I also encounter a problem like this ：i request the page,shou correct,when i
submit the page,rase an error.
jsf page:
<h:selectManyListbox id="teams" value="#{UserForm.userTeamIds}" >
<f:selectItems value="#{UserForm.userTeamMap}"/>
</h:selectManyListbox>
backing bean :
public class UserForm {
private UserService userService;
private User user;
.......
public List<String> getUserTeamIds(){
log.debug("getUserTeamIds go here..");
List<String> li=new java.util.ArrayList<String>();
if(user!=null){
Set<Team> teams=user.getTeams();
for (Iterator<Team>
itr=teams.iterator();itr.hasNext();){
Team r=itr.next();
li.add(r.getTeamId().toString());
}
}
return li;
}
/**
* for select many
* @return
*/
public Map<String,String> getUserTeamMap(){
log.debug("getUserTeamMap here :");
java.util.Map<String,String> m=new
java.util.LinkedHashMap<String,
String>();
if(user!=null){
Set<Team> teams=user.getTeams();
for (Iterator<Team>
itr=teams.iterator();itr.hasNext();){
Team t=itr.next();
m.put(t.getTeamName(),t.getTeamId().toString());
}
}
return m;
}
............
}
run in en error :
-------------------------------------------------
javax.servlet.ServletException
javax.faces.webapp.FacesServlet.service(FacesServlet.java:256)
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:75)
org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:147)
root cause
java.util.NoSuchElementException
javax.faces.component.SelectItemsIterator.next(SelectItemsIterator.java:117)
javax.faces.component.SelectItemsIterator.next(SelectItemsIterator.java:164)
javax.faces.component.SelectItemsIterator.next(SelectItemsIterator.java:49)
javax.faces.component.UISelectMany.matchValue(UISelectMany.java:485)
javax.faces.component.UISelectMany.validateValue(UISelectMany.java:454)
javax.faces.component.UIInput.validate(UIInput.java:867)
javax.faces.component.UIInput.executeValidate(UIInput.java:1065)
javax.faces.component.UIInput.processValidators(UIInput.java:666)
javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1030)
javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1030)
javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1030)
javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1030)
javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1030)
javax.faces.component.UIForm.processValidators(UIForm.java:229)
javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1030)
javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:662)
com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:100)
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:75)
org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:147)
-------------------------------------------------
i debug in it ,when i post the page,the page invoke the
UserForm.getUserTeamMap() method,but return
a empety map,then the server validate the selectmany's available value and
selectedItems,then mismath.and throw a exception......is this reson???? who
can tell me .
Damien GUERIN wrote:
>
> Hi everyone,
>
> i've a problem with the UISaveState component... I've a JSF page which
> contains a form with many inputs.
>
> <h:form id="myForm">
> <t:saveState id="save" value="#{mainBean}" />
> <h:selectOneMenu id="sessionLabel"
> value="#{mainBean.param1}"
> immediate="true" onchange="submit()"
> valueChangeListener="#{mainBean.param1SelectionChangedHandler}">
> <f:selectItems value="#{mainBean.param1List}" />
> </h:selectOneMenu>
> <h:inputText id="param1" value="#{mainBean.param2}" />
> <h:commandButton action="#{mainBean.doValidate}"
> value="OK" />
> </h:form>
>
> mainBean is a bean which contains :
> - param1 attribute ;
> - param2 attribute ;
> - secondBean : bean to fill param2 in function of param1 selection.
>
> So, my problem :
> when the param1 value changes, the param2 don't change even if the param2
> value seems to be calculated and assigned correctly in the mainBean (the
> display don't work, saveState, restoreState problem??).
> If the secondBean is declared transient, when the param1 value changes,
> the param2 value changes too and it's ok but in this case, there is a
> problem in the form submission. The value of param2 is always the
> calculated value in param1SelectionChangedHandler even if user change the
> value directly in the form (the setter of param2 doen't seem to be
> used)...
>
> Thanks a lot.
>
>
>
--
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