錯誤信息：
log4j:WARN No appenders could be found for logger (org.hibernate.cfg.Environment).
log4j:WARN Please initialize the log4j system properly.
org.hibernate.InvalidMappingException: Could not parse mapping document from resource test/hibernate/Product.hbm.xml
at org.hibernate.cfg.Configuration.addResource(Configuration.java:575)
at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1593)
at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1561)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1540)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1514)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1434)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1420)
at test.hibernate.HibernateTest.main(HibernateTest.java:19)
Caused by: org.hibernate.InvalidMappingException: Could not parse mapping document from invalid mapping
at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:508)
at org.hibernate.cfg.Configuration.addResource(Configuration.java:572)
... 7 more
Caused by: org.xml.sax.SAXParseException: The content of element type "id" must match "(meta*,column*,type?,generator?)".
at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
at org.apache.xerces.util.ErrorHandlerWrapper.error(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.dtd.XMLDTDValidator.handleEndElement(Unknown Source)
at org.apache.xerces.impl.dtd.XMLDTDValidator.endElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.dom4j.io.SAXReader.read(SAXReader.java:465)
at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:505)
... 8 more
糾結了半天終於解決了 和大家分享一下出現這種情況的解決方案
大家請看我的hibernate.cfg.xml文件
<?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>
<!-- 數據庫URL -->
<property name="connection.url">
jdbc:mysql://localhost:3306/javaweb
</property>
<!-- 數據庫驅動類 -->
<property name="connection.driver_class">
com.mysql.jdbc.Driver
</property>
<!-- 數據庫用戶名 -->
<property name="connection.username">
root
</property>
<!-- 數據庫用戶密碼 -->
<property name="connection.password">
123
</property>
<!-- 數據庫方言 -->
<property name="dialect">
org.hibernate.dialect.MySQLDialect
</property>
<!-- 指定映射文件 -->
<mapping resource="com/xzit/hibernate/Product.hbm.xml"/>
</session-factory>
</hibernate-configuration>
再看一下我錯誤的Product.hbm.xml文件
<?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-mapping>
<class name="com.xzit.hibernate.Product">
<id name="id">
<generator class="assigned"></generator>
</id>
<property name="name"></property>
<property name="price"></property>
</class>
</hibernate-mapping>
兩者有顏色的區域是不是一模一樣呢 對了 這就是問題所在
應該將Product.hbm.xml中的改成下面的
<!DOCTYPE hibernate-mapping
PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">