我有这样的多模块项目结构：
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，但不是。
因此，为了测试ClientDAO完整性（在这种情况下），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，出现以下异常：
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();
}
}
当我从该服务运行服务器时，它工作正常，Spring制作了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将错误的参数传递给@SpringApplicationConfiguration。我不明白我必须通过什么...我应该通过@SpringBootApplication注释将它通过Application类吗？在这种情况下，它位于Service模块内部，因此Domain不知道此类。您能解释一下SpringApplicationConfiguration应该作为参数使我的测试失败吗？提前致谢！
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);
}
}
最佳答案
我解决了同样的问题。
问题来自@SpringApplicationConfiguration(classes = DAOConfiguration.class)。
您必须引用一个用@EnableAutoConfiguration注释的类，以使数据源由Spring Boot自动注入。 （此注释通常是从@SpringBootApplication继承的）
您有几种选择：
从@SpringBootApplication引用用@SpringApplicationConfiguration注释的应用程序类
将@EnableAutoConfiguration添加到DAOConfiguration类
...（您明白这一点）