【liferay】5、使用PortletURL进行跨portlet通信 liferay6.2

【问题】

1、当我们一个页面存在多一个portlet的时候，如在不同的portlet之间传参？

【解决办法】

1、在liferay官方有几种方式，比较复杂麻烦，不是太实用，这里不再赘述。

2、通过friendlyurl后缀中用?param1=111的方式可以传参，但是如果我们把友好url修改了，也需要修改代码，不是很方便

3、那么还有一种方式，我们可以使用PortletURL来进行传参数

案例展示：

目前右边没有显示任何值

这里使用了是一个弹出框，其实关键就是其中的url，如果是从定向那么就会直接显示到当前页面中， 这是两个不同的portlet

【实例操作】

首先我们需要2个portlet，新建2个portlet，iframe-demo和url-params

首先我们初始化ifream的页面

<%@page import="com.liferay.portal.kernel.portlet.LiferayWindowState" %>
<%@ page language="java" contentType="text/html; charset=UTF-8"%>
<%@ taglib uri="http://java.sun.com/portlet_2_0" prefix="portlet" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://liferay.com/tld/portlet" prefix="liferay-portlet" %>
<%@ taglib uri="http://liferay.com/tld/ui" prefix="liferay-ui" %> 

<portlet:defineObjects />
<!-- 这个是用来定义一个参数 -->
<c:set var="basepath" value="${pageContext.request.contextPath }" />
<script type="text/javascript" src="${basepath }/js/jQuery/jquery-1.12.3.min.js"> </script>

<!-- action是页面渲染之前跳转 -->
<portlet:actionURL var="iframeDemo" name="iframeDemo" windowState="<%=LiferayWindowState.POP_UP.toString() %>">
    <portlet:param name="jspPage" value="/html/iframedemo/portletIframeDemo.jsp"/>
</portlet:actionURL>

<!-- 这个是已经确定页面了，之后的跳转 -->
<portlet:renderURL var="render1" />

<!-- 跨portlet消息 plid为目标portlet所在的页面的id -->
<liferay-portlet:renderURL var="portletViewUrl" plid="${viewPild }" portletName="coudconfigportle_WAR_demoportlet" windowState="pop_up">
    <liferay-portlet:param name="mvcPath" value="/html/coudconfigportle/view.jsp"/>
    <liferay-portlet:param name="portletValue1" value="${portletValue1 }"/>
</liferay-portlet:renderURL>

<style>

    .iframeDemoBox {
        background:#dcdcdc;
        height:100px;
          width:500px;
    }

    .leftDiv {
        float:left;
        width:200px;
    }

    .right_box {
        float:right;
        height:100px;
          width:250px;
    }

</style>

<div class="iframeDemoBox">
    <div class="leftDiv">
        <ul>
            <li><a href="javascript:iframeportlet()">portlet导航</a></li>
            <li><a href="javascript:iframejsp()">jsp导航</a></li>
            <li><a href="javascript:ajaxnav()">ajax导航</a></li>
        </ul>
    </div>
    <div class="right_box">
        <iframe id="demo_iframe" height="100px" width="250px" ></iframe>
    </div>
</div>
<br>
<div>
    <ul>
        <li>portlet之间传值demo:<input id="betweenPortletPlid" type="button" class="btn-info" value="${demo }" /></li>
        <li>portlet之间传值plid:<input id="betweenPortletPlid" type="button" class="btn-info" value="${viewPild }" /></li>
        <li>portlet之间传值:<input id="betweenPortletValue" type="text" class="btn" /></li>
    </ul>

</div>
<br/>

<input type="text" class="btn-info" value="${render1 }" size="100px"/>

<br>
plid:${viewPild } <br/>
url:${portletViewUrl} <br/>
portletName=${portletName } <br/>
portletValue1=${portletValue1 }<br/>

<br/>
urljava:${viewUrl} <br/>
<liferay-ui:icon image="view" url="${viewUrl}" useDialog="true" /><br/>
第二个使用标签进行设置url:<liferay-ui:icon image="view" url="${portletViewUrl}" useDialog="true" /><br/>

<script>

    function iframeportlet(){
        $('#demo_iframe').attr('src','${iframeDemo}');
    }
    function iframejsp(){
        var url = '${basepath}/html/iframedemo/jspdemo.jsp';
        $('#demo_iframe').attr('src',url);
    }

    function ajaxnav(){
        //演示环境，一个页面，所以先将IFrame元素移除
        $('#right_box iframe').remove();
        var url = '${basepath}/html/iframedemo/ajax.jsp';
        $.get(url,function(data){
            $('#right_box').html(data);
        })
    }

    function ajax1() {
        window.location = "${render1}?betweenPortletValue=" + $("#betweenPortletValue").val();
    }

    function openNew() {
        //获取页面body！内容！的高度和宽度
        var sHeight = document.documentElement.scrollHeight;
        var sWidth = document.documentElement.scrollWidth;
        //获取可视区域高度，宽度与页面内容的宽度一样
        var wHeight = document.documentElement.clientHeight;
        //创建遮罩层div并插入body
        var oMask = document.createElement("div");
        oMask.id = "mask";
        oMask.style.height = sHeight + "px";
        //宽度直接用100%在样式里
        document.body.appendChild(oMask);
        //创建登录层div并插入body
        var oLogin = document.createElement("div");
        oLogin.id = "login";
        oLogin.innerHTML = "<div class='loginCon'><div id='close'></div></div>"
        document.body.appendChild(oLogin);
        //获取login的宽度和高度并设置偏移值
        var dHeight = oLogin.offsetHeight;
        var dWidth = oLogin.offsetWidth;
        oLogin.style.left = (sWidth - dWidth) / 2 + "px";
        oLogin.style.top = (wHeight - dHeight) / 2 + "px";
        //获取关闭按钮
        var oClose = document.getElementById("close");
        oMask.onclick = oClose.onclick = function() {
            document.body.removeChild(oMask);
            document.body.removeChild(oLogin);
        }
    }
</script>

