我正在使用 hibernate 3.2.6 和 spring 2.5.6 我连接的数据库是:DB2 for Z OS 390 V8.1
当我运行我的测试用例(如下)时，我保存了测试文件对象。 Hibernate 确实将对象保存到数据库，但我的测试在保存后失败，它试图用正确的 ID 更新对象。我认为它没有获得正确的 ID(它看起来像是 ID 为“0”)，或者我什至不确定它为什么要尝试更新已经持久存在的对象。我不知道这是否是 spring、hibernate、映射、方言等问题。
我的配置:
业务对象:
<hibernate-mapping>
<class name="cat.edis.tmiweb.business.File" table="FILE">
<id name="id" type="java.lang.Long" column="gen_file_id">
<generator class="native"></generator>
</id>
<property name="creationTimeStamp" type="java.util.Date" column="crte_ts" />
<property name="name" type="java.lang.String" column="file_nm" />
<property name="type" type="java.lang.String" column="file_typ_desc" />
<property name="description" type="java.lang.String" column="file_desc" />
<property name="length" type="java.lang.Long" column="file_lgth" />
<property name="contentBlob" type="blob" column="file_cntnt" />
</class>
</hibernate-mapping>
POJO:
/*
* Created on Oct 9, 2009
*
*/
package cat.edis.tmiweb.business;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.sql.Blob;
import java.sql.SQLException;
import java.util.Date;
import org.hibernate.Hibernate;
/**
* @author dudekta
*/
public class File {
private Long id;
private Date creationTimeStamp;
private String name;
private String type;
private String description;
private Long length;
private byte[] content;
/** Don't invoke this. Used by Hibernate only. */
public void setContentBlob(Blob imageBlob) {
this.content = this.toByteArray(imageBlob);
}
/** Don't invoke this. Used by Hibernate only. */
public Blob getContentBlob() {
return Hibernate.createBlob(this.content);
}
private byte[] toByteArray(Blob fromBlob) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try {
return toByteArrayImpl(fromBlob, baos);
} catch (SQLException e) {
throw new RuntimeException(e);
} catch (IOException e) {
throw new RuntimeException(e);
} finally {
if (baos != null) {
try {
baos.close();
} catch (IOException ex) {
}
}
}
}
private byte[] toByteArrayImpl(Blob fromBlob, ByteArrayOutputStream baos)
throws SQLException, IOException {
byte[] buf = new byte[4000];
InputStream is = fromBlob.getBinaryStream();
try {
for (;;) {
int dataSize = is.read(buf);
if (dataSize == -1)
break;
baos.write(buf, 0, dataSize);
}
} finally {
if (is != null) {
try {
is.close();
} catch (IOException ex) {
}
}
}
return baos.toByteArray();
}
/**
* @return Returns the creationTimeStamp.
*/
public Date getCreationTimeStamp() {
return creationTimeStamp;
}
/**
* @param creationTimeStamp
* The creationTimeStamp to set.
*/
public void setCreationTimeStamp(Date creationTimeStamp) {
this.creationTimeStamp = creationTimeStamp;
}
/**
* @return Returns the description.
*/
public String getDescription() {
return description;
}
/**
* @param description
* The description to set.
*/
public void setDescription(String description) {
this.description = description;
}
/**
* @return Returns the id.
*/
public Long getId() {
return id;
}
/**
* @param id
* The id to set.
*/
public void setId(Long id) {
this.id = id;
}
/**
* @return Returns the length.
*/
public Long getLength() {
return length;
}
/**
* @param length
* The length to set.
*/
public void setLength(Long length) {
this.length = length;
}
/**
* @return Returns the name.
*/
public String getName() {
return name;
}
/**
* @param name
* The name to set.
*/
public void setName(String name) {
this.name = name;
}
/**
* @return Returns the type.
*/
public String getType() {
return type;
}
/**
* @param type
* The type to set.
*/
public void setType(String type) {
this.type = type;
}
/**
* @return Returns the content.
*/
public byte[] getContent() {
return content;
}
/**
* @param content
* The content to set.
