Jakarta-Tomcat Problem

[Timothy G.]

Hey Everyone,

Since someone mentioned that Jakarta-Tomcat questions were ok here, I
thought I'd ask one. I have the following setup:

Mandrake 8.0
KDE 2.1.2
Apache-1.3.12
Blackdown Java-1.3.0
Jakarta-Tomcat- 3.2.1

I've followed the installation instructions of Tomcat (well, tried my best
to). The initial Tomcat homepage works great. But when I go to the
Servlet or JSP examples I get the following error (This error is specific
to the first link in the JSP examples section.):

Error: 500

Location: /examples/jsp/num/numguess.jsp

Internal Servlet Error:

javax.servlet.ServletException: sun/tools/javac/Main
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:399)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
at org.apache.tomcat.core.Handler.service(Handler.java:286)
at
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:210)
at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
at java.lang.Thread.run(Thread.java:484)

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:245)
at
org.apache.jasper.servlet.JspServlet.doLoadJSP(JspServlet.java:462)
at
org.apache.jasper.servlet.JasperLoader12.loadJSP(JasperLoader12.java:146)
at org.apache.jasper.servlet.JspServlet.loadJSP(JspServlet.java:433)
at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary(JspServlet.java:152)
at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:164)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:318)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:391)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
at org.apache.tomcat.core.Handler.service(Handler.java:286)
at
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:210)
at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
at java.lang.Thread.run(Thread.java:484)

Anyone got any ideas?

Thanks,

Tim

[isaacs]

Tim,

The exception has to do with Tomcat not being able to find
tools.jar. That is where the class ("sun/tools/javac/Main") is. The jsp page
has to be compiled into a servlet.

tools.jar needs to be on your classpath. Also, check to see if your
$JAVA_HOME environment variable is set correctly. tools.jar should be
found here: $JAVA_HOME/lib

Hope this helps.

--Isaac Sparrow