ajax无法在jsf中使用

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                        <a href="/questions/2118656/commandbutton-commandlink-ajax-action-listener-method-not-invoked-or-input-value" dir="ltr">commandButton/commandLink/ajax action/listener method not invoked or input value not set/updated</a>
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            <div class="grid--cell mb0 mt8">Closed <span title="2016-03-22 08:06:32Z" class="relativetime">4 years ago</span>.</div>
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i'm using jsf and ajax. I want to catch inputText change, and print text out to console. Here is xhtml file:

<h:form>
      <h:inputText id="name" name="string" value="#{class.string}" >
         <f:ajax listener="#{class.printString}" event="valueChange" execute="name"/>
      </h:inputText>

   </h:form>

and here managedBean, "printString" function

public void printString(AjaxBehaviorEvent event) {

        System.out.println(string);
    }

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Answer 1

Try this:

<h:inputText id="name" name="string" value="#{class.string}" >
  <f:ajax listener="#{class.printString}" event="keyup" execute="name"/>
</h:inputText>

Also change searchString to string in backing method. Because h:inputText have value for string

public void printString(AjaxBehaviorEvent event) {

        System.out.println(searchString);
    }

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