| Informationization is a revolution which opens a new era.Recently, fast development in Internet area makes electrical governmental affair becomes one of the most important things in social information application realm. It highly increases the governmental work with clarity, quantity, efficiency, and cooperates the government,enterprise and public people more harmony and tightly, which exceeds time, space and the partition of the department though applying the information technology and communication technology in the structure of the government and workflow. According to the U.N. research, there are 89% nations around the world developing their electrical governmental affairs on the different degrees and considering it as one of the most important affair.Leading by the Party central and State Department, the prevalence of electrical governmental affairs turn out in our country。It is of the first-class importance as how to learn from the advanced technique and experience from the experiences of foreign countries。The electrical governmental affairs system is not an air castle, or the park of mystery. There are some rules and principles in developing an electrical governmental affairs system. Based on one years experience in developing Jilin province governmental affairs hall system, the author makes some detailed discuss on how to design and implement an electrical governmental affairs system based on J2EE.J2EE is developed by Sun Microsystems, which is supported by many other big companies. We can use this technology to develop all levels service-central electrical governmental affairs system based on Web. Because the standard is institute by these big companies, so it absorbed many lectures and experience on system design and system integration. So now we consider J2EE as the best way on building electrical governmental affairs system.There are several advantages of the electrical governmental affairs system base on Java 2 Platform Enterprise Edition.Firstly, nearly all governmental affairs system need to work all time. Once it stops, the expense will be very enormous. The normal solution is to backup the data on several different computers. And we make them in real time synchronization. If one of them has problem, the request from client will be send to another one. Then the system can work normally. Because the J2EE based system has no especially limit on the hardware and OS, we can solve it easily. This feature is very important, because the electrical governmental affairs system is on behalf of the government.Secondly, some departments of government have built governmental affairs systems before. These systems accumulated a lot of useful data. But may be they are based on different technique. Fortunately, the Java language can span many platforms, so the electrical governmental affairs system based on J2EE could combine these former systems and data resources. This feature is very important to build a union electrical governmental affairs system.Thirdly, considering of the future extend of the governmental affairs system, J2EE constraints the developers to make operation logic in modules, which can be reusable. When we expand our governmental affairs system, or we add new J2EE products, reusing these modules can obvious reduce our expenditure.Fourthly, the original intention of "Model,View,Controller" design pattern is to improve the rate of software developing. The pattern based on modules would make developers devote their minds to implement operation logic, and the complex function would be responsible by the big software company.Fifthly, the information technology of our Nation is at somewhat lower level, but electrical governmental affair will concerns on the security and efficiency of our government functions. So we need consider the independent intellectual property right of the platform.In sum, the success of Jilin province governmental affairs hall system not only makes our province information application reach domestic leading level, and settles some technical pro...
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