java.lang.IndexOutOfBoundsException: Index: 0, Size: 0

2010-2-7 20:56:01 org.apache.catalina.core.StandardWrapperValve invoke严重: Servlet.service() for servlet ConnectorServlet threw exceptionjava.lang.IndexOutOfBoundsException: Index: 0, Size: 0    at java.util.ArrayList.RangeCheck(ArrayList.java:547)    at java.util.ArrayList.get(ArrayList.java:322)    at net.fckeditor.connector.Dispatcher.doPost(Dispatcher.java:255)    at net.fckeditor.connector.ConnectorServlet.doPost(ConnectorServlet.java:128)    at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:88)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)    at java.lang.Thread.run(Thread.java:619)