a simply way.
don't set CATALINA_OPTS="-Dbuild.compiler.emacs=true"
restart tomcat and request a jsp page with a syntax error like following
BEGIN -----------------------
<% x = 10 %>
END ------------------------
jikes produce this error:
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: -1 in the jsp file: null
Generated servlet error:
[javac] Compiling 1 source file
[javac] Found 1 syntax error in
"/home/tfohrer/develop/Tomcat/4.1.17/jakarta-tomcat-4.0/dist/work/Standalone/localhost/_/jikes_jsp.java":
[javac] 43. x = 0
[javac] ^---^
[javac] *** Syntax: ";" inserted to complete ExpressionStatement
javac produce this error:
Generated servlet error:
[javac] Compiling 1 source file
/home/tfohrer/develop/Tomcat/4.1.17/jakarta-tomcat-4.0/dist/work/Standalone/localhost/_/jikes_jsp.java:43:
';' expected
x = 0
^
/home/tfohrer/develop/Tomcat/4.1.17/jakarta-tomcat-4.0/dist/work/Standalone/localhost/_/jikes_jsp.java:43:
cannot resolve symbol
symbol : variable x
location: class org.apache.jsp.jikes_jsp
x = 0
^
2 errors
On Thursday 19 December 2002 18:40, you wrote:
> Torsten,
>
> It looks like everything is working, I have set the logVerbosity level to
> debug, but I still can find out if it is actually using jikes or javac. Is
> there any way to check for sure?
>
> Here's all the log shows...
>
> JspEngine --> /index.jsp
> ServletPath: /index.jsp
> PathInfo: null
> RealPath: /pathtohost/httpdocs/index.jsp
> RequestURI: /index.jsp
> QueryString: null
> Request Params:
>
>
>
> Brandon
>
> -----Original Message-----
> From: Torsten Fohrer [mailto:[EMAIL PROTECTED]]
> Sent: Monday, December 16, 2002 6:13 PM
> To: Tomcat Users List
> Subject: Re: javac Memory Leak: STATUS request
>
>
>
> one question?
>
> your tomcat does run more than a day, so i assume that he is a production
> system.
>
> memory leak in javac is only affected, if you compile a jsp page.
> so?
> how many times, you change your jsp pages?
> if you don't change them, and memory usage increase.
> it is possible a memory leak in your application.
>
> here a simply howto to use jikes.
>
> 1. Install jikes
> 2. Changing conf/web.xml to following:
> <!-- If you wish to use Jikes to compile JSP
> -->
> <!-- Set the init parameter "compiler" to "jikes".
> -->
> <!-- the property "-Dbuild.compiler.emacs=true" when starting
> cat --
> <!-- by adding the above to your CATALINA_OPTS environment
> iable. --
> <!-- If you get an error reporting that jikes can't use UTF8
> encoding, -->
> <!-- try setting the init parameter "javaEncoding" to
> O-8859-1". -->
>
> <servlet>
> <servlet-name>jsp</servlet-name>
> <servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
> <init-param>
> <param-name>compiler</param-name>
> <param-value>jikes</param-value>
> </init-param>
> <init-param>
> <param-name>logVerbosityLevel</param-name>
> <param-value>WARNING</param-value>
> </init-param>
> <load-on-startup>3</load-on-startup>
> </servlet>
> 3. Define build.compiler as above noted
> 4. Setting a env variable named BOOTCLASSPATH to jre/lib/rt.jar
>
> cu Torsten fohrer
>
> On Tuesday 17 December 2002 01:06, you wrote:
> > Does anyone know how I can confirm that I am actually using jikes? I
> > have entered all the configuration required, but sometimes when I get
> > errors compiling, the output refers to javac still.
> >
> > It also seems like tomcat slowly takes more and more memory.
> >
> > Brandon
> >
> > -----Original Message-----
> > From: Jeremy Joslin [mailto:[EMAIL PROTECTED]]
> > Sent: Monday, December 16, 2002 4:56 PM
> > To: 'Tomcat Users List'
> > Subject: RE: javac Memory Leak: STATUS request
> >
> >
> > I don't know where you can get more information about this but have you
> > considered using jikes instead of javac? I don't know of any issues with
> > jikes and its soooo much faster than javac :-)
> >
> > Jeremy
> >
> > > -----Original Message-----
> > > From: Dan Payne [mailto:[EMAIL PROTECTED]]
> > > Sent: Monday, December 16, 2002 2:32 PM
> > > To: [EMAIL PROTECTED]
> > > Subject: javac Memory Leak: STATUS request
> > >
> > > According to the Tomcat 4.1.12 release notes there is a javac memory
> > > leak. I've searched the bug watch database at sun and have searched the
> > > web as well but am having trouble finding the latest info on this. Has
>
> it
>
> > > been fixed? If so, what version of the JDK? I'm using 1.4.0_01 and my
> > > productin server is crashing every 4 days with out of memory
> > > exceptions.
> > >
> > > Does anyone know where I can track this at/get more info at?
> > >
> > > Thanks a million. Ya'll have been great.
> > >
> > > -Dan
> > >
> > >
> > > --
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> >
> >
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