With the acceleration of science and technology, public transport has become an important travel tool, so the public transport inquiry system is becoming more and more important. China's urban public transport enquiry system is in the early stage of its development. Therefore, people have less information available. In order to solve this problem, a public transportation query system based on J2EE is designed. This paper describes in detail the function of the system and can help the public to query information in various ways, which can demonstrate all available bus routes between any two bus stops and find the shortest route by using Dijkstra's algorithm. In addition, it provides message functions, user management functions and back-office vehicle management functions so as to provide users with more accurate query information.
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