I'm guessing your POs in User are null. Line 15 in TestAction should
tell you what.
Nils-H
On Tue, Nov 11, 2008 at 12:52 PM, aum strut <[EMAIL PROTECTED]> wrote:
> Hi all,
>
> I am using Model Driven approach for transfering my form data to the bean
> object.i have a form(JSP Page) where i have divided the form in three
> sections.
> and based on the name of these sections i have created 3 Bean classes(PO)
> for storing the data.Additonally i have created one more PO class for
> setting values in these three PO classes.below is the code for this class.
>
> *
>
> package* demo;
>
> *
>
> public* *class* User {
>
> *private* AddressPO addressPO;
>
> *private* BusinessInformationPO businessInformationPO;
>
> *private* UserCredentialPO userCredentialPO;
>
> /**
>
> * [EMAIL PROTECTED] the addressPO
>
> */
>
> *public* AddressPO getAddressPO() {
>
> *return* addressPO;
>
> }
>
> /**
>
> * [EMAIL PROTECTED] addressPO the addressPO to set
>
> */
>
> *public* *void* setAddressPO(AddressPO addressPO) {
>
> *this*.addressPO = addressPO;
>
> }
>
> /**
>
> * [EMAIL PROTECTED] the businessInformationPO
>
> */
>
> *public* BusinessInformationPO getBusinessInformationPO() {
>
> *return* businessInformationPO;
>
> }
>
> /**
>
> * [EMAIL PROTECTED] businessInformationPO the businessInformationPO to set
>
> */
>
> *public* *void* setBusinessInformationPO(BusinessInformationPO
> businessInformationPO) {
>
> *this*.businessInformationPO = businessInformationPO;
>
> }
>
> /**
>
> * [EMAIL PROTECTED] the userCredentialPO
>
> */
>
> *public* UserCredentialPO getUserCredentialPO() {
>
> *return* userCredentialPO;
>
> }
>
> /**
>
> * [EMAIL PROTECTED] userCredentialPO the userCredentialPO to set
>
> */
>
> *public* *void* setUserCredentialPO(UserCredentialPO userCredentialPO) {
>
> *this*.userCredentialPO = userCredentialPO;
>
> }
>
> }
>
>
>
> MY action class is looking like this
> *
>
> public* *class* TestAction *extends* ActionSupport
> *implements*ModelDriven<User> {
>
> /**
>
> *
>
> */
>
> *private* *static* *final* *long* *serialVersionUID* = 4184580362763509728L;
>
> *public* String execute() *throws* Exception{
>
> System.*out*.println("inside action");
>
> System.*out*.println(user.getAddressPO().getFirstName());
>
> System.*out*.println(user.getBusinessInformationPO().getTinNumber());
>
> System.*out*.println(user.getUserCredentialPO().getEmail());
>
> *return* *SUCCESS*;
>
> }
>
> *private* User user=*new* User();
>
>
>
> *public* User getModel() {
>
> *return* user;
>
> }
>
> }
>
>
>
> but it is giving me the following exception
>
> inside action
>
> Nov 11, 2008 5:20:11 PM org.apache.catalina.core.StandardWrapperValve invoke
>
> SEVERE: Servlet.service() for servlet default threw exception
> *
>
> java.lang.NullPointerException
> *
>
> at com.test.demo.TestAction.execute(*TestAction.java:15*)
>
> at sun.reflect.NativeMethodAccessorImpl.invoke0(*Native Method*)
>
> at sun.reflect.NativeMethodAccessorImpl.invoke(*
> NativeMethodAccessorImpl.java:39*)
>
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(*
> DelegatingMethodAccessorImpl.java:25*)
>
> at java.lang.reflect.Method.invoke(*Method.java:597*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(*
> DefaultActionInvocation.java:404*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(*
> DefaultActionInvocation.java:267*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invoke(*
> DefaultActionInvocation.java:229*)
>
> at
> com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(*
> DefaultWorkflowInterceptor.java:221*)
>
> at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(*
> MethodFilterInterceptor.java:86*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:224*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:223*)
>
> at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(*
> UtilTimerStack.java:455*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invoke(*
> DefaultActionInvocation.java:221*)
>
> at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(*
> ValidationInterceptor.java:150*)
>
> at
> org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(
> *AnnotationValidationInterceptor.java:48*)
>
> at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(*
> MethodFilterInterceptor.java:86*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:224*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:223*)
>
> at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(*
> UtilTimerStack.java:455*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invoke(*
> DefaultActionInvocation.java:221*)
>
> at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(
> *ConversionErrorInterceptor.java:123*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:224*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:223*)
>
> at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(*
> UtilTimerStack.java:455*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invoke(*
> DefaultActionInvocation.java:221*)
>
> at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(*
> ParametersInterceptor.java:167*)
>
> at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(*
> MethodFilterInterceptor.java:86*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:224*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:223*)
>
> at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(*
> UtilTimerStack.java:455*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invoke(*
> DefaultActionInvocation.java:221*)
>
> at
> com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(*
> StaticParametersInterceptor.java:105*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:224*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:223*)
>
> at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(*
> UtilTimerStack.java:455*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invoke(*
> DefaultActionInvocation.java:221*)
>
> at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(*
> CheckboxInterceptor.java:83*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:224*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:223*)
>
> at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(*
> UtilTimerStack.java:455*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invoke(*
> DefaultActionInvocation.java:221*)
