After a long time I'm using a4j:ajax to get simple text from h:inputText and render to h:outputText but it's not working
I found many examples like this but none of them worked for me.
this id my bean
import javax.faces.bean.*;
#ManagedBean(name="usertest")
#RequestScoped
public class UserBean {
private String name = "john";
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
and this is my index.xhtml
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!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/core"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
<h:head>
</h:head>
<body>
<h:form id="f1">
<h:inputText id="name1" value="#{usertest.name}">
<a4j:ajax event="keyup" render="name2" execute="#form"></a4j:ajax>
</h:inputText>
<h:outputText id="name2" value="#{usertest.name}"></h:outputText>
</h:form>
</body>
</html>
I'm using JSF 2.0 and RichFaces 4.0
Any solution would help me.
Tanks
Related
I want to pass selectedExamId from chooseexam page to exam page, what is the good way to do that? is it a good practice to use two baking bean for single jsf page?
One more thing is I am getting same Question list each time?
I have following jsf page
chooseExam.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 lang="en"
xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core">
<h:head>
</h:head>
<h:body>
<ui:composition template="/templates/admin/template.xhtml">
<ui:define name="content">
<h:selectOneRadio value="#{examBean.selectedExamId}">
<f:selectItems value="#{chooseExamBean.exams}" var="exam" itemValue="#{exam.examId}" itemLabel="#{exam.examName}"/>
</h:selectOneRadio>
<h:commandButton value="Submit" action="/user/exam?faces-redirect=true"/>
</ui:define>
</ui:composition>
</h:body>
</html>
and
exam.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 lang="en"
xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core">
<h:head>
</h:head>
<h:body>
<ui:composition template="/templates/admin/template.xhtml">
<ui:define name="content">
<ui:repeat value="#{examBean.questions}" var="question">
<h:outputLabel value="#{question.question}"/>
<h:selectOneRadio value="#{examBean.questionAnswerMap[question]}">
<f:selectItem itemValue="#{question.choice1}" itemLabel="#{question.choice1}"/>
<f:selectItem itemValue="#{question.choice2}" itemLabel="#{question.choice2}"/>
<f:selectItem itemValue="#{question.choice3}" itemLabel="#{question.choice3}"/>
<f:selectItem itemValue="#{question.choice4}" itemLabel="#{question.choice4}"/>
</h:selectOneRadio>
</ui:repeat>
<h:commandButton value="Submit" action="#{examBean.calculate}"/>
</ui:define>
</ui:composition>
</h:body>
</html>
following are the backing beans
ChooseExamBean.java
#Component
#ManagedBean
public class ChooseExamBean {
List<Exam> exams;
#Autowired
private ExamService examService;
#PostConstruct
public void init(){
exams = examService.getAllExams();
}
public List<Exam> getExams() {
return exams;
}
public void setExams(List<Exam> exams) {
this.exams = exams;
}
}
and
ExamBean.java
#Component
#ManagedBean
public class ExamBean {
private List<Question> questions;
private Map<Question, String> questionAnswerMap = new HashMap<>();
private int score;
private Long selectedExamId;
#Autowired
private QuestionService questionService;
#PostConstruct
public void init() {
if(selectedExamId != null)
questions = questionService.getQuestionsForExam(selectedExamId);
}
public Map<Question, String> getQuestionAnswerMap() {
return questionAnswerMap;
}
public void setQuestionAnswerMap(Map<Question, String> questionAnswerMap) {
this.questionAnswerMap = questionAnswerMap;
}
public List<Question> getQuestions() {
if(questions == null)
questions = questionService.getQuestionsForExam(selectedExamId);
return questions;
}
public void setQuestions(List<Question> questions) {
this.questions = questions;
}
public int getScore() {
return score;
}
public void setScore(int score) {
this.score = score;
}
public Long getSelectedExamId() {
return selectedExamId;
}
public void setSelectedExamId(Long selectedExamId) {
this.selectedExamId = selectedExamId;
}
public String calculate() {
score = questionAnswerMap.size();
return "result?faces-redirect=true";
}
}
Since you are using a RequestScope Beans for the (ExamBean and the ChooseExamBean) you cant keep the values after the response , so you should user the viewParam tag to pass the value from the first page to the second page.
