spring - NoUniqueBeanDefinitionException : No qualifying bean of type [javax. persistence.EntityManagerFactory] ​​已定义:预期单个匹配 bean

Question

我有 2 个独立的数据库，我正在尝试在存储库中访问它们。不幸的是，我收到以下异常。

我尝试过的事情

• 已尝试将 其中一个 bean 设为 Primary。
• 已使用 PersistenceContext，如下面的代码所示。

我的异常追踪

Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'orderController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.crud.repository.mymerkNew.OrderRepository com.crud.controller.OrderController.nextGenorder; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'orderRepository': Injection of persistence dependencies failed; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [javax.persistence.EntityManagerFactory] is defined: expected single matching bean but found 2: mymerkLimsEntityManagerFactory,nextGenEntityManagerFactory
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1202)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:762)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
    at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:691)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:321)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:961)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:950)
    at com.mymerkbiotech.orange.crud.Application.main(Application.java:24)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.mymerkbiotech.orange.crud.repository.mymerkNew.OrderRepository com.mymerkbiotech.orange.crud.controller.OrderController.nextGenorder; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'orderRepository': Injection of persistence dependencies failed; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [javax.persistence.EntityManagerFactory] is defined: expected single matching bean but found 2: mymerkLimsEntityManagerFactory,nextGenEntityManagerFactory
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:561)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
    ... 16 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'orderRepository': Injection of persistence dependencies failed; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [javax.persistence.EntityManagerFactory] is defined: expected single matching bean but found 2: mymerkLimsEntityManagerFactory,nextGenEntityManagerFactory
    at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.postProcessPropertyValues(PersistenceAnnotationBeanPostProcessor.java:357)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1202)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1127)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1051)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:949)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:533)
    ... 18 more
Caused by: org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [javax.persistence.EntityManagerFactory] is defined: expected single matching bean but found 2: mymerkLimsEntityManagerFactory,nextGenEntityManagerFactory
    at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.findDefaultEntityManagerFactory(PersistenceAnnotationBeanPostProcessor.java:572)
    at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.findEntityManagerFactory(PersistenceAnnotationBeanPostProcessor.java:531)
    at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor$PersistenceElement.resolveEntityManager(PersistenceAnnotationBeanPostProcessor.java:697)
    at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor$PersistenceElement.getResourceToInject(PersistenceAnnotationBeanPostProcessor.java:670)
    at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:169)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
    at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.postProcessPropertyValues(PersistenceAnnotationBeanPostProcessor.java:354)
    ... 29 more

我的订单 Controller 就是 Autowiring 库

@RestController
@RequestMapping("/Order")
public class OrderController {

    @Autowired
    private OrderRepository nextGenorder;

我的订单仓库有

@Repository
public class OrderRepository extends AbstractRepository<Order> implements
        OrderRepositoryInterface {
    private static final String SELECT_QUERY = "select p from v_orders p";
    @PersistenceContext(name = "nextGenEntityManagerFactory")
    private EntityManager nextGenEntityManagerFactory;;

    public EntityManager getEntityManager() {
        return nextGenEntityManagerFactory;
    }

    public void setEntityManager(EntityManager entityManager) {
        this.nextGenEntityManagerFactory = entityManager;
    }

    public List<Order> selectAll() {
        javax.persistence.Query query = nextGenEntityManagerFactory
                .createQuery(SELECT_QUERY);
        List<Order> order = query.getResultList();
        return order;
    }

我的 FirstConfig 文件

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(basePackages = "xx.xx.xx.crud.repository.running", entityManagerFactoryRef = "nextGenEntityManagerFactory", transactionManagerRef = "transactionManagerOne")
@PropertySource("classpath:application.properties")
public class NextGenDbConfig {

    @Value("${spring.datasourcemymerkNew.driver-class-name}")
    String driverClassName = "";
    @Value("${spring.datasourcemymerkNew.url}")
    String url = "";
    @Value("${spring.datasourcemymerkNew.username}")
    String userName = "";
    @Value("${spring.datasourcemymerkNew.password}")
    String password = "";
    @Autowired
    @Qualifier("jpaNextGenVendorApapter")
    JpaVendorAdapter jpaNextGenVendorApapter;

    @Bean(name = "nextGenDataSource")
    @Primary
    public DataSource nextGenDataSource() {
        return DataSourceBuilder.create().url(url)
                .driverClassName(driverClassName).username(userName)
                .password(password).build();
    }

