How to pass value from session bean into JSF inputText?

Question

I have an inputText object in JSF, let say inputText_A, and the value is bind to the session Bean object's member variable. It is a type of double.

<h:inputText value="#{theBean.theMemberVar}" />

And this inputText_A has been initialize to 0.0. When theBean is performing a calculation, the value will be updated back to theBean.theMemberVar. I have trace it back in the debug console and the value has been updated to my expected value. But the inputText_A at the screen still showing original value, which is 0.0.

I have tested using outputText, my expected output is showing there but it become read only on the screen after that. I want it to be editable after my expected output has populate into inputText_A, thus I choose inputText object.

I understand that when we pass some value from JSF to Bean, we use inputText, and when some value is pass out from Bean to JSF, we use outputText. But now I want to pass the value from Bean to JSF using inputText. May I know can this be done?

Fallup · Accepted Answer · 2012-04-14 13:21:46Z

It is completely fine to display some updated value via h:inputText (if you need such functionality). You just have to have appropriate getter and setter for the bean variable.

So for example :

private String text; // here you will update the input text - in your case method which does calculations public void changeText(){ ... text = "updated"; } public String getText() { return text; } public void setText(String text) { this.text = text; }

And your facelet (.xhtml) :

 <h:inputText value="#{dummyBean.text}" /> <h:commandButton value="Change text" actionListener="#{dummyBean.changeText}" />

Your inputText will be updated on button click.

Other thing is if you are updating your content via Ajax. Then you need to re-render the parent component of the inputText or the form of the inputText :

 <h:commandButton immediate="true" value="Change text"> <f:ajax event="click" render=":formID" listener="#{dummyBean.changeText}"/> </h:commandButton>

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