基于Jetspeed实现Web应用到Portlet应用的转变

Portal和Struts来源于对灵活的业务模型的追求,推动着新一代应用集成框架的发展和成熟.Jetspeed是Apache Jakarta项目中的开发源码门户系统,是企业级信息门户的原型实现.通过在Jetspeed基础上进行的二次开发,论述了如何实现基于Struts 2 的Web应用到Portlet应用的转变.     

集成化门户WJPortal开发与应用

针对现有门户在Portlet集成、访问模式、远程调用等方面存在的不足。结合WSRP框架,设计并开发了一个符合JSR168标准的开放式信息门户WJPortal。该门户采用远程Portlet代理、Portal容器和WSRP Stub等技术实现,通过Client、Interface、Provider三大组件的开发,为企业信息门户的开发提供了一个更加统一、便捷、开放、灵活的框架结构。基于WSRP门户构建了一个水利信息门户服务平台,给出了应用实例,提高了水利业务Portlet的集成能力。     

用Portlet技术实现数字化校园信息资源的整合

建设数字化校园是推动教育信息化的重要系统工程,而整合各种信息资源是当前研究的重点问题,其中有很多策略和技术问题需要解决.根据整合资源的需要,提出一个基于Portlet技术的门户解决方案,论述了门户框架的具体工作方式以及Portlet技术的实现原理,从而解决了数字校园建设中的系统集成,信息整合和个性化信息服务的问题.通过Portlet技术构建的校园信息门户,降低了门户实现和管理的成本,提高了工作效率,在数字化校园的建设中将会起着较大的作用.     

基于Portlet的数字化校园信息门户的设计

数字化校园信息门户的建设仍存在很多策略和技术问题需要解决.从Portal技术的建设目标出发,探讨了Portal的体系结构、描述技术规范及工作流程.根据校园门户建设的需要,提出了一套基于Portlet技术的校园信息门户建设方案,从而使得在构建数字化校园的过程中系统融合、信息集成和用户服务个性化的问题得到解决.通过Portlet技术构建的校园信息门户,减小了门户的实现难度,降低了管理开销,提高了工作效率,在教字化校园的建设中发挥了重要作用,并取得了良好效果.     

基于JetSpeed 的多portlet 流程协作机制研究与实现

当前门户的功能定位已经从传统的信息集成转向应用集成。门户环境中应用间的进一步集成实际上表现为Portlet 协作问题。在分析现有协作方法的基础上,遵循jsr286 规范,提出了可扩展的多Portlet的流程协作框架,并结合开源门户产品JetSpeed2.0 进行开发,从而解决了数字校园建设中利用门户实现应用交互协作和个性化信息服务的关键问题。     

基于Jetspeed的网格门户系统的设计

Jetspeed作为一种web应用引擎,它提供了portlet API和portlet的运行环境.本文介绍了什么是网格门户,阐述了Jetspeed的原理,并以myproxy portlet为例说明了如何使用Jetspeed实现网格门户.     

Jetspeed--企业信息门户的实现

介绍了一种企业信息门户的实现技术Jetspeed，它以Turbine作为其实现的底层架构，提供了丰富的个性化设置特性，支持多种客户端设备，并具有安全控制等功能。     

基于Portlet的校园信息门户的设计与实现

建设数字化校园是推动教育信息化的重要系统工程,是当前国内各个大学研究的热点问题,其中有很多策略和技术问题需要解决。根据校园门户建设的需要,该文提出了一个基于Portlet技术的校园信息门户的方案,论述了校园信息门户框架的具体工作方式以及Portht技术的实现原理,从而解决了数字校园建设中的系统集成,信息整合和个性化信息服务的问题。通过Porflet技术构建的校园信息门户,降低了门户实现和管理的成本,提高了工作效率,在数字化校园的建设中将会产生强大的影响。     

基于Portal技术的数字化校园门户的研究

首先介绍了门户(Portal)的工作原理及其技术规范,论述了校园信息门户框架的具体工作方式以及Portlet技术的实现原理,从而解决了数字校园建设中的系统集成、信息整合和个性化信息服务的问题.     

基于Liferay的企业信息门户模型及应用

介绍了一种开源Portal平台Liferay,对其体系结构进行了分析,讨论了Portlet技术及其在Liferay下的开发。提出了企业信息门户的一般化模型,采用该模型及基于Portal技术的门户架构,通过Liferay平台实现了企业信息门户。     

Assessment of portlet quality: Collecting real experience

Owing to the current complexity of portals, vendors of portal frameworks are striving to bring component-based development to the Web: ‘portlets’. Portal users find the portal screen split into a number of sections, each containing separate ‘portlets’, that run or link to the application elements to which the particular user has the appropriate access rights. Taking into account that the success of a portal depends on customers using it and then returning to it, its quality must be assured. If the quality of a portal is to be guaranteed, the first step is to ensure that the portal is built with portlets which have a “good” quality level. Bearing all this in mind, this paper has set as its objective the development of a portlet quality model which includes different measures and which is able to determine the quality level of a specific portlet. In addition, the model has been applied to a concrete portlet: as a result, the quality level for the different characteristics that make up the portlet quality model has been assessed.     

