Primefaces selectManyMenu默认选择

Question

p:selectedManyManu 是否允许默认选择？我一直无法实现这一点。我甚至尝试了 Omnifaces ListConverter 和 selectItemsConverter，但都没有成功。任何帮助或指针都将不胜感激。页面加载时可以默认选择多个项目。这是我的代码：

POJO:

public class LocationRef implements Serializable{
private integer Seqid;
private String locname;
private String locaddress;
private String phonenumber;

//getters and setters
//tostring
//equals, hashcode

后端bean:

public class SelectionBean implements Serializable {
private List<LocationRef> selectedLocations;
private List<LocationRef> allLocations;

@PostConstruct
public void init() {
    selectedLocations = new ArrayList<LocationRef>();
    allLocations = new ArrayList<LocationRef>();
    selectedLocation = dao.getSelectedLocation(idList);
    allLocation = dao.getAllLocations();
}

public List<LocationRef> getSelectedLocations() {
    return selectedLocations;
}
public List<LocationRef> getAllLocations() {
    return allLocations;
}
public void setAllLocations(List<LocationRef> allLocations) {
    this.allLocations = allLocations;
}
}

XHTML：

<p:selectManyMenu  id="location" value="#{SelectionBean.selectedLocations}" 
               converter="omnifaces.SelectItemsConverter"
               showCheckbox="true" style="width: 220px" 
               >
<f:selectItems value="#{SelectionBean.allLocations}" var="loc" 
               itemValue="#{loc.locationSeqid}"
               itemLabel="#{loc.sitename}"/>       
</p:selectManyMenu>

- Tandina

Answer 1

您的<f:selectItems itemValue>不正确。它应该表示您想在<p:selectManyMenu value>后面单独设置的相同值。

这应该可以解决问题：

itemValue="#{loc}"

omnifaces.SelectItemsConverter 是正确的转换器。 omnifaces.ListConverter 只适用于那些不使用 <f:selectItem(s)> 作为子元素，而是使用“普通”List作为自己属性的组件，例如 <p:autoComplete> 和 <p:pickList>。

- BalusC

---

就是这样。将selectManyMenu的值设置为与selectItems ItemValue相同类型（集合）解决了问题。谢谢。 - Tandina