Parameter always null on ui:composite xhtml page [duplicate] - jsf

I have a simple JSF 2.0 composite component example.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:cc="http://java.sun.com/jsf/composite"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<head>
<title>
A panel box component
</title>
</head>
<body>
<cc:interface>
<cc:attribute name="model" required="true" type="at.test.Person"/>
</cc:interface>
<cc:implementation>
<h:inputText value="#{model.vorname}">
</h:inputText>
</cc:implementation>
</body>
And here is my JSF test page:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:mc="http://java.sun.com/jsf/composite/mygourmet" >
<h:body>
<h:form>
<mc:inputTest model="#{person}">
</mc:inputTest>
<h:commandButton value=""/>
<h:outputText value="#{person.vorname}"/>
</h:form>
</h:body>
</html>
I want that my composite component saves a string value in a JSF session bean with <h:inputText>. But the problem is, when I submit the form with the <h:commandButton> I see the following error:
Caused by: javax.el.PropertyNotFoundException: /resources/mygourmet/inputTest.xhtml at line 18 and column 42 value="#{model.vorname}": Target Unreachable, identifier 'model' resolved to null
at org.apache.myfaces.view.facelets.el.TagValueExpression.getType(TagValueExpression.java:73)
at org.apache.myfaces.shared_impl.renderkit._SharedRendererUtils.findUIOutputConverter(_SharedRendererUtils.java:77)


You need to reference composite component attribute values by #{cc.attrs.<name>} where <name> is the attribute name. So, this should do:
<h:inputText value="#{cc.attrs.model.vorname}">
See also:
Java EE 6 tutorial - Facelets - Composite Components
Java EE 6 tutorial - Advanced Composite Components
<composite:xxx> tag documentation
Unrelated to the concrete problem, all that <html><head><body> in the composite is unnecessary. I suggest to use <ui:component> since that's more clear. See also our composite component wiki page for examples.

Related

Problem including another XHTML page in an XHTML page

I am a beginner programming Java and I am doing a project using primefaces. I want to include another XHTML page in an XHTML page. The include page is in /WEB-INF/facelets/include.xhtml (It has some data from a Managed Bean)
In my "page.xhtml", at first, I put this line inside <ui:define name="content">:
<ui:include src="WEB-INF/facelets/include.xhtml" />
But, it does not work.
Later, I tried to do this inside <ui:define name="content">
<ui:include src="WEB-INF/facelets/include.xhtml">
<ui:param name="fullName" value="#{identityInformationBean.fullName}" />
</ui:include>
And in the "include.xhtml":
<h:outputText
rendered="#{fullName!=null}"
value="#{fullName}" />
But, it does not work too. Nevertheless, if I do this:
On "page.xhtml"
<ui:include src="WEB-INF/facelets/include.xhtml">
<ui:param name="fullName" value="Helen" />
</ui:include>
The "include.xhtml" receives the information correctly.
I'd tried to registering the include file as a tagfile, as suggest here How to include another XHTML in XHTML using JSF 2.0 Facelets?
But, it does not work.
Any idea to solve this problem? Thanks!
This is a piece of code from "include.xhtml":
<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:c="http://java.sun.com/jstl/core"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui">
<h:outputText
rendered="#{identityInformationBean.fullName!=null}"
value="#{identityInformationBean.fullName}" />
</ui:composition>
This is a piece of code from "page.xhtml":
<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:c="http://java.sun.com/jstl/core"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.org/ui" template="templates/generaltemplate.xhtml">
<ui:define name="content">
<h2>
<h:outputText value="Identity Information"/>
</h2>
</ui:define>
</ui:composition>

I'm not sure why you need ui:param. Think of the include file as just saving you the trouble of typing that included code into all the pages that might use it. You don't need to pass it a parameter.
What about using a single line of code: <ui:include src="WEB-INF/facelets/include.xhtml"/> And the include file would have <h:outputText value="#{identityInformationBean.fullName}"/>

Component library HTML basic does not contain datatable

I am creating a datatable using JSF pages but when I am trying to create one I am getting an error Component library HTML basic does not contain datatable, I have no idea why it doesn't contain this feature. I couldn't find anything to help this error through other sources.
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" " "http: //www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets">
<h:head>
<title>Facelet Title</title>
</h:head>
<h:body>
<ui:composition template="/Template.xhtml" >
<ui:define name="content">
<h:panelGrid>
<h:datatable value ="#{//somecode}">
</h:panelGrid>
</ui:define>
</ui:composition>
</h:body>
</html>

I was using datatable instead of the component dataTable

ICEfaces configured for view /index.xhtml but h:head and h:body components are required

