我正在使用 JPA 和 Hibernate 连接到 Postgres 数据库，但我无法将实体持久保存到数据库中。
我在数据库中有以下内容：
CREATE SEQUENCE "MODEL_C_MODEL_seq"
INCREMENT 1
MINVALUE 1
MAXVALUE 9223372036854775807
START 93
CACHE 1;
ALTER TABLE "MODEL_C_MODEL_seq"
CREATE TABLE "MODEL"
(
"C_USER" character varying(10) NOT NULL,
"C_MODEL" serial NOT NULL,
"TP_MODEL" character(5) NOT NULL,
"NM_MODEL" character varying(20) NOT NULL,
CONSTRAINT "MODEL_PK" PRIMARY KEY ("C_MODEL" ),
CONSTRAINT "MODEL_CUSER_FK" FOREIGN KEY ("C_USER")
REFERENCES "USER" ("C_USER") MATCH SIMPLE
ON UPDATE NO ACTION ON DELETE NO ACTION,
CONSTRAINT "MODEL_TPMODEL_FK" FOREIGN KEY ("TP_MODEL")
REFERENCES "ADM_TYPES" ("C_TYPE") MATCH SIMPLE
ON UPDATE NO ACTION ON DELETE NO ACTION,
CONSTRAINT "MODEL_CUSER_NMNAME_UNIQUE" UNIQUE ("C_USER" , "NM_MODEL" )
)
WITH (
OIDS=FALSE
);
我的实体是：
public class Model implements Serializable {
private static final long serialVersionUID = 1L;
**@Id
@SequenceGenerator(name="modelPKgen", sequenceName="MODEL_C_MODEL_seq")
@GeneratedValue(generator="modelPKgen", strategy= GenerationType.IDENTITY)
@Column(name = "\"C_MODEL\"", unique=true, insertable=false)
private int cModel;**
@OneToMany(cascade = CascadeType.ALL, fetch= FetchType.EAGER)//, mappedBy = "model", fetch= FetchType.EAGER)
@JoinColumn(name= "`C_MODEL`")
private Collection<State> stateCollection;
@JoinColumn(name = "`C_USER`", referencedColumnName ="`C_USER`", updatable = false)
@ManyToOne(optional = false)
private User user;
@Basic(optional = false)
@NotNull
@Size(min = 1, max = 20)
@Column(name = "\"NM_MODEL\"")
private String nmModel;
@JoinColumn(name = "\"TP_MODEL\"")
@ManyToOne(optional = false)
private AdmTypes admTypes;
...
检查许多帖子，我似乎对字段cModel有正确的注释。
我有一个执行以下操作的类：
Model dbModel = new Model(user.getCUser(), simModel.getName());
AdmTypes dbAdm = new AdmTypes(simModel.getType());
dbModel.setAdmTypes(dbAdm);
**em.persist(dbModel);**
em.flush();
执行时em.persist出现此错误的异常：
Caused by: org.hibernate.exception.SQLGrammarException: The column name "C_MODEL" was not found in this ResultSet.
在 em.persist 检查 Hibernate 完成的插入语句时，我看到：
insert
into
"MODEL"
("TP_MODEL", "NM_MODEL", "C_USER")
values
(?, ?, ?)
这是完美的，因为该句子在 postgres 中运行（插入具有新生成C_MODELid 的新记录）。
有谁知道会是什么？
更新（完整的堆栈跟踪）：
javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: The column name "C_MODEL" was not found in this ResultSet.
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1367)
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1295)
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1301)
at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:866)
at com.sun.enterprise.container.common.impl.EntityManagerWrapper.persist(EntityManagerWrapper.java:269)
at com.librethinking.simmodsys.persistence.adapters.ModelConverter.SIMModelToModel(ModelConverter.java:65)
at com.librethinking.simmodsys.ejb.ModelBean.saveSIMModel(ModelBean.java:72)
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:601)
at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1052)
at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1124)
at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:5366)
at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:619)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:571)
at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doAround(SystemInterceptorProxy.java:162)
at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:144)
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:601)
at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:861)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:370)
at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:5338)
at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:5326)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:214)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88)
at $Proxy186.saveSIMModel(Unknown Source)
at com.librethinking.simmodsys.ejb.__EJB31_Generated__ModelBean__Intf____Bean__.saveSIMModel(Unknown Source)
at com.librethinking.simmodsys.web.ModelsController.saveModel(ModelsController.java:366)
at com.librethinking.simmodsys.web.ModelsController.processRequest(ModelsController.java:104)
at com.librethinking.simmodsys.web.ModelsController.doPost(ModelsController.java:181)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:754)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1539)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:722)
Caused by: org.hibernate.exception.SQLGrammarException: The column name "C_MODEL" was not found in this ResultSet.
at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:122)
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:110)
at org.hibernate.engine.jdbc.internal.proxy.AbstractResultSetProxyHandler.continueInvocation(AbstractResultSetProxyHandler.java:108)
at org.hibernate.engine.jdbc.internal.proxy.AbstractProxyHandler.invoke(AbstractProxyHandler.java:81)
at $Proxy189.getInt(Unknown Source)
at org.hibernate.id.IdentifierGeneratorHelper.get(IdentifierGeneratorHelper.java:152)
at org.hibernate.id.IdentifierGeneratorHelper.getGeneratedIdentity(IdentifierGeneratorHelper.java:92)
at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:100)
at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:58)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2767)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3278)
at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:81)
at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:362)
at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:203)
at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:183)
at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:167)
at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:320)
at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:287)
at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:193)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:126)
at org.hibernate.ejb.event.EJB3PersistEventListener.saveWithGeneratedId(EJB3PersistEventListener.java:78)
at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:208)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:151)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:78)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:844)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:819)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:823)
at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:860)
... 58 more
Caused by: org.postgresql.util.PSQLException: The column name "C_MODEL" was not found in this ResultSet.
at org.postgresql.jdbc2.AbstractJdbc2ResultSet.findColumn(AbstractJdbc2ResultSet.java:2550)
at org.postgresql.jdbc2.AbstractJdbc2ResultSet.getInt(AbstractJdbc2ResultSet.java:2414)
at sun.reflect.GeneratedMethodAccessor93.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.hibernate.engine.jdbc.internal.proxy.AbstractResultSetProxyHandler.continueInvocation(AbstractResultSetProxyHandler.java:104)
... 83 more