ifream后台代码

package com.xiaof.Iframe;

import java.io.IOException;

import javax.portlet.ActionRequest;
import javax.portlet.ActionResponse;
import javax.portlet.PortletException;
import javax.portlet.PortletRequest;
import javax.portlet.PortletURL;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;

import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;
import com.liferay.portal.kernel.util.WebKeys;
import com.liferay.portal.theme.ThemeDisplay;
import com.liferay.portlet.PortletURLFactoryUtil;
import com.liferay.util.bridges.mvc.MVCPortlet;

/**
 * Liferay中左右布局的示例
 * iframe
 */
public class IframeDemo extends MVCPortlet {

    private final static String WAR = "_WAR_";
    private static Log log = LogFactoryUtil.getLog(IframeDemo.class);

    @Override
    public void doView(RenderRequest renderRequest,
            RenderResponse renderResponse) throws IOException, PortletException {
        // TODO Auto-generated method stub
        //获取对应的portlet的plid
        log.debug("测试");
        ThemeDisplay themeDisplay = (ThemeDisplay)renderRequest.getAttribute(WebKeys.THEME_DISPLAY);
        long viewPild = themeDisplay.getPlid();
//        viewPild = PortalUtil.getPlidFromFriendlyURL(themeDisplay.getCompanyId(), "/web/xiaof/configportlet");
//        renderRequest.setAttribute("viewPild", viewPild);
        //portletName为目标Portlet的名称，这个名称的规则是固定的，以_WAR_分割，
        //前面是portlet.xml里面的portletname，后面为当前portlet所在的工程名称，如果news-portlet，
        //这里就是newsportlet，如果是CMS-portlet，这里就是CMSportlet。
        //coudconfigportle_WAR_demoportlet   urlparams_WAR_demoportlet
        String portletName = "urlparams_WAR_demoportlet";
//        renderRequest.setAttribute("portletName", portletName);
//        renderRequest.setAttribute("portletValue1", "portletValue1");

        PortletURL viewUrl = PortletURLFactoryUtil.create(renderRequest, portletName, viewPild, PortletRequest.RENDER_PHASE);
        viewUrl.setParameter("portletValue1", "mytest11");

        System.out.println("请求的url:" + viewUrl.toString());

        renderRequest.setAttribute("viewUrl", viewUrl.toString());

        super.doView(renderRequest, renderResponse);
    }

    public void iframeDemo(ActionRequest actionRequest,ActionResponse actionResponse) {
        actionRequest.setAttribute("demo", "这是portlet的iframe");
//        UrlConfigLocalServiceUtil.
    }

}

注意，这个代码中的

plid是页面id，在layout表

接下来我们看看获取参数的portlet

UrlParamsPortlet

package com.xiaof.urlparam;

import java.io.IOException;
import java.util.Enumeration;

import javax.portlet.PortletException;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;
import javax.servlet.http.HttpServletRequest;

import com.liferay.portal.util.PortalUtil;
import com.liferay.util.bridges.mvc.MVCPortlet;

/**
 * Portlet implementation class UrlParamsPortlet
 */
public class UrlParamsPortlet extends MVCPortlet {

    @Override
    public void doView(RenderRequest renderRequest,
            RenderResponse renderResponse) throws IOException, PortletException {

        //获取url参数 portletValue1  _coudconfigportle_WAR_demoportlet_portletValue1
        String param1 = renderRequest.getParameter("portletValue1");
        renderRequest.setAttribute("param1", param1);

//        Enumeration<String> enumerations =  renderRequest.getAttributeNames();
//        while(enumerations.hasMoreElements()) {
//            String temp = enumerations.nextElement();
//            System.out.println("Enumeration[" + temp + ":" + renderRequest.getAttribute(temp));
//        }

        HttpServletRequest requestPortlet = PortalUtil.getHttpServletRequest(renderRequest);
        String param2 = (String) requestPortlet.getParameter("portletValue1");
        requestPortlet.setAttribute("param2", param2);

        //原生http
        HttpServletRequest request = PortalUtil.getOriginalServletRequest(requestPortlet);
        String param3 = (String) request.getParameter("portletValue1");
        request.setAttribute("param3", param3);
        System.out.println("UrlParamsPortlet:\nparam1:" + param1 + "\nparam2:" + param2 + "\nparam3:" + param3);

        super.doView(renderRequest, renderResponse);
    }

}

页面

<%@ taglib uri="http://java.sun.com/portlet_2_0" prefix="portlet" %>
<%@ page language="java" contentType="text/html; charset=UTF-8"%>

<portlet:defineObjects />

<h1>测试url传参数的portlet</h1>
参数:<br/>
<b>param1</b>:${param1 }<br/>
<b>param2</b>:${param2 }<br/>
<b>param3</b>:${param3 }<br/>

最后：代码sdk项目已经上传到码云，有兴趣的同学可以下载下来看看：https://gitee.com/cutterPpoint/liferay