HELP passing parameters between pages
Hi, everyone:
I'm trying to pass parameters between page. For example, i pass an id from home.jsp to a seam component in which i do some DB query according the parameter and then redirect to another page. But i cannot get the queried result.
the start page:
<f:view>
<h:form prependId="false">
<h:inputText id="id" value="#{testId}"></h:inputText>
<h:commandLink action="#{test_statefull.turn}">
<h:outputText value="CommandLink"></h:outputText>
</h:commandLink>
</h:form>
</f:view> the seam component:
@Stateful
@Name("test_statefull")
@Scope(ScopeType.CONVERSATION)
public class TestAction_Stateful implements TestStatefull{
@PersistenceContext(type = EXTENDED)
private EntityManager em;
@DataModel
//@Out
private List testList; //=new LinkedList();
@In(required=false)
@Out(required=false)
private String testId;
@Begin(join=true)
public String turn(){
System.out.println("%%%%%%%%%%%%%%%% "+testId);
testList=new LinkedList();
if(testId.equals("1")){
testList.add(1);
testList.add(11);
}
else if(testId.equals("2")){
testList.add(2);
testList.add(22);
}
else{
testList.add(3);
testList.add(33);
testList.add(333);
}
return "turn";
}
@Remove
public void destroy(){
}
} the result page:
<f:view>
<h:dataTable border="0" value="#{testList}" var="ll">
<h:column id="column1">
<h:outputText value="#{ll}"></h:outputText>
</h:column>
</h:dataTable>
</f:view> in the result page, i always get nothing.
I have tried add a factory method into the seam component:
@Factory(testList
)
public void find(){
System.out.println("%%%%%%%%%%%%%%%% "+testId);
System.out.println("%%%%%%%%%%%%%%%% "+testList);
} But both the testId
and testList
are null.
I have also tried seam-pojo and stateless-session-bean as the component and tried default scope, but all failed.
Could anyone help me? Thanks a lot.
