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如何使用JPA和Spring Data執行存儲過程?

[英]How can I execute a stored procedure with JPA & Spring Data?

我試圖在我的數據庫中調用Terminal_GetTicket存儲過程,但不斷收到以下異常:

PropertyReferenceException: No property getTicket found for type TicketInfo

我用一個非常簡單的測試實體交叉驗證了我的配置,一切似乎都運行正常,但是對於實際情況,有些事情是錯誤的。

這是我的域實體( 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;

所有實例變量都正確定義了getter和setter,並且存儲過程總共有5個輸出參數與TicketInfo的屬性相匹配。

此外,這是我的存儲庫界面:

public interface TicketInfoRepository extends CrudRepository<TicketInfo, Long> {
    @Transactional(timeout = 5)
    @Procedure
    TicketInfo getTicket(Integer sys_id_game);
}

另外,這是我的context.xml文件(對於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>

最后是存儲過程本身的淡化版本:

ALTER PROCEDURE [Terminal_GetTicket](
 @arg int 
,@res int output
,@res2 int output
)
as
Declare @error int

select 0, 1, 2

RETURN @error

現在,每當我嘗試設置@Autowired注釋時,我都會得到上面提到的異常。

我記得我一直在努力學習MS SQL存儲過程和spring-data-jpa。 這就是我能夠成功運行它的方法:

模型:

@NamedNativeQueries({
    @NamedNativeQuery(
            name = "yourInternalName",
            query = "EXEC [procedure_name] :param1, :param2",
            resultClass = Foo.class
    )
 })
 @Entity
 public class Foo{

     /* Fields, getters, setters*/
}

這非常簡單。 這種方法不同,你不是直接聲明程序(這也是你決定改變RDBS時不必工作的原因)。

然后你必須擴展你的存儲庫:

public interface FooRepositoryCustom {

     Foo fancyMethodName(arg1, arg2);
}

並直接實現它:

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();
}

讓我們把它們放在一起:

public interface FooRepository extends CrudRepository<Foo, Long>, FooRepositoryCustom {

}

請注意,如果您決定返回例如Foo對象列表,則只編輯自定義存儲庫中的返回值。

我遵循SirKometas的建議,但我無法讓它工作,所以我提出了一些對我有用的東西,我認為從語法的角度來看更好。 首先創建您的實體類,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 {

那么存儲庫的Implementation類將是:

@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();
    }
}

其余的實現就像上面SirKometa的答案。 還要考慮您必須在應用程序中創建一個EntityManager bean才能使其工作。

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