you should make something like the following :
1- the ChooseExam.jsf , you have your radioButtons that will save its value in the chooseExamBean :
<f:view xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html">
<html xmlns="http://www.w3.org/1999/xhtml">
<h:head></h:head>
<h:body>
<h:form>
<h:selectOneRadio label="examType" value="#{chooseExamBean.examNumber}">
<f:selectItem itemLabel="exam1" itemValue="1"/>
<f:selectItem itemLabel="exam2" itemValue="2"/>
</h:selectOneRadio>
<h:commandButton value="commandButton1" action="#{chooseExamBean.navigateToExamPage}" />
</h:form>
</h:body>
</html>
</f:view>
2- in the action of the commandButton you will call a method in the bean to navigate , before navigation you will append a param to the url like the following in the navigateToExamPage method :
#ManagedBean(name = "chooseExamBean")
#RequestScoped
public class ChooseExamBean {
public ChooseExamBean() {
super();
}
private String examNumber;
public void setExamNumber(String examNumber) {
this.examNumber = examNumber;
}
public String getExamNumber() {
return examNumber;
}
public Object navigateToExamPage() {
return "exam?faces-redirect=true&examId="+getExamNumber();
}
}
3- in the exam.jsf page , you have to get the value of the parameter , here you will use the tag like the following :
<f:view xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html">
<html xmlns="http://www.w3.org/1999/xhtml">
<h:head></h:head>
<h:body>
<h:form>
<f:metadata>
<f:viewParam name="examId" value="#{examBean.examNumber}"/>
<f:event type="preRenderView" listener="#{examBean.onLoad}" />
</f:metadata>
<h:outputText value="#{examBean.examNumber}"/>
</h:form>
</h:body>
</html>
</f:view>
the view param have to attributes :
1- name :which is the name of the parameter that you want to get from the url.
2- value :which is where you want to set the value of the parameter.
so in our case the name is "examId" and we want to set the value in "examBean.examNumber" .
here you will find a problem if you didnt use tag , because you want to get the examId onPage Load in the postConstrct method , but the f:param will be called after the postConstruct , so we have to use the like the following :
<f:event type="preRenderView" listener="#{examBean.onLoad}" />
this will help us to perform custom task before a JSF page is displayed.
4- in you examBean :
#ManagedBean(name = "examBean")
#RequestScoped
public class ExamBean {
public ExamBean() {
super();
}
private String examNumber;
public void setExamNumber(String examNumber) {
this.examNumber = examNumber;
}
public String getExamNumber() {
return examNumber;
}
public void onLoad () {
System.out.println("onLoad = "+getExamNumber());
}
}
Please use this with your requirements and everything will go smooth.
Please refer to the following answer here, here and here .
Hope that Helps.
I am working in JSF, But i am not able to get the property values from t:saveState whenever managed bean is in request scope.
Here is my managed bean class:
#ManagedBean(name="demoBean")
#RequestScoped
public class DemoBean {
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String submitButton() {
System.out.println("submitButton method");
return "nextPage";
}
}
index.xhtml page is here
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:t="http://myfaces.apache.org/tomahawk">
<head>
</head>
<body>
<t:saveState value="#{demoBean.name}"></t:saveState>
<h:form id="demoForm">
<t:outputLabel value="Name:" style="font-weight:bold"></t:outputLabel>
<t:inputText value="#{demoBean.name}" id="txt"></t:inputText>
<t:commandButton value="Submit" action="#{demoBean.submitButton}"></t:commandButton>
</h:form>
</body>
</html>
NextPage.xhtml is here
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:t="http://myfaces.apache.org/tomahawk">
<head>
<title>Insert title here</title>
</head>
<body>
<h:form>
<h:outputLabel value="I am here #{demoBean.name}"></h:outputLabel>
</h:form>
</body>
</html>
Any help will be useful
I realize this is an old post, but don't you just have to add
<t:saveState value="#{demoBean.name}"></t:saveState>
to the Nextpage.xhtml per http://wiki.apache.org/myfaces/SaveState ?
