两个portlet之间跳转并传值

在不同的Portlet之间传参数，这想这是所有用Liferay的人都想实现的，但在以前的版本中确实做不到。现在的版本可以了，并且很简单

 

首先，打开portlet.xml文件，找到你想实现传值和接收值的portlet片段，在每个片段中加上下面这行代码：

参数名

然后，在最后面定义这个参数，写法是这样的：

  参数名
  x:参数名
 

整体是这样

xml version="1.0" ?>

< portlet-app
     version ="2.0"
    xmlns ="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd"
    xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation ="http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd"
>
    
         < portlet >
         < portlet-name > chartcontroler portlet-name >
         < display-name > ChartControler display-name >
         < portlet-class >
            com.noah.action.ChartControlerPortlet
         portlet-class >
         < init-param >
             < name > view-jsp name >
             < value > /html/chartcontroler/view.jsp value >
         init-param >
         < expiration-cache > 0 expiration-cache >
         < supports >
             < mime-type > text/html mime-type >
             < portlet-mode > VIEW portlet-mode >
         supports >
         < resource-bundle > content/Language resource-bundle >
         < portlet-info >
             < title > ChartControler title >
             < short-title > ChartControlerPortlet short-title >
             < keywords > keywords >
         portlet-info >
         < portlet-preferences >
             < preference >
                 < name > years name >
                 < value > 2010,2011,2012 value >
             preference >
         portlet-preferences >
         < security-role-ref >
             < role-name > administrator role-name >
         security-role-ref >
         < security-role-ref >
             < role-name > guest role-name >
         security-role-ref >
         < security-role-ref >
             < role-name > power-user role-name >
         security-role-ref >
         < security-role-ref >
             < role-name > user role-name >
         security-role-ref >
         < supported-public-render-parameter > currentYear supported-public-render-parameter >
         < supported-public-render-parameter > report supported-public-render-parameter >
         < supported-public-render-parameter > partner supported-public-render-parameter >
         < supported-public-render-parameter > portfolio supported-public-render-parameter >
     portlet >
     < portlet >
         < portlet-name > chart portlet-name >
         < display-name > Chart display-name >
         < portlet-class > com.noah.action.ChartPortlet portlet-class >
         < init-param >
             < name > view-jsp name >
             < value > /html/chartportlet/view.jsp value >
         init-param >
         < expiration-cache > 0 expiration-cache >
         < supports >
             < mime-type > text/html mime-type >
             < portlet-mode > VIEW portlet-mode >
         supports >
         < resource-bundle > content/Language resource-bundle >
         < portlet-info >
             < title > Chart title >
             < short-title > ChartPortlet short-title >
             < keywords > keywords >
         portlet-info >
         < security-role-ref >
             < role-name > administrator role-name >
         security-role-ref >
         < security-role-ref >
             < role-name > guest role-name >
         security-role-ref >
         < security-role-ref >
             < role-name > power-user role-name >
         security-role-ref >
         < security-role-ref >
             < role-name > user role-name >
         security-role-ref >
         < supported-public-render-parameter > currentYear supported-public-render-parameter >
         < supported-public-render-parameter > report supported-public-render-parameter >
         < supported-public-render-parameter > partner supported-public-render-parameter >
         < supported-public-render-parameter > portfolio supported-public-render-parameter >
     portlet >
    
     < public-render-parameter >
         < identifier > currentYear identifier >
         < qname  xmlns:x ="http://www.liferay.com/public-render-parameters" > x:currentYear qname >
     public-render-parameter >
     < public-render-parameter >
         < identifier > report identifier >
         < qname  xmlns:x ="http://www.liferay.com/public-render-parameters" > x:report qname >
     public-render-parameter >
     < public-render-parameter >
         < identifier > partner identifier >
         < qname  xmlns:x ="http://www.liferay.com/public-render-parameters" > x:partner qname >
     public-render-parameter >
     < public-render-parameter >
         < identifier > portfolio identifier >
         < qname  xmlns:x ="http://www.liferay.com/public-render-parameters" > x:portfolio qname >
     public-render-parameter >
portlet-app >

对参数进行赋值的话，就是在Action中用下面这句话：

actionResponse.setRenderParameter("参数名", 参数值);

获取的话，就直接像取其它参数一下直接获取：

在Action中，String 变量 = ParamUtil.getString(request, "参数名", "默认值");

在JSP中， <%=renderRequest.getParameter("参数名")%>

 

整体代码如下：

public class ChartControlerPortlet extends MVCPortlet {

    @Override
    public void processAction(ActionRequest actionRequest,
            ActionResponse actionResponse) throws IOException, PortletException {
        String currentYear = ParamUtil.getString(actionRequest, "currentYear", "2010");
        String report = ParamUtil.getString(actionRequest, "report", "");
        String partner = ParamUtil.getString(actionRequest, "partner", "Bocholter Energie- und Wasserversorgung GmbH");
        String portfolio = ParamUtil.getString(actionRequest, "portfolio", "");
        
        actionResponse.setRenderParameter("currentYear", currentYear);
        actionResponse.setRenderParameter("report", report);
        actionResponse.setRenderParameter("partner", partner);
        actionResponse.setRenderParameter("portfolio", portfolio);
        //actionResponse.setRenderParameter("jspPage", "/html/chartportlet/view.jsp");
        super.processAction(actionRequest, actionResponse);
    }

    @Override
    public void render(RenderRequest request, RenderResponse response)
            throws PortletException, IOException {
        String currentYear = ParamUtil.getString(request, "currentYear", "2010");
        String report = ParamUtil.getString(request, "report", "");
        String partner = ParamUtil.getString(request, "partner", "");
        String portfolio = ParamUtil.getString(request, "portfolio", "");

        PortletPreferences prefs = request.getPreferences();
        String years = prefs.getValue("years", "2010,2011,2012");
        //String portfolios = prefs.getValue("portfolios", "Absatzportfolio: A-a,Absatzportfolio: B-b,Absatzportfolio: C-c");
        //String partners = prefs.getValue("partners", "");

        //顺便说一下，这一行，可以实现通过Session传值，有兴趣的可以研究一下
        request.getPortletSession().setAttribute(DataPoolUtil.SESSION_SHARED_YEAR, currentYear, PortletSession.APPLICATION_SCOPE);

        request.setAttribute("years", years);
        request.setAttribute("portfolios", portfolio);
        request.setAttribute("currentYear", currentYear);
        request.setAttribute("report", report);
        request.setAttribute("partner", partner);
        super.render(request, response);
    }
 

}