[rules-users] calling kbuilder API from jsp and servlet

[ashish6276]

Hi,

we are trying to call drools api from servlet by using
KnowledgeBuilderFactory and proving drl path and creating knowledge base and
session but when i am gonna fireRule it is giving me compile time error.
I am pasting the log below.




Aug 9, 2013 10:17:11 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet dispatcher threw exception
java.lang.NoClassDefFoundError: org/drools/builder/KnowledgeBuilderFactory
	at
com.maxmechanics.controller.MMController.fireRulesAndGetResponse(MMController.java:467)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
	at
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:439)
	at
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:427)
	at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
	at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
	at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:915)
	at
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:811)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	at
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:796)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
	at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
	at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Unknown Source)


this error is coming while initializing knowledgefactory.
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory
				.newKnowledgeBuilder();






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