我正在尝试使用 Spring JavaConfig 让我的 spring-application xml-free。
现在我在请求网页时遇到以下错误：
org.springframework.beans.factory.NoSuchBeanDefinitionException: No unique bean of type [javax.persistence.EntityManagerFactory] is defined: expected single bean but found 0
at org.springframework.beans.factory.BeanFactoryUtils.beanOfType(BeanFactoryUtils.java:394)
at org.springframework.orm.jpa.EntityManagerFactoryUtils.findEntityManagerFactory(EntityManagerFactoryUtils.java:111)
at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.lookupEntityManagerFactory(OpenEntityManagerInViewFilter.java:229)
at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.lookupEntityManagerFactory(OpenEntityManagerInViewFilter.java:205)
at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:152)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
我的持久性配置：
@Configuration
@EnableTransactionManagement
public class PersistenceConfig implements TransactionManagementConfigurer
{
@Bean(name = "dataSource")
public DataSource dataSource()
{
try
{
return (DataSource) new JndiTemplate().lookup("java:comp/env/jdbc/my-db");
}
catch (NamingException e)
{
throw new ApplicationConfigurationException("db-context not found", e);
}
}
@Bean(name = "entityManagerFactory")
public EntityManagerFactory entityManagerFactory()
{
LocalContainerEntityManagerFactoryBean lcemfb = new LocalContainerEntityManagerFactoryBean();
lcemfb.setDataSource(dataSource());
lcemfb.setJpaDialect(new HibernateJpaDialect());
lcemfb.setJpaVendorAdapter(jpaVendorAdapter());
lcemfb.setPersistenceUnitName("persistenceUnit");
lcemfb.setPersistenceXmlLocation("classpath:META-INF/persistence.xml");
lcemfb.afterPropertiesSet();
return lcemfb.getObject();
}
@Bean(name = "jpaVendorAdapter")
public JpaVendorAdapter jpaVendorAdapter()
{
HibernateJpaVendorAdapter jpaVendorAdapter = new HibernateJpaVendorAdapter();
jpaVendorAdapter.setShowSql(true);
jpaVendorAdapter.setDatabase(Database.ORACLE);
jpaVendorAdapter.setDatabasePlatform(Oracle10gDialect.class.getName());
jpaVendorAdapter.setGenerateDdl(false);
return jpaVendorAdapter;
}
/**
* @see org.springframework.transaction.annotation.TransactionManagementConfigurer#annotationDrivenTransactionManager()
*/
@Bean(name = "transactionManager")
public PlatformTransactionManager annotationDrivenTransactionManager()
{
JpaTransactionManager jpaTransactionManager = new JpaTransactionManager();
jpaTransactionManager.setEntityManagerFactory(entityManagerFactory());
return jpaTransactionManager;
}
}
到目前为止，应用程序中的数据库访问工作正常。
有什么提示吗？