我的代码是这样的:动态菜单项和ActionExpression
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.prime.com.tr/ui">
<h:head>
<title>Facelet Title</title>
</h:head>
<f:view contentType="text/html">
<h:body>
<h:form>
<p:menu model="#{menuBean.model}"/>
</h:form>
</h:body>
</f:view>
</html>
我的管理bean是这样的:
@ManagedBean
@RequestScoped
public class MenuBean {
private MenuModel model;
public MenuBean() {
FacesContext facesCtx = FacesContext.getCurrentInstance();
ELContext elCtx = facesCtx.getELContext();
ExpressionFactory expFact = facesCtx.getApplication().getExpressionFactory();
model = new DefaultMenuModel();
Submenu submenu = new Submenu();
submenu.setLabel("Dynamic Submenu 1");
MenuItem item = new MenuItem();
item.setValue("Dynamic Menuitem 1.1");
item.setAjax(false);
item.setActionExpression(expFact.createMethodExpression(elCtx, "#{menuBean.add}", String.class, new Class[0]));
item.setUrl("#");
submenu.getChildren().add(item);
model.addSubmenu(submenu);
submenu = new Submenu();
submenu.setLabel("Dynamic Submenu 2");
item = new MenuItem();
item.setValue("Dynamic Menuitem 2.1");
item.setAjax(false);
item.setActionExpression(expFact.createMethodExpression(elCtx, "#{menuBean.add}", String.class, new Class[0]));
item.setUrl("#");
submenu.getChildren().add(item);
item = new MenuItem();
item.setValue("Dynamic Menuitem 2.2");
item.setAjax(false);
item.setActionExpression(expFact.createMethodExpression(elCtx, "#{menuBean.add}",Void.class, new Class[]{Object.class,String.class}));
item.setUrl("#");
submenu.getChildren().add(item);
model.addSubmenu(submenu);
}
public MenuModel getModel() {
return model;
}
public String add(Object obj,String nodeId) {
return null;
}
}
运行此代码时,我点击菜单项,方法add()
是永远不会被执行。
是什么原因?
我改变了代码,返回类型为String,参数为对象和String ....但不工作,添加方法 – Shemil