I am new to JSF, Java EE and am having abit of a problem with a small test case I am trying out with Faces.xml, JSF and ManagedBeans..
I have a managedBean called beanManager.java and in it, I have two fields(name and testname) and a method called testcase1() that just returns a string. Now, in the frontpage.xhtml, I have an input text box that gets a name from a user and once the user clicks the submit button, the testcase1() method is called and all it does is just set the testname field of the BeanManager.java class with the user's input but for some reasons-obviously why I am sending this message- when the user enter's the name and hits the search button the page navigates to the displaypage.xhtml and the page displays nothing. It is supposed to show the name entered by the user but it is blank. I was advised to use #SessionScoped instead of #RequestScoped but the problem now is that when I deploy my Java EE application on glassfish, i get the following error:
Exception Occurred :Error occurred during deployment: Exception while loading the app :
java.lang.IllegalStateException: ContainerBase.addChild: start:
org.apache.catalina.LifecycleException: java.lang.IllegalArgumentException:
javax.servlet.ServletException: com.sun.enterprise.container.common.spi.util.InjectionException:
Error creating managed object for class: class org.jboss.weld.servlet.WeldListener
Below are my files..
BeanManager.java
import javax.enterprise.context.SessionScoped;
import javax.faces.bean.ManagedBean;
#ManagedBean(name = "user")
#SessionScoped
public class BeanManager {
private String name = "";
private String testname = "";
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String testcase1(){
setTestname(this.name);
return "test1";
}
public String getTestname() {
return testname;
}
public void setTestname(String testname) {
this.testname = testname;
}
}
frontpage.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:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<ui:composition template="WEB-INF/templates/origin.xhtml">
<ui:define name="content">
<f:view>
<h:form>
<h:panelGrid>
<h:inputText value="#{user.name}" required = "true"/>
</h:panelGrid>
<h:commandButton
action="#{user.testcase1()}"
value="Search"></h:commandButton>
</h:form>
</f:view>
</ui:define>
</ui:composition>
</html>
displaypage.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:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<ui:composition template="/WEB-INF/templates/origin.xhtml">
<ui:define name="content">
<h:panelGrid>
<h:outputText value="#{user.testname}"/>
<h:commandButton id="back" value="GoBack" action="frontpage"/>
</h:panelGrid>
</ui:define>
</ui:composition>
</html>
faces-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<faces-config
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd"
version="2.0">
<navigation-rule>
<from-view-id>/frontpage.xhtml</from-view-id>
<navigation-case>
<from-action>#{user.testcase1()}</from-action>
<from-outcome>test1</from-outcome>
<to-view-id>/displaypage.xhtml</to-view-id>
<redirect/>
</navigation-case>
</navigation-rule>
<navigation-rule>
<from-view-id>/displaypage.xhtml</from-view-id>
<navigation-case>
<from-outcome>GoBack</from-outcome>
<to-view-id>/frontpage.xhtml</to-view-id>
</navigation-case>
</navigation-rule>
</faces-config>
You can't use the CDI annotation javax.enterprise.context.SessionScoped with the JSF javax.faces.bean.ManagedBean. You either go pure JSF with
javax.faces.bean.ManagedBean(naming) and javax.faces.bean.SessionScoped (scoping)
OR Pure CDI
javax.inject.Named (naming) and javax.enterprise.context.SessionScoped(scoping)
Related:
Java EE 6 #javax.annotation.ManagedBean vs. #javax.inject.Named vs. #javax.faces.ManagedBean
Related
If I pass an expression to a composite component like
<My:myButton action="#{bean.myaction()" value="#{bean.buttText()}"
and try to use it in
<cc:implementation>
<h:commandButton actionListener="#{cc.attrs.action} value="#{cc.attrs.value}...
I get the exception "Target Unreachable, identifier 'bean' resolved to null".
But only if bean is a <ui:param name="bean" value="#{myRealBean}"/> inside a template. The error only occours with actionListener. The button text, resolved from the same bean in the same way will be shown.
This old question seems to have the same problem but no answer.
If I split the parameter to
<My:myButton bean="#{bean}" method="myaction" value="#{bean.buttText()}"
and use
<cc:implementation>
<h:commandButton actionListener="#{cc.attrs.bean[cc.attrs.method]()} ...
no error occours and everything works fine.
How can I use a function-expression in an actionListener inside a composite component, where the bean is a <ui:param?