>
> at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(*
> FileUploadInterceptor.java:207*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:224*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:223*)
>
> at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(*
> UtilTimerStack.java:455*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invoke(*
> DefaultActionInvocation.java:221*)
>
> at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(*
> ModelDrivenInterceptor.java:74*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:224*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:223*)
>
> at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(*
> UtilTimerStack.java:455*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invoke(*
> DefaultActionInvocation.java:221*)
>
> at
> com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(*
> ScopedModelDrivenInterceptor.java:127*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:224*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:223*)
>
> at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(*
> UtilTimerStack.java:455*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invoke(*
> DefaultActionInvocation.java:221*)
>
> at org.apache.struts2.interceptor.ProfilingActivationInterceptor.intercept(*
> ProfilingActivationInterceptor.java:107*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:224*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:223*)
>
> at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(*
> UtilTimerStack.java:455*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invoke(*
> DefaultActionInvocation.java:221*)
>
> at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(*
> DebuggingInterceptor.java:206*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:224*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:223*)
>
> at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(*
> UtilTimerStack.java:455*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invoke(*
> DefaultActionInvocation.java:221*)
>
> at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(*
> ChainingInterceptor.java:115*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:224*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:223*)
>
> at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(*
> UtilTimerStack.java:455*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invoke(*
> DefaultActionInvocation.java:221*)
>
> at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(*
> I18nInterceptor.java:143*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:224*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:223*)
>
> at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(*
> UtilTimerStack.java:455*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invoke(*
> DefaultActionInvocation.java:221*)
>
> at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(*
> PrepareInterceptor.java:121*)
>
> at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(*
> MethodFilterInterceptor.java:86*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:224*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:223*)
>
> at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(*
> UtilTimerStack.java:455*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invoke(*
> DefaultActionInvocation.java:221*)
>
> at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(*
> ServletConfigInterceptor.java:170*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:224*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:223*)
>
> at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(*
> UtilTimerStack.java:455*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invoke(*
> DefaultActionInvocation.java:221*)
>
> at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(*
> AliasInterceptor.java:123*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:224*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:223*)
>
> at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(*
> UtilTimerStack.java:455*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invoke(*
> DefaultActionInvocation.java:221*)
>
> at
> com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(*
> ExceptionMappingInterceptor.java:176*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:224*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(*
> DefaultActionInvocation.java:223*)
>
> at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(*
> UtilTimerStack.java:455*)
>
> at com.opensymphony.xwork2.DefaultActionInvocation.invoke(*
> DefaultActionInvocation.java:221*)
>
> at org.apache.struts2.impl.StrutsActionProxy.execute(*
> StrutsActionProxy.java:50*)
>
> at org.apache.struts2.dispatcher.Dispatcher.serviceAction(*
> Dispatcher.java:504*)
>
> at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(*
> FilterDispatcher.java:419*)
>
> at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(*
> ApplicationFilterChain.java:215*)
>
> at org.apache.catalina.core.ApplicationFilterChain.doFilter(*
> ApplicationFilterChain.java:188*)
>
> at org.apache.catalina.core.StandardWrapperValve.invoke(*
> StandardWrapperValve.java:213*)
>
> at org.apache.catalina.core.StandardContextValve.invoke(*
> StandardContextValve.java:174*)
>
> at org.apache.catalina.core.StandardHostValve.invoke(*
> StandardHostValve.java:127*)
>
> at org.apache.catalina.valves.ErrorReportValve.invoke(*
> ErrorReportValve.java:117*)
>
> at org.apache.catalina.core.StandardEngineValve.invoke(*
> StandardEngineValve.java:108*)
>
> at org.apache.catalina.connector.CoyoteAdapter.service(*
> CoyoteAdapter.java:174*)
>
> at org.apache.coyote.http11.Http11Processor.process(*
> Http11Processor.java:874*)
>
> at
> org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(
> *Http11BaseProtocol.java:665*)
>
> at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(*
> PoolTcpEndpoint.java:528*)
>
> at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(*
> LeaderFollowerWorkerThread.java:81*)
>
> at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(*
> ThreadPool.java:689*)
>
> at java.lang.Thread.run(*Thread.java:619*)
>
>
>
> Can any body guide me to the cause of error?
>
>
>
> thanks in advaice
>
> aum
>
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