在jbuilder2005环境下配置数据源时出现错误

现在报的异常是：
org.apache.commons.digester.Digester startElement
严重: Begin event threw exception
java.lang.ClassNotFoundException: org.apache.coyote.tomcat4.CoyoteConnector
at org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:854)
at org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:721)
at org.apache.commons.digester.ObjectCreateRule.begin(ObjectCreateRule.java:252)
at org.apache.commons.digester.Rule.begin(Rule.java:200)
at org.apache.commons.digester.Digester.startElement(Digester.java:1273)
at org.apache.catalina.util.CatalinaDigester.startElement(CatalinaDigester.java:65)
at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)
at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(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.apache.commons.digester.Digester.parse(Digester.java:1548)
at org.apache.catalina.startup.Catalina.load(Catalina.java:489)
at org.apache.catalina.startup.Catalina.load(Catalina.java:528)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:247)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:421)
Catalina.start using C:\Documents and Settings\Administrator\jbproject\music\Tomcat\conf\server8080.xml: java.lang.ClassNotFoundException: org.apache.coyote.tomcat4.CoyoteConnector
java.lang.ClassNotFoundException: org.apache.coyote.tomcat4.CoyoteConnector