spring 无法创建 [org.springframework.orm.jpa.SharedEntityManagerCreator] 类型的内部 bean '(inner bean)'？

Cannot create inner bean '(inner bean)' of type [org.springframework.orm.jpa.SharedEntityManagerCreator]?

提问by Balu

I have used the Java based configurations. When I use the jpa repositories I get the can not create inner bean exception of type shared entity manger creator.

我使用了基于 Java 的配置。当我使用 jpa 存储库时，我得到了can not create inner bean exception of type shared entity manger creator.

Spring contex config:

Spring上下文配置：

@Configuration
@ComponentScan(basePackages = { "com.sample.proj.controller" })
@EnableWebMvc
@EnableTransactionManagement
@EnableJpaRepositories("com.sample.proj.domain")
@PropertySource("classpath:application.properties")
public class ServletContextConfig {

    private static final String PROPERTY_NAME_DATABASE_DRIVER = "db.driver";
    private static final String PROPERTY_NAME_DATABASE_URL = "db.url";
    private static final String PROPERTY_NAME_DATABASE_USERNAME = "db.username";
    private static final String PROPERTY_NAME_DATABASE_PASSWORD = "db.password";
    private static final String PROPERTY_NAME_HIBERNATE_DIALECT = "hibernate.dialect";
    private static final String PROPERTY_NAME_HIBERNATE_FORMAT_SQL = "hibernate.format_sql";
    private static final String PROPERTY_NAME_HIBERNATE_NAMING_STRATEGY = "hibernate.ejb.naming_strategy";
    private static final String PROPERTY_NAME_HIBERNATE_SHOW_SQL = "hibernate.show_sql";
    private static final String PROPERTY_NAME_HIBERNATE_HBN2DDL_SQL = "hibernate.hbm2ddl.auto";

    @Resource
    private Environment environment;

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

        dataSource.setDriverClassName(environment
                .getRequiredProperty(PROPERTY_NAME_DATABASE_DRIVER));
        dataSource.setUrl(environment
                .getRequiredProperty(PROPERTY_NAME_DATABASE_URL));
        dataSource.setUsername(environment
                .getRequiredProperty(PROPERTY_NAME_DATABASE_USERNAME));
        dataSource.setPassword(environment
                .getRequiredProperty(PROPERTY_NAME_DATABASE_PASSWORD));

        return dataSource;
    }

    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactoryBean()
            throws Exception {
        LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
        entityManagerFactoryBean.setDataSource(dataSource());
        entityManagerFactoryBean
                .setPackagesToScan(new String[] { "com.sample.proj.domain" });
        entityManagerFactoryBean
                .setPersistenceProviderClass(HibernatePersistence.class);

        Properties jproperties = new Properties();
        jproperties.put("hibernate.dialect", environment
                .getRequiredProperty(PROPERTY_NAME_HIBERNATE_DIALECT));
        jproperties.put("hibernate.format_sql", environment
                .getRequiredProperty(PROPERTY_NAME_HIBERNATE_FORMAT_SQL));
        jproperties.put("hibernate.ejb.naming_strategy", environment
                .getRequiredProperty(PROPERTY_NAME_HIBERNATE_NAMING_STRATEGY));
        jproperties.put("hibernate.show_sql", environment
                .getRequiredProperty(PROPERTY_NAME_HIBERNATE_SHOW_SQL));
        jproperties.put("hibernate.hbm2ddl.auto", environment
                .getRequiredProperty(PROPERTY_NAME_HIBERNATE_HBN2DDL_SQL));
        JpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        entityManagerFactoryBean.setJpaVendorAdapter(vendorAdapter);
        entityManagerFactoryBean.setJpaProperties(jproperties);
        return entityManagerFactoryBean;
    }

}

Webintializer:

网络初始化器：

@Override
public void onStartup(ServletContext container) {
        // Create the 'root' Spring application context
        AnnotationConfigWebApplicationContext rootContext = new AnnotationConfigWebApplicationContext();
        rootContext.register(ServletContextConfig.class);

        // Manage the lifecycle of the root application context
        container.addListener(new ContextLoaderListener(rootContext));

        // Create the dispatcher servlet's Spring application context
        AnnotationConfigWebApplicationContext dispatcherContext = new AnnotationConfigWebApplicationContext();
        dispatcherContext.register(ServletContextConfig.class);

        // Register and map the dispatcher servlet
        ServletRegistration.Dynamic dispatcher = container.addServlet(
                "dispatcher", new DispatcherServlet(dispatcherContext));
        dispatcher.setLoadOnStartup(1);
        dispatcher.addMapping("/");
}

Repository:

存储库：

    public interface PersonRepository extends JpaRepository<Person, String> {

    }

Service class:

服务等级：

    @Service
    @Transactional
    public class PersonService {

        @Autowired
        PersonRepository personRepository;

        public Person saveDetails(Person person) {
            // System.out.println("Service Class:Person Name:"+
            // person.getPersonName());
            System.out.println("Executed");
            return person;
        }

    }

Controller class:

控制器类：

    @RequestMapping(value = "/addPerson", method = RequestMethod.POST)
        public String addperson(@RequestParam("personName") String name,
                @RequestParam("personAddress") String address, Model model) {
            System.out.println("Name:" + name);
            System.out.println("Address:" + address);
            Person person = new Person();
            person.setPersonId(1);
            person.setPersonName(name);
            person.setPersonAddress(address);
            personService.saveDetails(person);
            model.addAttribute("result", "Your record inserted successfully");

            return HOME_VIEW;
        }

Domain class:

域类：

@Entity
@Table(name = "PERSON")
public class Person implements Serializable {

    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    @Id
    private Integer personId;
    private String personName;
    private String personAddress;

    //getters and setters... 

