未调用JSF操作方法
我有一个JSF视图,其中包含一个Primefaces数据表和一个命令按钮,如下所示:未调用JSF操作方法,jsf,methods,action,Jsf,Methods,Action,我有一个JSF视图,其中包含一个Primefaces数据表和一个命令按钮,如下所示: <p:messages id="statusMessages" showDetail="true" /> <h:form id="listForm"> <p:panel header="Wellsite List"> <br />
<p:messages id="statusMessages" showDetail="true" />
<h:form id="listForm">
<p:panel header="Wellsite List">
<br />
<h:outputLabel value="Welcome, #{wellsiteController.loggedUser.login}" />
<br />
<br />
<p:dataTable id="dataTable" var="wellsite" value="#{wellsiteController.wellsiteDataTableModel}"
paginator="true" rows="10" selection="#{wellsiteController.wellsite}">
<p:column selectionMode="single" style="width:18px" id="radioSelect" />
<p:column sortBy="#{wellsite.reference}" headerText="Wellsite ID">
<h:outputText value="#{wellsite.reference}" />
</p:column>
<p:column headerText="Allowed Groups">
<h:outputText value="#{wellsite.allowedGroups.toString()}" />
</p:column>
<f:facet name="footer">
<h:panelGrid columns="3">
<p:commandButton id="addWellsite" value="Add New Wellsite" icon="ui-icon-flag" ajax="false" action="#{wellsiteController.showAddWellsite}"/>
<p:commandButton id="editWellsite" value="Edit Selected Wellsite" icon="ui-icon-wrench" ajax="false" action="#{wellsiteController.showEditWellsite}"/>
<p:commandButton id="deleteWellsiteButton" value="Remove Selected Wellsite" icon="ui-icon-trash" onclick="confirmation.show()" type="button"/>
</h:panelGrid>
</f:facet>
</p:dataTable>
<p:spacer height="20" />
</p:panel>
<p:confirmDialog id="confirmDialog" message="Are you sure you want to remove the selected Wellsite along with all it's data?" header="Confirmation" severity="alert" widgetVar="confirmation">
<p:commandButton id="confirm" value="Yes" ajax="false" oncomplete="confirmation.hide()" action="#{wellsiteController.deleteWellsite}" />
<p:commandButton id="decline" value="Cancel" onclick="confirmation.hide()" type="button" />
</p:confirmDialog>
</h:form>
这是控制器:
@ManagedBean(name = "wellsiteController")
@RequestScoped
public class WellsiteController implements Serializable {
private static final long serialVersionUID = 1L;
@ManagedProperty("#{wellsiteDao}")
private WellsiteDao wellsiteDao;
@ManagedProperty("#{userDao}")
private UserDao userDao;
@ManagedProperty("#{groupDao}")
private GroupDao groupDao;
@ManagedProperty("#{userController.loggedUser}")
private UserEnt loggedUser;
private WellsiteEnt wellsite;
private List<WellsiteEnt> wellsiteList;
DualListModel<GroupEnt> pickGroupsModel;
public WellsiteController(){
}
@PostConstruct
public void build(){
wellsite = new WellsiteEnt();
wellsite.setAllowedGroups(new ArrayList<GroupEnt>());
}
/*some getters & setters*/
public WellsiteDataTableModel getWellsiteDataTableModel(){
return new WellsiteDataTableModel(getWellsiteList());
}
public void setPickGroupsModel(DualListModel<GroupEnt> model){
pickGroupsModel = model;
}
public DualListModel<GroupEnt> getPickGroupsModel() {
if(pickGroupsModel == null){
List<GroupEnt> allGroups = groupDao.getAll();
List<GroupEnt> currentGroups = wellsite.getAllowedGroups();
for(GroupEnt g : currentGroups){
allGroups.remove(g);
}
pickGroupsModel = new DualListModel<GroupEnt>(allGroups, currentGroups);
}
return pickGroupsModel;
}
public String listWellsites(){
getWellsiteList();
return "listWellsites";
}
public String showAddWellsite(){
