创建通过字段 sessionFactory 表示的 bean 不满足的依赖项时出错

Question

我遇到错误，它说SECU 表中不存在列。但问题是我真的不需要这个表中的这个列，因为我只需要NONSECU 表中的这个列，它只在NONSECU 类中引用。

有没有办法在 getbean 方法或其他地方摆脱这个？

`[main] WARN  org.springframework.context.annotation.AnnotationConfigApplicationContext - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'IsmaImp': Unsatisfied dependency expressed through field 'sessionFactory': Error creating bean with name 'sessionFactory' defined in baag.betl.dbimporter.esmatrans.SpringConfiguration: Invocation of init method failed; nested exception is org.hibernate.tool.schema.spi.SchemaManagementException: Schema-validation: missing column [preTradLrgInScaleThrshld] in table [SECU]; nested exception is org.springframework.beans.factory.BeanCreationException: 

@配置 @ComponentScan("baag.betl.dbimporter.Ismatr") @EnableTransactionManagement 公共类 SpringConfiguration {

@Autowired
private Environment env;

@Bean
public DataSource dataSource() {
    return createDatasource("dwh.");
}

private DriverManagerDataSource createDatasource(String propertyPrefix) {
    DriverManagerDataSource dataSource = new DriverManagerDataSource();
    dataSource.setDriverClassName(env.getRequiredProperty(propertyPrefix + "driver"));
    dataSource.setUrl(env.getRequiredProperty(propertyPrefix + "jdbc"));
    dataSource.setUsername(env.getRequiredProperty(propertyPrefix + "user"));
    dataSource.setPassword(env.getRequiredProperty(propertyPrefix + "pwd"));
    return dataSource;
}

@Bean
public Properties hibernateProperties() {
    Properties properties = new Properties();
    properties.put(AvailableSettings.DIALECT, env.getRequiredProperty("hibernate.dialect"));
    properties.put(AvailableSettings.SHOW_SQL, env.getRequiredProperty("hibernate.show_sql"));
    properties.put(AvailableSettings.STATEMENT_BATCH_SIZE, env.getRequiredProperty("hibernate.batch.size"));
    properties.put(AvailableSettings.HBM2DDL_AUTO, env.getRequiredProperty("hibernate.hbm2ddl.auto"));
    properties.put(AvailableSettings.CURRENT_SESSION_CONTEXT_CLASS, env.getRequiredProperty("hibernate.current.session.context.class"));
    return properties;
}

@Bean
public LocalSessionFactoryBean sessionFactory(DataSource dataSource) {
    LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
    sessionFactory.setDataSource(dataSource);
    sessionFactory.setAnnotatedClasses(Secu.class, NonSecu.class);
    sessionFactory.setHibernateProperties(hibernateProperties());
    return sessionFactory;
}

@Bean
public HibernateTransactionManager transactionManager(SessionFactory sessionFactory) {
    HibernateTransactionManager txManager = new HibernateTransactionManager();
    txManager.setSessionFactory(sessionFactory);
    return txManager;
}

}

Answer 1

如果您想忽略某些字段的列映射，只需将它们声明为 Transient

像这样：

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

    @Transient
    protected BigDecimal preTradLrgInScaleThrshld;

此字段不会持久存在，并且在加载后始终具有空值。