Check that you don't accidentally have an older JAR file anywhere in
your classpath; that's what usually gets me :-)
BTW, would it be better to name the class as "Logger" just so that we
don't have to do any changes except an import change?
/Janne
On Nov 26, 2008, at 20:41 , Harry Metske wrote:
Hi devs,
this must be a stupid error, but I don't see it.
I'm working on https://issues.apache.org/jira/browse/JSPWIKI-376
(move from
log4j to slf4j), and created a few classes in package
org.apache.jspwiki.log
Starting up JSPWiki shows that the LoggerFactory in this package is
invoked
about 75 times by JSPWiki classes requesting loggers.
However, when I call the first jsp (Wiki.jsp), which has
org.apache.jspwiki.log.LoggerFactory imported, I get this
NoClassDefFoundError.
Strange, the JSP does compile ! (?)
Same results with other JSP's.
The class resides in JSPWiki.jar.
Why can the other jspwiki classes find this LoggerFactory, but
JSP's can't ?
HTTP Status 500 -
------------------------------
*type* Exception report
*message*
*description* *The server encountered an internal error () that
prevented it
from fulfilling this request.*
*exception*
javax.servlet.ServletException: java.lang.NoClassDefFoundError:
org/apache/jspwiki/log/LoggerFactory
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:274)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
com.ecyrd.jspwiki.ui.WikiServletFilter.doFilter
(WikiServletFilter.java:175)
com.ecyrd.jspwiki.ui.WikiJSPFilter.doFilter(WikiJSPFilter.java:111)
*root cause*
java.lang.NoClassDefFoundError: org/apache/jspwiki/log/LoggerFactory
org.apache.jsp.Wiki_jsp.<init>(Wiki_jsp.java:15)
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance
(NativeConstructorAccessorImpl.java:57)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance
(DelegatingConstructorAccessorImpl.java:45)
java.lang.reflect.Constructor.newInstance(Constructor.java:532)
java.lang.Class.newInstance0(Class.java:372)
java.lang.Class.newInstance(Class.java:325)
org.apache.jasper.servlet.JspServletWrapper.getServlet
(JspServletWrapper.java:145)
org.apache.jasper.servlet.JspServletWrapper.service
(JspServletWrapper.java:329)
org.apache.jasper.servlet.JspServlet.serviceJspFile
(JspServlet.java:337)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
com.ecyrd.jspwiki.ui.WikiServletFilter.doFilter
(WikiServletFilter.java:175)
com.ecyrd.jspwiki.ui.WikiJSPFilter.doFilter(WikiJSPFilter.java:111)
*root cause*
java.lang.ClassNotFoundException: org.apache.jspwiki.log.LoggerFactory
java.net.URLClassLoader$1.run(URLClassLoader.java:217)
java.security.AccessController.doPrivileged(Native Method)
java.net.URLClassLoader.findClass(URLClassLoader.java:205)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:
134)
org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:
66)
java.lang.ClassLoader.loadClassInternal(ClassLoader.java:336)
org.apache.jsp.Wiki_jsp.<init>(Wiki_jsp.java:15)
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance
(NativeConstructorAccessorImpl.java:57)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance
(DelegatingConstructorAccessorImpl.java:45)
java.lang.reflect.Constructor.newInstance(Constructor.java:532)
java.lang.Class.newInstance0(Class.java:372)
java.lang.Class.newInstance(Class.java:325)
org.apache.jasper.servlet.JspServletWrapper.getServlet
(JspServletWrapper.java:145)
org.apache.jasper.servlet.JspServletWrapper.service
(JspServletWrapper.java:329)
org.apache.jasper.servlet.JspServlet.serviceJspFile
(JspServlet.java:337)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
com.ecyrd.jspwiki.ui.WikiServletFilter.doFilter
(WikiServletFilter.java:175)
com.ecyrd.jspwiki.ui.WikiJSPFilter.doFilter(WikiJSPFilter.java:111)
*note* *The full stack trace of the root cause is available in the
Apache
Tomcat/6.0.16 logs.*
