Struts数据源配置问题

Question

使用Tomcat5.5.15和struts-1.2.9,数据库是Microsoft Access2000,配置如下:
 
<struts-config>
<data-sources>
<data-source type="org.apache.commons.dbcp.BasicDataSource">
    <set-property
      property="driverClassName"
      value=" sun.jdbc.odbc.JdbcOdbcDriver" />
    <set-property
      property="url"
      value="jdbc:odbc:driver={Microsoft Access Driver (*.mdb)};DBQ=c:\\db1.mdb" />
    <set-property 
      property="username"
      value="administrator" />
    <set-property
      property="password"
      value="123" />
    <set-property
      property="maxActive" 
      value="10" />
    <set-property
      property="maxWait"
      value="5000" />
    <set-property
      property="defaultAutoCommit"
      value="false" /> 
    <set-property
      property="defaultReadOnly"
      value="false" />
</data-source>
</data-sources>
.....
<struts-config>
 
当启动Tomcat时产生如下错误:
New org.apache.commons.dbcp.BasicDataSource
Begin event threw exception
java.lang.ClassNotFoundException: org.apache.commons.dbcp.BasicDataSource
        at org.apache.catalina.loader.WebappClassLoader.loadClass (WebappClassLoader.java:1352)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1198)
        at java.lang.ClassLoader.loadClassInternal(Unknown Source)
        at java.lang.Class.forName0 (Native Method)
        at java.lang.Class.forName(Unknown Source)
        at org.apache.struts.digester.ObjectCreateRule.begin(ObjectCreateRule.java:152)
        at org.apache.struts.digester.Digester.startElement (Digester.java:528)
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.startElement(Unknown Source) 
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch (Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source) 
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
        at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse (Unknown Source)
        at javax.xml.parsers.SAXParser.parse(Unknown Source)
        at javax.xml.parsers.SAXParser.parse(Unknown Source)
        at org.apache.struts.digester.Digester.parse(Digester.java:755)
        at org.apache.struts.action.ActionServlet.initMapping(ActionServlet.java:1332)
        at org.apache.struts.action.ActionServlet.init(ActionServlet.java:466)
        at javax.servlet.GenericServlet.init(GenericServlet.java :211)
        at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1105)
        at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:932)
        at org.apache.catalina.core.StandardContext.loadOnStartup (StandardContext.java:3915)
        at org.apache.catalina.core.StandardContext.start(StandardContext.java:4176)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:759)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:739)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:524)        at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:910)
        at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:873)
        at org.apache.catalina.startup.HostConfig.deployApps (HostConfig.java:474)
        at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1118)
        at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:310)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent (LifecycleSupport.java:119)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1020)        at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1012)        at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)
        at org.apache.catalina.core.StandardService.start(StandardService.java:450)
        at org.apache.catalina.core.StandardServer.start (StandardServer.java:700)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:551)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke (Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java :275)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
2006-4-2 8:40:02 org.apache.coyote.http11.Http11BaseProtocol start我已经在控制面板－数据源中设置了ODBC，为什么还产生如上错误？