Research On Distributed Application System Based On Web Services

With the development of networks, the applications of distributed systems in Bussiness got ever-increasing, and distributed computing technology is the key to achieving distributed system. Although a number of well-known distributed computing solutions can be choosed, they have a lot of shortcomings: Among them the lack of interoperability, and larger limitations of technical application, not suitable for the further expansion of the Internet as the main loosely coupled network environment. With the current increase of interaction between enterprises, how to achieve the various application systems integration in the more extensive network has become the biggest distributed computing system needs. The recent rise of the Web Services technology can easily overcome traditional distributed computing solutions for the deficiencies and achieve seamless integration of Web services. Web Services's the main objective in the various existing heterogeneous platform is built on the basis of a common platform and language unrelated to the technology layer, the application on the various platforms depend on this technology to implement the mutual connection and Integration.Firstly this paper analyses and compares various traditional distributed technology comparison, research on all kinds of advantages and shortcomings of traditional distributed computing,then contrast them with the Web Services technology and the principles ;In-depth analysis of the structure advantage of Web Services technology. Web Services is to clarify how to overcome the shortcomings of traditional programmes and build a new generation of the Internet distributed application development model.Then, this paper based on the technology principles, architecture of Web Services and J2EE technology, propose the architecture of Online Shopping a Web Services-based. And its results are applied to Online Shopping in order to verification the function of Online Shopping architecture. The system provides a Web-based user interface,goods catglog service, browse goods service,orders service. Consumers can in their own internal system adopted by the Programming (called Web services) to be issued the Distributed System product information, and easily will be the required information integration products to the local database. To achieve between its own systems and products suppliers self-minimal manual intervention of the automation system integration.Finally, Web services security issues have also done a more in-depth discussions and focuses on Web services security-related technical problems, disscuss on several Web services to achieve security strategy in this paper. Discussion in detail the SOAP message of the information used public key encryption. The adoption of digital signature technology and other related technical methods to solve the information security problems of message in transmit and give a detailed implementation process.