两个portlet之间跳转并传值

来源：互联网发布：金属材料冲击实验数据编辑：程序博客网时间：2024/05/29 15:07

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：

<supported-public-render-parameter>参数名</supported-public-render-parameter>

然后，在最后面定义这个参数，写法是这样的：

<public-render-parameter>
<identifier>参数名</identifier>
<qname xmlns:x="http://www.liferay.com/public-render-parameters">x:参数名</qname>
</public-render-parameter>

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-name>chartcontroler</portlet-name>

<display-name>ChartControler</display-name>

<portlet-class>

com.noah.action.ChartControlerPortlet

</portlet-class>

<init-param>

<value>/html/chartcontroler/view.jsp</value>

</init-param>

<expiration-cache>0</expiration-cache>

<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>

</portlet-info>

<portlet-preferences>

<name>years</name>

</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-name>chart</portlet-name>

<display-name>Chart</display-name>

<portlet-class>com.noah.action.ChartPortlet</portlet-class>

<init-param>

<value>/html/chartportlet/view.jsp</value>

</init-param>

<expiration-cache>0</expiration-cache>

<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>

</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,
两个portlet之间跳转并传值

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)
两个portlet之间跳转并传值

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);

}

0 0