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我试图构建一个Hibernate项目。 我的问题就像标题一样。我得到了一个由ant进程构建的hibernate mapping xml和 类。Hibernate hbm.xml id标记生成器属性不起作用
而且我还希望你看看我的配置文件dtd。在我的国家，很少有人使用这个框架，所以在这里没有太多的参考资料（我正在读一本2009年出版的书。它的目标是休眠3.X）
我将附加我的ant构建文件，config文件，映射文件，执行文件和错误日志。
这是我build.xml（蚂蚁）
<?xml version="1.0" encoding="UTF-8"?>
<project name="HibernateEx2" default="db" basedir="."
xmlns:artifact="antlib:org.apache.maven.artifact.ant">
<property name="source.root" value="src"/>
<property name="class.root" value="classpath"/>
<property name="data.dir" value="data"/>
<artifact:dependencies pathId="dependency.classpath">
<dependency groupId="hsqldb" artifactId="hsqldb" version="1.8.0.10"/>
<dependency groupId="org.hibernate" artifactId="hibernate-core" version="4.3.10.Final">
<exclusion groupId="javax.transaction" artifactId="jta"/>
</dependency>
<!-- 3.2.4.GA - After hibernate4 need upgrade hibernate-tools -->
<dependency groupId="org.hibernate" artifactId="hibernate-tools" version="4.3.1.CR1"/>
<dependency groupId="org.apache.geronimo.specs" artifactId="geronimo-jta_1.1_spec" version="1.1.1"/>
<!-- java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory -->
<dependency groupId="commons-logging" artifactId="commons-logging" version="1.2"/>
<dependency groupId="log4j" artifactId="log4j" version="1.2.17"/>
<!-- java.lang.NoClassDefFoundError: org/slf4j/impl/StaticLoggerBinder -->
<dependency groupId="org.slf4j" artifactId="slf4j-log4j12" version="1.7.12"/>
</artifact:dependencies>
<path id="project.class.path">
<pathelement location="${class.root}"/>
<path refid="dependency.classpath" />
</path>
<!-- Explaining how to use hibernate -->
<taskdef name="hibernatetool"
classname="org.hibernate.tool.ant.HibernateToolTask"
classpathref="project.class.path"/>
<target name="db" description="Run HSQLDB database management UI against the database file -- use when application is not running">
<java classname="org.hsqldb.util.DatabaseManager" fork="yes">
<classpath refid="project.class.path"/>
<arg value="-driver"/>
<arg value="org.hsqldb.jdbcDriver"/>
<arg value="-url"/>
<arg value="jdbc:hsqldb:${data.dir}/music/"/>
<arg value="-user"/>
<arg value="sa"/>
</java>
</target>
<target name="print-classpath" description="Show the dependency class path">
<property name="class.path" refid="dependency.classpath"/>
<echo>${class.path}</echo>
</target>
<!-- Generate java code -->
<target name="codegen" description="Generate Java source from the OR mapping files">
<hibernatetool destdir="${source.root}">
<configuration configurationfile="${source.root}/hibernate.cfg.xml"/>
<hbm2java/>
</hibernatetool>
</target>
<!-- Creating Sub drectories -->
<target name="prepare" description="Set up build structures">
<mkdir dir="${class.root}"/>
<copy todir="${class.root}">
<fileset dir="${source.root}">
<include name="**/*.properties"/>
<include name="**/*.xml"/>
</fileset>
</copy>
</target>
<!-- Creating Schema for mapping files -->
<target name="schema" depends="prepare" description="Generate DB schema from the OR mappinf files">
<hibernatetool destdir="${source.root}">
<configuration configurationfile="${source.root}/hibernate.cfg.xml"/>
<hbm2ddl drop="yes"/>
</hibernatetool>
</target>
<!-- Compile Java -->
<!-- added includeantruntime="false" to javac, since terminal compile warning -->
<target name="compile" depends="prepare" description="Compiles all java classes">
<javac srcdir="${source.root}" destdir="${class.root}"
debug="on" optimize="off" deprecation="on" includeantruntime="true">
<classpath refid="project.class.path"/>
