hibernate初学

Question

log4j:WARN No appenders could be found for logger (org.hibernate.cfg.Environment).
log4j:WARN Please initialize the log4j system properly.
Exception in thread "main" java.lang.ExceptionInInitializerError
at com.hjl.domain.Test.main(Test.java:14)
Caused by: org.hibernate.MappingException: invalid configuration
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1521)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1462)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1448)
at com.hjl.util.HibernateUtils.<clinit>(HibernateUtils.java:14)
... 1 more
Caused by: org.xml.sax.SAXParseException: The content of element type "session-factory" must match "(property*,mapping*,(class-cache|collection-cache)*,event*,listener*)".
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:131)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:384)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:318)
at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.handleEndElement(XMLDTDValidator.java:2017)
at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.endElement(XMLDTDValidator.java:901)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1774)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2930)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:140)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
at org.dom4j.io.SAXReader.read(SAXReader.java:465)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1518)
... 4 more

Answer 1

配置文件如下
<?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> <!-- 提供不同的方言 -->
<property name="dialect">
org.hibernate.dialect.MySQLDialect
</property> <!-- 数据库驱动 -->
　
<property name="connection.driver_class">
com.mysql.jdbc.Driver
</property>
<!-- 连接数据库的URL -->
　
<property name="connection.url">
jdbc:mysql://localhost:3306/test
</property> <!-- 连接数据库的用户名 -->
　
<property name="connection.username">root</property>
<!-- 连接数据库的密码 -->
　
<property name="connection.password">123456</property>
<!-- 是否输出hibernate操作数据库使用的SQL语句 -->
<property name="show_sql">true</property>
<!-- 根据需要自动生成、更新数据表 -->
<property name="hbm2ddl.auto">update</property>
<!-- 根据需要注册所有映射文件 -->
<mapping resource="com/hjl/domain/User.hbm.xml" />
    </session-factory>
</hibernate-configuration>===================================================<?xml version="1.0" ?>
<!DOCTYPE hibernate-mapping PUBLIC 
     "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
     "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.hjl.domain">
    <class name="User" table="User" >
        <id name="id" column="ID">          
            <generator class="native"/>         
        </id>
        <property name="name" type="string" column="NAME"/>
        <property name="paw" type="string" column="PAW"/>
    </class>
</hibernate-mapping>

Answer 2

Hibernate.cfg.xml有错，mapping应该放到property之后。

Answer 3

Hibernate.cfg.xml中把映射文件的配置放在property后面

Answer 4

请问一下，这个怎么解决的，我现在正在学Hibernate,也碰到了这个问题