Spring,Spring数据JPA:org.hibernate.hql.internal.ast.QuerySyntaxException:测试未映射
当我在Spring数据JPA Reposiotry中创建一个使用注释的方法时,我得到了一个Spring,Spring数据JPA:org.hibernate.hql.internal.ast.QuerySyntaxException:测试未映射,spring,hibernate,spring-data,spring-data-jpa,Spring,Hibernate,Spring Data,Spring Data Jpa,当我在Spring数据JPA Reposiotry中创建一个使用注释的方法时,我得到了一个org.hibernate.hql.internal.ast.QuerySyntaxException:Test未映射,Spring数据JPA会验证它 Caused by: java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: Test is not mapped [SELECT t
org.hibernate.hql.internal.ast.QuerySyntaxException:Test未映射,Spring数据JPA会验证它
Caused by: java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: Test is not mapped [SELECT t from Test t]
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1750)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1677)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1683)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:331)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.8.0_40]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) [rt.jar:1.8.0_40]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_40]
at java.lang.reflect.Method.invoke(Method.java:497) [rt.jar:1.8.0_40]
at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:344)
at com.sun.proxy.$Proxy125.createQuery(Unknown Source)
at org.springframework.data.jpa.repository.query.SimpleJpaQuery.validateQuery(SimpleJpaQuery.java:86)
... 47 more
存储库如下所示:
public interface TestRepository extends JpaRepository<Test, Long>{
Test findByDescriptionContaining(String text); //works
@Query("SELECT t from Test t") //fails
Test getOr();
}
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(basePackages = "com.company", entityManagerFactoryRef = "localContainerEntityManagerFactoryBean")
@ComponentScan("com.company")
public class PersistenceJPAConfig {
private static final Logger LOGGER = LoggerFactory.getLogger(PersistenceJPAConfig.class);
@Bean
@DependsOn("dataSource")
public JdbcTemplate jdbcTemplate() {
return new JdbcTemplate(dataSource());
}
@Bean
@DependsOn("dataSource")
public NamedParameterJdbcTemplate namedParameterJdbcTemplate() {
return new NamedParameterJdbcTemplate(dataSource());
}
@Bean
public MailSender mailSender(){
final MailSenderImpl mailSenderImpl = new MailSenderImpl();
mailSenderImpl.setDataSource(dataSource());
return mailSenderImpl;
}
@Bean
public DataSource dataSource() {
HikariConfig config = new HikariConfig();
config.setDriverClassName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
config.setJdbcUrl("jdbc:sqlserver://localhost;DatabaseName=mydb");
config.setUsername("user");
config.setPassword("pass");
config.setPoolName("HikariCpConnectionPool");
config.setMaximumPoolSize(50);
config.setMinimumIdle(2);
return new HikariDataSource(config);
}
@Bean
@DependsOn({"dataSource"})
public LocalContainerEntityManagerFactoryBean localContainerEntityManagerFactoryBean() {
LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
em.setDataSource(dataSource());
em.setPackagesToScan(new String[]{
"com.company.**.*"
});
em.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
em.setJpaProperties(additionalProperties());
return em;
}
@Bean
public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
return new PersistenceExceptionTranslationPostProcessor();
}
@Bean
public PlatformTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
return new JpaTransactionManager(entityManagerFactory);
}
private Properties additionalProperties() {
Properties properties = new Properties();
properties.setProperty("hibernate.hbm2ddl.auto", "update");
properties.setProperty("hibernate.dialect", "org.hibernate.dialect.SQLServer2012Dialect");
properties.setProperty("hibernate.show_sql", "false");
properties.setProperty("hibernate.format_sql", "false");
properties.setProperty("hibernate.use_sql_comments", "false");
properties.setProperty("hibernate.id.new_generator_mappings", "false");
properties.setProperty("hibernate.enable_lazy_load_no_trans", "true");
properties.setProperty("hibernate.generate_statistics", "false");
return properties;
}
}
更新:测试实体。基本实体具有@Id Long Id
,是@MappedSuperClass
@Entity(name = "test")
public class Test extends BaseEntity{
public Test() {
}
@Column(name = "description")
private String description;
使用列表
获取所有对象
@Query("SELECT t from Test t") //fails
List<Test> getOr();
@Query(“从测试t中选择t”)//失败
List getOr();
因为从测试t中选择t
从数据库中获取所有行。删除setPackagesToScan属性中的*
,只需使用-em.setPackagesToScan(新字符串[]{“com.company”})代码>
在实体中,指定一个名称
属性,覆盖默认命名(类名称的使用)。因此,您的查询是错误的,您的查询需要一个名为Test
的实体,但该实体不可用
您有两种可能的解决方案
删除name
属性并保持查询不变
将查询更改为selectt fromtest t
(注意t
而不是t
)李>
随后,您的返回类型也是错误的,因为它将返回元素的集合,而不是单个元素。因此,如果表的名称是数据库中的test,则将其更改为列表
如下所示
@Entity
@Table(name="test")
Test
类是否用@Entity
注释?是的,它用@Entity注释。您将Test
实体放在哪个包中?该包是:com.company.Test
。然而,我发现当我拥有packagesToScan
com.company.**
时,它将搜索com.company.
下面的所有包。
此外,请向我们提供测试类的代码。请您怎么说?我将存储库中的方法更改为List getOr()代码>但它不工作-我仍然得到相同的错误。setproperties.setProperty(“hibernate.show_sql”,“true”)代码>然后查看查询出了什么问题。F**k。你是对的。我认为名称
定义了数据库中的表名。我忘记了@Table
注释是这样做的。4年JPA经验;)接受
@Entity
@Table(name="test")