Middleware Technology Of Electronic Transactions And Implementation

Traditional E-trading systems based on C/S structure are still widely used in China today, but inefficiency and insecurity are the common problems of C/S pattern. To make things worse, some systems even think less of identity authentication and data encryption. To solve these problems, a new commodity trading structure and system needs to be studied and developed. This paper discusses and realizes a new E-trading system by the use of middleware mechanism. The work is supported by Henan key science and technology foundation under grant No.0222020600.Commodity E-trading system is a real-time trading system, and it supports more than one item trading operation. It needs reliability, efficiency and security. To meet these needs, C/S/S three-pattern is adopted in this system. The three-pattern includes client, communication server and application server. Middleware technology is the key technology to construct three-system pattern. Real-time trade is a special application field, which comes down to many problems such as real time, security, dependability, and different platform, etc. Previous middleware technologies are unable to solve these problems fully at the same time. Considering the characteristics of E-trading system, based on network communication protocol, we design and implement the middleware that is suitable for commodity E-trading system.Middleware designed in this paper is based on TCP/IP protocol and message queue technology to realize communication reliability and efficiency between different platform, and corresponding application layer protocols are built to improve data processing efficiency. To ensure system's security, data encryption, identity authentication and digital signature technologies are adopted. As a graphical math-modeling tool, Petri net is used to describe systems formally, validate and evaluate systems, etc. In this paper, Petri net is used to describe and analyze the middleware. Finally, the performance of the middleware is tested by experimentation. The result indicates that the middleware can meet the need of reliability and efficiency in this system.