如何在 Hibernate + Spring 中使用 Oracle 序列
How to use Oracle sequence with Hibernate + Spring
在我的实体里面 class
package com.entity;
// Generated May 23, 2015 10:43:49 PM by Hibernate Tools 4.3.1
import java.math.BigDecimal;
import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
/**
* EmpTest generated by hbm2java
*/
@Entity
@Table(name="EMP_TEST"
,schema="SCOTT"
)
public class EmpTest implements java.io.Serializable {
private BigDecimal id;
private String ename;
private Date dob;
private BigDecimal sal;
public EmpTest() {
}
public EmpTest(BigDecimal id, String ename, Date dob, BigDecimal sal) {
this.id = id;
this.ename = ename;
this.dob = dob;
this.sal = sal;
}
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE,
generator = "test_seq")
@SequenceGenerator(name = "test_seq",
sequenceName = "TEST_SEQ" , allocationSize=1)
@Column(name="ID", unique=true, nullable=false, precision=22, scale=0)
public BigDecimal getId() {
return this.id;
}
public void setId(BigDecimal id) {
this.id = id;
}
@Column(name="ENAME", nullable=false, length=50)
public String getEname() {
return this.ename;
}
public void setEname(String ename) {
this.ename = ename;
}
@Temporal(TemporalType.DATE)
@Column(name="DOB", nullable=false, length=7)
public Date getDob() {
return this.dob;
}
public void setDob(Date dob) {
this.dob = dob;
}
@Column(name="SAL", nullable=false, precision=5)
public BigDecimal getSal() {
return this.sal;
}
public void setSal(BigDecimal sal) {
this.sal = sal;
}
}
TEST_SEQ 是我在我的模式下创建的序列。但是，当我尝试添加记录时出现以下异常
Hibernate: select hibernate_sequence.nextval from dual
Hibernate: select this_.ID as ID1_0_0_, this_.ENAME as ENAME2_0_0_, this_.DOB as DOB3_0_0_, this_.SAL as SAL4_0_0_ from SCOTT.EMP_TEST this_
at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:80)
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:89)
at org.hibernate.id.SequenceGenerator.generateHolder(SequenceGenerator.java:122)
at org.hibernate.id.SequenceGenerator.generate(SequenceGenerator.java:115)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:117)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:209)
at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:55)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:194)
at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:49)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)
at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:711)
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:703)
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:698)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.hibernate.context.internal.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:356)
at com.sun.proxy.$Proxy318.save(Unknown Source)
at com.model.EmpModelImp.add(EmpModelImp.java:32)
at com.model.EmpServiceImpl.add(EmpServiceImpl.java:27)
at com.controller.EmpControl.doActions(EmpControl.java:64)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:214)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
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:749)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:690)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:945)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:876)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:863)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:644)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1085)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1556)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1513)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.sql.SQLSyntaxErrorException: ORA-02289: sequence does not exist
at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.java:91)
at oracle.jdbc.driver.DatabaseError.newSQLException(DatabaseError.java:133)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:206)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:455)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:413)
at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:1034)
at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:194)
at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:791)
at oracle.jdbc.driver.T4CPreparedStatement.executeMaybeDescribe(T4CPreparedStatement.java:866)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1186)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3387)
at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3431)
at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1491)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:80)
... 62 more
我注意到，它正在尝试从 hibernate_sequence 序列中获取下一个值，而我的数据库中不存在该值。另一方面，在我的实体 class 中，我指向 TEST_SEQ，它存在于我的数据库中。我不明白为什么它会尝试从 hibernate_sequence 获取下一个序列值。有人可以帮我解决这个问题吗？
==更新==
EmpTest.hbm.xml
<hibernate-mapping>
<class name="com.entity.EmpTest" table="EMP_TEST" schema="SCOTT" optimistic-lock="version">
<id name="id" type="big_decimal">
<column name="ID" precision="22" scale="0" />
<generator class="sequence" />
</id>
<property name="ename" type="string">
<column name="ENAME" length="50" not-null="true" />
</property>
<property name="dob" type="date">
<column name="DOB" length="7" not-null="true" />
</property>
<property name="sal" type="big_decimal">
<column name="SAL" precision="5" not-null="true" />
</property>
</class>
</hibernate-mapping>
添加功能插入记录到table
public void add(EmpTest emp) {
try {
session = HibernateUtil.getSessionFactory().getCurrentSession();
tx = session.beginTransaction();
System.out.println(emp.getEname()+" "+emp.getDob());
session.save(emp);
tx.commit();
} catch (Exception ex) {
tx.rollback();
ex.printStackTrace();
}
}
您的 EmpTest.hbm.xml 映射文件没有引用您的序列。尝试将其更改为以下内容：
<hibernate-mapping>
<class name="com.entity.EmpTest" table="EMP_TEST" schema="SCOTT" optimistic-lock="version">
<id name="id" type="big_decimal">
<column name="ID" precision="22" scale="0" />
<generator class="sequence">
<param name="sequence">TEST_SEQ</param>
</generator>
</id>
<property name="ename" type="string">
<column name="ENAME" length="50" not-null="true" />
</property>
<property name="dob" type="date">
<column name="DOB" length="7" not-null="true" />
</property>
<property name="sal" type="big_decimal">
<column name="SAL" precision="5" not-null="true" />
</property>
</class>
