如何在BackBean中使用SelectMany 对象?
Hi.
This page was made fast and I hope don't be a nuisance to someboby
首先我们定义backbean来管理我们的 selectMany "list" :
<managed-bean>
<managed-bean-name>Manager</managed-bean-name>
<managed-bean-class>demo.Manager</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
<managed-bean>
现在Manager类应该有个 SelectMany object来管理信息;
package demo;
import javax.faces.component.UISelectMany;
import javax.faces.component.UIComponent;
class Manager{
private UISelectMany list;
/*
* Here we must create our list of objects
* obviously we may add a cycle "while" or "for"
* if we wouldn't know the number of items
*/
public UIComponentBase getList(){
list=new UISelectMany();
SelectItem item = new SelectItem( "value", "Description" );
UISelectItem uiItem = new UISelectItem();
uiItem.setValue( item );
list.getChildren().add( uiItem );
return list;
}
public void setList(UIComponentBase list){
this.list=(UISelectMany)list;
}
public void actionListener(ActionEvent ev){
Object obj [] = list.getSelectedValues();
// obj is an array of string that contents the values of our selectItems
}
} |
JSP页面的代码如下:
<h:selectManyMenu binding="#{Manager.list}">
如果你想使用CheckBox or a ListBox仅仅在JSF文件中该变标签就可以了.如 <h:selectManyCheckBox> by either <h:selectManyListbox> or <h:selectManyCheckbox>, it is great!!
WRITTEN BY JOSE HERNAN VALDES MURGUIA. CBBA-BOLIVIA.
Hitoriki in jsf's java's forum