    @Bean
    @Primary
    public LocalContainerEntityManagerFactoryBean nextGenEntityManagerFactory() {
        LocalContainerEntityManagerFactoryBean factoryBean = new LocalContainerEntityManagerFactoryBean();

        factoryBean.setDataSource(nextGenDataSource());
        factoryBean.setJpaVendorAdapter(jpaNextGenVendorApapter);
        factoryBean.setPackagesToScan(R.nextGenDB_PACKAGE);
        factoryBean.setPersistenceUnitName("nextGenPersistenceUnit");
        factoryBean.setJpaProperties(additionalProperties());

        return factoryBean;
    }

    @Bean
    PlatformTransactionManager transactionManagerOne() {
        return new JpaTransactionManager(nextGenEntityManagerFactory()
                .getObject());
    }

    @Bean(name = "jpaNextGenVendorApapter")
    @Primary
    public JpaVendorAdapter jpaNextGenVendorAdapter() {
        HibernateJpaVendorAdapter jpaNextGenVendorAdapter = new HibernateJpaVendorAdapter();
        jpaNextGenVendorAdapter.setShowSql(true);
        jpaNextGenVendorAdapter.setGenerateDdl(true);
        jpaNextGenVendorAdapter.setDatabase(Database.MYSQL);
        return jpaNextGenVendorAdapter;
    }

    Properties additionalProperties() {
        Properties properties = new Properties();
        properties.setProperty("hibernate.hbm2ddl.auto", "create-drop");
        properties.setProperty("hibernate.dialect",
                "org.hibernate.dialect.MySQL5Dialect");
        return properties;
    }

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

}

和第二个配置

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(basePackages = "com.mymerkbiotech.orange.crud.repository.running", entityManagerFactoryRef = "mymerkLimsEntityManagerFactory", transactionManagerRef = "transactionManagertwo")
@PropertySource("classpath:application.properties")
public class mymerkDbConfig {

    @Value("${spring.datasourcemymerkLims.driver-class-name}")
    String driverClassName = "";
    @Value("${spring.datasourcemymerkLims.url}")
    String url = "";
    @Value("${spring.datasourcemymerkLims.username}")
    String userName = "";
    @Value("${spring.datasourcemymerkLims.password}")
    String password = "";
    @Autowired
    @Qualifier("jpamymerkVendorAdapter")
    JpaVendorAdapter mymerkVendorAdapter;

    @Bean(name = "mymerklimsDataSource")
    public DataSource mymerklimsDataSource() {
        return DataSourceBuilder.create().url(url)
                .driverClassName(driverClassName).username(userName)
                .password(password).build();
    }

    @Bean
    public LocalContainerEntityManagerFactoryBean mymerkLimsEntityManagerFactory() {
        LocalContainerEntityManagerFactoryBean factoryBean = new LocalContainerEntityManagerFactoryBean();

        factoryBean.setDataSource(mymerklimsDataSource());

        factoryBean.setJpaVendorAdapter(mymerkVendorAdapter);
        factoryBean.setPackagesToScan(R.mymerkDB_PACKAGE);
        factoryBean.setPersistenceUnitName("mymerklimsPersistenceUnit");
        factoryBean.afterPropertiesSet();

        return factoryBean;
    }

    @Bean
    PlatformTransactionManager transactionManagerTwo() {
        return new JpaTransactionManager(mymerkLimsEntityManagerFactory()
                .getObject());
    }

    @Bean(name = "jpamymerkVendorAdapter")
    public JpaVendorAdapter jpamymerkVendorAdapter() {
        HibernateJpaVendorAdapter jpaVendorAdapter = new HibernateJpaVendorAdapter();
        jpaVendorAdapter.setShowSql(true);
        jpaVendorAdapter.setGenerateDdl(true);
        jpaVendorAdapter.setDatabase(Database.MYSQL);
        return jpaVendorAdapter;
    }

    Properties additionalProperties() {
        Properties properties = new Properties();
        properties.setProperty("hibernate.hbm2ddl.auto", "create-drop");
        properties.setProperty("hibernate.dialect",
                "org.hibernate.dialect.MySQL5Dialect");
        return properties;
    }

}

我尝试在 PersistenceAnnotationBeanPostProcessor 中进行调试，但很快就丢失了。

Answer 1

我认为您应该在两种配置中命名您的 LocalContainerEntityManagerFactoryBean。所以它应该是这样的:

@Bean(name = "nextGenEntityManagerFactory")
@Primary
public LocalContainerEntityManagerFactoryBean nextGenEntityManagerFactory() {

对于第一个和

@Bean(name = "gatcLimsEntityManagerFactory") 
public LocalContainerEntityManagerFactoryBean gatcLimsEntityManagerFactory() {

第二次。