The Research Of Enterprise Systems Integration Based On Web Services

With the development of enterprise, more and more application systems are used in enterprise. Historically, applications were written to solve specific, well-delineated problems. There was little vision at the time of an application landscape that would cover the whole range of business requirements, so no need for an integrated architecture was seen, solutions would evolve on a great variety of platforms. As a result, it is quite likely to result in trade difficulty by lack of exact information share in time to succeed in this environment, many technologies have been applicated in the Enterprise Application Integration to resolve the crisis of information island. However, various integration technology and implementation have the advantages and disadvantages.As a new open distributed technology, Web Services has the characteristic of high interoperation that can compose new systems easily by integrating existing ones. With web services applied widely, how to enhance the quanlity of web services has been the biggest concern of the Systems Itegration research area.The article analyses domestic and international research status and the existing problems on Enterprise Applications integration firstly. Secondly, it introduces Web Servise,SOA,Enterprise Services Bus and middlewares technology, this is the underlied theory of this article, going on with it, it puts forward an Applications Integration technology model of Enterprise Applications Integration based on the characteristics of DPCA Application System existed , and implemented in the prototype model project, which is the core of it Following efforts are presented in this dissertation:1. According to DPCA Application Systems charactristics and requirments in existence as prototype, using Web Services framework providing system integration framework, dicusses the key technical issues.2. The Integration model is built on top of the Java Messaging Service (JMS) delivered in WebSphere Application Server,which means that it is able to expose messaging artifacts, such as queues and topics, as Web services.3. Described Web services security functions and configure Web services security in the Integration model.4. Implements the Web Services Atomic Transaction (WS-AT) specification in WebSphere Application Server V 6 . This specification enables Web service applications to participate in global transactions distributed across a heterogeneous Web service environment.5. Dynamic caching services for Web services to improve The performance and throughputs in WebSphere Application Server Version 6.0.