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From "Craig R. McClanahan" <>
Subject Re: Probably a simple problem with an equally simple solution...
Date Wed, 11 Jul 2001 02:30:41 GMT

On Mon, 9 Jul 2001, Kedar Hirve wrote:

> 	I was trying to develop my own valve to plug into Catalina, but
> running into some problems. I wrote up a little class that implements Valve
> and has empty code for getInfo() and invoke(). I put it in its own package
> called valvetest, compiled it just fine, put that folder
> with the class in it in Catalina's startup classpath, and added a valve
> element to my server.xml.
> 	Catalina could find the class when it started, but would give me an
> IllegalArgumentException - argument type mismatch for the valve. Finally I
> decided to stick the classes into catalina.jar, and it worked. The odd thing
> here is that before I jarred it, Catalina found the class just fine, and
> even _ran its constructor_.
> 	Though I have one solution for this now (jarring it into
> catalina.jar), I'm not terribly satisfied with that. I wanted to know if
> there's a more convenient way of adding my custom components without
> modifying catalina.jar.
> Thanks, in advance.
> -KSH

You should put Valve classes in one of the following two places:
- Unpacked under $CATALINA_HOME/server/classes
- In a JAR file under $CATALINA_HOME/server/lib

The startup processing automatically adds these repositories to the
correct class loader, so no mucking around with CLASSPATH is required (or


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