The Research Of Centralized Wide Area Agriculture Information Service System Based On Web Service

Entering for the 21st century, information technology has been developing rapidly,which also speeds up the advancement of agricultural informationization. The agriculture information service which is regarded as essential resource factor in the advancement of agricultural informationization has provided all kinds of service guarantee for the agricultural informationization. With advancement of our country informationization, our country's agriculture information service system has taken a basic shape, more than 7000 website related with the agriculture has appeared, for example, Chinese agriculture information network, Chinese agriculture science and technology information network,Chinese three agriculture networks and so on, But most of them appeared by the way of inquiry. For example, issuing information, publishing common science knowledge or leaving message. They waited for the expert's explanations and answers and lacked interaction between the expert and user's. In this way, farmers will meet problems and be difficult in obtaining expert's help in time. Because of the characteristic of agricultural timing, it often creates large economic loss. Furthermore, at present there are also lots of the domestic agricultural software, but most of them are quite specialized and pure, which are mostly used in research and few of them are in deed scientific practicality and easy to grasp, so much as there are few software system that are applied to the farmers. Overseas,because of the different national condition similar research could not be seen so much.Facing to these questions, this paper proposed a tentative plan which is to research and develop an agriculture information service system .It is a centralized management which is not only easy to use and grasp, but also has a strong interaction. So the users can submit them through this system when they meet the problems and can obtain the solutions in time.Studying a central centralized Internet system could thoroughly solve the problem of promoting. Based on the network technology, it can allow lots of users to access this central system without installation of this software on each computer. This system involves every specialty, therefore it may be named as "the wide" system from point of view region and the specialized domain.This paper has in the round investigated and studied the present situation of agriculture information service system and the Web Service research; and has expatiated some basic questions related to the agriculture information service; analyzed and compared its many advantages and disadvantages of all kinds way of realization; Thoroughly studied the Web Service construction and the core technology. It has studied thoroughly the model of Web service based on the J2EE and the work mechanism as well as frame of Web Service based on the J2EE.This paper has in detail designed the frame of the centralized wide agriculture information service system, has established the system structure drawings, the system functional diagrams, the system service flow chart; it has emphatically researched four function modules: the intelligent retrieval, the question answering, the information value-add and Individualized service. This article uses frame of Web Service based on the J2EE and achieves this system partial function, including: issuing the order form in the module of individuality service, order form response, as well as inquiry service of UDDI private registration center, issuing service, updating service, deletion services operation.