</hibernate-mapping>
在我的实体里面 class
package com.entity;
// Generated May 23, 2015 10:43:49 PM by Hibernate Tools 4.3.1
import java.math.BigDecimal;
import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
/**
* EmpTest generated by hbm2java
*/
@Entity
@Table(name="EMP_TEST"
,schema="SCOTT"
)
public class EmpTest implements java.io.Serializable {
private BigDecimal id;
private String ename;
private Date dob;
private BigDecimal sal;
public EmpTest() {
}
public EmpTest(BigDecimal id, String ename, Date dob, BigDecimal sal) {
this.id = id;
this.ename = ename;
this.dob = dob;
this.sal = sal;
}
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE,
generator = "test_seq")
@SequenceGenerator(name = "test_seq",
sequenceName = "TEST_SEQ" , allocationSize=1)
@Column(name="ID", unique=true, nullable=false, precision=22, scale=0)
public BigDecimal getId() {
return this.id;
}
public void setId(BigDecimal id) {
this.id = id;
}
@Column(name="ENAME", nullable=false, length=50)
public String getEname() {
return this.ename;
}
public void setEname(String ename) {
this.ename = ename;
}
@Temporal(TemporalType.DATE)
@Column(name="DOB", nullable=false, length=7)
public Date getDob() {
return this.dob;
}
public void setDob(Date dob) {
this.dob = dob;
}
@Column(name="SAL", nullable=false, precision=5)
public BigDecimal getSal() {
return this.sal;
}
public void setSal(BigDecimal sal) {
this.sal = sal;
}
}
TEST_SEQ 是我在我的模式下创建的序列。但是，当我尝试添加记录时出现以下异常
Hibernate: select hibernate_sequence.nextval from dual
Hibernate: select this_.ID as ID1_0_0_, this_.ENAME as ENAME2_0_0_, this_.DOB as DOB3_0_0_, this_.SAL as SAL4_0_0_ from SCOTT.EMP_TEST this_
at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:80)
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:89)
at org.hibernate.id.SequenceGenerator.generateHolder(SequenceGenerator.java:122)
at org.hibernate.id.SequenceGenerator.generate(SequenceGenerator.java:115)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:117)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:209)
at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:55)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:194)
at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:49)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)
at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:711)
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:703)
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:698)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.hibernate.context.internal.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:356)
at com.sun.proxy.$Proxy318.save(Unknown Source)
at com.model.EmpModelImp.add(EmpModelImp.java:32)
at com.model.EmpServiceImpl.add(EmpServiceImpl.java:27)
at com.controller.EmpControl.doActions(EmpControl.java:64)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:214)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
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:749)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:690)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:945)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:876)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:863)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:644)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1085)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1556)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1513)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.sql.SQLSyntaxErrorException: ORA-02289: sequence does not exist
at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.java:91)
at oracle.jdbc.driver.DatabaseError.newSQLException(DatabaseError.java:133)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:206)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:455)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:413)
at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:1034)
at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:194)
at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:791)
at oracle.jdbc.driver.T4CPreparedStatement.executeMaybeDescribe(T4CPreparedStatement.java:866)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1186)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3387)
at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3431)
at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeQuery(OraclePreparedStatementWrapper.java:1491)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:80)
... 62 more
我注意到，它正在尝试从 hibernate_sequence 序列中获取下一个值，而我的数据库中不存在该值。另一方面，在我的实体 class 中，我指向 TEST_SEQ，它存在于我的数据库中。我不明白为什么它会尝试从 hibernate_sequence 获取下一个序列值。有人可以帮我解决这个问题吗？
==更新==
EmpTest.hbm.xml
<hibernate-mapping>
<class name="com.entity.EmpTest" table="EMP_TEST" schema="SCOTT" optimistic-lock="version">
<id name="id" type="big_decimal">
<column name="ID" precision="22" scale="0" />
<generator class="sequence" />
</id>
<property name="ename" type="string">
<column name="ENAME" length="50" not-null="true" />
</property>
<property name="dob" type="date">
<column name="DOB" length="7" not-null="true" />
</property>
<property name="sal" type="big_decimal">
<column name="SAL" precision="5" not-null="true" />
</property>
</class>
</hibernate-mapping>
添加功能插入记录到table
public void add(EmpTest emp) {
try {
session = HibernateUtil.getSessionFactory().getCurrentSession();
tx = session.beginTransaction();
System.out.println(emp.getEname()+" "+emp.getDob());
session.save(emp);
tx.commit();
} catch (Exception ex) {
tx.rollback();
ex.printStackTrace();
}
}
您的 EmpTest.hbm.xml 映射文件没有引用您的序列。尝试将其更改为以下内容：
<hibernate-mapping>
<class name="com.entity.EmpTest" table="EMP_TEST" schema="SCOTT" optimistic-lock="version">
<id name="id" type="big_decimal">
<column name="ID" precision="22" scale="0" />
<generator class="sequence">
<param name="sequence">TEST_SEQ</param>
</generator>
</id>
<property name="ename" type="string">
<column name="ENAME" length="50" not-null="true" />
</property>
<property name="dob" type="date">
<column name="DOB" length="7" not-null="true" />
</property>
<property name="sal" type="big_decimal">
<column name="SAL" precision="5" not-null="true" />
</property>
</class>
</hibernate-mapping>