Input given in JSF page does not set that value to managed bean variable

Question

Am a newbie to JSF. Am using JSF 2 and primefaces 4.0 in my application. As stated in the Title, the input value given in the xhtml page, does not set the value to the ManagedBean. I have tried all the possible combination.

growlMessage.xhtml

<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:p="http://primefaces.org/ui">
    <h:head>

    </h:head>

   <h:body>
    <h:form> 
  <p:growl id="growl" showDetail="true" sticky="true" />  

    <p:panel id="panelID" header="Growl">  
        <h:panelGrid columns="2" cellpadding="5">  
            <h:outputLabel for="msg" value="Message:" />   
            <p:inputText id="msg" value="#{growlView.message}" required="true" />  
        </h:panelGrid>  
      <p:commandButton value="Save" actionListener="#{growlView.saveMessage}"/>  
    </p:panel> 

   </h:form>  
    </h:body>
</html>

` GrowlView.java:

import java.io.Serializable;
import javax.faces.application.FacesMessage;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;
import javax.faces.context.FacesContext;


@ManagedBean
@ViewScoped
public class GrowlView implements Serializable{

    private String message;

    public GrowlView() {
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }


    public void saveMessage(){
        System.out.println("@@@@@  hello");
        System.out.println("@@@@@"+ getMessage());
        FacesContext context = FacesContext.getCurrentInstance();
        context.addMessage(null, new FacesMessage("Successful", "Your message: "+message));
        context.addMessage(null, new FacesMessage("Second message", "Additional Message details"));
     }
  }

Jaqen H'ghar · Answer 1 · 2014-06-07T14:55:27.210

0

Do you have a good reason to use JSF 2.0 instead of 2.2? You should use CDI instead of JSF managed beans, which is more or less deprecated. So, use

@Named
@ViewScoped
public class GrowlView implements Serializable

Be sure the ViewScoped annotation is from javax.faces.view. And the beginning of the xhtml should use the new namespace:

<html xmlns="http://www.w3.org/1999/xhtml"
  xmlns:h="http://xmlns.jcp.org/jsf/html"
  xmlns:p="http://primefaces.org/ui">

edited Jun 07 '14 at 14:55

answered Jun 07 '14 at 14:50

Jaqen H'ghar

4,293
2
12
24

1

Why should he do that? JSF 2.0 works fine. You don't always have to add such huge things like CDI to your project if it isn't crucial. – LarsBauer Jun 07 '14 at 15:32
Because I tested his code and only got it working when doing this. Oh, and because it is recommended to move towards CDI: https://weblogs.java.net/blog/mriem/archive/2013/10/30/jsf-tip-30-migrate-your-managedbean-named-annotations and http://stackoverflow.com/questions/4347374/backing-beans-managedbean-or-cdi-beans-named. For at beginner it gives no meaning AT ALL to start out with JSF managed beans, unless you know you are going to maintain an existing system. But thank you very much for the downvote. – Jaqen H'ghar Jun 07 '14 at 15:34
In this easy example CDI won't be necessary. – LarsBauer Jun 07 '14 at 15:36
Thanks for everyone's effort. I found the solution and my application is running correctly – Mogana Jun 10 '14 at 06:40

score 0 · Answer 2 · answered Jun 07 '14 at 15:20

Your commandButton should look like this (according to PrimeFaces showcase):

<p:commandButton value="Save" actionListener="#{growlView.saveMessage}" update="growl"/>

Have you tried setting a larger scope to your managed bean, for example @SessionScoped ? (just for testing purposes). So you could exclude a possible scope problem.

score 0 · Answer 3 · answered Jun 09 '14 at 14:41

0

try this following code: using the process and partialSubmit attributes:

<p:commandButton value="Save" actionListener="#{growlView.saveMessage}" update="growl" process="@form" partialSubmit="true"/>

answered Jun 09 '14 at 14:41

Tiago Vieira Dos Santos

914
1
8
18

sghaier ali · Answer 4 · 2014-06-07T12:49:32.383

-1

hy,

change for

 <html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:p="http://primefaces.org/ui">
    <h:head>

    </h:head>

   <h:body>
    <h:form> 
  <p:growl id="growl" showDetail="true" sticky="true" autoUpdate="true"/>  

    <p:panel id="panelID" header="Growl">  
        <h:panelGrid columns="2" cellpadding="5">  
            <h:outputLabel for="msg" value="Message:" />   
            <p:inputText id="msg" value="#{pageView.message}" required="true" />  
        </h:panelGrid>  
      <p:commandButton value="Save" action="#{pageView.saveMessage}" update="growl"/>  
    </p:panel> 

   </h:form>  
    </h:body>
</html>

and replace

@ManagedBean

with

@ManagedBean(name="pageView")

edited Jun 07 '14 at 12:49

answered Jun 07 '14 at 12:13

sghaier ali

433
2
14

Thanks for your solution. unfortunately this solution does not work.Managed bean doesn't get fired. – Mogana Jun 07 '14 at 12:20
give me what you have see in the console – sghaier ali Jun 07 '14 at 12:30
I dint get any Result. when I press save button, it has to show the message which I gave as input. but it doesn't do anything. It seems the bean doesn't get fired – Mogana Jun 07 '14 at 12:34
you see in the console this: @@@@@ hello ? – sghaier ali Jun 07 '14 at 12:40
No . The content given in the S.O.P statement is not getting printed. saveMessage() method doesnot get invoked – Mogana Jun 07 '14 at 12:43
ok, i have update my responce try it – sghaier ali Jun 07 '14 at 12:50
No. Still it doesn't work – Mogana Jun 07 '14 at 13:03
verify your console javascript if she is error, i would more information for help you, you have error in console eclipse or netbeans or in your page, what you read in console?. you can replace '@ViewScoped' with '@SessionScoped' and try – sghaier ali Jun 07 '14 at 13:13
Sorry None of the solution works. I have changed the scope and tried. neither error nor warning is thrown. Thanks for spending your valuable time. – Mogana Jun 07 '14 at 13:31
i think you have another problem not code, if you like send me your project in my email and a see it, – sghaier ali Jun 07 '14 at 13:38

Input given in JSF page does not set that value to managed bean variable

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