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POJSF 2.0 backing bean method not executed for programmatically created UI element
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  1. POJSF 2.0 backing bean method not executed for programmatically created UI element
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    copied!<p>I am using JSF's java classes to create UI elements for a simple HTML page as shown below. However the methods Bean::save() and Item.setValue(...) aren't executed.</p> <p>item.xhtml</p> <pre><code>&lt;!DOCTYPE html&gt; &lt;html xmlns="http://www.w3.org/1999/xhtml" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html"&gt; &lt;h:head&gt; &lt;title&gt;Test&lt;/title&gt; &lt;/h:head&gt; &lt;h:body&gt; &lt;h:panelGroup binding="#{bean.htmlPanelGroup}" /&gt; &lt;/h:body&gt; &lt;/html&gt; </code></pre> <p>Bean.java</p> <pre><code>@ManagedBean(name="bean") @ViewScoped public class Bean implements Serializable { private final Item item = new Item(1L, "hello"); public void save() { // this method is not executed when the save button created below is clicked. System.out.println("item.value = " + item.getValue()); } public Item getItem() { return this.item; } transient HtmlPanelGroup htmlPanelGroup; public void setHtmlPanelGroup(HtmlPanelGroup htmlPanelGroup) { this.htmlPanelGroup = htmlPanelGroup; } public HtmlPanelGroup getHtmlPanelGroup() { if (htmlPanelGroup == null) { FacesContext facesContext = FacesContext.getCurrentInstance(); htmlPanelGroup = new HtmlPanelGroup(); HtmlForm editForm = new HtmlForm(); HtmlInputText value = new HtmlInputText(); ValueExpression valueExpr = facesContext.getApplication().getExpressionFactory() .createValueExpression(facesContext.getELContext(), "#{bean.item.value}", String.class); value.setValueExpression("value", valueExpr); editForm.getChildren().add(value); HtmlCommandButton save = new HtmlCommandButton(); save.setValue("save"); MethodExpression methodExpr = facesContext.getApplication().getExpressionFactory() .createMethodExpression(facesContext.getELContext(), "#{bean.save}", String.class, new Class&lt;?&gt;[]{}); save.setActionExpression(methodExpr); editForm.getChildren().add(save); htmlPanelGroup.getChildren().add(editForm); } return htmlPanelGroup; } } </code></pre> <p>Item.java</p> <pre><code>public class Item implements Serializable { private long id; private String value; public Item(long id, String value) { this.id = id; this.value = value; } public String getValue() { return value; } public void setValue(String value) { this.value = value; } public long getId() { return id; } public void setId(long id) { this.id = id; } } </code></pre>
 

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