如何使用 primefaces 在我的 java ee 应用程序中仅更新网页的一部分?下面是我的xhtml代码:
<h:form id="frm">
<h:outputText value="#{equityBean.tdate}" id="mydt" style="position: absolute;right: 100px;top:210px"/>
<p:panelGrid columns="3" style="position: absolute;top:210px">
<p:selectOneMenu style="width: 150px" value="#{equityBean.exchange}">
<f:selectItem itemLabel="NSE" itemValue="nse"/>
<f:selectItem itemLabel="BSE" itemValue="bse"/>
<p:ajax update="sym" listener="#{equityBean.wow}"/>
</p:selectOneMenu>
<p:selectOneMenu style="width: 150px" id="sym" value="#{equityBean.scripSymbol}">
<f:selectItem itemLabel="select scrip" />
<f:selectItems var="scrip" value="#{equityBean.sl}" itemLabel="#{scrip.scripSymbol}" itemValue="#{scrip.scripSymbol}"/>
</p:selectOneMenu>
<p:commandButton value="Get Quote" type="submit" action="#{equityBean.setQuote()}" oncomplete="dlg.show()" update=":frmdialog" />
</p:panelGrid>
<br/>
<div style="width: 100%" id="updateDiv">
<table style="width: 100%">
<tr>
<td>
<b>Nifty 50</b><br/>
<b><h:outputText value="#{equityBean.niftyChange}"/></b><br/>
<b><h:outputText value="#{equityBean.niftyChangePer}"/></b><br/>
<b><h:outputText value="#{equityBean.niftyLTP}"/></b></td>
<td><img src="http://ichart.yahoo.com/t?s=^NSEI"/></td>
<td> </td><td> </td>
<td>
<b>BSE Sensex</b><br/>
<b><h:outputText value="#{equityBean.sensexChange}"/></b><br/>
<b><h:outputText value="#{equityBean.sensexChangePer}"/></b><br/>
<b><h:outputText value="#{equityBean.sensexLTP}"/></b></td>
<td><img src="http://ichart.yahoo.com/t?s=^BSESN"/></td>
<td> </td><td> </td>
<td>
<b>Gold</b><br/>
<b><h:outputText value="#{equityBean.sensexChange}"/></b><br/>
<b><h:outputText value="#{equityBean.sensexChangePer}"/></b><br/>
<b><h:outputText value="#{equityBean.sensexLTP}"/></b></td>
<td><img src="http://ichart.yahoo.com/t?s=GCQ12.CMX"/></td>
</tr>
</table>
<hr/>
</div>
我希望每 5 秒更新一次表格,我该怎么做?