Access servlets from subdirectory of classes folder
Hi,
This is my directory structure.
Tomcat home dir>webapps\lessons\WEB-INF \classes\examples\HelloClientServlet.class
and here is my web.xml
<servlet>
<servlet-name>HelloClientServlet</servlet-name>
<servlet-class>examples.HelloClientServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloClientServlet</servlet-name>
<url-pattern>/servlet/examples.HelloClientServlet</url-pattern>
</servlet-mapping>
Now I run run Tomcat and try to access the URL
http://localhost:8083/lessons/servlet/examples.HelloClientServlet
It gives this ERROR:
javax.servlet.ServletException: Error allocating a servlet instance
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Thread.java:534)
root cause
java.lang.NoClassDefFoundError: examples/HelloClientServlet (wrong name: HelloClientServlet)
java.lang.ClassLoader.defineClass0(Native Method)
java.lang.ClassLoader.defineClass(ClassLoader.java:539)
Now here is the problem. I tried putting HelloClientServlet.class in classes directory and made appropriate changes to web.xml and it works.
But not in the subdirectory classes. I find it very strange. I feel there is no problem with my web.xml file. Am I am missing some configuration here.
Please give you inputs.
Thanks,
Tick_Tick
When you put the HelloClientServlet class in the examples folder and reference it using examples.HelloClientServlet then the class needs to be compiled in the examples package.
Check out the Java tutorial on packages:
http://java.sun.com/docs/books/tutorial/java/interpack/index.html
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