我有两个独立的数据库，我试图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
我的ExceptionTrace
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$InjectedElement.inject(InjectionMetadata.java:169)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.postProcessPropertyValues(PersistenceAnnotationBeanPostProcessor.java:354)
... 29 more
我的订单控制器，它只是自动装配存储库
@RestController
@RequestMapping("/Order")
public class OrderController {
@Autowired
private OrderRepository nextGenorder;
我的订单存储库有
@Repository
public class OrderRepository extends AbstractRepository<Order> implements
OrderRepositoryInterface {
private static final String SELECT_QUERY = "select p from v_orders p";
@PersistenceContext(name = "nextGenEntityManagerFactory")
private EntityManager nextGenEntityManagerFactory;;
public EntityManager getEntityManager() {
return nextGenEntityManagerFactory;
}
public void setEntityManager(EntityManager entityManager) {
this.nextGenEntityManagerFactory = entityManager;
}
public List<Order> selectAll() {
javax.persistence.Query query = nextGenEntityManagerFactory
.createQuery(SELECT_QUERY);
List<Order> order = query.getResultList();
return order;
}
我的FirstConfig文件
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(basePackages = "xx.xx.xx.crud.repository.running", entityManagerFactoryRef = "nextGenEntityManagerFactory", transactionManagerRef = "transactionManagerOne")
@PropertySource("classpath:application.properties")
public class NextGenDbConfig {
@Value("${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();
}
}
和第二次配置
@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。
答案 0 :(得分：12)
我认为你应该在两种配置中命名你的LocalContainerEntityManagerFactoryBean。所以看起来应该是这样的：
@Bean(name = "nextGenEntityManagerFactory")
@Primary
public LocalContainerEntityManagerFactoryBean nextGenEntityManagerFactory() {
表示第一个和
@Bean(name = "gatcLimsEntityManagerFactory")
public LocalContainerEntityManagerFactoryBean gatcLimsEntityManagerFactory() {
第二个。
答案 1 :(得分：0)
也可以通过排除JPA自动配置来解决此异常。通常，当有两个实体管理器时，无论如何都要手动进行配置，因此没有必要依赖自动配置。
DataSourceAutoconfiguration应该排除在外，所有从JpaBaseConfiguration继承的东西
@EnableAutoConfiguration(exclude = {DataSourceAutoConfiguration.class, HibernateJpaAutoConfiguration}
public class MySpringApp() {}
或
@SpringBootAutoconfiguration(exclude = {DataSourceAutoConfiguration.class, HibernateJpaAutoConfiguration)
public class MySpringApp() {}