基于Jetspeed的Portlet开发探讨

门户为内部和外部用户访问 Web站点的信息和应用提供了一个单一的访问入口 ,一个 portlet是门户中提供特殊服务或信息的窗口。文中基于公开源代码的企业信息门户软件 Jetspeed上讨论了 Jetspeed的体系结构及其调用流程 ,给出了开发 portlet的例子 ,并详细研究了对 portlet的外观的改进方法——通过改写 Base Portlet Skin基类和Abstract Portlet Control基类的属性和行为 ,以及在 Portlet Skin和 Portlet Control中增加相应的接口来实现改进。

Developing Portlet Based on Jetspeed

Portals are Web sites that serve as a starting point to information and applications on the Internet or from an intranet.A portlet is a window in the portal that provides a specific service or information.This paper is based on Jetspeed,which is an Open Source implementation of an Enterprise Information Portal,firstly discusses the architecture of Jetspeed,then gives an example of how to develop a portlet,lastly studies the method of how to replace skin of portlet.A porlet can change its appearance by rewriting BasePortletSkin base class and AbstarctPortletControl base class.At the same time,PortletSkin interface class and PortletControl interface class must be added to the correspondence interface function.