I am using an Eclipse plugin for my development environment. Instead of
copying dependant classes and jars to WEB-INF after every change, the plugin
includes an optional DevLoader class that extends
org.apache.catalina.loader.WebappLoader, overrides start()., and adds the
appropriate repositories to the classpath via addRepository().
This worked fine for Tomcat 5.0.28. When I upgraded to 5.5.12, the exact
same configuration produces the an exception on application startup
"...Caused by: java.lang.NoClassDefFoundError:
javax/servlet/http/HttpServlet". Without the plugin, everything works as
expected.
Any ideas on what could have changed? My application uses Commons Logging
(required by Struts), Log4J, and Xerces so those jars are being added in the
manner described above. Maybe there is a conflict there?
Thanks,
Ori
---------
Full exception text:
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:275)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Caused by: java.lang.NoClassDefFoundError: javax/servlet/http/HttpServlet
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:870)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1305)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1187)
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