Jsf 后台管理Bean获得页面值的几种方式(一)

1 使用a4j:commandLink:

<a4j:commandLink id="clearBannerPictureLink"
    onclick="#{rich:component('clearPanel')}.show()"
    disabled="#{item.isDisplay}">
    <h:graphicImage value="/images/banners/btn_Clear.jpg"
        style="border:0" />
    <f:setPropertyActionListener value="#{item}"
        target="#{EsBBBannerBean.selectedItem}" />
    <f:setPropertyActionListener value="#{row}"
        target="#{EsBBBannerBean.jsfRow}" />
</a4j:commandLink>

<!-- the clear Panel -->
<rich:modalPanel id="clearPanel" autosized="true" width="200">
    <f:facet name="header">
        <h:outputText value="Are you sure to clear the uploaded picure ?"
            style="padding-right:15px;" />
    </f:facet>
    <h:form>
        <table width="100%">
            <tbody>
                <tr>
                    <td align="center" width="50%"><a4j:commandButton value="Yes"
                            action="#{EsBBBannerBean.clearUploadData}"
                            image="/images/banners/blue_Yes.jpg"
                            oncomplete="#{rich:component('clearPanel')}.hide();"
                            reRender="temp,bannerPath,table,info" /></td>
                    <td align="center" width="50%"><a4j:commandButton
                            value="Cancel" image="/images/banners/blue_Cancel.jpg"
                            onclick="#{rich:component('clearPanel')}.hide();return false;" />
                    </td>
                </tr>
            </tbody>
        </table>
    </h:form>
</rich:modalPanel>

重点在于使用<f:setPropertyActionListener将当前值关联到后台管理Bean的某个属性上-->弹出新面板之后(已经将值绑定到指定属性)-->action调用后台method处理