Error in tomcat but not in resin (caucho)

[Dionisio Ruiz de Zarate]

Why bellow code is error in tomcat?
this code runs well in resin.
there is any error?
thanks

code:


<%
response.setHeader("Cache-Control","no-cache");
response.setHeader("Pragma","no-cache");

String login= (String)session.getAttribute("login");
String usuario= (String)session.getAttribute("usuario");
if(usuario==null){usuario="";}
String passwd= (String)session.getAttribute("passwd");
if(passwd==null){passwd="";}
String nivelaccesoTmp= (String)session.getAttribute("nivelacceso");
int nivelacceso=Integer.parseInt(nivelaccesoTmp);

String nivelTmp= (String)session.getAttribute("nivel");
if(nivelTmp==null){nivelTmp="0";}
  if(Integer.parseInt(nivelTmp)< nivelacceso){
  String p=request.getParameter("pagina");
  String pp=request.getParameter("pagina");
  if(paginas==null){paginas="";}
   session.setAttribute("estado","0");
   session.setAttribute("nivel","0");
   session.setAttribute("error","3");
   session.setAttribute("login","0");
   response.sendRedirect("login.jsp?p="+pp + "&" +
request.getQueryString());
  }

if ((login==null)||(login.equals("0"))){
StringBuffer pagina=HttpUtils.getRequestURL(request);
String parametros = request.getQueryString();
response.sendRedirect ("login.jsp?p=" + p );
}

%>


ERROR:

Apache Tomcat/4.0.1 - HTTP Status 500 - Internal Server Error

----------------------------------------------------------------------------
----

type Exception report

message Internal Server Error

description The server encountered an internal error (Internal Server Error)
that prevented it from fulfilling this request.

exception

java.lang.IllegalStateException
        at
org.apache.catalina.connector.HttpResponseFacade.sendRedirect(HttpResponseFa
cade.java:173)
        at org.apache.jsp.index$jsp._jspService(index$jsp.java:1144)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.ja
va:202)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:382)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:474)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:247)
        at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:193)
        at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
va:243)
        at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
va:201)
        at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2344)
        at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164
)
        at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
        at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
java:170)
        at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
        at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170
)
        at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
:163)
        at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at
org.apache.catalina.connector.warp.WarpRequestHandler.handle(WarpRequestHand
ler.java:217)
        at
org.apache.catalina.connector.warp.WarpConnection.run(WarpConnection.java:19
4)
        at java.lang.Thread.run(Thread.java:484)





--
To unsubscribe, e-mail:   <mailto:[EMAIL PROTECTED]>
For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>