portlet初学习及HelloWorld例子

1. 在myeclipse中新建一个web project，在src中新建如下类：

 

Java代码


 




package com.yoyo.portlet;  
  
import java.io.IOException;  
  
import javax.portlet.GenericPortlet;  
import javax.portlet.PortletException;  
import javax.portlet.PortletRequestDispatcher;  
import javax.portlet.RenderRequest;  
import javax.portlet.RenderResponse;  
  
public class TestPortlet extends GenericPortlet  
{  
  
    public void doView(RenderRequest request, RenderResponse response) throws PortletException, IOException   
    {  
        response.setContentType("text/html");  
          
        PortletRequestDispatcher rd = getPortletContext().getRequestDispatcher("/index.jsp");  
      
        rd.include(request, response);  
    }  
      
    public void doEdit(RenderRequest request, RenderResponse response) throws PortletException, IOException   
    {  
        response.setContentType("text/html");  
      
        String jspName = getPortletConfig().getInitParameter("jspEdit");  
      
        PortletRequestDispatcher rd = getPortletContext().getRequestDispatcher(  
                jspName);  
      
        rd.include(request, response);  
    }  
}  

package com.yoyo.portlet;

import java.io.IOException;

import javax.portlet.GenericPortlet;
import javax.portlet.PortletException;
import javax.portlet.PortletRequestDispatcher;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;

public class TestPortlet extends GenericPortlet
{

public void doView(RenderRequest request, RenderResponse response) throws PortletException, IOException
{
response.setContentType("text/html");

PortletRequestDispatcher rd = getPortletContext().getRequestDispatcher("/index.jsp");

rd.include(request, response);
}

public void doEdit(RenderRequest request, RenderResponse response) throws PortletException, IOException
{
response.setContentType("text/html");

String jspName = getPortletConfig().getInitParameter("jspEdit");

PortletRequestDispatcher rd = getPortletContext().getRequestDispatcher(
jspName);

rd.include(request, response);
}
}

 

 

2. 在WebRoot/WEB-INF下面新建一个portlet.xml的文件，里面内容如下：

 

Xml代码


 




<?xml version="1.0" encoding="UTF-8"?>  
<portlet-app xmlns="http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd"  
    version="1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
    xsi:schemaLocation="http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd  
                        http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd">  
  
    <portlet>  
        <description>Test the portlet</description>  
        <portlet-name>hello</portlet-name>  
        <display-name>test portlet</display-name>  
        <portlet-class>com.yoyo.portlet.TestPortlet</portlet-class>  
          
        <expiration-cache>-1</expiration-cache>  
        <supports>  
            <mime-type>text/html</mime-type>  
            <portlet-mode>VIEW</portlet-mode>  
            <portlet-mode>EDIT</portlet-mode>  
        </supports>  
        <supported-locale>en</supported-locale>  
        <portlet-info>  
            <title>TEst the portlet</title>  
            <short-title>test</short-title>  
            <keywords>test,portlet</keywords>  
 
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       </portlet-info>  
    </portlet>  
      
</portlet-app>  

<?xml version="1.0" encoding="UTF-8"?>
<portlet-app xmlns="http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd"
version="1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd"> 
<portlet>
<description>Test the portlet</description>
<portlet-name>hello</portlet-name>
<display-name>test portlet</display-name>
<portlet-class>com.yoyo.portlet.TestPortlet</portlet-class>

<expiration-cache>-1</expiration-cache>
<supports>
<mime-type>text/html</mime-type>
<portlet-mode>VIEW</portlet-mode>
<portlet-mode>EDIT</portlet-mode>
</supports>
<supported-locale>en</supported-locale>
<portlet-info>
<title>TEst the portlet</title>
<short-title>test</short-title>
<keywords>test,portlet</keywords>
</portlet-info>
</portlet>

</portlet-app>

 

 

3. 修改WebRoot/WEB-INF下面的web.xml文件，内容如下：

 

Xml代码


 




<?xml version="1.0" encoding="UTF-8"?>  
<web-app version="2.4"   
    xmlns="http://java.sun.com/xml/ns/j2ee"   
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   
    http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">  
      
    <servlet>  
        <servlet-name>test</servlet-name>  
        <servlet-class>org.apache.pluto.core.PortletServlet</servlet-class>  
        <init-param>  
            <param-name>portlet-name</param-name>  
            <param-value>hello</param-value>  
        </init-param>  
        <load-on-startup>1</load-on-startup>  
    </servlet>  
      
    <!-- 下面的<servlet-name>test</servlet-name>中的test和上面的<servlet></servlet>中<servlet-name></servlet-name>的名字对应 -->  
    <!-- 下面的<url-pattern>/PlutoInvoker/hello</url-pattern>中的hello则与portlet.xml中<portlet></portlet>中<portlet-name></portlet-name>的名字对应-->  
    <servlet-mapping>  
        <servlet-name>test</servlet-name>  
        <url-pattern>/PlutoInvoker/hello</url-pattern>  
    </servlet-mapping>  
    <welcome-file-list>  
        <welcome-file>index.jsp</welcome-file>  
    </welcome-file-list>  
</web-app>  

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> 
<servlet>
<servlet-name>test</servlet-name>
<servlet-class>org.apache.pluto.core.PortletServlet</servlet-class>
<init-param>
<param-name>portlet-name</param-name>
<param-value>hello</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>

<!-- 下面的<servlet-name>test</servlet-name>中的test和上面的<servlet></servlet>中<servlet-name></servlet-name>的名字对应 -->
<!-- 下面的<url-pattern>/PlutoInvoker/hello</url-pattern>中的hello则与portlet.xml中<portlet></portlet>中<portlet-name></portlet-name>的名字对应-->
<servlet-mapping>
<servlet-name>test</servlet-name>
<url-pattern>/PlutoInvoker/hello</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

 

4. 将tomcat/shared/lib下面的jar包引到项目中来（我的里面已经放好了，是做其他项目用的到的，在这个中可能有些jar包不需要），这些jar包如下：castor-1.1.1.jar，commons-codec-1.3.jar，commons-httpclient-3.0.1.jar，commons-logging.jar，log4j-1.2.11.jar，pluto-container-1.1.6.jar，pluto-descriptor-api-1.1.6.jar，pluto-descriptor-impl-1.1.6.jar，pluto-taglib-1.1.6.jar，portlet-api-1.0.jar，simpleAuthClient.jar，xpp3_min-1.1.4c.jar，xstream-1.3.jar。

 

 

经过以上步骤，一个简单的portlet就建好了。下载pluto-current-bundle包，解压后启动bin目录下的startup.bat，打开http://localhost:8080/pluto/portal，登陆进去后，选择上面的Pluto Admin，新建一个页面，并在下面选择自己的portlet项目，这样就可以查看效果了。