不知道是什么原因导致此错误...
我有一个名为StudentUnit的类，其中可以包含单元列表。
如果仅获取StudentUnit对象，则结果正常，但如果尝试获取Units（添加fetchType == eager），则将得到java.sql.SQLSyntaxErrorException：ORA-01722：无效数字
但是请注意，我映射到Unit的字段（unitCode，unitNm）都是Strings。我一直在想，将unitCode设置为@id或与此相关的东西是否可能是一个问题...
@Entity
@Table(name = "STUDENT_UNITS")
@NamedQuery (name ="StudentUnit.findByCourseAttemptNo",
query ="SELECT su FROM StudentUnit su WHERE su.studentNo = :studentNo and su.courseNo = :courseNo and su.courseAttemptNo = :courseAttemptNo")
@FetchProfile(name = "studentUnit", fetchOverrides = { @FetchProfile.FetchOverride(entity = StudentUnit.class, association = "units", mode = FetchMode.JOIN) })
public class StudentUnit{
@Id
@Column(name = "STUDENT_NO")
private Integer studentNo;
@Column(name = "COURSE_NO")
private Integer courseNo;
@Column(name = "UNIT_CODE")
private String unitCode;
@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER, mappedBy = "unitCode")//this one gives problems,which proves the issue is on Unit
//@OneToMany(mappedBy = "unitCode"): this one is ok, once never tries to get the Unit
private List<Unit> units;
}
@Entity
@Table(name="UNITS")
public class Unit {
@Id
@Column(name = "UNIT_CODE")
private String unitCode;
@Column(name = "UNIT_NM")
private String unitNm;
@Column(name = "GRADE_CODE_NO")
private Integer gradeCodeNo;
@Column(name = "IMPLEMENTATION_DATE")
private Date implementationDate;
//getters/setters
}
来自数据库的信息：
STUDENT_UNITS
(
STUDENT_NO NUMBER(10),
COURSE_NO NUMBER(5),
COURSE_ATTEMPT_NO NUMBER(5),
UNIT_CODE VARCHAR2(16 BYTE),
ORIGINATING_DBKEY NUMBER
)
UNITS
(
UNIT_CODE VARCHAR2(16 BYTE),
UNIT_STEM VARCHAR2(15 BYTE),
UNIT_ANTA_VERSION_NO VARCHAR2(1 BYTE),
UNIT_NM VARCHAR2(100 BYTE),
IMPLEMENTATION_DATE DATE
)
更多错误日志：
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.dao.InvalidDataAccessResourceUsageException: could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not extract ResultSet
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:948)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827)
javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
root cause
org.springframework.dao.InvalidDataAccessResourceUsageException: could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not extract ResultSet
org.springframework.orm.hibernate4.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:130)
org.springframework.orm.hibernate4.HibernateExceptionTranslator.convertHibernateAccessException(HibernateExceptionTranslator.java:56)
org.springframework.orm.hibernate4.HibernateExceptionTranslator.translateExceptionIfPossible(HibernateExceptionTranslator.java:43)
org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:58)
org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:213)
org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:163)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
$Proxy207.findStudentUnits(Unknown Source)
servicePack.service.student.StudentUnitsService.findStudentUnits(StudentUnitsService.java:21)
servicePack.service.student.StudentUnitsService$$FastClassByCGLIB$$bfb0625f.invoke(<generated>)
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:698)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96)
org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:631)
servicePack.service.student.StudentUnitsService$$EnhancerByCGLIB$$6133a5f5.findStudentUnits(<generated>)
servicePack.controller.StudentUnitsController.retrieveStudentUnits(StudentUnitsController.java:37)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:219)
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:745)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:686)
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827)
javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
root cause
org.hibernate.exception.SQLGrammarException: could not extract ResultSet
org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:82)
org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)
org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125)
org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:110)
org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:61)
org.hibernate.loader.Loader.getResultSet(Loader.java:2031)
org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1832)
org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1811)
org.hibernate.loader.Loader.doQuery(Loader.java:899)
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:341)
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:311)
org.hibernate.loader.Loader.loadCollection(Loader.java:2228)
org.hibernate.loader.collection.CollectionLoader.initialize(CollectionLoader.java:65)
org.hibernate.persister.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:674)
org.hibernate.event.internal.DefaultInitializeCollectionEventListener.onInitializeCollection(DefaultInitializeCollectionEventListener.java:80)
org.hibernate.internal.SessionImpl.initializeCollection(SessionImpl.java:1848)
org.hibernate.collection.internal.AbstractPersistentCollection.forceInitialization(AbstractPersistentCollection.java:681)
org.hibernate.engine.internal.StatefulPersistenceContext.initializeNonLazyCollections(StatefulPersistenceContext.java:1030)
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:346)
org.hibernate.loader.Loader.doList(Loader.java:2516)
org.hibernate.loader.Loader.doList(Loader.java:2502)
org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2332)
org.hibernate.loader.Loader.list(Loader.java:2327)
org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:490)
org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:355)
