-jpa

spring-boot

spring-webflux