Openfire Error.log

2011.12.19 11:04:01 内部服务器错误

org.jivesoftware.openfire.auth.UnauthorizedException: org.jivesoftware.openfire.user.UserNotFoundException

at org.jivesoftware.openfire.handler.IQRosterHandler.manageRoster(IQRosterHandler. java:251)

at org.jivesoftware.openfire.handler.IQRosterHandler.handleIQ(IQRosterHandler.java :122)

at org.jivesoftware.openfire.handler.IQHandler.process(IQHandler.java:65)

at org.jivesoftware.openfire.IQRouter.handle(IQRouter.java:372)

at org.jivesoftware.openfire.IQRouter.route(IQRouter.java:121)

at org.jivesoftware.openfire.spi.PacketRouterImpl.route(PacketRouterImpl.java:76)

at org.jivesoftware.openfire.net.StanzaHandler.processIQ(StanzaHandler.java:337)

at org.jivesoftware.openfire.net.ClientStanzaHandler.processIQ(ClientStanzaHandler .java:93)

at org.jivesoftware.openfire.net.StanzaHandler.process(StanzaHandler.java:302)

at org.jivesoftware.openfire.net.StanzaHandler.process(StanzaHandler.java:194)

at org.jivesoftware.openfire.nio.ConnectionHandler.messageReceived(ConnectionHandl er.java:169)

at org.apache.mina.common.support.AbstractIoFilterChain$TailFilter.messageReceived (AbstractIoFilterChain.java:570)

at org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(Ab stractIoFilterChain.java:299)

at org.apache.mina.common.support.AbstractIoFilterChain.access$1100(AbstractIoFilt erChain.java:53)

at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceive d(AbstractIoFilterChain.java:648)

at org.apache.mina.common.IoFilterAdapter.messageReceived(IoFilterAdapter.java:80)

at org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(Ab stractIoFilterChain.java:299)

at org.apache.mina.common.support.AbstractIoFilterChain.access$1100(AbstractIoFilt erChain.java:53)

at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceive d(AbstractIoFilterChain.java:648)

at org.apache.mina.filter.codec.support.SimpleProtocolDecoderOutput.flush(SimplePr otocolDecoderOutput.java:58)

at org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecF ilter.java:185)

at org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(Ab stractIoFilterChain.java:299)

at org.apache.mina.common.support.AbstractIoFilterChain.access$1100(AbstractIoFilt erChain.java:53)

at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceive d(AbstractIoFilterChain.java:648)

at org.apache.mina.filter.executor.ExecutorFilter.processEvent(ExecutorFilter.java :239)

at org.apache.mina.filter.executor.ExecutorFilter$ProcessEventsRunnable.run(Execut orFilter.java:283)

at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)

at java.lang.Thread.run(Unknown Source)

Caused by: org.jivesoftware.openfire.user.UserNotFoundException

at org.jivesoftware.openfire.user.DefaultUserProvider.loadUser(DefaultUserProvider .java:113)

at org.jivesoftware.openfire.user.UserManager.getUser(UserManager.java:234)

at org.jivesoftware.openfire.handler.IQRosterHandler.manageRoster(IQRosterHandler. java:217)

… 29 more

What is the reason? Thanks!