调用了selectedRestaurant
的setter方法,但菜单只是翻转而不呈现<h:outputText>
。菜单包含内容,因此<f:selectItems>
中使用的列表不为空。当我使用omnifaces.SelectItemsConverter
时,我认为这不是由于转换问题。
这是我的JSF代码:
<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.org/ui">
<h:head />
<h:body>
<h:panelGroup id="adminOneMenu" layout="block">
<h:form>
<p:selectOneMenu value="#{bugBean.selectedRestaurant}" converter="omnifaces.SelectItemsConverter">
<f:selectItem itemValue="" itemLabel="Restaurant wählen"/>
<f:selectItems value="#{bugBean.restaurants('London')}" var="restaurant" itemLabel="#{restaurant.screenName}"/>
<p:ajax update=":adminOneMenu"/>
</p:selectOneMenu>
<h:outputText value="#{bugBean.selectedRestaurant.screenName}" />
</h:form>
</h:panelGroup>
</h:body>
</html>
这是支持bean:
package huhu.main.managebean;
import java.io.Serializable;
import java.util.List;
import javax.ejb.EJB;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import huhu.model.generated.Restaurant;
import huhu.service.RestaurantService;
@Named
@SessionScoped
public class BugBean implements Serializable {
private static final long serialVersionUID = 1L;
private Restaurant selectedRestaurant;
@EJB
RestaurantService rs;
public List<Restaurant> getRestaurants(String city){
List<Restaurant> restaurants;
restaurants = rs.getRestaurantsInCity(city);
return restaurants;
}
public Restaurant getSelectedRestaurant() {
return selectedRestaurant;
}
public void setSelectedRestaurant(Restaurant selectedRestaurant) {
this.selectedRestaurant = selectedRestaurant;
}
}
答案 0 :(得分:3)
如果存在转换错误,则应收到错误消息。
你是否在Class餐厅实现了#equals()和#hashcode()?