基于Hadoop的高校教学资源共享系统研究与实现

发布时间：2019-02-21 15:07

【摘要】：近期,教育部、财政部、国家发改委联合发布的《统筹推进世界一流大学和一流学科建设实施办法》,标志着“双一流”建设开始全面启动,在此号召下,各高校内部的教育事业正在得到飞速、蓬勃的发展。科学技术在高校教学中的应用瓶颈主要体现在教学资源的配置与共享方面,虽然教育水平取得了迅猛提升,但依然存在很多问题,经济发达地区与欠发达地区的高校教学资源分布不均的情况严重,欠发达地区高校教学资源相对落后,信息技术设备差、教师应用信息化的水平落后。并且教学资源丰富的高校,即使教学设施较为完善,依然存在着“信息孤岛”的问题,各高校间彼此封闭使用资源,致使资源被重复建设,资源的利用率被大幅度降低,从而制约了高校教育信息化发展的步伐。本文在此背景下,研发了一个开放、统一、适用范围广泛的高校教学资源共享系统,该系统以期解决现存的高校教学资源分布不均、资源重复性建设、资源利用率低等问题,进而缩短教学资源共享的周期,减少各学校对于教育设备的投入,促进教学资源的有效共享和整合,高校内教育水平的信息化、网络化也能够得到充分有序、健康的发展,所做工作如下:1.探讨了当前制约我国高校教育信息化发展的因素,分析开发教学资源共享系统的必要性。在构建系统的过程中,如何保证海量教学资源信息的存储更成为重中之重,利用Hadoop技术架构系统,不仅架构方便获取,并且能够将复杂的海量教学资源数据处理过程大大简化。2.分析了Hadoop体系对资源互联互通产生的优势,首先探究了Hadoop生态系统中两大重要组件——HDFS分布式文件系统和MapReduce编程模型的运行机制,然后具体阐述了Hadoop技术与高校教学资源共享系统的融合,在传统B/S模式的基础上,构建了一个开源的并行化计算与分布式架构,利用分布式文件系统HDFS来存储海量的教学资源,以及并行化编程模型MapReduce来提供并行计算检索的功能,系统框架是SSH集成框架,即由Struts、Spring和Hibernate组成的集合框架,三者相互结合,使系统结构稳定并可复用。3.依据系统的具体运作模式,设计出系统的功能模块及基本工作流程,给出教学资源共享系统的设计架构、概念结构,以清晰明确的E-R图展现,建立包含系统所需数据的数据库表,包括有用户信息表、管理员信息表、资源信息表和公告信息表。依据系统开发的普遍原则,设计并实现了含有角色登录、资源管理、资源检索、在线资源学习等功能的高校教学资源共享系统。
[Abstract]:Recently, the Ministry of Education, the Ministry of Finance and the National Development and Reform Commission jointly issued the "measures for the implementation of promoting the construction of world-class universities and first-class disciplines as a whole", which marks the start of the "double first-class" construction in an all-round way. Under this call, The cause of education in colleges and universities is getting rapid and vigorous development. The bottleneck of the application of science and technology in the teaching of colleges and universities is mainly reflected in the allocation and sharing of teaching resources. Although the level of education has made rapid progress, there are still many problems. The uneven distribution of teaching resources in colleges and universities in developed and underdeveloped regions is serious. The teaching resources of colleges and universities in underdeveloped areas are relatively backward, the information technology equipment is poor, and the level of teachers' application of information technology is backward. Even though the teaching facilities are relatively perfect, there still exists the problem of "information island" in colleges and universities with abundant teaching resources. The closed use of resources among colleges and universities results in repeated construction of resources, and the utilization rate of resources is greatly reduced. Therefore, it restricts the pace of the development of educational informatization in colleges and universities. Under this background, this paper develops an open, unified and widely applicable teaching resource sharing system in colleges and universities. The system aims to solve the problems of uneven distribution of teaching resources, repetitive construction of resources, low utilization rate of resources and so on. Thus shortening the cycle of teaching resources sharing, reducing the input of various schools to educational equipment, promoting the effective sharing and integration of teaching resources, the informationization of education level in colleges and universities, and networking can also be fully orderly and healthily developed. The work done is as follows: 1. This paper probes into the factors restricting the development of educational informatization in colleges and universities in China, and analyzes the necessity of developing a system of sharing teaching resources. In the process of constructing the system, how to ensure the storage of the massive teaching resources information becomes the most important. Using the Hadoop technology architecture system, not only the architecture is convenient to obtain, And can be complex massive teaching resources data processing process greatly simplified. 2. This paper analyzes the advantages of Hadoop system for resource interconnection. Firstly, it probes into the running mechanism of HDFS distributed file system and MapReduce programming model, which are two important components of Hadoop ecosystem. Then, the integration of Hadoop technology and teaching resource sharing system in colleges and universities is elaborated in detail. Based on the traditional B / S model, an open source parallel computing and distributed architecture is constructed. The distributed file system (HDFS) is used to store massive teaching resources, and the parallel programming model (MapReduce) is used to provide the function of parallel computing and retrieval. The system framework is an integrated framework of SSH, that is, a collection framework composed of Struts,Spring and Hibernate. Make the system structure stable and reusable. 3. According to the specific operation mode of the system, the function module and the basic workflow of the system are designed, and the design framework and conceptual structure of the teaching resource sharing system are given. The database table including user information table, administrator information table, resource information table and announcement information table are established. According to the general principles of system development, a teaching resource sharing system with the functions of role-login, resource management, resource retrieval and online resource learning is designed and implemented.
【学位授予单位】：山东师范大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP311.52

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