title: "javax.servlet.ServletException: non-HTTP request or response" in JBoss
body: <p>My jboss is throwing undescriptive error while trying to run my application (spring mvc). It deploys ok, and this exception doesn't tell me anything useful so I don't really know what to do. I can't debug , can't do anything really :</p>
  
  <pre>
      13:00:01,262 INFO  [ServerImpl] JBoss (Microcontainer) [5.1.0.GA (build: SVNTag=JBoss_5_1_0_GA date=200905221053)] Started in 2m:13s:790ms
  
  **Started successfully**
  </pre>
  
  <p>While running the application from the browser this happens :</p>
  
  <pre><code>13:00:09,456 ERROR [[appServlet]] Servlet.service() for servlet appServlet threw exception
  javax.servlet.ServletException: non-HTTP request or response
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:818)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
      at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
      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:235)
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
      at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
      at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
      at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
      at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
      at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
      at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
      at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
      at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
      at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
      at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
      at java.lang.Thread.run(Thread.java:619)
  </code></pre>