Design And Implementation Of A Criminal Investigation System Based On J2EE

In order to meet the needs of the public security system in Loudi to solve cases quickly,this paper elaborates on the development process of public security system at home and abroad,analyzes the gap between China's public security system and developed countries such as Europe and the United States,and fully considers the problems existing in the development of public security system in China.After analyzes the demand of the public security system in Loudi,a comprehensive management system of public security information based on J2 EE is designed and developed,and its application significance in criminal investigation is studied.The system mainly includes four modules: user management module,receiving and dealing with police data management module,investigating data management module,and case processing result data management module.It can realize the evidence of the items involved,evidence data,electronic records,electronic files,suspects,victims,witnesses information,units involved in the case and so on.Material management and query function.In the process of design and development,SHI-I It uses the Java language to write a three-tier architecture and combines it with the Oracle database to achieve data storage and management.The development and implementation of the system has greatly improved the efficiency of criminal investigation work of the public security system in Loudi City and realized the collection,transmission,sharing and analysis of criminal investigation data.At the same time,the system has high security,reliability,practicality and extensibility.