Research On Distributed Application Systems Based On Middleware Of Mobile Agent

With the rapid developement of network technology, the enterprises have increasingly being faced with stong stike produced by the blasting of the information now. The information source of the enterprises distribute in the internet widely now, however, which must be done with, and all of the commercial activity of the enterprises must be based on timely, exact, general hunting publishiing these information. But, with a comprehensive view of the commercial systems of these enterprises which are based on the Internet, we can find that the information-share ing pattern can't satisfy the demands of commercial activity, which makes it a necessary requirement to build distributed enterprise application to construct an information environmentThe enterprise infromation environment based on the old distributed-transact technology has come across difficulty about the system's design, complexity, retractility, expansibility, agilityo Meanwhile, the distributed-transact technology has developed from Client/Server model based on RPC to REV, RMI, CORBA, Agent, Mobile Agent. Comparing with other distributed-transact technologies, the Mobile Agent computing-pattern has very clear dominance: reducing the load of network during distributed computing , improving communication efficiency , supporting break/link operation , supporting asynchronic self-determinated inter-operation , dynammic adapting to network environment, security and wrong-tolerencity Mobile Agent is the key factor of the distributed-transact technology following EJB, CORBA, which must be the main distributed-computing pattern.According to the basal demand and the background of enterprises' commercial activity , the developement of (Mobile)Agent etc. distributed-transact technology , this paper introduce a middleware model based on Mobile Agent technology, which combining with middleware technology, supporting information shareing between enterprises. Running on the Aglet platform developed by the IBM Tokyo Laboratory, a information querying system between enterprises design by the author is introduced last , in which the middleware model is realized and appied.