Отсутствие подходящего компонента типа, найденного для зависимости

Question

Я пытаюсь написать основной проект весны. Однако у меня есть большая проблема с использованием `@Autowired через службу. Я не нашел проблему и получил ошибку ниже:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'testeRS': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: br.com.lazycat.service.TesteServiceImpl br.com.lazycat.endpoint.TesteRS.testeService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [br.com.lazycat.service.TesteServiceImpl] 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) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475) 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304) 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703) 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760) 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482) 
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658) 
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:624) 
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:672) 
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:543) 
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484) 
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) 
    at javax.servlet.GenericServlet.init(GenericServlet.java:158) 
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1241) 
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1154) 
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1041) 
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4969) 
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5255) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398) 
    at java.util.concurrent.FutureTask.run(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
    at java.lang.Thread.run(Unknown Source) 
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: br.com.lazycat.service.TesteServiceImpl br.com.lazycat.endpoint.TesteRS.testeService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [br.com.lazycat.service.TesteServiceImpl] 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$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:508) 
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:289) 
    ... 29 more 
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [br.com.lazycat.service.TesteServiceImpl] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1103) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:963) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:858) 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:480) 
    ... 31 more 

mar 05, 2015 11:23:09 PM org.apache.catalina.core.StandardContext loadOnStartup 
GRAVE: Servlet /lazycat threw load() exception 
org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [br.com.lazycat.service.TesteServiceImpl] 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) 
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87) 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:289) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1185) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475) 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:304) 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:703) 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760) 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482) 
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:658) 
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:624) 
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:672) 
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:543) 
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:484) 
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) 
    at javax.servlet.GenericServlet.init(GenericServlet.java:158) 
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1241) 
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1154) 
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1041) 
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4969) 
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5255) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398) 
    at java.util.concurrent.FutureTask.run(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
    at java.lang.Thread.run(Unknown Source) 

Мои AppConfig:

package br.com.lazycat.config; 

import java.util.Properties; 

@Configuration 
@EnableTransactionManagement 
@EnableJpaRepositories(basePackages={"br.com.lazycat.repository"}) 
@ComponentScan({"br.com.lazycat.endpoint", "br.com.lazycat.config", "br.com.lazycat.service", "br.com.lazycat.model", "br.com.lazycat.repository"}) 

public class AppConfig { 

    private static final String DATABASE_DRIVER = "org.postgresql.Driver"; 
    private static final String DATABASE_URL = "jdbc:postgresql://localhost:5432/postgres"; 
    private static final String DATABASE_USERNAME = "postgres"; 
    private static final String DATABASE_PASSWORD = "123qwe"; 

    private static final String HIBERNATE_DIALECT = "org.hibernate.dialect.PostgreSQLDialect"; 
    private static final String HIBERNATE_SHOW_SQL = "true"; 
    private static final String ENTITYMANAGER_PACKAGES_TO_SCAN = "br.com.lazycat.model"; 

    public static final String USER_CACHE = "userRestCache"; 

    @Bean 
    public DataSource dataSource() { 
     DriverManagerDataSource dataSource = new DriverManagerDataSource(); 

     dataSource.setDriverClassName(DATABASE_DRIVER); 
     dataSource.setUrl(DATABASE_URL); 
     dataSource.setUsername(DATABASE_USERNAME); 
     dataSource.setPassword(DATABASE_PASSWORD); 

     return dataSource; 
    } 

    @Bean 
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() { 

     HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter(); 
     vendorAdapter.setDatabase(Database.POSTGRESQL); 
     vendorAdapter.setGenerateDdl(true); 
     vendorAdapter.setShowSql(true); 

     LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean(); 
     factory.setJpaVendorAdapter(vendorAdapter); 
     factory.setDataSource(dataSource()); 
     factory.setPackagesToScan(ENTITYMANAGER_PACKAGES_TO_SCAN); 

     return factory; 
    } 

    @Bean 
    public LocalSessionFactoryBean sessionFactory() { 
     LocalSessionFactoryBean sessionFactoryBean = new LocalSessionFactoryBean(); 
     sessionFactoryBean.setDataSource(dataSource()); 
     sessionFactoryBean.setPackagesToScan(ENTITYMANAGER_PACKAGES_TO_SCAN); 
     sessionFactoryBean.setHibernateProperties(hibProperties()); 
     return sessionFactoryBean; 
    } 

    private Properties hibProperties() { 
     Properties properties = new Properties(); 
     properties.put("hibernate.dialect", HIBERNATE_DIALECT); 
     properties.put("hibernate.show_sql", HIBERNATE_SHOW_SQL); 
     return properties; 
    } 

    @Bean 
    public PlatformTransactionManager transactionManager() { 
     JpaTransactionManager transactionManager = new JpaTransactionManager(); 
      transactionManager.setEntityManagerFactory(
      entityManagerFactory().getObject()); 
      return transactionManager; 
     /*HibernateTransactionManager transactionManager = new HibernateTransactionManager(); 
     transactionManager.setSessionFactory(sessionFactory().getObject()); 
     return transactionManager;*/ 
    } 
} 

RestController:

@RestController 
@RequestMapping(value = "/teste", produces = "application/json") 
public class TesteRS { 

    @Autowired 
    TesteServiceImpl testeService; 

    @RequestMapping(method=RequestMethod.POST, value="/piroca/{nome}") 
    private void testPut(@PathVariable("nome") String nome) { 
     testeService.save(nome); 
    } 
} 

Service - Интерфейс

public interface TesteService { 

    public void save(String nome); 

} 

Service

@Service("testeService") 
@Transactional 
public class TesteServiceImpl implements TesteService { 

    @Autowired 
    TesteRepository testeRepository; 

    public void save(String nome) { 
     Teste tst = new Teste(); 
     tst.setName(nome); 
     System.out.println(tst); 
     testeRepository.save(tst); 
    } 
} 

Repository

@Repository 
public interface TesteRepository extends JpaRepository<Teste, Integer>{ 

} 

Я ценю вашу помощь. Благодаря!

Answer 1

1. Удалить квалификатор от @Service. Измените @Service("testeService") на просто @Service.
2. Не вводите непосредственно TesteServiceImpl. Изменить @Autowired TesteServiceImpl testeService на @Autowired TesteService testeService.

@Service(<name>) присвоило <name> экземпляру bean, созданному Spring. Это не обязательно, если у вас нет нескольких реализаций компонента. Например, если у вас:

interface UserRepository {} 
class UserLdapRepository implements UserRepository {} 
class UserSamlRepository implements UserRepository {} 

вы бы два компонента в компоненте реестра Spring, которые реализуют UserRepository. Тогда, если вы хотите @Autowired UserRepository userRepository, будет неопределенность, в которой реализация UserRepository должна быть автообновлена. Именно в этой ситуации было бы полезно использовать @Service(<name>).

Когда ваш класс реализует интерфейс, лучше вводить интерфейс вместо класса. Это становится обязательным, если Spring AOP используется с его конфигурацией по умолчанию. В вашем случае @EnableTransactionManagement запускает AOP, который в своей конфигурации по умолчанию создает интерфейсные прокси. Следовательно, создается прокси-сервер TesteService (а не TesteServiceImpl). Итак, Spring справедливо жалуется на то, что при попытке вставить его не будет никакого экземпляра TesteServiceImpl.

Answer 2

Попробуйте это в своем контроллере. Обычно вы используете autwire для вашего типа интерфейса, а не для impl.

public class TesteRS { 

    @Autowired 
    @Qualifier("testeService") 
    TesteService testeService;