DWR 简化 Ajax 的 portlet 间通信（3）
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- UID
- 1066743
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DWR 简化 Ajax 的 portlet 间通信（3）
- 创建并打开 OrdersView.jsp（在 interportletmessagingusingajax/jsp/html 目录），并把清单 7 中的代码添加到它：
清单 7. OrdersView.jsp1
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| <%@ page contentType="text/html"
import="java.util.*,javax.portlet.*,interportletmessagingusingajax.*" %>
<%@taglib uri="http://java.sun.com/portlet" prefix="portlet" %>
<portlet:defineObjects/>
<jsp:include page="javascriptFunctions.jsp" />
<DIV style="margin: 6px">
<H4 style="margin-bottom: 3px">Orders</H4>
<table cellspacing="0" cellpadding="5" border="1">
<% db.MockupDB database= db.MockupDB.getInstance();
String[] orders=database.getOrders();
for(int i=0;i<orders.length;i++)
{
%>
<tr>
<td><%="000000000"+String.valueOf(i+1) %></td>
<td><a href="" onclick="return <portlet:namespace />sendOrderNr('<%=
orders%>');"><%=orders%></a></td>
</tr>
<%
}
%>
</table>
</DIV>
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- 第二个 portlet 是 OrderDetailsPortlet.java。对这个 portlet 使用 中的代码，并把 VIEW_JSP变量的值改成 OrdersDetailsPortletView.jsp。这个 JSP 的代码如清单 8 所示： 清单 8. OrdersDetailsPortletView.jsp
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| <%@ page contentType="text/html"
import="java.util.*,javax.portlet.*,interportletmessagingusingajax.*" %>
<%@taglib uri="http://java.sun.com/portlet" prefix="portlet" %>
<portlet:defineObjects/>
<DIV style="margin: 6px">
<H4 style="margin-bottom: 3px">Order details</H4>
<table cellspacing="0" cellpadding="5" border="1">
<tr>
<th>Order number</th>
<th>Order details</th>
</tr>
<tr>
<%
String orderDetailsOrderNumber=(String)renderRequest.getPortletSession().getAttribute(
"orderDetailsOrderNumber",PortletSession.APPLICATION_SCOPE);
String orderDetails=(String)renderRequest.getPortletSession().getAttribute(
"orderDetails",PortletSession.APPLICATION_SCOPE);
if(orderDetailsOrderNumber==null)
{
orderDetailsOrderNumber="";
}
if(orderDetails==null)
{
orderDetails="";
}
%>
<td><div id="orderDetailsOrderNumber"><%=orderDetailsOrderNumber%>
</div></td>
<td><div id="orderDetails"><%=orderDetails%></div></td>
</tr>
</table>
</DIV>
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- 第三个 portlet 是 CustomerDetailsPortlet.java。对这个 portlet 使用 中的代码，并把 VIEW_JSP变量的值改成 CustomerDetailsPortletView.jsp。这个 JSP 的代码如清单 9 所示： 清单 9. CustomerDetailsPortletView.jsp
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| <%@ page contentType="text/html"
import="java.util.*,javax.portlet.*,interportletmessagingusingajax.*" %>
<%@taglib uri="http://java.sun.com/portlet" prefix="portlet" %>
<portlet:defineObjects/>
<%
%>
<DIV style="margin: 6px">
<H4 style="margin-bottom: 3px">Customer details</H4>
<table cellspacing="0" cellpadding="5" border="1">
<tr>
<th>Order number</th>
<th>Customer details</th>
</tr>
<tr>
<%
String customerDetailsOrderNumber=
(String)renderRequest.getPortletSession().getAttribute(
"customerDetailsOrderNumber",PortletSession.APPLICATION_SCOPE);
String customerDetails=(String)renderRequest.getPortletSession().getAttribute(
"customerDetails", PortletSession.APPLICATION_SCOPE);
if(customerDetailsOrderNumber==null)
{
customerDetailsOrderNumber="";
}
if(customerDetails==null)
{
customerDetails="";
}
%>
<td><div id="customerDetailsOrderNumber"><%=customerDetailsOrderNumber%>
</div></td>
<td><div id="customerDetails"><%=customerDetails%></div></td>
</tr>
</table>
</DIV>
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示例应用程序现在准备好了。下一步是把 portlet 打包成 WAR 文件并在 Apache Jetspeed 门户中测试它。 |
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