</javac>
</target>
<target name="ctest" depends="compile" description="Creates and persists some sample data">
<java classname="org.owls.ht.CreateTest" fork="true">
<classpath refid="project.class.path"/>
</java>
</target>
<target name="qtest" description="Run a simple Hibernate query" depends="compile">
<java classname="org.owls.ht.QueryTest" fork="true">
<classpath refid="project.class.path"/>
</java>
</target>
</project>
Hibernate的配置文件hibernate.cfg.xml。它看起来非常可疑，使用3.0 DTD，而我的项目包括hibernate-core 4.3.10.final。
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration >
<session-factory>
<property name="dialect">org.hibernate.dialect.HSQLDialect</property>
<property name="connection.driver_class">org.hsqldb.jdbcDriver</property>
<property name="connection.url">jdbc:hsqldb:data/music</property>
<property name="connection.username">sa</property>
<property name="connection.password"></property>
<property name="connection.shutdown">true</property>
<!-- Connection Pool -->
<property name="connection.pool_size">1</property>
<!-- Hibernate Session Manager Activate -->
<property name="current_session_context_class">thread</property>
<!-- Unable Cache -->
<property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
<!-- Batch service unable -->
<property name="jdbc.batch_size">0</property>
<property name="show_sql">true</property>
<!-- Mapping documents -->
<mapping resource="org/owls/ht/data/Track.hbm.xml"/>
</session-factory>
</hibernate-configuration>
映射文件。我认为这id部分不起作用，尤其是<generator="native"/>部分。
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hiberbate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="org.owls.ht.data.Track" table="TRACK">
<meta attribute="class-description">
Playable Track list
@author juneyoungoh
</meta>
<id name="id" type="int" column="TRACK_ID">
<meta attribute="scope-set">protected</meta>
<generator class="native"/>
</id>
<property name="title" type="string" not-null="true"/>
<property name="filePath" type="string" not-null="true"/>
<property name="playTime" type="time">
<meta attribute="field-description">Duration</meta>
</property>
<property name="added" type="date">
<meta attribute="field-description">Created</meta>
</property>
<property name="volume" type="short" not-null="true">
<meta attribute="field-description">Volume</meta>
</property>
</class>
</hibernate-mapping>
这里是输出，Track.java
package org.owls.ht.data;
// Generated Jul 13, 2015 3:47:01 PM by Hibernate Tools 4.3.1
import java.util.Date;
/**
* Playable Track list
* @author juneyoungoh
*
*/
public class Track implements java.io.Serializable {
private int id;
private String title;
private String filePath;
/**
* Duration
*/
private Date playTime;
/**
* Created
*/
private Date added;
/**
* Volume
*/
private short volume;
public Track() {
}
public Track(String title, String filePath, short volume) {
this.title = title;
this.filePath = filePath;
this.volume = volume;
}
public Track(String title, String filePath, Date playTime, Date added, short volume) {
this.title = title;
this.filePath = filePath;
this.playTime = playTime;
this.added = added;
this.volume = volume;
}
public int getId() {
return this.id;
}
protected void setId(int id) {
this.id = id;
}
public String getTitle() {
return this.title;
}
public void setTitle(String title) {
this.title = title;
}
public String getFilePath() {
return this.filePath;
}
public void setFilePath(String filePath) {
this.filePath = filePath;
}
/**
* * Duration
*/
public Date getPlayTime() {
return this.playTime;
}
public void setPlayTime(Date playTime) {
this.playTime = playTime;