Glassfish 4.1.1, Mojarra 2.2.12
And now, the MCVE
a bean:
package beans;
import java.io.Serializable;
import javax.faces.view.ViewScoped;
import javax.inject.Named;
#Named
#ViewScoped
public class Testbean implements Serializable {
public String getButtText() { return "Submit"; }
public void doAction() { System.out.println("Ajax was here."); }
}
a 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://xmlns.jcp.org/jsf/facelets" xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:ST="http://java.sun.com/jsf/composite/softeam" >
<h:head>
</h:head>
<h:body>
<h:form id="testform">
<h:panelGrid columns="1">
<ui:include src="testtemplate.xhtml">
<ui:param name="bean" value="#{testbean}"/>
</ui:include>
<ST:testButt text="#{testbean.buttText}" action="#{testbean.doAction()}"/>
<h:commandButton value="#{testbean.buttText}" actionListener="#{testbean.doAction()}"/>
</h:panelGrid>
</h:form>
</h:body>
</html>
and a template
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:ST="http://java.sun.com/jsf/composite/softeam">
<ST:testButt text="#{bean.buttText}" action="#{bean.doAction()}"/>
<h:commandButton value="#{bean.buttText}" action="#{bean.doAction()}" />
</ui:composition>
and the component
<!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://java.sun.com/jsf/html" xmlns:S="http://xmlns.jcp.org/jsf/composite" >
<S:interface>
<S:attribute name="action" method-signature="void action()"/>
<S:attribute name="text" type="java.lang.String"/>
</S:interface>
<S:implementation>
<h:commandButton style="display:inline-block"
value="#{cc.attrs.text}"
actionListener="#{cc.attrs.action}"
/>
</S:implementation>
</html>
All buttons will be shown (with the bean.buttText()) but only the second, third and fourth will call the action. The first button throws an exception when clicked.
Edit: Example reduced to JSF, no PrimeFaces components.
This question already has answers here:
Creating master-detail pages for entities, how to link them and which bean scope to choose
(2 answers)
Closed 6 years ago.
I am using JSF 2.0 and have a simple TestButton.xhtml like below:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<ui:composition 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:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:body>
<h:form>
<h:inputText value="#{employee.empName}"/><br/>
<h:commandButton value="Derive" action="EmployeeTest2" >
<f:param name="Name" value="#{employee.empName}"/>
</h:commandButton>
</h:form>
</h:body>
</ui:composition>
And a Managed bean which is view scoped.
#ManagedBean(name="employee", eager=true)
#ViewScoped
public class Employee implements Serializable{
String empName;
String selectedEmployeeName;
public String getSelectedEmployeeName() {
return selectedEmployeeName;
}
public void setSelectedEmployeeName(String selectedEmployeeName) {
this.selectedEmployeeName = selectedEmployeeName;
}
public Employee() {
super();
}
public String getEmpName() {
return empName;
}
public void setEmpName(String empName) {
this.empName = empName;
}
public void manipulate(){
System.out.println("Manipulate called...");
System.out.println(selectedEmployeeName);
this.selectedEmployeeName = this.selectedEmployeeName + " Jr.";
}
Now on click of button, i navigate to EmployeeTest2.xhtml which has following code :
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<ui:composition 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:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<f:view>
<f:metadata>
<f:viewParam name="Name" value="#{employee.selectedEmployeeName}"/>
<f:event type="preRenderView" listener="#{employee.manipulate}"/>
</f:metadata>
</f:view>
<h:body>
<h:inputText value="#{employee.selectedEmployeeName}"/>
</h:body>
</ui:composition>
i get correctly navigated to EmployeeTest2.xhtml but my parameter value is coming as null. I can see that manipulate method is getting called(sysouts get printed) but selectedEmployeeName is null.
Please advise as to what am i missing.
I already referred to below thread and did same but of no help.
https://stackoverflow.com/questions/20880027/passing-parameters-to-a-view-scoped bean-in-jsf
Update 1: Changed
<h:inputText value="Chris"/>
to
<h:inputText value="#{employee.empName}"/>
Put a breakpoint at setter method for selectedEmployee. Setter is not getting called which means param passing is not working.
Update 2 Please see updated testButton.xhtml
?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<ui:composition 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:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:body>
<h:form>
<h:inputText name = "Name" value="#{employee.empName}"/><br/>
<h:commandButton value="Submit" action="EmployeeTest2" >
<f:param name="Name" value="#{employee.empName}"/>
</h:commandButton>
</h:form>
</h:body>
</ui:composition>
The code seems correct, in my opinion you are sending null to the next page because the value of the employee.empName is actually null.
I would debug the getEmpName() method when the TestButton.xhtml is loaded and then additionally check, after you click the button and move on to the next page whether the parameter is present in the url.
