将属性设置为jsf Managed-Bean [英] Set properties to jsf managed-bean

问题描述

遵循第一个.jsf:

<ui:repeat var="prod" value="#{showProducts.decoys}">
     <h:form>
       {prod.price} 
       {prod.weight} 
       {prod.size} >
    <h:commandButton value="Buy" action="shoppingCart"/>
    </h:form>
</ui:repeat>

关注shoppingCart.jsf:

Have following shoppingCart.jsf:

<h:form>
 <h:dataTable value="#{prod}">
  <h:column>
   #{prod.name}<br/>
  </h:column>
  <h:column>
   #{prod.price}<br/>
  </h:column>
  <h:column>        
   <h:inputText value="#{prod.count}" size="3"/>
  </h:column>
</h:dataTable>  
<h:inputText value="#{order.phone}"/><br/>
<h:inputText value="#{order.mail}"><br/>
<h:inputText value="#{order.city}"/><br/>
<h:commandButton value="Order" action="#{showProducts.persistOrder}">
</h:form>

面孔配置:

    <managed-bean>
        <managed-bean-name>showProducts</managed-bean-name>
            <managed-bean-class>main.ShowProducts</managed-bean-class>
            <managed-bean-scope>session</managed-bean-scope>
...
            <managed-property>
               <property-name>product</property-name>
               <value>#{product}</value>
            </managed-property>
        </managed-bean>

    <managed-bean>
        <managed-bean-name>product</managed-bean-name>
        <managed-bean-class>main.Product</managed-bean-class>
        <managed-bean-scope>session</managed-bean-scope>
    </managed-bean>
...

问题:
定义为product
的托管Bean名称 迭代就是这种方式(shoppingCart.jsf):
h:dataTable value="#{prod}">
因此这意味着此迭代不会与名为product的bean连接

The problem:
managed bean name defined as product
iteration goes this way(shoppingCart.jsf):
h:dataTable value="#{prod}">
so it means that this iteration is not connected with bean named product anyhow

如何将属性prod.price,prod.weight,prod.count设置为真正的托管Bean属性:

How to set properties prod.price,prod.weight,prod.count to real managed bean properties:

product.price,product.weight,product.size

推荐答案

有两个问题:

1. 您没有在会话范围的bean中设置特定的prod.您应该这样做.

<h:commandButton value="Buy" action="shoppingCart">
    <f:setPropertyActionListener target="#{showProducts.product}" value="#{prod}" />
</h:commandButton>

顺便说一句，managed-property声明仅在父bean的创建期间将一个新的/空bean设置为属性.这不一定与ui:repeat中的相同 prod实例相同.您只需从faces-config.xml中删除#{product} bean.

By the way, the managed-property declaration only sets an new/empty bean as property during parent bean's ceration. This is not necessarily the same prod instance as you have in the ui:repeat. You can just remove the #{product} bean from your faces-config.xml.

h:dataTable在这里没有任何意义.您需要在这里h:panelGrid.

The h:dataTable doesn't make any sense here. You need h:panelGrid here.

<h:panelGrid columns="3">
    <h:outputText value="#{showProducts.product.name}" />
    <h:outputText value="#{showProducts.product.price}" />
    <h:outputText value="#{showProducts.product.count}" />
</h:panelGrid>

这篇关于将属性设置为jsf Managed-Bean的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！