}
/**
* * Created
*/
public Date getAdded() {
return this.added;
}
public void setAdded(Date added) {
this.added = added;
}
/**
* * Volume
*/
public short getVolume() {
return this.volume;
}
public void setVolume(short volume) {
this.volume = volume;
}
}
，这是我测试的类，它包含main方法。
package org.owls.ht;
import java.sql.Time;
import java.util.Date;
import org.hibernate.*;
import org.hibernate.cfg.Configuration;
import org.owls.ht.data.Track;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.service.ServiceRegistry;
public class CreateTest {
private static Track makingTrack(String title, String filePath, Date playTime){
Track tmp = new Track(title, filePath, playTime, new Date(), (short)0);
return tmp;
}
public static void main(String[] args) throws Exception {
Configuration config = new Configuration();
config.configure();
ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(
config.getProperties()).build();
SessionFactory sessionFactory = config.buildSessionFactory(serviceRegistry);
Session session = sessionFactory.openSession();
Transaction tx = null;
try{
tx = session.beginTransaction();
session.save(makingTrack("Russian Trance"
, "vol2/album610/track02.mp3", Time.valueOf("00:03:30")));
session.save(makingTrack("Video Killed the Radio Star"
, "vol2/album611/track12.mp3", Time.valueOf("00:03:49")));
session.save(makingTrack("Gravity's Angel"
, "vol2/album175/track03.mp3", Time.valueOf("00:06:06")));
tx.commit();
} catch (Exception e){
if(tx != null) {
tx.rollback();
}
throw new Exception("Transaction failed", e);
} finally{
session.close();
}
sessionFactory.close();
}
};
// ===============================
终于来了！这是通过ant命令运行此代码时的错误消息。
Buildfile: /Users/juneyoungoh/Documents/workplaceJava1/HibernateEx3/build.xml
prepare:
compile:
[javac] Compiling 2 source files to /Users/juneyoungoh/Documents/workplaceJava1/HibernateEx3/classpath
ctest:
[java] 15:50:01,618 INFO Version:66 -HCANN000001: Hibernate Commons Annotations {4.0.5.Final}
[java] 15:50:01,643 INFO Version:54 -HHH000412: Hibernate Core {4.3.10.Final}
[java] 15:50:01,651 INFO Environment:224 -HHH000205: Loaded properties from resource hibernate.properties: {hibernate.connection.username=sa, hibernate.connection.password=****, hibernate.dialect=org.hibernate.dialect.HSQLDialect, hibernate.connection.shutdown=true, hibernate.connection.url=jdbc:hsqldb:data/music, hibernate.bytecode.use_reflection_optimizer=false, hibernate.connection.driver_class=org.hsqldb.jdbcDriver}
[java] 15:50:01,656 INFO Environment:346 -HHH000021: Bytecode provider name : javassist
[java] 15:50:01,693 INFO Configuration:2075 -HHH000043: Configuring from resource: /hibernate.cfg.xml
[java] 15:50:01,693 INFO Configuration:2094 -HHH000040: Configuration resource: /hibernate.cfg.xml
[java] 15:50:01,814 WARN DTDEntityResolver:75 -HHH000223: Recognized obsolete hibernate namespace http://hibernate.sourceforge.net/. Use namespace http://www.hibernate.org/dtd/ instead. Refer to Hibernate 3.6 Migration Guide!
[java] 15:50:01,882 INFO Configuration:759 -HHH000221: Reading mappings from resource: org/owls/ht/data/Track.hbm.xml
[java] 15:50:01,938 WARN DTDEntityResolver:75 -HHH000223: Recognized obsolete hibernate namespace http://hibernate.sourceforge.net/. Use namespace http://www.hibernate.org/dtd/ instead. Refer to Hibernate 3.6 Migration Guide!
[java] 15:50:02,004 INFO Configuration:2216 -HHH000041: Configured SessionFactory: null
[java] 15:50:02,190 WARN DriverManagerConnectionProviderImpl:93 -HHH000402: Using Hibernate built-in connection pool (not for production use!)
