hbm2hbmxml不生成hibernate映射。

Question

我在每个地方都搜索这个，但是找不到这引用的ANT，并使用这作为教程编写一个ANT任务，将带有EJB3注释的POJO转换为hibernate映射文件(hmb.xml)。

我的构建在没有错误的情况下成功结束，但是我在目标目录或任何地方找不到任何hbm.xmk。

这是我使用的代码。

build.xml

<project basedir="." default="init" name="Test">

    <property name="sourcedir" value="${basedir}/src"/>
    <property name="targetdir" value="${basedir}/bin"/>
    <property name="librarydir" value="${basedir}/lib"/>

    <path id="libraries">
        <fileset dir="${librarydir}">
            <include name="*.jar"/>
        </fileset>
    </path>

    <target name="clean">
        <delete dir="${targetdir}"/>
        <mkdir dir="${targetdir}"/>
    </target>

    <target name="compile" depends="clean, copy-resources">
      <javac srcdir="${sourcedir}"
             destdir="${targetdir}"
             classpathref="libraries">
         <compilerarg value="-Xlint"/>
      </javac>
    </target>

    <target name="copy-resources">
        <copy todir="${targetdir}">
            <fileset dir="${sourcedir}">
                <exclude name="**/*.java"/>
                <include name="**/*.xml"/>
                <include name="**/*.properties"/>
            </fileset>
        </copy>
    </target>

    <target name="run" depends="compile">
        <java fork="true" classname="uk.co.pookey.hibernate.HibernateUtil" classpathref="libraries">
            <classpath path="${targetdir}"/>
            <arg value="${action}"/>
        </java>
    </target>

<taskdef name="hibernatetool" classname="org.hibernate.tool.ant.HibernateToolTask" classpathref="libraries" />


<target name="init" depends="clean, compile">
    <hibernatetool  destdir="${targetdir}">
        <classpath>
            <!-- it is in this classpath you put your classes dir, and/or jpa persistence compliant jar -->
            <path location="${basedir}/bin" />
        </classpath>
        <annotationconfiguration configurationfile="${basedir}/src/hibernate.cfg.xml" propertyfile="${basedir}/src/hibernate.properties"/>
        <hbm2dao destdir="${targetdir}"/>           
    </hibernatetool>
</target>

​

POJO - Blog.java

import java.util.Date;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;


@Entity
@Table(name="blog")
public class Blog {

    @Id
    @Column(name="id")
  private Long id;

    @Column(name="subject")
  private String subject;

    @Column(name="body")
  private String body;

    @Column(name="creatdate")
  private Date createdAt;

  public Long getId() {
    return id;
  }

  public void setId(Long id) {
    this.id = id;
  }


  public String getSubject() {
    return subject;
  }

  public void setSubject(String subject) {
    this.subject = subject;
  }


  public String getBody() {
    return body;
  }

  public void setBody(String body) {
    this.body = body;
  }


  public Date getCreatedAt() {
    return createdAt;
  }

  public void setCreatedAt(Date createdAt) {
    this.createdAt = createdAt;
  }
}

输出

    init:
[hibernatetool] Executing Hibernate Tool with a Hibernate Annotation/EJB3 Configuration
[hibernatetool] 1. task: hbm2dao (Generates a set of DAOs)
[hibernatetool] 118 [main] INFO org.hibernate.annotations.common.Version - Hibernate Commons Annotations 3.2.0.Final
[hibernatetool] 123 [main] INFO org.hibernate.cfg.Environment - Hibernate 3.6.6.Final
[hibernatetool] 125 [main] INFO org.hibernate.cfg.Environment - loaded properties from resource hibernate.properties: {hibernate.connection.username=root, hibernate.connection.password=****, hibernate.dialect=org.hibernate.dialect.MySQLDialect, hibernate.show_sql=false, hibernate.connection.url=jdbc:mysql://localhost:3306/sahan, hibernate.bytecode.use_reflection_optimizer=false, hibernate.connection.driver_class=com.mysql.jdbc.Driver}
[hibernatetool] 127 [main] INFO org.hibernate.cfg.Environment - Bytecode provider name : javassist
[hibernatetool] 132 [main] INFO org.hibernate.cfg.Environment - using JDK 1.4 java.sql.Timestamp handling
[hibernatetool] 226 [main] INFO org.hibernate.cfg.Configuration - configuring from file: hibernate.cfg.xml
[hibernatetool] 308 [main] INFO org.hibernate.cfg.Configuration - Configured SessionFactory: java:hibernate/SessionFactory
[hibernatetool] 340 [main] INFO org.hibernate.cfg.Configuration - Hibernate Validator not found: ignoring
[hibernatetool] Jul 29, 2011 2:55:16 PM org.hibernate.tool.Version <clinit>
[hibernatetool] INFO: Hibernate Tools 3.2.4.GA

我使用的Jar文件是

commons-logging-1.0.4.jar
dom4j-1.6.1.jar
ejb3-persistence.jar
freemarker-2.3.1.jar
hibernate-tools-3.2.4.GA.jar
hibernate3.jar
javassist-3.12.0.GA.jar
mysql-connector-java-5.0.8-bin.jar
slf4j-api-1.5.8.jar
slf4j-simple-1.5.8.jar

请帮助我，这个任务没有多少教程或工作示例示例代码，特别是用于使用注释s配置从POJO生成hbm文件的示例代码。

Answer 1

为什么要将注释转换为XML配置？许多EJB3注释具有直接的Hibernate等价物，或者实际上使用相同的注释(javax.persistence.*)。我只想设置您的项目，以编译针对Hibernate，看看什么会爆炸，修复它们，并继续前进。那么您就不需要使用XML文件了。

Answer 2

好的，我找到了原因:我没有在hibernate.cfg.xml文件中添加到类的映射

以前是

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
<session-factory>
  <property name="hibernate.connection.driver_class">
com.mysql.jdbc.Driver</property>

  <property name="hibernate.connection.url">
jdbc:mysql://localhost/hibernatetutorial</property>
  <property name="hibernate.connection.username">root</property>
  <property name="hibernate.connection.password"></property>
  <property name="hibernate.connection.pool_size">1</property>
  <property name="hibernate.session_factory_name">jndi/composite/name</property>
  <property name="show_sql">true</property>
  <property name="dialect">org.hibernate.dialect.MySQLDialect</property>

 </session-factory>
</hibernate-configuration>

但它应该是

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
<session-factory>
  <property name="hibernate.connection.driver_class">
com.mysql.jdbc.Driver</property>

  <property name="hibernate.connection.url">
jdbc:mysql://localhost/hibernatetutorial</property>
  <property name="hibernate.connection.username">root</property>
  <property name="hibernate.connection.password"></property>
  <property name="hibernate.connection.pool_size">1</property>
  <property name="hibernate.session_factory_name">jndi/composite/name</property>
  <property name="show_sql">true</property>
  <property name="dialect">org.hibernate.dialect.MySQLDialect</property>

  <!-- Mapping files of the class should go here  -->
  <mapping class="Blog"/>

 </session-factory>
</hibernate-configuration>

缺少的是"“部分，现在它生成Blog.hbm.xml文件。