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中没有返回值我有一个获取f:selectItems的值的问题,但它返回它的标签。
这里是代码;<f:selectItems在<p:selectOneMenu>
<p:selectOneMenu>.
<p:outputLabel value="Major Diseases"></p:outputLabel>
<p:selectOneMenu value="#{dataMigeration.mdId}">
<f:selectItem itemLabel="Select One" itemValue="" />
<f:selectItems var="t"
value="#{dataMigeration.majorDiseas}"
itemLabel="#{t.value.mdName}"
itemValue="#{t.value}"/>
<p:ajax listener="#{dataMigeration.getSubDiseasesByMojarDisease(dataMigeration.mdId)}"
event="change" update="dataMigration"/>
</p:selectOneMenu>
这里是dataMigeration类
@ManagedBean(name="dataMigeration")
@SessionScoped
public class DataMigeration{
String mdId;
private List<SelectItem> majorDiseas = new ArrayList<SelectItem>();
public List<SelectItem> getMajorDiseas() {
majorDiseas = new ArrayList<SelectItem>();
System.out.println("DataMigeration.getMajorDiseas():");
List<DiseaseCategory> majorDiseasesList = new ArrayList<DiseaseCategory>();
majorDiseasesList=DataManager.findAllRecords();
for (DiseaseCategory obj : majorDiseasesList) {
majorDiseas.add(new SelectItem(obj.getMdId(), obj.getMdName()));
}
return majorDiseas;
}
public void getSubDiseasesByMojarDisease(String mdId)
{
System.out.println("\n\n\n\n | value:"+mdId);
}
,但我得到的MDID = F的itemLabel:将selectedItem但我希望得到的F项目值:selectem。我之前做过的一些事情,但我现在忘了如何获得ItemValue。