那些遇到过的问题

@NamedStoredProcedureQuery with Spring Data JPA Repository - 类型不能为空错误

Cra*_*aig 4 java spring hibernate jpa

我有一个 JPA 实体类 RequestSummary，它最初是从数据库视图中填充的。出于性能原因，我正在尝试重构它以使用存储过程，但在正确设置它时遇到问题。

我有一个存储过程'sp_bsc_request_summary'，它以一个staffId 作为参数。

我的 spring 数据存储库看起来像这样

public interface RequestSummaryRepository extends JpaRepository<RequestSummary, Long> {

@Procedure("procedureFindAll")
public List<RequestSummary> procedureFindAll(@Param("staffId") Long staffId);
}
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我的 JPA 实体看起来像这样......

@Entity
@Table(name = "vw_bsc_request_summary")
@NamedStoredProcedureQuery(
    name = "procedureFindAll", 
    procedureName = "sp_bsc_request_summary", 
    resultClasses = {RequestSummary.class}, 
    parameters = {@StoredProcedureParameter(mode = ParameterMode.IN, type = Long.class, name = "staffId")})

public class RequestSummary {

    @Id
    @Column(name = "bsc_request_id")
    private Long id;
    ....etc
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所以有些事情我不确定

  • 该实体不再受 'vw_bsc_request_summary' 支持，所以我是否完全删除了 @Table 注释？如果我这样做了，那么 JPA 会抱怨无法找到具有默认名称 RequestSummary 的表
  • 如果此实体不受表或视图支持，我是否应该包含 @Entity 注释？

使用上面的代码，当我尝试运行集成测试来调用该方法时

@Test
public void testFindAll() {
    final List<RequestSummary> requests = this.summaryRepo.procedureFindAll(61953104L);
    Assert.assertNotNull(requests);
    Assert.assertTrue(requests.size() > 0);
}
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然后我得到一个堆栈跟踪，抱怨一个空的 HibernateType

org.springframework.dao.InvalidDataAccessApiUsageException: Type cannot be null; nested exception is java.lang.IllegalArgumentException: Type cannot be null
    at org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:381)
    at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:157)
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:417)
    at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:59)
    at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:213)
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:147)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodIntercceptor.invoke(CrudMethodMetadataPostProcessor.java:122)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
    at com.sun.proxy.$Proxy54.procedureFindAll(Unknown Source)
    at com.hsbc.gbgcf.bsc.repository.RequestRepositoryIntegrationTest.testFindAll(RequestRepositoryIntegrationTest.java:111)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:88)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: java.lang.IllegalArgumentException: Type cannot be null
    at org.hibernate.procedure.internal.AbstractParameterRegistrationImpl.setHibernateType(AbstractParameterRegistrationImpl.java:182)
    at org.hibernate.procedure.internal.AbstractParameterRegistrationImpl.<init>(AbstractParameterRegistrationImpl.java:131)
    at org.hibernate.procedure.internal.AbstractParameterRegistrationImpl.<init>(AbstractParameterRegistrationImpl.java:140)
    at org.hibernate.procedure.internal.AbstractParameterRegistrationImpl.<init>(AbstractParameterRegistrationImpl.java:97)
    at org.hibernate.procedure.internal.NamedParameterRegistration.<init>(NamedParameterRegistration.java:41)
    at org.hibernate.procedure.internal.ProcedureCallImpl.registerParameter(ProcedureCallImpl.java:344)
    at org.hibernate.jpa.internal.StoredProcedureQueryImpl.registerStoredProcedureParameter(StoredProcedureQueryImpl.java:152)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.springframework.orm.jpa.SharedEntityManagerCreator$DeferredQueryInvocationHandler.invoke(SharedEntityManagerCreator.java:362)
    at com.sun.proxy.$Proxy68.registerStoredProcedureParameter(Unknown Source)
    at org.springframework.data.jpa.repository.query.StoredProcedureJpaQuery.newAdhocStoredProcedureQuery(StoredProcedureJpaQuery.java:175)
    at org.springframework.data.jpa.repository.query.StoredProcedureJpaQuery.createStoredProcedure(StoredProcedureJpaQuery.java:130)
    at org.springframework.data.jpa.repository.query.StoredProcedureJpaQuery.doCreateQuery(StoredProcedureJpaQuery.java:89)
    at org.springframework.data.jpa.repository.query.StoredProcedureJpaQuery.createQuery(StoredProcedureJpaQuery.java:80)
    at org.springframework.data.jpa.repository.query.JpaQueryExecution$ProcedureExecution.doExecute(JpaQueryExecution.java:298)
    at org.springframework.data.jpa.repository.query.JpaQueryExecution.execute(JpaQueryExecution.java:77)
    at org.springframework.data.jpa.repository.query.AbstractJpaQuery.doExecute(AbstractJpaQuery.java:100)
    at org.springframework.data.jpa.repository.query.AbstractJpaQuery.execute(AbstractJpaQuery.java:91)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:393)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:371)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)
    ... 37 more
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我查看了许多其他帖子和 Spring.io 文档，但我仍在努力解决这个问题。

