Hello!
Our client use Tomcat 5.0.28.
We deploy Web application with jnlp servlet on this Tomcat.
>From time to time after restart of Tomcat and when first user tries to
>download our application via Java WebStart there occures
>java.lang.ClassNotFoundException exceptions on Tomcat's side like following:
java.lang.NoClassDefFoundError: jnlp.sample.servlet.DownloadRequest
at
jnlp.sample.servlet.JnlpDownloadServlet.handleRequest(JnlpDownloadServlet.java:122)
at
jnlp.sample.servlet.JnlpDownloadServlet.doGet(JnlpDownloadServlet.java:113)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
...
Caused by: java.lang.ClassNotFoundException: jnlp.sample.servlet.DownloadRequest
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1340)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1189)
... 40 more
or like following
java.lang.NoClassDefFoundError: jnlp.sample.servlet.ResourceCatalog$PathEntries
at
jnlp.sample.servlet.ResourceCatalog.lookupResource(ResourceCatalog.java:109)
at
jnlp.sample.servlet.JnlpDownloadServlet.handleVersionRequest(JnlpDownloadServlet.java:204)
at
jnlp.sample.servlet.JnlpDownloadServlet.locateResource(JnlpDownloadServlet.java:179)
at
jnlp.sample.servlet.JnlpDownloadServlet.handleRequest(JnlpDownloadServlet.java:120)
at
jnlp.sample.servlet.JnlpDownloadServlet.doGet(JnlpDownloadServlet.java:85)
...
Caused by: java.lang.ClassNotFoundException:
jnlp.sample.servlet.ResourceCatalog$PathEntries
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1340)
at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1189)
... 45 more
etc.
Not found classes are different each time.
Bu these classes exist in classpath - they are in WEB-INF\lib.
We do not have these exceptions if we run Tomcat using Java 1.4.
These exceptions occures on Java 5 only.
As far as I can see these exceptions occurs only once after restart of Tomcat,
when first user downloads our application.
There are no any ClassNotFoundException when second user downloads our
application.
We have such problems on a few clients.
Ant these clients can't change either version of Tomcat or version of Java.
Do you have any idea what could be wrong?
Thank you,
Vladimir.
