当我在Spring Data JPA Reposiotry中创建一个使用@Query
注释的方法,并且Spring Data JPA对其进行验证时,出现了org.hibernate.hql.internal.ast.QuerySyntaxException: Test is not mapped
。
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
代码库长这样:
public interface TestRepository extends JpaRepository<Test, Long>{
Test findByDescriptionContaining(String text); //works
@Query("SELECT t from Test t") //fails
Test getOr();
}
有趣的是,我可以使用Spring Data JPA方法名称解析功能,并且这些查询有效。此外,当我向实体添加新字段并将hbm2ddl.auto设置为更新时,更改会持久保存到数据库。但是,使用
@Query
注释的查询无法正常工作。我的持久化配置如下:
@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。基础实体具有@Id Long id
并且是@MappedSuperClass
@Entity(name = "test")
public class Test extends BaseEntity{
public Test() {
}
@Column(name = "description")
private String description;
Test
类是否使用了@Entity
注解? - Buhake SindiTest
实体放在哪个包里了? - Omkar Puttaguntacom.company.test
。然而,我发现当我有packagesToScan
为com.company.**.*
时,它将搜索com.company.
下面的所有包。 - Robert Niestrojcom.company
内的所有类(例如,@ComponentScan("com.company.*")
)。 - Buhake Sindi