FacesContext context = FacesContext.getCurrentInstance();
setWellsite(new WellsiteEnt());
wellsite.setAllowedGroups(new ArrayList<GroupEnt>());
pickGroupsModel = null;
context.addMessage(null, new FacesMessage(FacesMessage.SEVERITY_INFO,
"Fields annotated with a ' * ' are mandatory",""));
return "addWellsite";
}
public String addWellsite(){
FacesContext context = FacesContext.getCurrentInstance();
wellsite.setDate(new Date());
wellsite.setLastUpdate(wellsite.getDate());
try {
wellsiteDao.addWell(wellsite);
for(GroupEnt g : pickGroupsModel.getTarget()){
GroupEnt group = groupDao.getOne(g.getGroupId());
group.getGroupWellsites().add(wellsite);
groupDao.update(group);
}
return listWellsites();
} catch (Exception ex) {
Logger.getLogger(WellsiteController.class.getName()).log(Level.SEVERE, null, ex);
context.addMessage(null, new FacesMessage(FacesMessage.SEVERITY_ERROR,
ex.getMessage(),""));
return null;
}
}
}
@ManagedBean(name=“wellsiteController”)
@请求范围
公共类WellsiteController实现可序列化{
私有静态最终长serialVersionUID=1L;
@ManagedProperty(“wellsiteDao”)
私人井场道井场道;
@ManagedProperty(“#{userDao}”)
私有UserDao UserDao;
@ManagedProperty(“#{groupDao}”)
私有的GroupDao-GroupDao;
@ManagedProperty(“#{userController.loggedUser}”)
私人用户日志;
私人井场;
私人名单和网站名单;
DualListModel pickGroupsModel;
公共井站控制员(){
}
@施工后
公共void build(){
井场=新井场();
wellsite.SetAlloweGroups(新ArrayList());
}
/*一些能手和二传手*/
公共WellsiteDataTableModel getWellsiteDataTableModel(){
返回新的WellsiteDataTableModel(getWellsiteList());
}
public void setPickGroupsModel(DualListModel模型){
pickGroupsModel=模型;
}
公共DualListModel getPickGroupsModel(){
if(pickGroupsModel==null){
List allGroups=groupDao.getAll();
List currentGroups=wellsite.getAlloweGroups();
对于(GroupEnt g:currentGroups){
所有组。移除(g);
}
pickGroupsModel=新的DualListModel(所有组、当前组);
}
返回pickGroupsModel;
}
公共字符串listWellsites(){
getWellsiteList();
返回“listWellsites”;
}
公共字符串showAddWellsite(){
FacesContext context=FacesContext.getCurrentInstance();
setWellsite(新的WellsiteEnt());
wellsite.SetAlloweGroups(新ArrayList());
pickGroupsModel=null;
context.addMessage(空,新FacesMessage(FacesMessage.SEVERITY_INFO,
“带“*”注释的字段为必填项”、“”);
返回“addWellsite”;
}
公共字符串addWellsite(){
FacesContext context=FacesContext.getCurrentInstance();
井场。设置日期(新日期());
wellsite.setLastUpdate(wellsite.getDate());
试一试{
wellsiteDao.addWell(井场);
for(GroupEnt g:pickGroupsModel.getTarget()){
GroupEnt group=groupDao.getOne(g.getGroupId());
group.getGroupWellsites().add(wellsite);
更新(组);
}
返回listWellsites();
}捕获(例外情况除外){
Logger.getLogger(WellsiteController.class.getName()).log(Level.SEVERE,null,ex);
context.addMessage(空,新FacesMessage(FacesMessage.SEVERITY_错误,
例如getMessage(),“”);
返回null;
}
}
}
此视图将正确渲染。datatable和按钮看起来不错。问题是,当我第一次单击“addWellsite”命令按钮时,什么也没发生。这一页似乎正在刷新。如果我再次单击它,发生异常时:
java.lang.NumberFormatException:对于输入字符串:“null”
使用调试器,我发现“addWellsite”的操作不是第一次调用的,因此不会生成结果(因此,页面刷新)
异常可能是由于当前视图或目标视图中缺少初始化(因为这两个视图都是通过页面刷新中未调用的操作方法显示的)
问题是:为什么不第一次调用action方法?
自:
每当ui命令
组件调用相关操作失败时,请验证以下内容:
UICommand
组件必须放置在UIForm
组件中(例如h:form
)UIForm
组件嵌套在一起(注意包含文件!)h:messages
获取所有消息)UICommand
组件放置在UIData
组件中,请确保完全相同的DataModel
(UIData的值
属性后面的对象)被保留呈现属性和禁用属性不应计算为false
呈现
或取消
属性
PhaseListener
或任何EventListener
更改JSF生命周期以跳过调用操作阶段过滤器
或Servlet
以某种方式阻止了FacesServlet
的请求为什么不第一次调用action方法?当此
的父对象被呈现在
<h:commandButton ...>
<f:ajax ... render=":listForm" />
</h:commandButton>
<p:commandButton ... update=":listForm" />