JSR286portlet支持Ajax
一个平常的portlet先，jsr286类型。
/Train01/WebContent/WEB-INF/portlet.xml
<?xml version=”1.0″ encoding=”UTF-8″?><portlet-app xmlns=”http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd”version=”2.0″ xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance”xsi:schemaLocation=”http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd “><portlet><portlet-name>Train01</portlet-name><display-name xml:lang=”zh”>Train01</display-name><display-name>Train01</display-name><portlet-class>com.ibm.train01.Train01Portlet</portlet-class><init-param><name>wps.markup</name><value>html</value></init-param><expiration-cache>0</expiration-cache><supports><mime-type>text/html</mime-type><portlet-mode>view</portlet-mode></supports><supported-locale>zh</supported-locale><resource-bundle>com.ibm.train01.nl.Train01PortletResource</resource-bundle><portlet-info><title>Train01</title><short-title>Train01</short-title><keywords>Train01</keywords></portlet-info><portlet-preferences><preference><name>hehe</name><value>1</value></preference></portlet-preferences></portlet><default-namespace></default-namespace></portlet-app>
在Portlet java类中加入serveResource(ResourceRequest request, ResourceResponse response)方法
/Train01/src/com/ibm/train01/Train01Portlet.java
package com.ibm.train01;import java.io.*;import javax.portlet.*;/** * A sample portlet */public class Train01Portlet extends javax.portlet.GenericPortlet {/*** @see javax.portlet.Portlet#init()*/public void init() throws PortletException{super.init();}/*** Serve up the <code>view</code> mode.** @see javax.portlet.GenericPortlet#doView(javax.portlet.RenderRequest, javax.portlet.RenderResponse)*/public void doView(RenderRequest request, RenderResponse response) throws PortletException, IOException {// Set the MIME type for the render responseresponse.setContentType(request.getResponseContentType());PortletRequestDispatcher rd = getPortletContext().getRequestDispatcher(“/WEB-INF/pages/view.jsp”);rd.include(request,response);// or write to the response directly//response.getWriter().println(“Train01#doView()”);}/*** Serve up the <code>edit</code> mode.** @see javax.portlet.GenericPortlet#doEdit(javax.portlet.RenderRequest, javax.portlet.RenderResponse)*/public void doEdit(RenderRequest request, RenderResponse response) throws PortletException, IOException {// TODO: auto-generated method stub}/*** Serve up the <code>help</code> mode.** @see javax.portlet.GenericPortlet#doHelp(javax.portlet.RenderRequest, javax.portlet.RenderResponse)*/protected void doHelp(RenderRequest request, RenderResponse response) throws PortletException, IOException {// TODO: auto-generated method stub}/*** Process an action request.** @see javax.portlet.Portlet#processAction(javax.portlet.ActionRequest, javax.portlet.ActionResponse)*/public void processAction(ActionRequest request, ActionResponse response) throws PortletException, java.io.IOException {// TODO: auto-generated method stub}@Overridepublic void serveResource(ResourceRequest request, ResourceResponse response)throws PortletException, IOException {//用printWriter直接输出//response.setCharacterEncoding(“UTF-8”);//PrintWriter writer = response.getWriter();//writer.print(“今天是:”+new Date());String s = request.getPreferences().getValue(“hehe”, null);System.out.println(s+”———————————-“);//用dispatcher().include()转发到jsp页面getPortletConfig().getPortletContext().getRequestDispatcher(“/WEB-INF/pages/resource.jsp”).include(request, response);System.out.println(“=========================”);}}
view模式下的页面
/Train01/WebContent/WEB-INF/pages/view.jsp
<%@page language=”java”contentType=”text/html; charset=UTF-8″ pageEncoding=”utf-8″ session=”false”%><%–portlet标签的uri是要改成的，这样子的是不行的，不能使用下面的<portlet:resourceURL />这个标签的–%><%@taglib uri=”http://java.sun.com/portlet_2_0″ prefix=”portlet”%><%@tagliburi=”http://www.ibm.com/xmlns/prod/websphere/portal/v6.1/portlet-client-model”prefix=”portlet-client-model”%><portlet-client-model:init><portlet-client-model:require module=”ibm.portal.xml.*” /><portlet-client-model:require module=”ibm.portal.portlet.*” /></portlet-client-model:init><portlet:defineObjects /><%String s = renderRequest.getPreferences().getValue(“hehe”,null);%><%=s %><br /><a href=”<portlet:resourceURL />”>呵呵</a>
被resource的页面，可用来处理ajax请求，或者xxx。
/Train01/WebContent/WEB-INF/pages/resource.jsp
<%@page language=”java”contentType=”text/html; charset=UTF-8″ pageEncoding=”utf-8″ session=”false”%><%@taglib uri=”http://java.sun.com/portlet_2_0″ prefix=”portlet”%><%–听说这个<portlet-client-model:init>是不被支持的。所以下面的taglib没什么用。对比下view.jsp能看出来。–%><%@tagliburi=”http://www.ibm.com/xmlns/prod/websphere/portal/v6.1/portlet-client-model”prefix=”portlet-client-model”%><portlet:defineObjects /><% //可以通过resourceRequest取到Preferences里面的值的。String s = resourceRequest.getPreferences().getValue(“hehe”,null);//通过request取到请求过来的参数什么的。String queryMail = request.getParameter(“queryMail”);String queryName = request.getParameter(“queryName”);%><%=s %><br />dlksfjsdlkfjsdlkfjlkj
被resource的也可以是servlet，其实和jsp是一个道理，，个人觉得用jsp在修改返回数据的时候会更加方便些。
先定义个servlet
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