I am trying to integrate the ICEFaces ACE component library in my project. I've the following view:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<head>
<h:outputStylesheet library="org.icefaces.component.skins"
name="rime.css" />
<f:loadBundle basename="resources.application" var="msg" />
<title>
<h:outputText value="#{msg.templateTitle}" />
</title>
</head>
<body>
<div id="content">
<h:form>
<ace:dataTable var="user" value="#{userBean.users}"
paginator="true" rows="50" selectionMode="multiple">
<ace:column headerText="users">
<ace:row>#{user}</ace:row>
</ace:column>
</ace:dataTable>
</h:form>
</div>
</body>
</html>
Unfortunately apparently there is no JavaScript / CSS loaded, so the components are not displayed properly. Moreover, the server logs this:
ICEfaces configured for view /index.xhtml but h:head and h:body components are required
Is this related?

You need to use JSF <h:head> and <h:body> components instead of plain HTML <head> and <body>. This way JSF and any JSF component library will be able to programmatically auto-include CSS/JS resources in there.
E.g.
<!DOCTYPE html>
<html lang="en"
xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://java.sun.com/jsf/core">
xmlns:h="http://java.sun.com/jsf/html"
xmlns:ui="http://java.sun.com/jsf/facelets"
>
<f:loadBundle basename="resources.application" var="msg" />
<h:head>
<title>#{msg.templateTitle}</title>
</h:head>
<h:body>
...
</h:body>
</html>
Note that this way you also don't need that <h:outputStylesheet> anymore.
See also:
One or more resources has the target of 'head' but not 'head' component has been defined within the view
Unrelated to the concrete problem, you'd better declare resources.application as <resource-bundle> in faces-config.xml, so that you don't need to repeat it over all views. Also note that you don't necessarily need <h:outputText> over all place. The <head> and all of above also indicates that you're learning JSF based on a JSF 1.x targeted tutorial instead of a 2.x targeted one. Make sure that you're using the right resources to learn.

Calling another page in JSF

I have a simple JSF application with 2 .xhtml files. When I run the application, the 1st page displayed is welcome.xhtml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html">
<h:head>
<title>Final Project</title>
</h:head>
<h:body bgcolor="white">
<div align="center" style="border:5px outset blue;">Welcome to the Product Inventory Application</div>
<br></br>
<br></br>
<h:commandButton value="View All Products" action="allProducts"/>
</h:body>
It displays fine, but when I press the View All Products button, I expect it to display the allProducts.xhtml facelet. But when I click the button, nothing happens at all, no exception or anything. The allProducts.xhtml page is just:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html">
<h:head>
<title>All Products</title>
</h:head>
<h:body bgcolor="white">
<h3>Test</h3>
</h:body>
</html>

The problem is that an UICommand (<h:commandButton>, <h:commandLink> and similars) must be inside a form i.e. <h:form>. Change your welcome.xhtml page to:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html">
<h:head>
<title>Final Project</title>
</h:head>
<h:body bgcolor="white">
<div align="center" style="border:5px outset blue;">Welcome to the Product Inventory Application</div>
<br></br>
<br></br>
<h:form>
<h:commandButton value="View All Products" action="allProducts"/>
</h:form>
</h:body>
More info:
h:commandLink / h:commandButton is not being invoked, reason 1. IMO, I suggest you to mark this question as a favorite if you're going to work a lot with JSF :).

I don't know the precise detail by heart, but here is the general idea. The action attribute of the button on the welcome page is referring to an 'allProducts' method of the backing bean. That method would have to return the string 'allProducts.xhtml' in order to have JSF present the products page.
So you have to introduce a backing bean for the welcome page and endow that class with a method 'allProducts'.

Ajax update dataTable from commandButton located in included file

I have such situation situation:
in file form.xhtml i have form used for filter some tables, i gave button "filter" defined here.
in file tableOne.xhtml, tableTwo.html, .. i have dataTable with id "filterTable", i've also included form.xhtml into this page. all pages with dataTables includes form.xhtml and all dataTables on them have the same id "filterTable"
what i want to do is to update dataTable[#filterTable] on after filter button is pressed using ajax. button is created by <p:commandButton>. if form and datatable are defined in the same file, all i need is simply add update="filterTable" to my command bytton. but if i add it to button defined in form.xhtml i get "Cannot find component with identifier" error.
is it possible to dynamic update dataTables from outside xhtml files included on page? if it is, how can i do it?

Example:
test.xhtml:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui">
<h:head></h:head>
<h:body>
<h:form id="dtForm">
<p:dataTable id="dataTable" />
</h:form>
<ui:include src="/include.xhtml" />
</h:body>
</html>
include.xhtml:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui">
<h:head></h:head>
<h:body>
<h:form>
<p:commandButton value="button" update=":dtForm" />
</h:form>
</h:body>
</html>

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