Liferay的第一个例子（HelloWorld）

       第一个Liferay例子——Hello World

 

 

 

1 打开MyEclipse，新建一个Java Project，如：MyLiferay

 

2 在MyLiferay下新建webRoot子Folder，在webRoot下新建WEB-INF子Folder

 

3  右键项目名选择“Build Path—>Configure Build Path”，将Source选项下的Default output folder设置为MyLiferay/webRoot/WEB-INF/classes

 

4   在Libraries选项下点击Add External JARs...，将liferay-portal-tomcat-6.0-5.2.3包下的tomcat6.0.18/lib/ext目录下的所有jar包添加到Libraries下

 

如下图所示：

 

 

 

5  在webRoot文件夹下新建view.jsp页面，在页面上显示“Hello World！”

 

 

6 新建MyPortlet.java类，Package设置为：com.company.portal，继承javax.portlet.GenericPortlet抽象类；在MyPortlet.java中实现GenericPortlet的doDispatch、doEdit、

    doHelp、doView、init和ProcessAction这五个方法，具体内容如下： 

 

package com.jyyr.portal;

import java.io.IOException;

import javax.portlet.ActionRequest;

import javax.portlet.ActionResponse;

import javax.portlet.PortletException;

import javax.portlet.PortletRequestDispatcher;

import javax.portlet.RenderRequest;

import javax.portlet.RenderResponse;

import com.liferay.portal.kernel.log.Log;

import com.liferay.portal.kernel.log.LogFactoryUtil;

/**

*

* @CopyRight 2011

* @Create by admin on 2011-1-16 下午02:42:55

* @Function

*

* @Version 1.0

* @Update

*/

public class MyPortlet extends javax.portlet.GenericPortlet{

    protected String editJSP;

    protected String helpJSP;

    protected String viewJSP;

 

    private static Log _log = LogFactoryUtil.getLog(MyPortlet.class);

 

    @Override

    protected void doDispatch(RenderRequest request, RenderResponse response)

            throws PortletException, IOException {

        String jspPage = request.getParameter("jspPage");

        if(jspPage != null){

            include(jspPage,request,response);

        }else{

            super.doDispatch(request, response);

        }

    }

 

    @Override

    protected void doEdit(RenderRequest request, RenderResponse response)

            throws PortletException, IOException {

        if(request.getPreferences() == null){

            super.doEdit(request, response);

        }else{

            include(editJSP,request,response);

        }

    }

 

    @Override

    protected void doHelp(RenderRequest request, RenderResponse response)

            throws PortletException, IOException {

        include(helpJSP,request,response);

    }

 

    @Override

    protected void doView(RenderRequest request, RenderResponse response)

            throws PortletException, IOException {

        include(viewJSP,request,response);

        }

 

    @Override

    public void init() throws PortletException {

        this.editJSP = getInitParameter("edit-jsp");

        this.helpJSP = getInitParameter("help-jsp");

        this.viewJSP = getInitParameter("view-jsp");

    }

 

    @Override

    public void processAction(ActionRequest request, ActionResponse response)

            throws PortletException, IOException {

    }

 

    protected void include(String path,RenderRequest request,RenderResponse response)

            throws PortletException, IOException {

        PortletRequestDispatcher prd = getPortletContext().getRequestDispatcher(path);

        if(prd == null){

            _log.error(path+" is not a valid include");

        }else{

            prd.include(request, response);

        }

    }

}

7 在WEB-INF目录下新建portlet.xml文件，内容如下：

xml version="1.0" encoding="UTF-8"?>

<portlet-app xmlns="" xmlns:xsi="" xsi:schemaLocation=" /opt/SUNWportal/dtd/portlet.xsd" version="2.0">

    <portlet>

        <portlet-name>myliferayportlet-name>

        <display-name>Sample JSPdisplay-name>

        <portlet-class>com.company.portal.MyPortletportlet-class>

        <init-param>

            <name>view-jspname>

            <value>/view.jspvalue>

        init-param>

        <expiration-cache>0expiration-cache>

        <supports>

            <mime-type>text/htmlmime-type>

        supports>

        <portlet-info>

            <title>HelloWorldtitle>

            <short-title>HelloWorldshort-title>

            <keywords>HelloWorldkeywords>

        portlet-info>

        <security-role-ref>

            <role-name>administratorrole-name>

        security-role-ref>

        <security-role-ref>

            <role-name>guestrole-name>

        security-role-ref>

        <security-role-ref>

            <role-name>power-userrole-name>

        security-role-ref>

        <security-role-ref>

            <role-name>userrole-name>

        security-role-ref>

    portlet>

portlet-app>

8 在WEB-INF目录下新建liferay-display.xml，内容如下：

xml version="1.0" encoding="UTF-8"?>

DOCTYPE display PUBLIC "-//Liferay//DTD Display 5.2.0//EN" "">

<display>

    <category name="category.test">

        <portlet id="myliferay">portlet>

    category>

display>

9 启动MyEclipse中的Tomcat，同时通过dos进入MyLiferay项目的webRoot目录下，输入：jar cvf MyLiferay.war WEB-INF view.jsp，将WEB-INF和view.jsp一起打包。如下图：

 

Microsoft Windows XP [版本 5.1.2600]

 

C:\Documents and Settings\Administrator>d:

 

D:\>cd program

 

D:\program>cd Liferay

 

D:\program\Liferay>cd MyLiferay

 

D:\program\Liferay\MyLiferay>cd webRoot

 

D:\program\Liferay\MyLiferay\webRoot>jar cvf MyLiferay.war WEB-INF view.jsp

标明清单(manifest)

增加：WEB-INF/(读入= 0) (写出= 0)(存储了 0%)

增加：WEB-INF/classes/(读入= 0) (写出= 0)(存储了 0%)

增加：WEB-INF/classes/com/(读入= 0) (写出= 0)(存储了 0%)

增加：WEB-INF/classes/com/company/(读入= 0) (写出= 0)(存储了 0%)

增加：WEB-INF/classes/com/company/portal/(读入= 0) (写出= 0)(存储了 0%)

增加：WEB-INF/classes/com/company/portal/MyPortlet.class(读入= 3042) (写出= 1330

)(压缩了 56%)

增加：WEB-INF/liferay-display.xml(读入= 284) (写出= 192)(压缩了 32%)

增加：WEB-INF/liferay-portlet.xml(读入= 863) (写出= 287)(压缩了 66%)

增加：WEB-INF/portlet.xml(读入= 1391) (写出= 448)(压缩了 67%)

增加：view.jsp(读入= 832) (写出= 448)(压缩了 46%)

 

D:\program\Liferay\MyLiferay\webRoot>

 

 

 

10 上步服务器启动后会弹出liferay的官网登陆页面，用系统自带的管理员登陆，进入账户

 

 

11 打开账户页面右上角的下拉列表，选择Add Application，如下图：

 然后点击Install More Applications，如下图：

 

 

点击Back to Guest，重新选择Add Application，可以看到test节点下出现了myfirstportal节点，拖动该节点到页面上即可显示view.jsp的

 

12 到此，我们的第一个Liferay例子——Hello World已经完成。感兴趣的朋友可以尝试改变view.jsp的内容后会有什么效果。