I have a configuration in struts.xml as follows
struts.xml wrote:
>
> <struts>
> <package name="user" namespace="/user" extends="struts-default">
> <default-interceptor-ref name="paramsPrepareParamsStack" />
> <action name="index" class="org.xinus.action.user.BaseAction" >
> <result name="success">/jsp/user/index.jsp</result>
> </action>
> <action name="*User" method="{1}"
> class="org.xinus.action.user.UserAction" >
> <result name="input">/jsp/user/{1}User-success.jsp</result>
> <result name="success" type="redirectAction">index</result>
> </action>
> </package>
> </struts>
>
I have User.action as follows
User.action wrote:
>
> @Entity
> @Table(name="APP_USER",schema="S2APP")
> public class User implements Serializable {
> private String email;
> private String firstname;
> private String lastname;
> private String password;
>
>
>
>
> @Id
> @Column(name="EMAIL")
> public String getEmail() {
> return email;
> }
> @EmailValidator(message="Validation Error", key="validate.email")
> public void setEmail(String email) {
> this.email = email;
> }
> @RequiredStringValidator(message="Validation Error",
> key="validate.notEmpty", trim=true)
> @Column(name="FIRST_NAME")
> public String getFirstname() {
> return firstname;
> }
>
> public void setFirstname(String firstname) {
> this.firstname = firstname;
> }
> @Column(name="USER_PASSWORD")
> @RequiredStringValidator(message="Validation Error",
> key="validate.notEmpty",trim=true, shortCircuit=true)
> @StringLengthFieldValidator(message="Length too short",
> key="validate.minLength.6",trim=true, minLength="6")
> public String getPassword() {
> return password;
> }
>
> public void setPassword(String password) {
> this.password = password;
> }
> @RequiredStringValidator(message="Validation Error",
> key="validate.notEmpty", trim=true)
> public String getLastname() {
> return lastname;
> }
>
> public void setLastname(String lastname) {
> this.lastname = lastname;
> }
> }
>
UserServiceImpl.java as
UserServiceImpl.java wrote:
>
> public class UserServiceImpl implements UserService {
>
> public User findByEmail(String email){
> EntityManagerFactory emf;
> EntityManager entityMgr;
> EntityTransaction tx;
> emf= Persistence.createEntityManagerFactory("s2app");
>
> entityMgr=emf.createEntityManager();
>
> tx = entityMgr.getTransaction();
> tx.begin();
> User user=entityMgr.find(User.class,email);
> tx.commit();
> return user;
> }
> public void persist(User user, String email){
> EntityManagerFactory emf;
> EntityManager entityMgr;
> EntityTransaction tx;
> emf= Persistence.createEntityManagerFactory("s2app");
> entityMgr=emf.createEntityManager();
>
> tx = entityMgr.getTransaction();
> tx.begin();
> entityMgr.persist(user);
> tx.commit();
>
> }
> }
>
UserAction.java as
UserAction.java wrote:
>
>
>
> public class UserAction extends ActionSupport implements
> ModelDriven<User>, Preparable {
> protected User user;
>
> public User getUser() {
> return user;
> }
>
> public void setUser(User user) {
> this.user = user;
> }
> public UserService userService;
> public void setUserService(UserService userService){
> this.userService=userService;
> }
> String emailId;
>
> public String getEmailId() {
> return emailId;
> }
>
> public void setEmailId(String emailId) {
> this.emailId = emailId;
> }
>
> public void prepare(){
> if(emailId==null){
> this.user=new User();
> }
> else{
> this.user=userService.findByEmail(emailId);
> }
> }
> public String find() {
> return INPUT;
> }
> public String update() {
> userService.persist(this.user,emailId);
> return SUCCESS;
> }
>
> public User getModel() {
> return user;
> }
> }
>
>
Now when i insert a record using form I get a error as
attempt to create create event with null entity
RequestURI=/app/user/updateUser.action
Caused by:
java.lang.IllegalArgumentException: attempt to create create event with null
entity
at org.hibernate.event.PersistEvent.(PersistEvent.java:24)
at org.hibernate.event.PersistEvent.(PersistEvent.java:17)
at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:592)
at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:596)
at
org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:212)
at
org.xinus.services.impl.UserServiceImpl.persist(UserServiceImpl.java:43)
at org.xinus.action.user.UserAction.update(UserAction.java:59)
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:184)
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.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.ParametersInterceptor.doIntercept(ParametersInterceptor.java:184)
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.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$2.doProfiling(DefaultActionInvocation.java:223)
at
com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at
org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:50)
at
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:504)
at
org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:419)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
at
com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:118)
at
com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
at
org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:99)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
at
org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:211)
at
org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
at org.mortbay.jetty.Server.handle(Server.java:313)
at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:506)
at
org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:844)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:644)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381)
at
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:396)
at
org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442)
When i tried to debug it I am getting user object in prepare() function i.e.
user is not null but when i check the same value in update method it comes
out to be null
My jsp form is as follows
<%@ taglib uri="/struts-tags" prefix="s" %>
<head>
<title><s:text name="user.findUser.title"/></title>
</head>
<body>
<s:form namespace="/user" action="updateUser" method="post" >
<s:textfield key="user.firstname" name="firstname" />
<s:textfield key="user.lastname" name="lastname" />
<s:textfield key="user.email" name="email" />
<s:password label="user.password" name="password" />
<s:hidden name="emailId" />
<s:if test="email==null">
<s:submit value="Register" />
</s:if>
<s:else>
<s:submit value="Update" />
</s:else>…
</s:form>
</body>
</html>
When I remove default params stack it is working properly. I want to use
ParamsPrepareParams stack. I am following apress struts2 practical guid book
Somebody please help me out...
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