[求助]tomcat启动错误

大家好啊
我用struts弄东西时,启动tomcat时出现这个错误,请指教
2006-8-15 23:59:35 org.apache.struts.util.PropertyMessageResources <init>
信息: Initializing, config='resources.application', returnNull=true
2006-8-15 23:59:36 org.apache.struts.action.ActionServlet initModuleDataSources
严重: Initializing application data source dataconnection
org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFact
ory (Access denied for user 'root'@'localhost' (using password: NO))
at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSou
rce.java:855)
at org.apache.commons.dbcp.BasicDataSource.setLogWriter(BasicDataSource.
java:598)
at org.apache.struts.action.ActionServlet.initModuleDataSources(ActionSe
rvlet.java:1087)
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:472)
at javax.servlet.GenericServlet.init(GenericServlet.java:211)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.
java:1029)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:86
2)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContex
t.java:4013)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4
357)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase
.java:823)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:80
7)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:595)

at org.apache.catalina.core.StandardHostDeployer.install(StandardHostDep
loyer.java:277)
at org.apache.catalina.core.StandardHost.install(StandardHost.java:832)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.j
ava:701)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:432
)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:983)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java
:349)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(Lifecycl
eSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1091)

at org.apache.catalina.core.StandardHost.start(StandardHost.java:789)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083)