[java] 15:50:02,193 INFO DriverManagerConnectionProviderImpl:166 -HHH000401: using driver [org.hsqldb.jdbcDriver] at URL [jdbc:hsqldb:data/music]
[java] 15:50:02,194 INFO DriverManagerConnectionProviderImpl:175 -HHH000046: Connection properties: {user=sa, password=****, shutdown=true}
[java] 15:50:02,194 INFO DriverManagerConnectionProviderImpl:180 -HHH000006: Autocommit mode: false
[java] 15:50:02,196 INFO DriverManagerConnectionProviderImpl:102 -HHH000115: Hibernate connection pool size: 1 (min=1)
[java] 15:50:02,585 INFO Dialect:145 -HHH000400: Using dialect: org.hibernate.dialect.HSQLDialect
[java] 15:50:02,607 INFO LobCreatorBuilder:97 -HHH000423: Disabling contextual LOB creation as JDBC driver reported JDBC version [3] less than 4
[java] 15:50:02,700 INFO TransactionFactoryInitiator:62 -HHH000399: Using default transaction strategy (direct JDBC transactions)
[java] 15:50:02,705 INFO ASTQueryTranslatorFactory:47 -HHH000397: Using ASTQueryTranslatorFactory
[java] Exception in thread "main" java.lang.Exception: Transaction failed
[java] at org.owls.ht.CreateTest.main(CreateTest.java:50)
[java] Caused by: org.hibernate.exception.GenericJDBCException: could not prepare statement
[java] at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:54)
[java] at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126)
[java] at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:196)
[java] at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareStatement(StatementPreparerImpl.java:122)
[java] at org.hibernate.id.insert.AbstractSelectingDelegate.performInsert(AbstractSelectingDelegate.java:55)
[java] at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3032)
[java] at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3558)
[java] at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:98)
[java] at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:492)
[java] at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:197)
[java] at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:181)
[java] at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:216)
[java] at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:334)
[java] at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:289)
[java] at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:195)
[java] at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:126)
[java] at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:209)
[java] at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:55)
[java] at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:194)
[java] at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:49)
[java] at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)
[java] at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:715)
[java] at org.hibernate.internal.SessionImpl.save(SessionImpl.java:707)
[java] at org.hibernate.internal.SessionImpl.save(SessionImpl.java:702)
[java] at org.owls.ht.CreateTest.main(CreateTest.java:36)
[java] Caused by: java.sql.SQLException: This function is not supported
[java] at org.hsqldb.jdbc.Util.sqlException(Unknown Source)
[java] at org.hsqldb.jdbc.Util.notSupported(Unknown Source)
[java] at org.hsqldb.jdbc.jdbcConnection.prepareStatement(Unknown Source)
[java] at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$2.doPrepare(StatementPreparerImpl.java:124)
[java] at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:186)
[java] ... 22 more
[java] Hibernate: insert into TRACK (TRACK_ID, title, filePath, playTime, added, volume) values (null, ?, ?, ?, ?, ?)
[java] 15:50:03,322 WARN SqlExceptionHelper:144 -SQL Error: -20, SQLState: IM001
[java] 15:50:03,323 ERROR SqlExceptionHelper:146 -This function is not supported
有2个可疑部分给我。
- 在消息
[java] 15:50:02,004 INFO Configuration:2216 -HHH000041: Configured SessionFactory: null的中间。为什么会话工厂是空的？ [java] Hibernate: insert into TRACK (TRACK_ID, title, filePath, playTime, added, volume) values (null, ?, ?, ?, ?, ?)。看起来这个代码试图将空值放入ID字段。但是，因为我把<generator class="native"/>，它不应该为空。对？
感谢您的答案：d
包含此功能的异常不受支持。我不知道这可能是哪个函数，但我想它与你的序列生成器有关，因为它是空的。 – Kai
@ user714965感谢您的支持。但我仍然不知道这个代码正在寻找什么功能。我能提供哪些信息？ –