Primefaces 4.0 dataTable 对话框详细信息不起作用

Question

我正在使用 PrimeFaces 4.0 和 Netbeans 6.9.1。我在这里关注了 primefaces 演示：

DataTable Single Selection

一切正常，期待按钮视图。这是我的代码：

Customer_list.xhtml

<p:growl id="msgs" showDetail="true" />
<h:form id="formTable">
    <p:dataTable styleClass="table" id="customers" var="customer" value="#{customerBean.customer}">

        <p:column>
            <f:facet name="header">First Name</f:facet>
            #{customer.firstName}
        </p:column>

        <p:column>
            <f:facet name="header">Last Name</f:facet>
            #{customer.lastName}
        </p:column>

        <p:column>
            <f:facet name="header">Email</f:facet>
            #{customer.email}
        </p:column>

        <p:column>
            <f:facet name="header">DOB</f:facet>
            #{customer.dob}
        </p:column>
        <p:column style="width:4%">
            <p:commandButton id="selectButton" update=":formCreate" oncomplete="dialogCustomerCreate.show()" icon="ui-icon-search" title="Update">
                <f:setPropertyActionListener value="#{customer}" target="#{customerBean.selectedCustomer}" />
            </p:commandButton>
        </p:column>
    </p:dataTable>
</h:form>
<h:form id="formCreate">
    <p:dialog header="Create New Customer" widgetVar="dialogCustomerCreate" resizable="false" id="dlgCustomerCreate"
              showEffect="fade" hideEffect="explode" modal="true">

        <h:panelGrid id="display" columns="2" cellpadding="4" style="margin:0 auto;">

            <h:outputText value="First Name:" />
            <h:outputText value="#{customerBean.selectedCustomer.firstName}" style="font-weight:bold"/>

            <h:outputText value="Last Name:" />
            <h:outputText value="#{customerBean.selectedCustomer.lastName}" style="font-weight:bold"/>


            <h:outputText value="Email:" />
            <h:outputText value="#{customerBean.selectedCustomer.email}" style="font-weight:bold"/>

            <h:outputText value="DOB:" />
            <h:outputText value="#{customerBean.selectedCustomer.dob}" style="font-weight:bold"/>

        </h:panelGrid>

    </p:dialog>

</h:form>

customerBean.java

public class customerBean {

    private List<Customer> customer;
    private Customer selectedCustomer;

    /** Creates a new instance of customerBean */
    public customerBean() {
        customer = new ArrayList<Customer>();        
    }

    public List<Customer> getCustomer() {
        CustomersDao cust_dao = new CustomersDao();
        customer = cust_dao.findAll();
        return customer;
    }

    public Customer getSelectedCustomer() {
        return selectedCustomer;
    }

    public void setSelectedCustomer(Customer selectedCustomer) {
        this.selectedCustomer = selectedCustomer;
    }
}

CustomersDao.java

public class CustomersDao {
    public List<Customer> findAll(){
        List<Customer> list_cust = null;
        Session session = HibernateUtil.getSessionFactory().getCurrentSession();
        String sql = "FROM Customer";
        try{
            session.beginTransaction();
            list_cust = session.createQuery(sql).list();
            session.beginTransaction().commit();
        }catch(Exception e){
            session.beginTransaction().rollback();
        }
        return list_cust;
    }
}

希望有人建议我的代码有什么问题。我需要 2 天才能解决它。感谢阅读！

Answer 1

您需要为您的 Customer 类提供转换器：

@FacesConverter(forClass = Customer.class)
public class CustomerConverter implements Converter {

    @Override
    public Object getAsObject(FacesContext context, UIComponent component, String value) {
        if (value != null && !value.equals("") && !value.equals("0")) {
            //find and return object from DAO
        } else {
            return null;
        }
    }

    @Override
    public String getAsString(FacesContext context, UIComponent component, Object value) {
        //return object id as string
   }
}

Answer 2

1) 尝试删除您的 <h:form/>，因为您没有在该对话框中提交任何信息；

2) 尝试将您的<p:commandButton update=""/> 更改为update=":display"；

3) 将process="@form" 添加到您的<p:commandButton/>；

4) 如果可行，我认为您不需要 <h:form/>。

Answer 3

您没有提到在commandButton 属性update 处显示弹出对话框的正确ID。

<p:commandButton id="selectButton" update=":formCreate:display" oncomplete="dialogCustomerCreate.show()" icon="ui-icon-search" title="Update">
     <f:setPropertyActionListener value="#{customer}" target="#{customerBean.selectedCustomer}" />
</p:commandButton>