On Sun, Apr 25, 2010 at 11:08 AM, gary ng <garyng2...@gmail.com> wrote:
> Hi, > > I am trying to use clojure to write servlets for GAE and is encountering > problem with clojure.contrib.logging. When trying to use the logging > function, I get the following exception: > > java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory > at java.net.URLClassLoader$1.run(URLClassLoader.java:202) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:190) > at java.lang.ClassLoader.loadClass(ClassLoader.java:307) > at > com.google.appengine.tools.development.IsolatedAppClassLoader.loadClass(IsolatedAppClassLoader.java:151) > at java.lang.ClassLoader.loadClass(ClassLoader.java:248) > at clojure.contrib.logging$fn__49$fn__51.invoke(logging.clj:188) > at clojure.lang.AFn.applyToHelper(AFn.java:173) > at clojure.lang.AFn.applyTo(AFn.java:164) > at clojure.core$apply__4370.invoke(core.clj:436) > at clojure.core$memoize__6537$fn__6539.doInvoke(core.clj:4328) > at clojure.lang.RestFn.invoke(RestFn.java:413) > at guestbook.servlet$_doGet__3.invoke(servlet.clj:15) > > > Seems to find the reason. The GAE SDK does package org.apache.common.logging which means when I am 'gen-class' my servlet, it saw this and thus the logging is 'nailed' to use this class. But the runtime doesn't have it. I can fallback to use java.util.logging but see this to be a more common problem and don't know how to solve elegantly. What seems to be happening is that when I build my 'gen-class' package, the class is nailed down even though logging.clj itself is not gen-classed. Then how can I achieve this form of 'dynamic loading and configuration' as I do need gen-class for my servlet class and it is almost impossible to control what jar is visible during the development/build environment. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
