How can I best extend WebdavServlet?
Hi all. I'm new to Tomcat4, although I've been using Tomcat3 for over two years. A major difference appears to be the classloader mechanism, which I'm having trouble getting to grips with. This leads to my question: Is it possible to write a class that extends the Tomcat4 WebdavServlet? If I try the obvious 'MyWebdavServlet extends WebdavServlet' in my own package, I get a ClassDefNotFound for org/apache/catalina/servlets/WebdavServlet when I try to call it. I guess this is something to do with the classloader, because if I put the same MyWebdavServlet into the org.apache.catalina.servlets package (which I know is a dodgy thing to do) and put that class under tomcat/server/classes, all works well... Can anyone explain this phenomenon? Has anyone written a class in their own package that extends WebdavServlet? Cheers Dave Small -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: How can I best extend WebdavServlet?
If the class exists in a jar archive inside $TOMCAT_HOME/server/lib or server/classes your webapps cannot see it. Only the container sees that. You can remedy this by moving the jar file that contains the class you want to common/lib. That way, both the container and your webapp can see it. plain lib (or shared/lib in Tomcat-4.1.x) is where you put classes that only your webapps can see. Jake At 12:35 PM 9/21/2002 +0100, you wrote: Hi all. I'm new to Tomcat4, although I've been using Tomcat3 for over two years. A major difference appears to be the classloader mechanism, which I'm having trouble getting to grips with. This leads to my question: Is it possible to write a class that extends the Tomcat4 WebdavServlet? If I try the obvious 'MyWebdavServlet extends WebdavServlet' in my own package, I get a ClassDefNotFound for org/apache/catalina/servlets/WebdavServlet when I try to call it. I guess this is something to do with the classloader, because if I put the same MyWebdavServlet into the org.apache.catalina.servlets package (which I know is a dodgy thing to do) and put that class under tomcat/server/classes, all works well... Can anyone explain this phenomenon? Has anyone written a class in their own package that extends WebdavServlet? Cheers Dave Small -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: How can I best extend WebdavServlet?
- Original Message - From: Jacob Kjome [EMAIL PROTECTED] If the class exists in a jar archive inside $TOMCAT_HOME/server/lib or server/classes your webapps cannot see it. Only the container sees that. Thanks Jake. One question remains - if I reference the WebdavServlet within web.xml Tomcat seems able to find it ok in server/lib when I invoke the servlet. If I reference MyWebdavServlet within web.xml (and MyWebdavServlet extends WebdavServlet) Tomcat finds MyWebdavServlet but fails to find WebdavServlet (giving the ClassDefNotFound error). Is there something in the spec that the classloader can only load main classes and not classes that are used as a basis for these main classes (such as WebdavServlet)? cheers dave -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