一种多Portlet互操作框架

企业信息Portal作为企业信息集成的工具,主要是基于Portlet在表现层进行集成。这种集成实质上就是Portlet之间数据交互问题。在分析现有数据交互方法基础上,遵循JSR-168和WSRP规范,通过扩展Portlet实现接口,提出了多Portlet数据交互框架,并基于XML技术封装交互信息,实现Portlet之间信息交互。     

Standards for second-generation portals

By integrating applications and resources, portals let users access information in a simple, straightforward manner. Currently, most portals let users create one or more personal pages composed of portlets - interactive Web mini-applications. Until recently, no standards for portlets existed, and thus consuming remote portlets in a generic way or deploying portlets in one portal server that were developed in a different one has been impossible. Two standards released in Fall 2003 - the Web Services for Remote Portlets (WSRP) and the Java portlet specification - address these problems. This articles outlines these standards and presents a typical architecture for a standards-based portal.     

From page-centric to portlet-centric Web development: Easing the transition using MDD

Portlet syndication is the next wave following the successful use of content syndication in current portals. Portlets can be regarded as Web components, and the portal as the component container where portlets are aggregated to provide higher-order applications. This perspective requires a departure from how current Web portals are envisaged. The portal is no longer perceived as a set of pages but as an integrated set of Web components that are now delivered through the portal. From this perspective, the portal page now acts as a mere conduit for portlets. Page and page navigation dilute in favor of portlet and portlet orchestration. However, the mapping from portlet orchestration (design time) to page navigation (implementation time) is too tedious and error prone. For instance, the fact that the same portlet can be placed in distinct pages produces code clones that are repeated along the pages that contain this portlet. This redundancy substantiates in the first place the effort to move to model-driven development. This work uses the eXo platform as the target PSM, and the PIM is based on Hypermedia Model Based on Statecharts. The paper shows how this approach accounts for portal validation/verification to be conducted earlier at the PIM level, and streamlines both design and implementation of eXo portals. A running example is used throughout the paper.     

An authoring technology for multidevice Web applications

The rapid proliferation of mobile computing devices has increased the complexity and cost of cross-platform application development. Multidevice authoring technology (MDAT) lets developers build a generic application common to multiple devices and customize it for specific devices. We developed MDAT an end-to-end development methodology and toolset, to reduce the complexity of creating interactive, form-based Web applications that execute on heterogeneous devices. Web application refers to conventional, servlet-based Web applications as well as portlet applications. A portlet is a Web application component that a Web portal server aggregates with other portlets.     

Improving a portlet usability model

Second-generation portals are far from being monolithic pieces of software. Their complexity calls for a component-based approach where portlets are the technical enabler. That being the case nowadays portals tend to be constructed by means of portlets, i.e. a multi-step, user-facing application to be delivered through a Web application. The proposal for and ample support given to the WSRP (Web Services for Remote Portlets) portlet standard predict an emerging portlet market. A main requirement for the blossoming of this market is the existence of portlet quality models that assist portal developers to select the appropriate portlet. This paper focuses on usability. The aim, therefore, is to develop a usability model for portlets. The paper presents such a model and its realisation for a sample case.

联邦门户中基于WSRP和ALSB的portlet协作研究

在研究联邦门户框架的基础上,比较了WSRP2.0规范中的portlet协作方法,提出一种基于WSRP和ALSB的可扩展的跨门户portler协作框架.该协作方式一方面提高了portlet的可重用性,并最大限度的保持了联邦门户内各个门户的独立性;另一方面增强了portlet协作的自由度,可以很快适应多变的业务需求,从而实现了联邦门户环境下更高层次的应用集成与交互.     

基于Jetspeed的网格门户系统的设计

Jetspeed作为一种web应用引擎,它提供了portletAPI和portlet的运行环境。本文介绍了什么是网格门户,阐述了Jetspeed的原理,并以myproxyportlet为例说明了如何使用Jetspeed实现网格门户。     

基于Portlet的网格门户系统设计

网格门户是网格环境的用户接口,已经日益成为一个重要的网格研究领域.Portlet是一种可定制、可插拔和可重用的Web组件,目前已经提交申请成为Java规范.使用portl武技术开发网格门户,有利于提高网格门户的可扩展性和可维护性,支持用户个性化的网格使用方式,方便对门户的配置管理.详细介绍了基于portlet的网格门户系统的设计思想及其实现,并以MPI作业提交为例阐述了系统中各个portlet之间的交互方式.