装free 版本的onlinejudge的时候出现下面的问题:::
该怎么解决呢??? 谢谢

Exception Occurred

  
Exception stack 
java.lang.NullPointerException
	at com.pku.judgeonline.common.FormattedOut.printHead(Unknown Source)
	at com.pku.judgeonline.servlet.Index.doGet(Unknown Source)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
	at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
	at java.lang.Thread.run(Unknown Source)

 Go Back  Contact Administrator

Welcome to JudgeOnline
  Problem Set is the place where you can find large amount of problems from different programming contests. Online Judge System allows you to test your solution for every problem.

  First of all, read carefully Frequently Asked Questions.
  Then, choose problem, solve it and submit it.

  If you want to publish your problems or setup your own online contest, just write us


  Designer: Ying Fuchen
  Developer:Xu Pengcheng   Ying Fuchen
 

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• Re:onlinejudge安装的问题 (2318) xiedi 2007-08-15 14:47:21
• Re:onlinejudge安装的问题 (2260) lybgy 2010-06-02 21:53:50
• Re:onlinejudge安装的问题 (2295) lybgy 2010-06-05 17:09:50