}

The exception stacktrace is as below:

异常堆栈跟踪如下：

SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
        org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'personRepository': Cannot create inner bean '(inner bean)' of type [org.springframework.orm.jpa.SharedEntityManagerCreator] while setting bean property 'entityManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#1': Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'entityManagerFactory' is defined
            at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:282)
            at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:126)
            at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1391)
            at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1132)
            at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:522)
            at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461)
            at org.springframework.beans.factory.support.AbstractBeanFactory.getObject(AbstractBeanFactory.java:295)
            at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
            at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
            at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
            at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:589)
            at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
            at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
            at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:383)
            at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283)
            at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112)
            at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791)
            at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285)
            at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
            at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
            at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
            at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:618)
            at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:650)
            at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1582)
            at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
            at java.util.concurrent.FutureTask.run(FutureTask.java:262)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
            at java.lang.Thread.run(Thread.java:744)

回答by Anuj Patel

First of all if you look closely at your exception trace you'll see that ContextLoaderListneris actually complaining about No bean named 'entityManagerFactory' is definedas the root cause for not being able to create personRepository.

首先，如果您仔细查看异常跟踪，您会发现 ContextLoaderListner实际上抱怨No bean named 'entityManagerFactory' is defined是无法创建personRepository.

As I dont know what exact project structure is, You can try putting bean name with LocalContainerEntityManagerFactoryBeanso that Spring can find and inject it.

由于我不知道确切的项目结构是什么，您可以尝试将 bean 名称放在 withLocalContainerEntityManagerFactoryBean以便 Spring 可以找到并注入它。

i.e. Something like this :

即这样的事情：

@Bean(name = "entityManagerFactoryBean")
public LocalContainerEntityManagerFactoryBean ...

回答by Balu

Finally, I got this solution. I made this changes in the configuration file.

最后，我得到了这个解决方案。我在配置文件中进行了此更改。

It executes successfully.

它执行成功。

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(basePackages = { "com.sample.proj.repo" })
@PropertySource("classpath:application.properties")
public class JpaConfig {

    private static final String PROPERTY_NAME_DATABASE_DRIVER = "db.driver";
    private static final String PROPERTY_NAME_DATABASE_URL = "db.url";
    private static final String PROPERTY_NAME_DATABASE_USERNAME = "db.username";
    private static final String PROPERTY_NAME_DATABASE_PASSWORD = "db.password";

    @Resource
    private Environment environment;

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

        dataSource.setDriverClassName(environment
                .getRequiredProperty(PROPERTY_NAME_DATABASE_DRIVER));
        dataSource.setUrl(environment
                .getRequiredProperty(PROPERTY_NAME_DATABASE_URL));
        dataSource.setUsername(environment
                .getRequiredProperty(PROPERTY_NAME_DATABASE_USERNAME));
        dataSource.setPassword(environment
                .getRequiredProperty(PROPERTY_NAME_DATABASE_PASSWORD));

        return dataSource;
    }

    @Bean
    public PlatformTransactionManager transactionManager() {
        EntityManagerFactory factory = entityManagerFactory();
        return new JpaTransactionManager(factory);
    }

    @Bean
    public EntityManagerFactory entityManagerFactory() {
        HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        vendorAdapter.setGenerateDdl(Boolean.TRUE);
        vendorAdapter.setShowSql(Boolean.TRUE);
        LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
        factory.setJpaVendorAdapter(vendorAdapter);
        factory.setPackagesToScan("com.sample.proj.domain");
        factory.setDataSource(dataSource());
        factory.afterPropertiesSet();
        factory.setLoadTimeWeaver(new InstrumentationLoadTimeWeaver());
        return factory.getObject();
    }

    @Bean
    public HibernateExceptionTranslator hibernateExceptionTranslator() {
        return new HibernateExceptionTranslator();
    }

回答by malvadao

Using the

使用

@EnableJpaRepositories("some.package.ref.other.than.default")

@EnableJpaRepositories("some.package.ref.other.than.default")

in main Application.java file did the trick for me.

在主 Application.java 文件中对我有用。

I have most of my files located in package

我的大部分文件都位于包中

com.example.cortifero

com.example.cortifero

Therefore, I have written my code as such (Application.java):

因此，我写了这样的代码（Application.java）：

@EnableJpaRepositories(basePackages="com.example.cortifero.jpa.service") //notice this line
@SpringBootApplication
public class Application {

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