Headless Client Error

ngervasi · March 23, 2006, 9:33am

This simple HC call works like a charm in my developer and in my test server but not in my production server, am I missing something or is this a bug?
This is the jsp, it simply calls a form method in a solution and returns some HTML as output:

<%@ page import = "java.util.*" %> 
<%@ page import = "com.servoy.j2db.server.headlessclient.*" %> 
<%@ page import = "com.servoy.j2db.dataprocessing.IDataSet" %> 
<%@ page errorPage="errorpage.jsp" %> 
<% 
   ISessionBean servoy_hc = (ISessionBean)session.getAttribute("servoy"); 
   if (servoy_hc == null) 
   { 
      servoy_hc = HeadlessClientFactory.createSessionBean(request,"SprintEngine","nick","nick_passwd"); 
      session.setAttribute("servoy",servoy_hc); 
   } 
   boolean ok = servoy_hc.setMainForm("Magazzino");
   
   if (!ok)
	{
		out.print("error cannot work on required form");
		return;
	}

%>
<% 
    String result="";
    
    result= (String)servoy_hc.executeMethod(null,"hcGeneraMappa",null);
    
    out.println(result);
    
    session.setAttribute("servoy", null);
%>

And this is the error in the production server:

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

javax.servlet.ServletException: sun/tools/javac/Main
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:484)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
	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.java:201)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
	at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
	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:566)
	at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:462)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
	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:566)
	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.http.HttpProcessor.process(HttpProcessor.java:1011)
	at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1106)
	at java.lang.Thread.run(Thread.java:534)
root cause

java.lang.NoClassDefFoundError: sun/tools/javac/Main
	at org.apache.jasper.compiler.SunJavaCompiler.compile(SunJavaCompiler.java:128)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:271)
	at org.apache.jasper.servlet.JspServlet.loadJSP(JspServlet.java:546)
	at org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary(JspServlet.java:177)
	at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:189)
	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(ApplicationFilterChain.java:247)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
	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.java:201)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
	at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
	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:566)
	at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:462)
	at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
	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:566)
	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.http.HttpProcessor.process(HttpProcessor.java:1011)
	at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1106)
	at java.lang.Thread.run(Thread.java:534)

Works fine in developer: MacOS X, java 1.5.0_05-48, Servoy 2.2.4_02
Works fine in test-server: MacOS X, java 1.5.0_05-48, Servoy 2.2.4_02
Doesn’t work in prduction server: Suse Linux 8.0, java 1.4.2_10-b03, Servoy 2.2.4_02

Jan_Aleman · March 23, 2006, 10:00am

add tools.jar (somewhere in your JDK dir) to your classpath (in servoy_server.sh)

Harjo · March 23, 2006, 10:01am

Hi Nicola,

you did’nt install the tool.jar on your production server!

ngervasi · March 23, 2006, 10:19am

HJK:
Hi Nicola,

you did’nt install the tool.jar on your production server!

Shouldn’t be in the default Java 1.4 install?

Harjo · March 23, 2006, 10:22am

No, the tools.jar you can only find that one in the JDK version. of your JDK.
So use the tools.jar, of the java version you using!.

ngervasi · March 23, 2006, 10:26am

HJK:
No, the tools.jar you can only find that one in the JDK version. of your JDK.
So use the tools.jar, of the java version you using!.

Weird… in my MacOS X installs I don’t need to modify the servoy_server.sh.
In the production (linux) server i changed the file as follows:

java -Djava.awt.headless=true -classpath .:$JAVA_HOME/lib/tools.jar:lib/commons-collections.jar: etc etc

With $JAVA_HOME that points to my current java installation dir.
Is it okay?

Jan_Aleman · March 23, 2006, 10:27am

ngervasi:
With $JAVA_HOME that points to my current java installation dir.
Is it okay?

perfect

ngervasi · March 24, 2006, 11:16am

jaleman:

ngervasi:
With $JAVA_HOME that points to my current java installation dir.
Is it okay?

perfect

Strange… now everything works fine but everytime I call my HC jsp page I get this error in the log:

2006-03-23 19:46 : Error occured informing client plugin udp, error: java.lang.NullPointerException

I don’t use the udp plugin… what’s happening?

Harjo · March 24, 2006, 11:19am

I see that too! not only in webclient.
also close a normal (localhost) smartclient

Than you will see this message also.

pbakker · March 24, 2006, 11:56am

Yep, I saw the error of the UDP plugin as well, allthough I do not use it anywhere.

Paul

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