Question

我最近使用的是glassfish 4。我有一个带有primefaces数据表组件的jsf页面。但是当我提交表单时，它总是显示“目标无法访问的标识符已解析为null。我将范围从请求更改为已查看，然后更改为会话范围，但它们都不起作用。我已经阅读了类似的问题而没有任何进展。这是jsf页面：

<ui:define name="content">
 <h:form id="orderform">
   <h:panelGroup id="orderinfor">
   <p:panelGrid columns="6">
   <f:facet name="header">  
      new order  
     </f:facet> 
    <h:outputLabel for="orderday" value="order day:" />  
 <p:calendar value="#{orderInfo.orderInfo_Day}"      id="orderday" pattern="yyyy-mm-dd"/>
<h:outputLabel for="ordername" value="order name *" /> 
<p:inputText id="ordername" value="# {orderInfo.orderInfo_name}"/>
<h:outputLabel for="ordernnum" value="order number：" /> 
<p:inputText id="ordernnum" value="#{orderInfo.orderInfo_workId}"/>    

<h:outputLabel for="ordermemo" value="memo：" /> 
<p:inputText id="ordermemo" value="#{orderInfo.orderInfo_Memo}"/>            

</p:panelGrid>

 <h:panelGroup id="orderpathpanel">
 <p:dataTable id="multiDepts" var="depwork" value="#{dbOrderManager.workpaths}" paginator="false"   
                                 selection="#{orderInfo.selectedDepartments}" rowKey="#{depwork.manualwork_dept.dept_Id}">  

 <f:facet name="header">  
 path  
 </f:facet>  

 <p:column selectionMode="multiple" style="width:2%" />  

  <p:column headerText="department name" style="width:10%">  
                                 #{depwork.manualwork_dept.dept_name}  
</p:column>  
<p:column headerText="order number" style="width:2%">  
 <p:spinner size="2" min="1" value="#{depwork.manualwork_workOrder}" />
</p:column> 

 <p:column headerText="memo" style="width: 100%;">  
 <p:inputText style="width: 100%;" value="#{depwork.manualwork_Memo}"/> 
 </p:column> 
 </p:dataTable>  
<h:commandButton id="multiViewButton" action="#{dbOrderManager.saveOrder(orderInfo)}" value="add order">


       </h:commandButton>
      </h:panelGroup>
    </h:form>
  </ui:define>

这是Managed Bean

@Named(value = "orderInfo")
@ViewScoped
public class OrderInfo implements Serializable {

private OrderPath[] selectedDepartments;
private Date orderInfo_Day;

// get and set methods...

}

OrderPath是一个普通的对象类

public class OrderPath  implements Serializable {
//..
}

错误信息是：

/testorder.xhtml @49,127 selection="#{orderInfo.selectedDepartments}": Target Unreachable, identifier 'orderInfo' resolved to null

我尝试使用p：commandButton和h：commandButton，但得到了同样的错误。

视图作用域托管bean为空

0 个答案: