Based On The Key Technologies Of The J2ee Management Information System

The management information system for handicapped is constructed in the development environment of WebLogic Server together with JBuilder in this thesis. Five information-service modules are designed, and some necessary functions for the system are realized.A profound discussion is carried out on key technologies in the system development in this thesis. First, the thesis studys XML technology for solving the problem of how to share heterogeneous data sources. XML is considered as a tool of data description and transformation. A data integration middleware is constructed by using the tool. Heterogeneous database is integrated on the basis of the middleware and therefore a heterogeneous data query method based on XML is successfully realized. Second, with regard to the system's security, a special scheme ensuring user's security is presented and realized, which is on the basis of JAVA cryptography architecture, JAVA cryptography extension and encryption algorithm based on password. The scheme adopts Applet and Servlet technology, uses the improved encryption algorithm based on password and then provides multi-protection for user's password. In addition, the security policies of database and the method using session to protect against rewriting URL ensure the system's security.