初步使用liferay portal Hello World(原创）

1. 编写HelloWorldPortlet,HelloJSPPortlet类

package com.educhina.portal;
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import javax.portlet.GenericPortlet;
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import java.io.IOException;
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import javax.portlet.PortletException;
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import javax.portlet.PortletRequestDispatcher;
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import javax.portlet.RenderRequest;
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import javax.portlet.RenderResponse;
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public class HelloJSPPortlet extends GenericPortlet {
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public void doView(RenderRequest req, RenderResponse res)
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throws IOException,PortletException
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{
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res.setContentType("text/html");
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String jspName=getPortletConfig().getInitParameter("view-jsp");
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PortletRequestDispatcher rd = getPortletContext().getRequestDispatcher(jspName);
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rd.include(req,res);
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}
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public void doEdit(RenderRequest req, RenderResponse res)
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throws IOException,PortletException
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{
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res.setContentType("text/html");
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String jspName=getPortletConfig().getInitParameter("edit-jsp");
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PortletRequestDispatcher rd=getPortletContext().getRequestDispatcher(jspName);
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rd.include(req,res);
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}
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}
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HelloJSPPortlet: 调用jsp.

package com.educhina.portal;
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import java.io.IOException;
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import javax.portlet.GenericPortlet;
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import javax.portlet.RenderRequest;
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import javax.portlet.RenderResponse;
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import javax.portlet.PortletException;
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public class HelloWorldPortlet extends GenericPortlet{
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public void doView(RenderRequest req, RenderResponse res)
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throws IOException,PortletException
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{
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res.setContentType("text/html");
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res.getWriter().println("hello world");
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}
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public void doEdit(RenderRequest req, RenderResponse res)
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throws IOException,PortletException
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{
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res.setContentType("text/html");
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res.getWriter().println("hello world");
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}
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}

HelloWorldPortlet:直接输出到portlet

2.为HelloJSPPortlet建立jsp页面.代码如下:

<table cellpadding="8" cellspacing="0" width="100%">
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<tr>
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<td>
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<font class="Portlet-font" style="font-size:x-small;">
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this is a <b>Sample JSP Portlet</b> used in viewing in viewing model. use this a quick
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way to include jsps.
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</font>
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</td>
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</tr>
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</table>
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注意:不能包含有<head><bady><html>的标签.只能包含原来是<body></body>内部的html内容,<head>,<body> <html>信息由Portal页面来提供. 只在在jsp页面里使用了

<%@taglib uri="http://java.sun.com/portlet" prefix="portlet" %>
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<portlet:defineObjects/>

才可以直接操作portlet的一些变量，比如renderResponse, renderRequest, PortletConfig .

3.部署liferay portal
　　一＞修改portlet.xml文件(C:\liferay-portal-tomcat-jdk5-4.2.1\webapps\ROOT\WEB-INF)中．
portlet定义portlet初始化信息
在<portlet-app>节点下增加：

<portlet>
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<portlet-name>HelloWorldPortlet</portlet-name>
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<display-name>HelloWorldPortlet</display-name>
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<portlet-class>com.educhina.portal.HelloWorldPortlet</portlet-class>
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<expiration-cache>0</expiration-cache>
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<supports>
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<mime-type>text/html</mime-type>
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</supports>
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<supports>
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<mime-type>text/html</mime-type>
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<portlet-mode>edit</portlet-mode>
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</supports>
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<portlet-info>
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<title>HelloWorldPortlet</title>
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<short-title>HelloWorldPortlet</short-title>
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<keywords>HelloWorldPortlet</keywords>
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</portlet-info>
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<security-role-ref>
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<role-name>guest</role-name>
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</security-role-ref>
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<security-role-ref>
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<role-name>power-user</role-name>
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</security-role-ref>
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<security-role-ref>
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<role-name>user</role-name>
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</security-role-ref>
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</portlet>
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<portlet>
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<portlet-name>HelloJSPPortlet</portlet-name>
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<display-name>HelloJSPPortlet</display-name>
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<portlet-class>com.educhina.portal.HelloJSPPortlet</portlet-class>
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<init-param>
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<name>view-jsp</name>
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<value>/portlet/testPortlet/view.jsp</value>
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</init-param>
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<init-param>
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<name>edit-jsp</name>
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<value>/portlet/testPortlet/edit.jsp</value>
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</init-param>
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<expiration-cache>0</expiration-cache>
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<supports>
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<mime-type>text/html</mime-type>
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</supports>
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<supports>
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<mime-type>text/html</mime-type>
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<portlet-mode>edit</portlet-mode>
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</supports>
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<portlet-info>
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<title>HelloJSPPortlet</title>
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<short-title>HelloJSPPortlet</short-title>
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<keywords>HelloJSPPortlet</keywords>
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</portlet-info>
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<security-role-ref>
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<role-name>guest</role-name>
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</security-role-ref>
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<security-role-ref>
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<role-name>power-user</role-name>
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</security-role-ref>
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<security-role-ref>
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<role-name>user</role-name>
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</security-role-ref>
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</portlet>

注意：
　<init-param>
   <name>edit-jsp</name>
   <value>/portlet/testPortlet/edit.jsp</value>
  </init-param>　
告诉系jsp的位置,也就是HelloJSPPortlet类中
　String jspName=getPortletConfig().getInitParameter("view-jsp");
  PortletRequestDispatcher rd = getPortletContext().getRequestDispatcher(jspName);
  rd.include(req,res);
所用到的.
所以编写好的edit.jsp放入(C:\liferay-portal-tomcat-jdk-mytest\webapps\ROOT\html\portlet\testPortlet)中．
      二＞修改liferay-portay.xml ------定义portlet模板，实例总数，是否允许重重定义等
＜liferay-portay-app>节点下:

<portlet>
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<portlet-name>HelloWorldPortlet</portlet-name>
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<struts-path>HelloWorldPortlet</struts-path>
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<use-default-template>true</use-default-template>
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<instanceable>true</instanceable>
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</portlet>
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<portlet>
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<portlet-name>HelloJSPPortlet</portlet-name>
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<struts-path>HelloJSPPortlet</struts-path>
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<use-default-template>true</use-default-template>
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<instanceable>true</instanceable>
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</portlet>

    三>修改：liferay-display.xml---定义portlet所属的类别．liferay Portal定义了一个category.test类别.将HelloWorldPortlet和HelloJSPPortlet归属于category.test
<category name="category.test">
   <portlet id="HelloWorldPortlet" />
  <portlet id="HelloJSPPortlet" />
  <portlet id="47" />
</category>

另外把两个类包拷贝到（C:\liferay-portal-tomcat-jdk-mytest\webapps\ROOT\WEB-INF\classes）目录下．
运行bin/startup.bat　ok!

posted on 2007-04-19 09:24 lixiaoji 阅读(1049) 评论(0) 编辑收藏

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