服务bean在spring引导中未自动连接

我正在创建一个具有一个控制器、服务和存储库类的Spring boot应用程序。所有这些都定义如下：

主类

@SpringBootApplication
public class MainClass  extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(MainClass.class);
    }

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

}

控制器：

@RestController
@EnableAutoConfiguration
public class ExampleController {

    public static final Logger logger = LoggerFactory.getLogger(ExampleController.class);

    private CustomReportService customReportService;

    @Autowired
    public void setCustomReportService(CustomReportService customReportService){
        this.customReportService = customReportService;
    }

    @RequestMapping(value="/api/report/list", method= RequestMethod.GET)
    public ResponseEntity<Collection<CustomReport>> listAllCustomReports(){
        return new ResponseEntity<>((Collection<CustomReport>) customReportService.listAllCustomReports(), HttpStatus.OK);
    }
}

请告诉我哪里出了问题

---

谢谢

从控制器中删除

@EnableAutoConfiguration

，它已经在

@SpringBootApplication

中。 您的MainClass应该在根包中。 还要尝试将

@ComponentScan（“your.root.package”）

添加到MainClass中

确保您放置了主Spring引导应用程序条目 类

MainClass

位于工作包的顶部，以及所有其他 下的课程

---

无需将

@EnableAutoConfiguration

添加到 控制器，如

@SpringBootApplication

中已经包含了它

在

CustomReportServiceImpl

中，您正在混合字段和构造函数自动 对于

customReportRepository

，请仅选择一个

---

您的类

CustomReportServiceImpl

不是由Spring管理的，就是不能被Spring发现。请查看配置类中的

@ComponentScan

注释，并对其进行相应的编辑，以便Spring container可以找到它。请告诉我它是否修复了它

@EnableAutoConfiguration

仅适用于

@configuration

类。因此，在您的情况下，它不起任何作用，使用

@SpringBootApplication

也暗示了这一点。我怀疑您的

MainClass

f不在

com.test

中，而是在它的某个子包中。建议将引导类放在您案例中可能的最高包中

com.test

或任何实际包中。由于

@ComponentScan

也由

@SpringBootApplication

暗示，但是它是从包开始的，

MainClass

是在中定义的，而不是在其他包中（因此是根包）。@M.Deinum.您是正确的。我的主课是在一个子包里。当我把它放到根包中时，一切都正常了。是的，不需要添加EnableAutoConfiguration注释。当我的服务没有自动连线时，我只是添加了它，看看这是否会有什么不同。忘了把它取下来。谢谢@AbdullahKhan正如Deinum在我将主类移动到根包时所建议的那样，服务注入起了作用。我不需要添加ComponentScan注释。谢谢你的帮助！

public interface CustomReportService {
    Iterable<CustomReport> listAllCustomReports();
}

@Service
public class CustomReportServiceImpl implements CustomReportService{

    @Autowired
    private CustomReportRepository customReportRepository;

    @Autowired
    public void setCustomReportRepository(CustomReportRepository customReportRepository){
        this.customReportRepository = customReportRepository;
    }

    @Override
    public Iterable<CustomReport> listAllCustomReports() {
        return customReportRepository.findAll();
    }

}

public interface CustomReportRepository extends CrudRepository<CustomReport, Long> {
}

2017-05-28 15:50:28.723 DEBUG 14708 --- [           main] o.s.b.d.LoggingFailure
AnalysisReporter   : Application failed to start due to an exception

org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.test.services.customreport.CustomReportService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1486) ~[spring-beans-4.3.8.RELEASE.jar!/:4.3.8.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1104) ~[spring-beans-4.3.8.RELEASE.jar!/:4.3.8.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066) ~[spring-beans-4.3.8.RELEASE.jar!/:4.3.8.RELEASE]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.java:659) ~[spring-beans-4.3.8.RELEASE.jar!/:4.3.8.RELEASE]
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) ~[spring-beans-4.3.8.RELEASE.jar!/:4.3.8.RELEASE]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366) ~[spring-beans-4.3.8.RELEASE.jar!/:4.3.8.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264) ~[spring-beans-4.3.8.RELEASE.jar!/:4.3.8.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553) ~[spring-beans-4.3.8.RELEASE.jar!/:4.3.8.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.8.RELEASE.jar!/:4.3.8.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.8.RELEASE.jar!/:4.3.8.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.8.RELEASE.jar!/:4.3.8.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.8.RELEASE.jar!/:4.3.8.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.8.RELEASE.jar!/:4.3.8.RELEASE]

    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) ~[spring-beans-4.3.8.RELEASE.jar!/:4.3.8.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866) ~[spring-context-4.3.8.RELEASE.jar!/:4.3.8.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) ~[spring-context-4.3.8.RELEASE.jar!/:4.3.8.RELEASE]
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.3.RELEASE.jar!/:1.5.3.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737) [spring-boot-1.5.3.RELEASE.jar!/:1.5.3.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:370) [spring-boot-1.5.3.RELEASE.jar!/:1.5.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:314) [spring-boot-1.5.3.RELEASE.jar!/:1.5.3.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162) [spring-boot-1.5.3.RELEASE.jar!/:1.5.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151) [spring-boot-1.5.3.RELEASE.jar!/:1.5.3.RELEASE]