hibernate异常整理

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在研究hibernate，在配置jar测试简单的增删改时，出错，

1. 这个是hibernate.cfg.xml中的<mapping resource="com/hibernate/dm/pojo/Login.hbm.xml"/>这句写错了，并且*hbm.xml中的<class name="com.hibernate.dm.pojo.Login" table="Login">name属性写错。

Exception in thread "main" java.lang.ExceptionInInitializerError
   at com.hibernate.dao.LoginDao.save(LoginDao.java:15)
   at com.hibernate.action.Test.main(Test.java:20)
Caused by: org.hibernate.InvalidMappingException: Could not parse mapping document from resource com/hibernate/dm/pojo/Login.hbm.xml
   at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXml(Configuration.java:4009)
   at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXmlQueue(Configuration.java:3998)
   at org.hibernate.cfg.Configuration$MetadataSourceQueue.processMetadata(Configuration.java:3986)
   at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1398)
   at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1856)
   at com.hibernate.dm.util.HibernateUtil.<clinit>(HibernateUtil.java:36)
   ... 2 more
Caused by: org.hibernate.MappingException: class com.hibernate.dm.pojo not found while looking for property: uname
   at org.hibernate.util.ReflectHelper.reflectedPropertyClass(ReflectHelper.java:232)
   at org.hibernate.mapping.SimpleValue.setTypeUsingReflection(SimpleValue.java:316)
   at org.hibernate.cfg.HbmBinder.bindSimpleId(HbmBinder.java:454)
   at org.hibernate.cfg.HbmBinder.bindRootPersistentClassCommonValues(HbmBinder.java:387)
   at org.hibernate.cfg.HbmBinder.bindRootClass(HbmBinder.java:326)
   at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:177)
   at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXml(Configuration.java:4006)
   ... 7 more
Caused by: java.lang.ClassNotFoundException: com.hibernate.dm.pojo
   at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
   at java.security.AccessController.doPrivileged(Native Method)
   at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
   at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
   at java.lang.Class.forName0(Native Method)
   at java.lang.Class.forName(Class.java:171)
   at org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:192)
   at org.hibernate.util.ReflectHelper.reflectedPropertyClass(ReflectHelper.java:228)

2.这个是缺少hibernate.cfg.xml的<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
头部声明

Exception in thread "main" java.lang.ExceptionInInitializerError
   at com.hibernate.dao.LoginDao.save(LoginDao.java:15)
   at com.hibernate.action.Test.main(Test.java:20)
Caused by: org.hibernate.MappingException: invalid configuration
   at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2241)
   at org.hibernate.cfg.Configuration.configure(Configuration.java:2158)
   at org.hibernate.cfg.Configuration.configure(Configuration.java:2137)
   at com.hibernate.dm.util.HibernateUtil.<clinit>(HibernateUtil.java:35)
   ... 2 more
Caused by: org.xml.sax.SAXParseException: Document is invalid: no grammar found.
   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.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:250)
   at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl$NSContentDriver.scanRootElementHook(XMLNSDocumentScannerImpl.java:626)
   at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3104)
   at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:921)
   at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:647)
   at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:140)
   at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)
   at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
   at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
   at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
   at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
   at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
   at org.dom4j.io.SAXReader.read(SAXReader.java:465)
   at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2238)
   ... 5 more

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