有任何想法吗？

更新

所以遵循lanemax的建议……我的服务方法是这样的：

public List<RequestSummary> findAll(final Long staffId) {
    final StoredProcedureQuery storedProcedureQuery = this.entityManager.createNamedStoredProcedureQuery("procedureFindAll");
    storedProcedureQuery.setParameter("staffId", staffId);
    storedProcedureQuery.execute();
    return storedProcedureQuery.getResultList();
}
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我的实体类是这样的

@NamedStoredProcedureQuery(name = "procedureFindAll", procedureName = "sp_bsc_request_summary", parameters = {
@StoredProcedureParameter(mode = ParameterMode.IN, type = Long.class, name = "staffId")}, resultSetMappings = "mapping")

@SqlResultSetMapping(name = "mapping", classes = {@ConstructorResult(targetClass = RequestSummary.class, columns = {
@ColumnResult(name = "bsc_request_id", type = Long.class), @ColumnResult(name = "created_date", type = Date.class),
@ColumnResult(name = "transaction_size", type = BigDecimal.class),
@ColumnResult(name = "approval_status_id", type = Long.class),
@ColumnResult(name = "approval_status_desc", type = String.class), @ColumnResult(name = "approval_key", type = String.class),
@ColumnResult(name = "captain_staff_id", type = Long.class), @ColumnResult(name = "captain_name", type = String.class),
@ColumnResult(name = "captain_country_id", type = Long.class), @ColumnResult(name = "captain_country", type = String.class),
@ColumnResult(name = "est_fee_usd", type = BigDecimal.class), @ColumnResult(name = "client_vision_id", type = String.class),
@ColumnResult(name = "client_full_name", type = String.class), @ColumnResult(name = "client_country_id", type = Long.class),
@ColumnResult(name = "country_description", type = String.class), @ColumnResult(name = "mastergroup", type = String.class),
@ColumnResult(name = "decision_staff_id", type = Long.class), @ColumnResult(name = "decision_staff_name", type = String.class),
@ColumnResult(name = "temporary_client_name", type = String.class)

})})
@Entity
public class RequestSummary {

@Id
private Long id;
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当我调用该方法时，虽然我得到如下堆栈跟踪

