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  

1. package com.yoyo.portlet;  
2.   
3. import java.io.IOException;  
4.   
5. import javax.portlet.GenericPortlet;  
6. import javax.portlet.PortletException;  
7. import javax.portlet.PortletRequestDispatcher;  
8. import javax.portlet.RenderRequest;  
9. import javax.portlet.RenderResponse;  
10.   
11. public class TestPortlet extends GenericPortlet  
12. {  
13.   
14.     public void doView(RenderRequest request, RenderResponse response) throws PortletException, IOException   
15.     {  
16.         response.setContentType("text/html");  
17.           
18.         PortletRequestDispatcher rd = getPortletContext().getRequestDispatcher("/index.jsp");  
19.       
20.         rd.include(request, response);  
21.     }  
22.       
23.     public void doEdit(RenderRequest request, RenderResponse response) throws PortletException, IOException   
24.     {  
25.         response.setContentType("text/html");  
26.       
27.         String jspName = getPortletConfig().getInitParameter("jspEdit");  
28.       
29.         PortletRequestDispatcher rd = getPortletContext().getRequestDispatcher(  
30.                 jspName);  
31.       
32.         rd.include(request, response);  
33.     }  
34. }  

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  

1. <?xml version="1.0" encoding="UTF-8"?>  
2. <portlet-app xmlns="http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd"  
3.     version="1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
4.     xsi:schemaLocation="http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd  
5.                         http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd">  
6.   
7.     <portlet>  
8.         <description>Test the portlet</description>  
9.         <portlet-name>hello</portlet-name>  
10.         <display-name>test portlet</display-name>  
11.         <portlet-class>com.yoyo.portlet.TestPortlet</portlet-class>  
12.           
13.         <expiration-cache>-1</expiration-cache>  
14.         <supports>  
15.             <mime-type>text/html</mime-type>  
16.             <portlet-mode>VIEW</portlet-mode>  
17.             <portlet-mode>EDIT</portlet-mode>  
18.         </supports>  
19.         <supported-locale>en</supported-locale>  
20.         <portlet-info>  
21.             <title>TEst the portlet</title>  
22.             <short-title>test</short-title>  
23.             <keywords>test,portlet</keywords>  
24.         </portlet-info>  
25.     </portlet>  
26.       
27. </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  

1. <?xml version="1.0" encoding="UTF-8"?>  
2. <web-app version="2.4"   
3.     xmlns="http://java.sun.com/xml/ns/j2ee"   
4.     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   
5.     xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   
6.     http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">  
7.       
8.     <servlet>  
9.         <servlet-name>test</servlet-name>  
10.         <servlet-class>org.apache.pluto.core.PortletServlet</servlet-class>  
11.         <init-param>  
12.             <param-name>portlet-name</param-name>  
13.             <param-value>hello</param-value>  
14.         </init-param>  
15.         <load-on-startup>1</load-on-startup>  
16.     </servlet>  
17.       
18.     <!-- 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 -->  
19.     <!-- 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-->  
20.     <servlet-mapping>  
21.         <servlet-name>test</servlet-name>  
22.         <url-pattern>/PlutoInvoker/hello</url-pattern>  
23.     </servlet-mapping>  
24.     <welcome-file-list>  
25.         <welcome-file>index.jsp</welcome-file>  
26.     </welcome-file-list>  
27. </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。