刚接触HIBERNATE碰到的问题，郁闷，帮帮忙

Question

Exception in thread "main" java.lang.IllegalAccessError: tried to access method org.apache.log4j.Logger.<init>(Ljava/lang/String;)V from class org.apache.log4j.spi.RootLogger
at org.apache.log4j.spi.RootLogger.<init>(RootLogger.java:43)
at org.apache.log4j.LogManager.<clinit>(LogManager.java:78)
at org.slf4j.impl.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:73)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:103)
at org.hibernate.cfg.Configuration.<clinit>(Configuration.java:151)
at cn.itcast.hibernate.Base.main(Base.java:15)包都引进了

Answer 1

是不是包引重复了
还有是不是log4j中的配置没有配对啊

Answer 2

又出现新错误帮忙看看，谢了
- Hibernate 3.0.5
- hibernate.properties not found
- using CGLIB reflection optimizer
- using JDK 1.4 java.sql.Timestamp handling
- configuring from resource: /hibernate.cfg.xml
- Configuration resource: /hibernate.cfg.xml
- Mapping resource: cn/itcast/hibernate/domain/User.hbm.xml
- Error parsing XML: XML InputStream(1) Document is invalid: no grammar found.
- Error parsing XML: XML InputStream(1) Document root element "hibernate-mapping", must match DOCTYPE root "null".
Exception in thread "main" org.hibernate.MappingException: Error reading resource: cn/itcast/hibernate/domain/User.hbm.xml
at org.hibernate.cfg.Configuration.addResource(Configuration.java:452)
at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1263)
at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1235)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1217)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1184)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1112)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1098)
at cn.itcast.hibernate.Base.main(Base.java:16)
Caused by: org.hibernate.MappingException: invalid mapping
at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:399)
at org.hibernate.cfg.Configuration.addResource(Configuration.java:449)
... 7 more
Caused by: org.xml.sax.SAXParseException: Document is invalid: no grammar found.
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.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl$NSContentDispatcher.scanRootElementHook(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$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:398)
... 8 more

Answer 3

hibernate的配置文件没配置还是配置错了吧