2016-12-16 10:58:10,565 ERROR [http-bio-8080-exec-28] controller.RequestController - Current CallableStatement ou was not a ResultSet, but getResultList was called
java.lang.IllegalStateException: Current CallableStatement ou was not a ResultSet, but getResultList was called
at org.hibernate.jpa.internal.StoredProcedureQueryImpl.getResultList(StoredProcedureQueryImpl.java:336)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.orm.jpa.SharedEntityManagerCreator$DeferredQueryInvocationHandler.invoke(SharedEntityManagerCreator.java:362)
at com.sun.proxy.$Proxy82.getResultList(Unknown Source)
at com.company.gbgcf.bsc.service.RequestService.findAll(RequestService.java:112)
at com.company.gbgcf.bsc.service.RequestService.findAll(RequestService.java:125)
at com.company.gbgcf.bsc.controller.RequestController.findAllRequests(RequestController.java:102)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:747)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:676)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:938)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:369)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:97)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:100)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:78)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:35)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:177)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
at org.springframework.security.web.authentication.ui.DefaultLoginPageGeneratingFilter.doFilter(DefaultLoginPageGeneratingFilter.java:91)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:187)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
at com.company.gbgcf.bsc.filters.AuthenticatedSessionFilter.doFilter(AuthenticatedSessionFilter.java:143)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:79)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:381)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:168)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:947)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1009)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
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最初我认为这可能是因为该过程打印了一些调试信息以及记录集，但是删除了这些打印语句后，我仍然遇到相同的错误.....

更新 2

添加更多日志记录确认调用了正确的过程并绑定了参数...

    2016-12-16 11:54:53,883 DEBUG [http-bio-8080-exec-25] spi.SqlStatementLogger - 
    {call sp_bsc_request_summary(?)}
    Hibernate: 
    {call sp_bsc_request_summary(?)}
    2016-12-16 11:54:53,904 TRACE [http-bio-8080-exec-25] sql.BasicBinder - binding parameter [1] as [BIGINT] - [61953104]
2016-12-16 11:54:53,984 DEBUG [http-bio-8080-exec-1] annotation.AbstractMessageConverterMethodProcessor - Written [{"forename":"CRAIG","surname":"GORDON","roleNames":["DP_DEFAULT_VIEW_LAF","DP_MENU_DELETE","GB_ADVISORY_DEAL_STATUS_UPDATE_REPORT_USER","DP_ADD_NEW_DEAL","DP_CF_Report","GB

all*_*tej 6

我之前遇到过这个问题。首先@Procedure没有工作。所以我去了@NamedStoredProcedureQuery。那行得通，但我发现它有很多管道或样板代码。我优雅/简洁的解决方案是使用nativeQuery. 尝试模仿上面的代码，我的解决方案如下所示：

public interface ProcedureFindAll extends JpaRepository<RequestSummary, Long> {

    @Query(value = "EXECUTE sp_bsc_request_summary :staffId", nativeQuery = true)
    List<RequestSummary> findAllRequestSummary( @Param( "staffId" ) Long staffId);
}
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并且您的实体将只有实体注释。

@Entity
public class RequestSummary {

    @Id
    private Long id;
    //...code remove for brevity
}
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lan*_*ell 4

几个月前我们遇到了这个问题，不幸的是，找不到解决方案。我们所做的（你可能也可以）是创建一个服务，注入实体管理器，然后从那里调用它。这不是最佳的，但像您一样，我们努力尝试获得纯粹的 spring-data-jpa 解决方案。如果您想走这条路，这里有一个适合您的解决方案。

将您的实体定义稍微更改为

@NamedStoredProcedureQuery(name = "procedureFindAll", 
   procedureName = "sp_bsc_request_summary", 
   parameters = {
     @StoredProcedureParameter(mode = ParameterMode.IN, type = Long.class, name = "staffId")},
   ,resultSetMappings = "mapping"))
@SqlResultSetMapping(name = "mapping", classes = {
   @ConstructorResult(targetClass = RequestSummary.class, columns = {               
      @ColumnResult(name = "bsc_request_id", type = Long.class)
   })
})
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在上面，为要映射的每个字段添加 ColumnResult。您的服务将如下所示

...
@Autowired
private EntityManager entityManager;

public List<RequestSummary> findAll(Long staffId) {
   StoredProcedureQuery storedProcedureQuery = entityManager.createNamedStoredProcedureQuery("sp_bsc_request_summary");
   storedProcedureQuery.setParameter("staffId", staffId);
   storedProcedureQuery.execute();
   return storedProcedureQuery.getResultList();
}
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  • 您能找到使用“@procedure”而不是使用entityManager的解决方案吗？ (2认同)

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