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我正在创建一个用于向用户添加电话的页面。

xhtml页面：

<h:form id="form1">
        <p:growl id="messages" showDetail="true"/>
        <p:panel header="Phone" style="width: 400px;"> 
            <p:panelGrid columns="2">
                <h:outputLabel for="number" value="Number: " />
                <p:inputText id="number"  value="#{addUserBean.phone.number}"/>
                <h:outputLabel for="name" value="Country: " />
                <p:inputText id="name" value="#{addUserBean.phone.country.name}"/>
                <f:facet name="footer">
                    <h:commandButton value="Add Phone" action="#{addUserBean.Add}"/>
                </f:facet>
            </p:panelGrid>
            <p:spacer height="30px;"/>
            <p:dataTable value="#{AddUserBean.user.phones}" var="phonex"  editable="true">
                <f:facet name="header">  
                    Phone List  
                </f:facet>
                <p:ajax event="rowEdit" listener="#{AddUserBean.onEdit}" update=":form1:messages" />  
                <p:ajax event="rowEditCancel" listener="#{AddUserBean.onCancel}" update=":form1:messages" /> 
                <p:column>
                    <f:facet name="header">  
                        <h:outputText value="Number" />  
                    </f:facet>
                    <p:cellEditor>  
                        <f:facet name="output">  
                            <h:outputText value="#{phonex.number}" />  
                        </f:facet>  
                        <f:facet name="input">  
                            <p:inputText value="#{phonex.number}" style="width:100%"/>  
                        </f:facet>  
                    </p:cellEditor> 
                </p:column>

                <p:column>
                    <f:facet name="header">  
                        <h:outputText value="Country:" />  
                    </f:facet>
                    <p:cellEditor>  
                        <f:facet name="output">  
                            <h:outputText value="#{phonex.country.name}" />  
                        </f:facet>  
                        <f:facet name="input">  
                            <p:inputText value="#{phonex.country.name}" style="width:100%"/>  
                        </f:facet>  
                    </p:cellEditor>
                </p:column>

                <p:column headerText="Options" style="width:50px">  
                    <p:rowEditor />  
                </p:column> 
            </p:dataTable>
        </p:panel>
    </h:form>

后备豆：

@Named
@RequestScoped
public class AddUserBean {

    private Phone phone;

    private Country country;

    private User user;

    @Inject
    UserBeanLocal userBean;

    public AddUserBean(){

        phone= new Phone();
        phone.setCountry(new Country());
        user= new User();
        user.setPhones(new ArrayList<Phone>());
        country= new Country();

    }

    public Phone getPhone() {

        return phone;
    }

    public void setPhone(Phone phone) {
        this.phone = phone;
    }


    public Country getCountry() {
        return country;
    }

    public void setCountry(Country country) {
        this.country = country;
    }

    public void Add(){
        phone.getCountry().setName(country.getName());
        user.getPhones().add(phone);
    }

    public User getUser() {
        return user;
    }

    public void setUser(User user) {
        this.user = user;
    }

}

当我单击提交按钮时，它应该在其列表中为用户添加新手机并刷新数据表。我的问题是，当它提交时用户变量没有更新（它已更新但在刷新时它会清除变量），这可能是由于构造函数引起的，但如果我删除初始化，则会引发 Null 指针异常。

邮政

看到这个帖子，但没有工作。尝试将 bean 属性更改为SessionScoped(javax.enterprise.context.SessionScoped)但此异常引发org.jboss.weld.exceptions.DeploymentException: WELD-000072: Bean declaring a passivating scope must be passivation capable. Bean: Managed Bean [class com.totempool.admin.beans.AddUserBean] with qualifiers [@Default @Any @Named]

4

1 回答 1

1

if you must update an inputText, you must use in the component 

<p:inputText .. widgetVar="myInput" />

and after that, you write in you command button,

<p:commandButton ... process="@widgetVar(myInput)" />

if you want to apply the update to all your components in your panel, you use "widgetVar" attribute for the panel".

good luck

于 2015-02-25T15:12:13.340 回答