UPDATE
Ok the param is actually the value of the input. In that case add name to its definition. You form should look like this:
<h:inputText name="Name" value="#{employee.empName}"/><br/>
<h:commandButton value="Derive" action="EmployeeTest2" />
UPDATE 2
This is a workaround but you can also try this:
#PostConstruct
public void postConstruct(){
Map<String,String> params = FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap();
setSelectedEmployeeName(params.get("Name"));
}
I am doing a simple navigation example in jsf as i am a beginner. i am always getting null when accessing the f:param value in the managedBean using ManagedProperty
home.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:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/facelets">
<head>
<title>JSF Tutorial!</title>
</head>
<body>
<h3>Using JSF outcome</h3>
<h:form>
<h:commandButton action="#{navigation.show}" value="Page1">
<f:param name="pageId" value="1" />
</h:commandButton>
<h:commandLink action="#{navigation.show}" value="Page2">
<f:param name="pageId" value="2" />
</h:commandLink>
<h:commandLink action="#{navigation.show}" value="Home">
<f:param name="pageId" value="3" />
</h:commandLink>
</h:form>
Navigation.java
package com.jason.jsf;
import java.util.Map;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ManagedProperty;
import javax.faces.bean.RequestScoped;
import javax.faces.context.FacesContext;
#ManagedBean(name = "navigation", eager = true)
#RequestScoped
public class Navigation {
#ManagedProperty(value = "#{param.pageId}")
private String pageId;
public String show() {
System.out.println("page id" + value);
if (pageId == null) {
return "home";
}
if (pageId.equals("1")) {
return "page1";
} else if (pageId.equals("2")) {
return "page2";
} else {
return "home";
}
}
public String getPageId() {
return pageId;
}
public void setPageId(String pageId) {
System.out.println("page id set" + pageId);
this.pageId = pageId;
}
}
How is this caused and how can I solve it? I am using jsf2.2 Mojarra 2.0.3.there are other sample page1.xhtml and page2.xhtml just for navigation with me
Thanks in advance
Look closer at the XML namespace prefix and the URI and compare with whatever is shown in a decent JSF book/tutorial/resource:
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/facelets">
Yes, the XML namespace URI for the f: prefix is wrong. You declared it to be the one of Facelets tags which have usually ui: prefix. This basically causes those tags to not be properly interpreted at all. It's being misinterpreted as an <ui:param> which has an entirely different meaning than the real <f:param>.
Fix the taglib URI. It needs to be http://java.sun.com/jsf/core. Here's the complete set:
<html 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">
See also:
Our JSF wiki page - contains a Hello World
Unrelated to the concrete problem, Mojarra 2.0.3 is not JSF 2.2. It's JSF 2.0. And a rather old implementation too, over 5 years already. You can get latest Mojarra 2.2 (currently 2.2.11) at http://javaserverfaces.java.net. After that, you can change the domain in taglib URIs from java.sun.com to xmlns.jcp.org:
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://xmlns.jcp.org/jsf/core"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets">
Greeting,
i have created a JSF composite component that takes an object of custom made class, and views its content, everything went good but i need the component to call the set method in the bean holding the custom class object.
Sample Example :
1- the component - componentTest.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:h="http://java.sun.com/jsf/html"
xmlns:composite="http://java.sun.com/jsf/composite">
<composite:interface>
<composite:attribute name="valueHolder" required="true" type="com.max.ValueHolder" />
</composite:interface>
<composite:implementation>
<h:inputText value="#{cc.attrs.valueHolder.value}" />
</composite:implementation>
</html>
notice that the component use an attribute of a custom type :
<composite:attribute name="valueHolder" required="true" type="com.max.ValueHolder" />
2- the test page - default.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:h="http://java.sun.com/jsf/html"
xmlns:max="http://java.sun.com/jsf/composite/max" >
<h:body>
<h:form target="#self">
<max:componentTest valueHolder="#{user.valueHolder}" />
<h:commandButton value="test" action="#{myBean.action}" />
</h:form>
</h:body>
</html>
and finally the bean - MyBean.java :
package com.max;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import com.max.ValueHolder;
#ManagedBean(name="myBean")
#SessionScoped
public class MyBean{
private ValueHolder valueHolder= new ValueHolder();
public ValueHolder getValueHolder() {
return valueHolder;
}
public void setValueHolder(ValueHolder valueHolder) {
this.valueHolder = valueHolder;
}
public String action(){
return "default";
}
}
My problem is that the method Mybean.setValueHolder() is not being called as the h:inputText is holding the value within the ValueHolder not the ValueHolder itself.
and i have tried setting the value with something like
<c:set var="cachedValueHolder" value="${cc.attrs.valueHolder}"/>
<a4j:ajax event="change" >
<a4j:param value="#{cachedValueHolder}" assignTo="#{cc.attrs.valueHolder}" />
</a4j:ajax>
but it didnt work im not sure why!
Regards
I have main page that looks like this:
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.or/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.prime.com.tr/ui">
<h:head>
<title>Facelet Title</title>
</h:head>
<h:body>
<h:form>
<p:panel id="panel">
<ui:include src="#{bean.page}">
</ui:include>
</p:panel>
<p:commandButton actionListener="#{bean.changePage}" value="Push" ajax="true" update="panel"/>
</h:form>
</h:body>
</html>
What I want to do is have a bean like this and change dynamically which page is included. This is how bean looks like:
#ManagedBean
#SessionScoped
public class Bean {
private String page = "";
public Bean() {
}
public String getPage() {
return page;
}
public void setPage(String page) {
this.page = page;
}
public void changePage(ActionEvent e) {
page = "Page.xhtml";
}
}
When I click button Push I want this page to be included:
<?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://java.sun.com/jsf/html"
xmlns:ui="http://java.sun.com/jsf/facelets">
<h:head>
<title>Facelet Title</title>
</h:head>
<h:body>
<h:form>
<ui:component>
Hello from facelets
</ui:component>
</h:form>
</h:body>
Problem is that I have to press the button twice for page to be included. How can this be done so when I press the button the first time page is included?
This kind of templating is normally achieved using the <ui:insert> and <ui:define> tags. Check out this page of the Java EE tutorial.