公交查询系统是城市道路交通的重要组成部分,是城市发展的必然产物,是联系国民生活、社会生产和流通领域的关键环节。我国城市公交查询系统的发展处于一个较落后的水平,人们可以获得信息的方式很少,为了解决这种问题,设计出基于J2EE的公交查询系统。

本论文详细介绍了整个系统的已实现的功能。首先，实现多种查询功能，包括根据商厦名称、公交车号、日常站点、和任意两个站点查询乘车路线。其次，采用最短路径算法查找任意两个站点之间的最短乘车路线。最后，提供了用户留言的功能、用户管理功能和后台车次管理功能；用户留言功能，主要是收集用户的留言信息，可以根据用户提供的留言信息或是提出的建议，对系统进行修改和完善；用户管理功能，主要是删除用户信息和修改用户基本信息；后台车次管理功能主要包含添加车次和站点功能、更新车次和站点功能、删除车次和站点功能，这样做到系统实时更新，为用户查询提供更为准确的信息。

关键词：J2EE；最短路径算法；公交查询

Design and Realization of Public Transport Inquiry System Based on J2EE

Abstract

Urban public transportation is an important part in traffic and transportation domain, and it's also the inevitable result of social economy's development in urban areas. As an important part of urban transportation system, urban public transportation system is acting a key role in human living, in social production and in transportation domain .But the inquiry system of public transportation developments in our country is in a comparatively backward level. The general passengers have less way to obtain the information. In order to solve this kind of problem, an inquiry system of public transport based on J2EE is designed.

The thesis has introduced the realized functions of entire system in detail. Firstly, the system has realized many inquiry functions. The system can search bus route by the name of business mansion, the number of public transport, ordinary bus station and two arbitrary stations. Secondly, the system uses the shortest path algorithm to find the shortest travel routes between any two stations. Finally, the system provides the functions of consumer message, the bus number managing on the backstage and the consumer managing. The function of consumer message mainly collects suggestions from consumer to modify and perfect the system functions. The function of user managing is to delete user information mainly and revises the fundamental user information. The functions of bus number managing are mainly to add, update and delete the bus number and the station on the backstage. These can enable the system have the quality of real-time updating to provide the accurate information for user.

Key words：J2EE; Shortest path algorithm; public transport inquiry

目  录

论文总页数：30页

1 引言....................................................................... 1

1.1 选题背景............................................................... 1

1.2 项目的主要研究工作..................................................... 2

1.3 开发环境............................................................... 2

2 理论基础................................................................... 2

2.1 概念................................................................... 2

2.1.1 J2EE的概念........................................................ 2

2.1.2 JSP的概念......................................................... 3

2.1.3 Java Bean的概念................................................... 3

2.1.4 Java Servlet的概念................................................ 3

2.1.5 Session对象....................................................... 3

2.2 J2EE的结构............................................................. 3

2.3 J2EE的容器类型......................................................... 4

2.4 J2EE的体系与模式....................................................... 4

2.4.1 J2EE的体系(分布式计算)............................................ 4

2.4.2 J2EE的模式........................................................ 4

3 公交查询系统功能分析....................................................... 4

3.1 公交查询系统的需求..................................................... 4

3.1.1 系统需求描述....................................................... 4

3.1.2 系统数据流图....................................................... 5

3.2 公交查询系统的功能..................................................... 5

3.3 公交查询系统的数据库设计............................................... 6

3.3.1 E-R图............................................................. 6

3.3.2 数据库表设计....................................................... 7

4 公交查询系统的设计与实现................................................... 9

4.1 创建管理员登录的Servlet................................................. 9

4.2 创建用户登录的Servlet.................................................. 11

4.3 公交系统查询模块...................................................... 12

4.3.1商厦查询.......................................................... 12

4.3.2 车次信息查询...................................................... 15

4.3.3 站点信息查询...................................................... 17

4.3.4 两个站点间的信息查询.............................................. 18

4.4 公交系统添加模块...................................................... 23

4.4.1 添加车次.......................................................... 23

4.4.2 添加站点.......................................................... 24

4.5 公交系统删除模块...................................................... 24

4.5.1 删除车次.......................................................... 24

4.5.2 删除站点.......................................................... 25

4.6 公交系统更新模块...................................................... 25

4.7 公交系统留言板模块.................................................... 26

4.7.1 发表留言.......................................................... 26

4.7.2 查看留言.......................................................... 26

4.7.3 删除留言.......................................................... 27

5 系统测试与分析............................................................ 27

结    论.................................................................... 28

参考文献.................................................................... 28

致    谢.................................................................... 29

声    明.................................................................... 30