*/
public void setContent(byte[] content) {
this.content = content;
}
}
应用上下文:
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
<!-- Webservices -->
<bean id="FPSService" class="cat.edis.tmiweb.services.fps.FPSServiceImpl">
<constructor-arg type="java.lang.String" value="http://localhost:8888/someendpoint" />
<constructor-arg type="java.lang.String" value="bill" />
<constructor-arg type="java.lang.String" value="will" />
</bean>
<!-- Database stuff that we should separate out-->
<bean id="fileDAO" class="cat.edis.tmiweb.dao.FileDAOImpl">
<property name="sessionFactory">
<ref bean="TMISessionFactory" />
</property>
</bean>
<bean id="TMIDataSource" class="cat.cis.template.spring.util.TUFDataSource" destroy-method="close">
<property name="poolName" value="db2OS390GenData" />
</bean>
<bean id="TMISessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="TMIDataSource" />
<property name="mappingResources">
<list>
<!-- PUT HIBERNATE MAPPING FILES HERE -->
<value>cat/edis/tmiweb/business/File.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<map>
<entry>
<key>
<value>hibernate.show_sql</value>
</key>
<value>true</value>
</entry>
<entry>
<key>
<value>hibernate.default_schema</value>
</key>
<value>N4GK001$</value>
</entry>
<entry>
<key>
<value>hibernate.dialect</value>
</key>
<ref bean="TMIDialect" />
</entry>
</map>
</property>
</bean>
<bean id="TMIDialect" factory-bean="TMIDialectFactory" factory-method="instance" />
<bean id="TMIDialectFactory" class="cat.cis.template.spring.util.EnvironmentBeanStrategyFactory">
<property name="envKey" value="tuf.environment" />
<property name="defaultKey" value="DEV" />
<property name="target">
<map>
<entry key="DEV" value="org.hibernate.dialect.DB2390Dialect" />
<entry key="TEST" value="org.hibernate.dialect.DB2390Dialect" />
<entry key="QA" value="org.hibernate.dialect.DB2390Dialect" />
<entry key="PROD" value="org.hibernate.dialect.DB2390Dialect" />
</map>
</property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory">
<ref bean="TMISessionFactory" />
</property>
</bean>
</beans>
文件道:
/*
* Created on Oct 9, 2009
*/
package cat.edis.tmiweb.dao;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
import cat.edis.tmiweb.business.File;
/**
* @author dudekta
*
*/
public class FileDAOImpl extends HibernateDaoSupport implements FileDAO {
/**
*
* @param id
* @return
*/
public File load(Long id) {
return (File) getHibernateTemplate().get(File.class, id);
}
/**
*
* @param file
* @return
*/
public void save(File file) {
getHibernateTemplate().save(file);
}
}
我的测试:
public void testSaveBlob() {
FileDAO fileDAO =(FileDAO)SpringTestInitializer.getContext().getBean("fileDAO");
File file = new File();
file.setName("TestMe");
file.setType("txt");
file.setCreationTimeStamp(new Date());
file.setDescription("idc");
byte[] testBytes = new byte[1024];
byte byteValue = 1;
for (int i = 0; i < testBytes.length; i++) {
testBytes[i] = byteValue;
}
file.setLength(new Long(testBytes.length));
file.setContent(testBytes);
fileDAO.save(file);
File dbFile = fileDAO.load(file.getId());
assertNotNull(file);
}
从 Hibernate 输出到控制台:
Initializing Spring....
Spring test context created....
Hibernate: insert into N4GK001$.FILE (gen_file_id, crte_ts, file_nm, file_typ_desc, file_desc, file_lgth, file_cntnt) values (default, ?, ?, ?, ?, ?, ?)
Hibernate: select identity_val_local() from sysibm.sysdummy1
Hibernate: update N4GK001$.FILE set crte_ts=?, file_nm=?, file_typ_desc=?, file_desc=?, file_lgth=?, file_cntnt=? where gen_file_id=?
