自动接线错误弹簧

Question

I am new to spring. Previous I have used to configure the auto wiring using spring- context xml. Now my project we are using annotation directly to inject the bean.

I am getting following exception when I try to auto wire Mongo repository.

Below is the sample code.

StagingDocumentServiceImpl:

@Service
public class StagingDocumentServiceImpl implements StagingDocumentService {

private static final Logger logger = Logger.getLogger(StagingDocumentServiceImpl.class);
@Autowired
private StagingDocumentRepository stagingDocumentRepository;

/**
 * 
 */
@Override
@Transactional(readOnly = false)
public List<String> saveRawData(Tuple twitter) {

    List<String> tweetIDs = new ArrayList<String>();
    System.out.println("Twitter information get passed.." + twitter);
    Status tweets = (Status) twitter
            .getValueByField(TopologyConstants.TWEETSPOUT_OUT_FIELD);
    //try{
    CIPPayload twitterPayload = DataCaptureTwitterUtil
            .getrawJSONPayloadFromTwitterResponse(tweets);
    String parentID = null;
    System.out.println("twitterPayload"+twitterPayload);
    String tweetParentId = twitterPayload.getContent().getParentContentId();
    /*if (StringUtils.isNotBlank(tweetParentId)) {
        DBObject queryObject = new BasicDBObject();
        queryObject.put("content.id", tweetParentId);
        DBObject resultedData = stagingDocumentRepository.fi
        if (resultedData == null) {
            parentID = getOriginalTweet(tweetParentId);
            tweetIDs.add(parentID);
        }

    }*/

    Test test = stagingDocumentRepository.save(twitterPayload);

    System.out.println("test-->"+test);


    return tweetIDs;
}

StagingDocumentRepository:

 public interface StagingDocumentRepository extends
  MongoRepository<CIPPayload, Serializable> {

 }

The problem is I do know how to configure using @bean annotation.

I have tried to configure like below.

After all below answer I have changed the configuartion as below.

But changing this also does not work.

@Configuration
public class AppConfig {
    @Bean
    @Bean
    public StagingDocumentRepository stagingDocumentRepository(){
        return new StagingDocumentRepository() {

            @Override
            public <S extends CIPPayload> S save(S entity) {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public CIPPayload findOne(Serializable id) {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public Iterable<CIPPayload> findAll(Iterable<Serializable> ids) {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public boolean exists(Serializable id) {
                // TODO Auto-generated method stub
                return false;
            }

            @Override
            public void deleteAll() {
                // TODO Auto-generated method stub

            }

            @Override
            public void delete(Iterable<? extends CIPPayload> entities) {
                // TODO Auto-generated method stub

            }

            @Override
            public void delete(CIPPayload entity) {
                // TODO Auto-generated method stub

            }

            @Override
            public void delete(Serializable id) {
                // TODO Auto-generated method stub

            }

            @Override
            public long count() {
                // TODO Auto-generated method stub
                return 0;
            }

            @Override
            public Page<CIPPayload> findAll(Pageable pageable) {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public <S extends CIPPayload> List<S> save(Iterable<S> entites) {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public List<CIPPayload> findAll(Sort sort) {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public List<CIPPayload> findAll() {
                // TODO Auto-generated method stub
                return null;
            }
        };
}

Output:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'stagingDocumentServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.biomorf.cip.datacapture.repository.payload.StagingDocumentRepository com.biomorf.cip.datacapture.processing.serviceImpl.StagingDocumentServiceImpl.stagingDocumentRepository; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.biomorf.cip.datacapture.repository.payload.StagingDocumentRepository] 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.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:292) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760) ~[spring-context-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482) ~[spring-context-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:691) [spring-boot-1.1.4.RELEASE.jar:1.1.4.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:320) [spring-boot-1.1.4.RELEASE.jar:1.1.4.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:952) [spring-boot-1.1.4.RELEASE.jar:1.1.4.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:941) [spring-boot-1.1.4.RELEASE.jar:1.1.4.RELEASE]
    at com.biomorf.cip.datacapture.Application.main(Application.java:32) [classes/:na]
       Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.biomorf.cip.datacapture.repository.payload.StagingDocumentRepository com.biomorf.cip.datacapture.processing.serviceImpl.StagingDocumentServiceImpl.stagingDocumentRepository; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.biomorf.cip.datacapture.repository.payload.StagingDocumentRepository] 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.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:508) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:289) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    ... 15 common frames omitted
       Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.biomorf.cip.datacapture.repository.payload.StagingDocumentRepository] 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) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:963) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:858) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:480) ~[spring-beans-4.0.6.RELEASE.jar:4.0.6.RELEASE]

Answer 1

should be like this:

@Respository
public interface StagingDocumentRepository extends
MongoRepository<CIPPayload, Serializable> {

}

and then :

@Configuration
@EnableMongoRepositories
public class ThisIsAnAppConfigClass{

   @Bean 
   public StagingDocumentRepository stagingDocumentRepository(){
      return new StagingDocumentRepository();
   }

}

Answer 2

try defining this in your spring config.xml file

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans    http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.0.xsd">

<bean class="path.to.your.stagingdocumentrepository" id="StagingDocumentRepository" />

</beans>

equivalent without xml is like this:

@Configuration
public class ThisIsAnAppConfigClass{

   @Bean 
   public StagingDocumentRepository stagingDocumentRepository(){
      return new StagingDocumentRepository();
   }
}

Answer 3

The error message

No qualifying bean of type [com.biomorf.cip.datacapture.repository.payload.StagingDocumentRepository] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency.

tells you that spring found no StagingDocumentRepository bean that can be injected in your StagingDocumentServiceImpl .

You should make sure you define a StagingDocumentRepository bean. To do so you can use various ways.

• use xml configuration like Arno_Geismar showed in his answer
• use component scan feature and annotate StagingDocumentRepository with a scanned annotation (eg @Repository ).
• use Java config to define the bean (like shown below)

Java config:

@Bean
public StagingDocumentRepository stagingDocumentRepository() {
  return new StagingDocumentRepository(..);
}

Answer 4

Your problem is that it returns a null value.

@Bean
@Qualifier("stagingDocumentRepository")
public StagingDocumentRepository stagingDocumentRepository() {
  return new StagingDocumentRepository(..);
}

Answer 5

尝试使用 @repository 或 @EnableMongoRepositories

Answer 6

You need to understand that when using Spring Data, the implementation of the repository specified is provided by Spring Data. You should not provide any such implementation.

In your case the implementation of StagingDocumentRepository would be provided by Spring Data if you have configured Spring Data correctly.

The fact that Spring reports that no bean of type StagingDocumentRepository exists, means that you have not setup Spring Data Mongo correctly.

Your Java config would look like this:

@Configuration
@EnableMongoRepositories("package.under.which.repositories.reside")
public class YourConfig {

    //whatever beans you need
}

Your repository does not need to contain any extra annotation to be picked up by Spring Data. It would just be:

public interface StagingDocumentRepository extends
  MongoRepository<CIPPayload, Serializable> {

}