Error in java sip api

[preethi Ayyappan]

Hi,
I have tried to run a java sip api program.I can able to compile the program.but when running,the following error is displayed

javax.servlet.ServletException: Error allocating a servlet instance
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
java.lang.Thread.run(Thread.java:619)


root cause

java.lang.NoClassDefFoundError: javax/servlet/sip/SipServlet
java.lang.ClassLoader.defineClass1(Native Method)
java.lang.ClassLoader.defineClass(ClassLoader.java:620)
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1853)
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:875)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1330)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1209)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
java.lang.Thread.run(Thread.java:619)

Any help would be appreciated.Thanks

[Rob Spoor]

Have you included the SIP JAR files in your web application?

[preethi Ayyappan]

Thanks for your reply.I have included sip and sipservlet jar files.

[Rob Spoor]

So now it works?

[preethi Ayyappan]

No.its not working.I have already included sip and sipservlet jar files.

[Rob Spoor]

Still the same error? You have put them in WEB-INF/lib?

I'll move this to Servlets since this is a servlet specific error, and has nothing to do with SIP itself - it just can't be found.

[preethi Ayyappan]

yes.I am using eclipse ide.I have put those jar files inside lib .but i have made these changes in the filesystem.but when viewing inside eclipse, there is no jar files found inside web-inf/lib.when running the program,same error is displayed.