use jikes to compile JSP in default web.xml

[michaellee]

Hi,
I have installed jboss 3.0.6 with embedded Tomcat (4.1.12). Under tomcat-4.1.x/conf, there is an web.xml which (according to the comment in the file) is the default for all web-application. Is this file used in JBoss+Tomcat environment?

I have modified this file to use jikes instead of javac for JSP compliation. It seems does not work.

Should the modification applied to web.xml for the specific application?

Regards,
Michael

[jonlee]

The default web.xml for the embedded Tomcat should exist in the Tomcat SAR located in the JBoss deploy directory. This configuration applies to all web applications unless overridden by a WARs web.xml.

The JSP servlet should look something like the following for the Jikes implementation:

<servlet-name>jsp</servlet-name>
<servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
<init-param>
<param-name>development</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>checkInterval</param-name>
<param-value>900</param-value>
</init-param>
<init-param>
<param-name>compiler</param-name>
<param-value>jikes</param-value>
</init-param>
<init-param>
<param-name>javaEncoding</param-name>
<param-value>iso-8859-1</param-value>
</init-param>
<load-on-startup>3</load-on-startup>


YMMV for tuning and operational parameters. Read the Tomcat notes on configuring Jasper for more information and refer to the servlet specifications for standard servlet configuration parameters in web.xml.

[michaellee]

Thanks for your reply.

However, i am using 3.0.6. Is the Tomcat SAR you mention just exists in 3.2?

Would you please specify the cooresponding name of the file in 3.0.6?

Regards,
Michael

[jonlee]

Sorry, my bad. The 3.0.x releases lacked consistency in this area of configuration and deployment. The web.xml will be in the separate Tomcat-4.1.x/conf directory. Modify that accordingly. At the least, add the Jikes parameter and the encoding for Jasper to run correctly.

[michaellee]

Thanks. Actually, i have modified the web.xml to invoke jikes for JSP Compilation. Actually, my problem is that i am not sure whether jikes or javac has been used even after the modification. (since the message displayed is still [javac]).
Yesterday, i have search the web on this issue and following is obtained.

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/Standalon
>e /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
>

I have performed the test and get the Jikes error message. Therefore, the web.xml i have modified is okay (just at the location you mentioned)

Thanks again for your support.

Regards,
Michael

[jonlee]

Ah. I see that you were just trying to confirm Jikes invocation. You can also do that by removing the encoding definition as Jikes does invoke properly without it.