第4章ACM在线测评系统的设计.doc

内蒙古科技大学 本科生毕业设计说明书（毕业论文） 题 目：内蒙古科技大学ACM/ICPC在线测评系统的开发 学生姓名：杨佳楠 学 号：0967111109 专 业：计算机科学与技术 班 级：计2009-1班 指导教师：郝斌 讲师基于J2EE的ACM/ICPC在线测评系统 摘 要 Online JudgeACM/ICPC国际大学生程序竞赛中。为了系统的开发，首先分析了北大、浙大等国内知名OJ的架构特点，取长补短，确定用户的需求和系统应该拥有的功能。 用户在这个平台上，只需注册自己的账号，在系统中找到自己想做的题目，然后编写自己的代码，确定无编译错误之后提交，本系统将对用户提交的代码进行编译，限制权限运行，得到用户程序的输出结果并和系统外部的测试数据文件进行对比，最终把测评结果（正确/错误）反馈给用户。 为了让系统在后期可以方便的修改和后续开发，本项目采用当前比较流行的MVC架构进行开发并确定使用Struts框架进行开发。后台评测模块为外部程序，由网络应用程序以独立进程方式调用。主要对用户提交的源代码经行编译，运行，与已有测试数据进行对照，把测评结果存放到程序用程序的返回值来表达。 网络应用程序只需获取外部进程的返回值即可得到测评结果。用到的后台编译器有GCC编译器、Free Pascal编译器、Sun Java虚拟机、GCJ编译器 关键词：；；； ACM/ICPC Online evaluation system based on J2EE Abstract Online Judge system, namely the Online Judge system, the main application program with ACM/ICPC international college students competition. For system development, first of all, analyses the architectural features of Peking University, zhejiang university and other domestic famous OJ, complement each other, determine the users requirements and should have the function of the system. Users on the platform, only need to register their own account, the topic of found in the system you want to do, and then write your own code, sure no compile errors after submitting, this system for users to submit code compile, limited permission to run, get the user program and the output of the results and system outside of the test data file comparison, finally the evaluation results feedback to the user (true/false). In order to make the system in the later can easily modify and subsequent development, this project USES the current relatively popular in the MVC architecture for development and for development using the Struts framework is determined. Background evaluation module for external application, invoked by way of web applications to separate process. , main source code submitted by the user via the line running, comparing with existing test data, the assessment result storage into the program with return values. Network applica