2013-12-5 11:15:46 org.apache.catalina.core.StandardWrapperValve invoke

严重: Servlet.service() for servlet [jsp] in context with path [/module-linkman] threw exception [javax.servlet.ServletException: java.lang.NullPointerException] with root cause

java.lang.NullPointerException

	at org.apache.tomcat.util.http.parser.HttpParser.parseMediaType(HttpParser.java:217)

	at org.apache.tomcat.util.http.parser.MediaTypeCache.parse(MediaTypeCache.java:54)

	at org.apache.catalina.connector.Response.setContentType(Response.java:805)

	at org.apache.catalina.connector.ResponseFacade.setContentType(ResponseFacade.java:245)

	at org.apache.jsp.pages.sgllinkman.addSglGroup_jsp._jspService(addSglGroup_jsp.java:61)

	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)

	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)

	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)

	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

	at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:88)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

	at com.chinaboxun.module.linkman.filter.SessionFilter.doFilter(SessionFilter.java:101)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)

	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)

	at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:314)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)

	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)

	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)

	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)

	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)

	at java.ut