[英]How can I execute a stored procedure with JPA & Spring Data?
我试图在我的数据库中调用Terminal_GetTicket
存储过程,但不断收到以下异常:
PropertyReferenceException: No property getTicket found for type TicketInfo
我用一个非常简单的测试实体交叉验证了我的配置,一切似乎都运行正常,但是对于实际情况,有些事情是错误的。
这是我的域实体( TicketInfo
):
@Entity
@NamedStoredProcedureQuery(name = "TicketInfo.getTicket", procedureName = "Terminal_GetTicket", resultClasses = TicketInfo.class, parameters = {
@StoredProcedureParameter(mode = ParameterMode.IN, name = "sys_id_game", type = Integer.class)})
public class TicketInfo {
@Id @GeneratedValue
private Long id;
private String idTicket;
private Integer externalTicketCode;
private Short sequenseAlert;
private Integer dlTimeStamp;
所有实例变量都正确定义了getter和setter,并且存储过程总共有5个输出参数与TicketInfo
的属性相匹配。
此外,这是我的存储库界面:
public interface TicketInfoRepository extends CrudRepository<TicketInfo, Long> {
@Transactional(timeout = 5)
@Procedure
TicketInfo getTicket(Integer sys_id_game);
}
另外,这是我的context.xml
文件(对于Spring):
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:repository="http://www.springframework.org/schema/data/repository"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.1.xsd
http://www.springframework.org/schema/data/jpa
http://www.springframework.org/schema/data/jpa/spring-jpa-1.8.xsd
http://www.springframework.org/schema/data/repository
http://www.springframework.org/schema/data/repository/spring-repository-1.5.xsd">
<context:component-scan base-package="ar.com.boldt.godzilla" />
<jpa:repositories base-package="xx.xxx.xxx.godzilla.business.dao" />
<bean id="jpaVendorAdapter"
class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="${dataSource.show.sql}" />
<property name="generateDdl" value="false" />
<property name="database" value="SQL_SERVER" />
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter" ref="jpaVendorAdapter" />
<!-- spring based scanning for entity classes -->
<property name="packagesToScan" value="xx.xxx.xxx.godzilla.business.dao" />
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager" />
<bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheCacheManager">
<property name="cacheManager" ref="ehcache" />
</bean>
<bean id="ehcache"
class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">
<property name="configLocation" value="classpath:ehcache.xml" />
</bean>
</beans>
最后是存储过程本身的淡化版本:
ALTER PROCEDURE [Terminal_GetTicket](
@arg int
,@res int output
,@res2 int output
)
as
Declare @error int
select 0, 1, 2
RETURN @error
现在,每当我尝试设置@Autowired
注释时,我都会得到上面提到的异常。
我记得我一直在努力学习MS SQL存储过程和spring-data-jpa。 这就是我能够成功运行它的方法:
模型:
@NamedNativeQueries({
@NamedNativeQuery(
name = "yourInternalName",
query = "EXEC [procedure_name] :param1, :param2",
resultClass = Foo.class
)
})
@Entity
public class Foo{
/* Fields, getters, setters*/
}
这非常简单。 这种方法不同,你不是直接声明程序(这也是你决定改变RDBS时不必工作的原因)。
然后你必须扩展你的存储库:
public interface FooRepositoryCustom {
Foo fancyMethodName(arg1, arg2);
}
并直接实现它:
public class FooRepositoryImpl implements FooRepositoryCustom {
@PersistenceContext
EntityManager entityManager;
@Override
public Foo fancyMethodName(arg1, arg2) {
Query query = entityManager.createNamedQuery("yourInternalName");
query.setParameter("param1", arg1);
query.setParameter("param2", arg2);
return query.getResultList();
}
让我们把它们放在一起:
public interface FooRepository extends CrudRepository<Foo, Long>, FooRepositoryCustom {
}
请注意,如果您决定返回例如Foo
对象列表,则只编辑自定义存储库中的返回值。
我遵循SirKometas的建议,但我无法让它工作,所以我提出了一些对我有用的东西,我认为从语法的角度来看更好。 首先创建您的实体类,如下所示。
@NamedStoredProcedureQueries({//
@NamedStoredProcedureQuery(//
name = "MySP"//
, procedureName = "my_sp"//
, parameters = { //
@StoredProcedureParameter(mode = ParameterMode.IN, name = "arg", type = String.class)}//
, resultClasses = Foo.class)//})
@Entity
public class Foo {
那么存储库的Implementation类将是:
@Component
public class FooRepositoryImpl implements FooCustomRepository {
@PersistenceContext
EntityManager entityManager;
@Override
public List<Foo> foo(String arg) {
Query query = entityManager.createNamedStoredProcedureQuery("MySP");
query.setParameter("arg", arg);
return query.getResultList();
}
}
其余的实现就像上面SirKometa的答案。 还要考虑您必须在应用程序中创建一个EntityManager bean才能使其工作。
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