如何在ace:menuButton组件中绑定ace:menuItem
如何在ace:menuButton组件中绑定ace:menuItem
提问于 2014-06-02 20:16:26
在我的Icefaces 3应用程序中，我有一个下拉菜单。我想动态地填充它。在我的ManagedBean中，我有一个定义menuItem的方法。它获取label和actionMethod，并在MenuItem上对它们进行估值。当我启动我的应用程序时，下拉菜单项总是空的。
ManagedBean：
package com.omb.view;
import java.io.Serializable;
import javax.el.MethodExpression;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;
import com.icesoft.faces.component.menubar.MenuItem;
@Controller
@Scope("session")
public class MyBean implements Serializable {
private static final Log logger = LogFactory.getLog(MyBean.class);
private MenuItem menuItem1;
public String initMyBean() {
try {
initMenuItem();
} catch (Exception e) {
logger.error(e.getMessage(), e);
}
}
private void initMenuItem() {
menuItem1 = new MenuItem();
menuItem1.setValue("Menu 1");
MethodExpression actionExpression = FacesUtils.createAction("#{menu1Bean.display}", String.class);
menuItem1.setActionExpression(actionExpression);
}
public MenuItem getMenuItem1() {
return this.menuItem1;
}
public void setMenuItem1(MenuItem menuItem1) {
this.menuItem1 = menuItem1;
}
}FaceUtils
package com.omb.view;
import javax.el.MethodExpression;
import javax.faces.context.FacesContext;
import javax.faces.event.ActionEvent;
import javax.faces.event.MethodExpressionActionListener;
/**
* JSF utilities.
*/
public class FacesUtils {
public static MethodExpression createAction(String actionExpression, Class<?> returnType) {
FacesContext context = FacesContext.getCurrentInstance();
return context.getApplication().getExpressionFactory()
.createMethodExpression(context.getELContext(), actionExpression, returnType, new Class[0]);
}
public static MethodExpressionActionListener createActionListener(String actionListenerExpression) {
FacesContext context = FacesContext.getCurrentInstance();
return new MethodExpressionActionListener(context
.getApplication()
.getExpressionFactory()
.createMethodExpression(context.getELContext(), actionListenerExpression, null,
new Class[] {ActionEvent.class}));
}
}screen.xhtml
<?xml version="1.0" encoding="UTF-8"?>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets">
<body>
<ui:composition>
<ice:form id="headerForm" xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ice="http://www.icesoft.com/icefaces/component"
xmlns:ace="http://www.icefaces.org/icefaces/components"
xmlns:c="http://java.sun.com/jstl/core"
xmlns:ui="http://java.sun.com/jsf/facelets">
<div class="menu">
<ace:menuButton id="menuButton" effect="slide" effectDuration="200" value="Menu Button">
<ace:menuItem binding="#{myBean.menuItem1}"/>
</ace:menuButton>
</div>
</ice:form>
</ui:composition>
</body>
</html>回答 1
Stack Overflow用户
发布于 2014-06-12 15:45:02
最后我使用了一个标准的解决方案：
<ace:menuButton id="menuButton" effect="slide" effectDuration="200" value="Menu Button">
<ace:menuItem value="Menu 1" action="#{myBean.display}"/>
</ace:menuButton>页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/23994374
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