org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:195)
org.hibernate.internal.SessionImpl.list(SessionImpl.java:1268)
org.hibernate.internal.QueryImpl.list(QueryImpl.java:101)
myPack.StudentUnitsSearchDaoImpl.findStudentUnits(StudentUnitsSearchDaoImpl.java:44)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:155)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
$Proxy207.findStudentUnits(Unknown Source)
servicePack.service.student.StudentUnitsService.findStudentUnits(StudentUnitsService.java:21)
servicePack.service.student.StudentUnitsService$$FastClassByCGLIB$$bfb0625f.invoke(<generated>)
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:698)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96)
org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:631)
servicePack.service.student.StudentUnitsService$$EnhancerByCGLIB$$6133a5f5.findStudentUnits(<generated>)
servicePack.controller.StudentUnitsController.retrieveStudentUnits(StudentUnitsController.java:37)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:219)
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:745)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:686)
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827)
javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
root cause
java.sql.SQLSyntaxErrorException: ORA-01722: invalid number
oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:445)
oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:396)
oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:879)
oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:450)
oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:192)
oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:531)
oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:207)
oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:884)
oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:1167)
oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1289)
oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3584)
oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3628)
oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1493)
org.jboss.jca.adapters.jdbc.WrappedPreparedStatement.executeQuery(WrappedPreparedStatement.java:462)
org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:56)
org.hibernate.loader.Loader.getResultSet(Loader.java:2031)
org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1832)
org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1811)
org.hibernate.loader.Loader.doQuery(Loader.java:899)
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:341)
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:311)
org.hibernate.loader.Loader.loadCollection(Loader.java:2228)
org.hibernate.loader.collection.CollectionLoader.initialize(CollectionLoader.java:65)
org.hibernate.persister.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:674)
org.hibernate.event.internal.DefaultInitializeCollectionEventListener.onInitializeCollection(DefaultInitializeCollectionEventListener.java:80)
org.hibernate.internal.SessionImpl.initializeCollection(SessionImpl.java:1848)
org.hibernate.collection.internal.AbstractPersistentCollection.forceInitialization(AbstractPersistentCollection.java:681)
org.hibernate.engine.internal.StatefulPersistenceContext.initializeNonLazyCollections(StatefulPersistenceContext.java:1030)
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:346)
org.hibernate.loader.Loader.doList(Loader.java:2516)
org.hibernate.loader.Loader.doList(Loader.java:2502)
org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2332)
org.hibernate.loader.Loader.list(Loader.java:2327)
org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:490)
org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:355)
org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:195)
org.hibernate.internal.SessionImpl.list(SessionImpl.java:1268)
org.hibernate.internal.QueryImpl.list(QueryImpl.java:101)
myPack.StudentUnitsSearchDaoImpl.findStudentUnits(StudentUnitsSearchDaoImpl.java:44)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:155)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
$Proxy207.findStudentUnits(Unknown Source)
servicePack.service.student.StudentUnitsService.findStudentUnits(StudentUnitsService.java:21)
servicePack.service.student.StudentUnitsService$$FastClassByCGLIB$$bfb0625f.invoke(<generated>)
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:698)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96)
org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:631)
servicePack.service.student.StudentUnitsService$$EnhancerByCGLIB$$6133a5f5.findStudentUnits(<generated>)
servicePack.controller.StudentUnitsController.retrieveStudentUnits(StudentUnitsController.java:37)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:219)
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:745)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:686)
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827)
javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
先感谢您，
泰国人
最佳答案
属性：
mappedBy = "unitCode"
是错误的：mappedBy应该指向类StudentUnit的属性，而不是String。
因此，只需清除mappingBy =“ unitCode”或尝试进行双向映射，如下所示：
public class StudentUnit{
...
@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER, mappedBy = "studentUnit")
private List<Unit> units;
}
@Entity
@Table(name="UNITS")
public class Unit {
@Id
@Column(name = "UNIT_CODE")
private String unitCode;
@ManyToOne
@JoinColumn(name="STUDENT_NO_ID")
private StudentUnit studentUnit;
@Column(name = "UNIT_NM")
private String unitNm;
}