I am building a web app based on ICEmobile with JSF 2.1 and Maven. I'm running into this problem when my jsf page doesn't look for its bean but I still can build and deploy the project with no errors, I deploy the project via run configuration in Eclipse: clean tomcat7:run-war. Even if I declare the bean via annotation or applicationContext.xml, the page still doesn't call the bean correctly. I can get the value of the field in the bean but cannot call the method within that bean System.out.println("Pressed"); gives no output to the console. I'm guessing it must be something to do with my configuration but I don't know where to look into. Please give me some hints. Thanks
<!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/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:util="http://java.sun.com/jsf/composite/components"
xmlns:mobi="http://www.icesoft.com/icefaces/mobile/component"
xmlns:ice="http://www.icesoft.com/icefaces/component"
xmlns:icecore="http://www.icefaces.org/icefaces/core">
<h:head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"></meta>
<meta name="viewport"
content="width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=0" />
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black" />
<title>ICEfaces Mobile Showcase</title>
<mobi:deviceStylesheet media="screen" />
</h:head>
<h:body>
<mobi:pagePanel>
<f:facet name="body">
<h:form>
<mobi:commandButton value="#{buttonBean.buttonName}" buttonType="important" actionListener="#{buttonBean.buttonPress}">
<f:attribute name="buttonState" value="change"/>
</mobi:commandButton>
</h:form>
</f:facet>
</mobi:pagePanel>
</h:body>
</html>
The Bean:
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import javax.faces.event.ActionEvent;
#ManagedBean(name = ButtonBean.BEAN_NAME)
#SessionScoped
public class ButtonBean implements Serializable {
private static final long serialVersionUID = 1L;
public static final String BEAN_NAME = "buttonBean";
private String buttonName = "0";
public String getButtonName() {
return buttonName;
}
public void setButtonName(String buttonName) {
this.buttonName = buttonName;
}
public void buttonPress(ActionEvent event){
System.out.println("Pressed");
String buttonState = (String)event.getComponent().getAttributes().get("buttonState");
if (buttonState.equals("change") && buttonName.equals("0")) buttonName = "1";
else if (buttonState.equals("change") && buttonName.equals("1")) buttonName = "0";
}
}
I found out that my web.xml was set as version 2.5. Change to version 3.0. All works now
I have just created a NetBeans project with JSF 2.0 and I have a problem with f:validateRequired. The bean
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
#ManagedBean
#RequestScoped
public class TestBean {
private String value;
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
public String action() {
return "test";
}
}
and the page
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<h:head>
<title>Test</title>
<h:outputStylesheet name="css/stylesheet.css" />
</h:head>
<h:body>
<h:form>
<div id="content">
Value:
<h:message for="test" />
<h:inputText value="#{testBean.value}" id="test">
<f:validateRequired />
</h:inputText>
<br/>
<h:commandButton action="#{testBean.action}" value="Action" />
</div>
</h:form>
</h:body>
</html>
seems to be allright, but the h:message isn't there until I supply the requered="true" attribute on the inputText. What I am missing? Why the validation does not occure whithout the requered="true" attribute?
I figured the answer: fields with empty input are not validated at all by default. If you wish to validate such field you have to set required=true. See UIInput.validateValue() JavaDoc
You can enable the validation of empty fields by setting the javax.faces.VALIDATE_EMPTY_FIELDS context parameter to true. See JavaDoc. After doing that the example above works as expected.
I know this post is kind of old, but I'm using MyFaces and apparently javax.faces.VALIDATE_EMPTY_FIELDS is set to false by default.
I'm a beginner in Java EE 6 and was recently playing with conversations. I was not able to find out how to start conversation immediately as JSF page is loaded (as in Seam). Is this doable?
It's doable.
Page:
<?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:f="http://java.sun.com/jsf/core">
<f:view contentType="text/html">
<f:metadata>
<f:event type="preRenderView" listener="#{myBean.preRenderView}"/>
</f:metadata>
<h:head>
<title>My Page</title>
</h:head>
<h:body>
<!-- Body here -->
</h:body>
</f:view>
</html>
Bean:
import java.io.Serializable;
import javax.enterprise.context.Conversation;
import javax.enterprise.context.ConversationScoped;
import javax.faces.event.ComponentSystemEvent;
import javax.inject.Inject;
import javax.inject.Named;
#Named
#ConversationScoped
public class MyBean implements Serializable {
public void preRenderView(ComponentSystemEvent e) {
String currentViewId = FacesContext.getCurrentInstance().getViewRoot().getViewId();
if (CONVERSATION_START_PAGE.equals(currentViewId)) {
conversation.begin();
}
#Inject
private Conversation conversation;
private static final String CONVERSATION_START_PAGE = "/foo/bar/start-page.xhtml";
}