java - @Autowired 依赖注入(inject)在 junit 测试中没有发生

Question

我正在使用 Spring Boot 来引导 spring-data-neo4j 应用程序。我的单元测试(没有注入(inject)依赖项)运行良好，但是当我尝试使用 @Autowired 运行集成测试时依赖于@Service -带注释的类，它在 NoSuchBeanDefinitionException 上失败。

由于某种原因，上下文似乎没有加载到单元测试中，但我已经用 @SpringApplicationConfiguration(classes = AppConfig.class) 注释了测试。 - 我还需要在这里做些什么吗？

配置类

@Configuration
@EnableAutoConfiguration
@ComponentScan(basePackages = "net.foo.bar")
@EnableNeo4jRepositories(basePackages = "net.foo.bar.repo")
public class AppConfig extends Neo4jConfiguration {

    public AppConfig() {
        setBasePackage("net.foo.bar");
    }

    @Bean(destroyMethod = "shutdown")
    @Scope(BeanDefinition.SCOPE_SINGLETON)
    public GraphDatabaseService graphDatabaseService() {
        return new GraphDatabaseFactory().newEmbeddedDatabase(filePath);
    }

    public static void main(String[] args) {
        ApplicationContext ctx = SpringApplication.run(AppConfig.class, args);
    }
}

服务等级:

package net.foo.bar.core.service
@Service
public class PostService implements EntityService<PostDAO,Post> {

    @Autowired
    Neo4jTemplate template;
    //...
    //don't think anything else here is relevant
}

测试类:

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = AppConfig.class)
public class PostTests {
    @Autowired
    PostService postService;

    @Test
    public void someTest(){ 
        postService.doSomething();
        //...
    }

 }

堆栈跟踪:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'net.foo.bar.PostTests': ....
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [net.foo.bar.core.service.PostService] 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:1103)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:963)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:858)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:480)
... 31 common frames omitted

更新:

作为一种解决方法，我没有直接 Autowiring 我的服务，而是尝试 Autowiring 对 ApplicationContext 的引用。并通过调用 getBeanOfType() 实例化我的服务在我的setUp()方法:

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = Epublic.class)
public class PostTests {
    @Autowired
    ApplicationContext ctx;

    PostService service; 

    @Before
    public void setUp() {
        service = ctx.getBean("postServiceImpl", PostService.class);
    }
}

这是有效的，但我觉得我已经达到目标，但没有捕获重点......

Answer 1

您没有 @ComponentScan 的 basePackages。您只有 NeojConfiguration

@Configuration
@EnableAutoConfiguration
@ComponentScan(basePackages = { "net.foo.bar" })
@EnableNeo4jRepositories(basePackages = "net.foo.bar.repo")
public class AppConfig extends Neo4jConfiguration {

    public AppConfig() {
        setBasePackage("net.foo.bar");
    }

    @Bean(destroyMethod = "shutdown")
    @Scope(BeanDefinition.SCOPE_SINGLETON)
    public GraphDatabaseService graphDatabaseService() {
        return new GraphDatabaseFactory().newEmbeddedDatabase(filePath);
    }

    public static void main(String[] args) {
        ApplicationContext ctx = SpringApplication.run(AppConfig.class, args);
    }
}