The Design And Implementation Of Electronic Commerce System Based On Web Services

In nature, E-Commerce is a modern business mode that transmitting and exchanging business data through network and communication instruments, and dealing with these datas according to the business process. The traditional distributed computing technologies (CORBA, DCOM, EJB, etc) have some problems which are hard to be solved, such as the communication between different applications on heterogeneous platforms, going through the firewall transparently, and the complexities of implementation. Because of all these problems, the current Electronic Commerce application patterns can not satisfy the requirements of business integration among companies.As a more flexible, extensible, dynamic and low priced component technologies, Web Services introduces a new approach into the Enterprise Application Integration and the development of E-Commerce system, and also gives birth to the distributed dynamic E-Commerce application pattern.The paper expatiates on the theories and applications of Web services, applies it to the B2B E-Commerce model on the basis of the summarization of E-Commerce application patterns and architectures, designs a dynamic E-Commerce multi-layers framework named DECAWS, and then discusses some emphasis of framework's implementation in detail, such as the access control and message secure transfer, dynamic business integration, service management mechanism and transaction control mode. During these discussions, addresses to the SOAP message's encryption and secure transfer, and to the optimal processing methods of business rules depends on each other's statement, in the end, analyzes the composition and dynamic discovery mechanism of Web Services, proposes a Three-Phase Commit protocol, formulates the transaction controlling processes in the frameworkThe framework proposed in this paper has the characteristics of Web Servces, and owns the advantages of this new distributed computing technology. The dynamic E-Commerce system can be easily developed according to its architecture, and can effectively integrate the enterprise application based on B2B. And this framework has been used to the development of management systems for enterprise logistics, and it is proved that it can fufill the needs of dynamic E-Commerce system, and its architecture owns the following characteristics: loose coupling, simple, extensible, reusable, and so on.