java - 使用 @SpringApplicationConfiguration 在多模块项目中运行域的测试会抛出 NoSuchBeanDefinitionException？

Question

我的多模块项目结构如下:

project-example (parent)
-- project-example-domain: contains DAOs and Services
-- project-example-service: contains Controllers

服务模块将域作为依赖项，因此服务知道域，但反之则不然。

因此，为了测试 ClientDAO 完整性(在本例中)，我进行了以下测试:

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = DAOConfiguration.class)
public class ClientDAOTests {

    @Autowired
    private ClientDAO dao;

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

}

当我运行它时，我得到这个异常:

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [javax.sql.DataSource] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1301)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1047)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:942)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:533)
    ... 51 more

最后是我的 DAOConfiguration

@Configuration
@PropertySource("classpath:persistence.properties")
@EnableJpaRepositories(basePackages = {"com.example.movies.domain.feature"})
@EnableTransactionManagement
public class DAOConfiguration {

    @Autowired
    private Environment env;

    @Autowired
    private DataSource dataSource;

    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory(EntityManagerFactoryBuilder builder) {
        LocalContainerEntityManagerFactoryBean entityManager = new LocalContainerEntityManagerFactoryBean();
        entityManager.setDataSource(this.dataSource);
        entityManager.setPackagesToScan(new String[] {"com.example.movies.domain"});
        JpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        entityManager.setJpaVendorAdapter(vendorAdapter);
        return entityManager;
    }

    @Bean
    public PlatformTransactionManager transactionManager(EntityManagerFactory emf) {
        JpaTransactionManager transactionManager = new JpaTransactionManager();
        transactionManager.setEntityManagerFactory(emf);
        return transactionManager;
    }

    @Bean
    public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
        return new PersistenceExceptionTranslationPostProcessor();
    }

}

当我从服务运行服务器时，它工作正常，Spring 生成了 DataSource bean。但是当我在域中运行测试时，我得到了前面提到的异常。

所以我认为我的问题是我向@SpringApplicationConfiguration传递了错误的参数。我不明白我必须传递什么...我应该传递带有 @SpringBootApplication 注释的 Application 类吗？在本例中，这是在服务模块内部，因此域不知道此类。您能解释一下 SpringApplicationConfiguration 应该采用什么参数作为导致我的测试失败的参数吗？提前致谢!

<小时/>

编辑

这是我位于服务层的 ApplicationRunner 类:

@SpringBootApplication
@Import({ServicesConfiguration.class, CustomDataBindingConfiguration.class, CustomMappingConfiguration.class})
@PropertySource(value = {"application.properties"})
public class ApplicationRunner {

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

}

Answer 1

我解决了同样的问题。

问题来自于@SpringApplicationConfiguration(classes = DAOConfiguration.class)。您必须引用一个用 @EnableAutoConfiguration 注解的类，以便 Spring Boot 自动注入(inject)数据源。 (这个注解一般继承自@SpringBootApplication)

您有多种选择:

• 从 @SpringApplicationConfiguration 引用使用 @SpringBootApplication 注解的应用程序类

• 将@EnableAutoConfiguration添加到DAOConfiguration类

• ...(你明白这一点)