跟踪:
org.springframework.dao.DataIntegrityViolationException: could not update: [cat.edis.tmiweb.business.File#0]; nested exception is org.hibernate.exception.DataException: could not update: [cat.edis.tmiweb.business.File#0] at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:639) at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:412) at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:424) at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374) at org.springframework.orm.hibernate3.HibernateTemplate.save(HibernateTemplate.java:694) at cat.edis.tmiweb.dao.FileDAOImpl.save(FileDAOImpl.java:31) at cat.edis.tmiweb.dao.FileDAOImplTest.testSaveBlob(FileDAOImplTest.java:50) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:85) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:58) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:60) at java.lang.reflect.Method.invoke(Method.java:391) at junit.framework.TestCase.runTest(TestCase.java:154) at org.jmock.core.VerifyingTestCase.runBare(VerifyingTestCase.java:39) at junit.framework.TestResult$1.protect(TestResult.java:106) at junit.framework.TestResult.runProtected(TestResult.java:124) at junit.framework.TestResult.run(TestResult.java:109) at junit.framework.TestCase.run(TestCase.java:118) at junit.framework.TestSuite.runTest(TestSuite.java:208) at junit.framework.TestSuite.run(TestSuite.java:203) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:436) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:311) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192) Caused by: org.hibernate.exception.DataException: could not update: [cat.edis.tmiweb.business.File#0] at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:77) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2430) at org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:2312) at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2612) at org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:96) at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:279) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:263) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:168) at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298) at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27) at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000) at org.springframework.orm.hibernate3.HibernateAccessor.flushIfNecessary(HibernateAccessor.java:390) at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:420) ... 20 more Caused by: COM.ibm.db2.jdbc.DB2Exception: [IBM][CLI Driver][DB2] SQL0100W No row was found for FETCH, UPDATE or DELETE; or the result of a query is an empty table. SQLSTATE=02000
at COM.ibm.db2.jdbc.app.SQLExceptionGenerator.throw_SQLException(Unknown Source) at COM.ibm.db2.jdbc.app.SQLExceptionGenerator.throw_SQLException(Unknown Source) at COM.ibm.db2.jdbc.app.SQLExceptionGenerator.check_return_code(Unknown Source) at COM.ibm.db2.jdbc.app.DB2PreparedStatement.loadParameters(Unknown Source) at COM.ibm.db2.jdbc.app.DB2PreparedStatement.execute2(Unknown Source) at COM.ibm.db2.jdbc.app.DB2PreparedStatement.executeUpdate(Unknown Source) at cat.cis.tuf.server.connector.jdbc.v1.JDBCv1DBStatement.executeUpdate(JDBCv1DBStatement.java:206) at org.hibernate.jdbc.NonBatchingBatcher.addToBatch(NonBatchingBatcher.java:23) at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2408) ... 31 more
异常对象:
ex= DataException (id=341)
backtrace= Object[35] (id=349)
cause (NestableRuntimeException)= DB2Exception (id=325)
cause (Throwable)= DataException (id=341)
delegate= NestableDelegate (id=350)
detailMessage= "could not update: [cat.edis.tmiweb.business.File#0]"
sql= "update N4GK001$.FILE set crte_ts=?, file_nm=?, file_typ_desc=?, file_desc=?, file_lgth=?, file_cntnt=? where gen_file_id=?"
sqle= DB2Exception (id=325)
stackTrace= null
**
切换到 type 4 驱动程序:(仍在使用 org.hibernate.dialect.DB2390Dialect)
新错误! **\
org.springframework.orm.hibernate3.HibernateOptimisticLockingFailureException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1; nested exception is org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1
at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:672)
at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:412)
at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:424)
at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
at org.springframework.orm.hibernate3.HibernateTemplate.save(HibernateTemplate.java:694)
at cat.edis.tmiweb.dao.FileDAOImpl.save(FileDAOImpl.java:31)
at cat.edis.tmiweb.dao.FileDAOImplTest.testSaveBlob(FileDAOImplTest.java:50)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:85)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:58)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:60)
at java.lang.reflect.Method.invoke(Method.java:391)
at junit.framework.TestCase.runTest(TestCase.java:154)
at org.jmock.core.VerifyingTestCase.runBare(VerifyingTestCase.java:39)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:436)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:311)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1
at org.hibernate.jdbc.Expectations$BasicExpectation.checkBatched(Expectations.java:61)
at org.hibernate.jdbc.Expectations$BasicExpectation.verifyOutcome(Expectations.java:46)
at org.hibernate.jdbc.NonBatchingBatcher.addToBatch(NonBatchingBatcher.java:24)
at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2408)
at org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:2312)
at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2612)
at org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:96)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:279)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:263)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:168)
at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
at org.springframework.orm.hibernate3.HibernateAccessor.flushIfNecessary(HibernateAccessor.java:390)
at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:420)
... 20 more
最佳答案
删除/注释掉
File dbFile = fileDAO.load(file.getId());
assertNotNull(file);
然后从头开始再次运行测试
关于java - hibernate 和 spring 持久性问题。可能的身份值(value)没有增加？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/1561543/