基于Web的协同编辑中资源共享子系统的设计与实现

发布时间：2018-04-17 07:57

本文选题：协同编辑 + 资源共享　；参考：《北京邮电大学》2016年硕士论文

【摘要】：随着信息技术的发展,人们逐渐将文字编辑工作转移到计算机中,其至移动设备中进行。传统的电子编辑器虽然有着较为强大的编辑功能,但是缺少便捷的协同机制。使用软件前,用户需要手动进行下载安装和更新,编辑完成后还需要拷贝移动及合并等操作。本文提出了一种基于Web的协同编辑方式,用户只需要一台支持HTML5浏览器的设备即可接入。编辑的过程中,能够实时地与他人共享编辑操作,看到所有人的编辑结果。编辑结束后,文档自动保存在云端,更换设备也能继续编辑。本文研究内容是协同编辑中的资源共享子系统,资源是指围绕用户可编辑的文档为核心的一系列相关的软件对象。本文通过设计一个文档转换模块,将各种格式的文档转换为HTML和图片这两种可在Web中编辑的格式。然后分别为其设计了前端交互功能,称为在线编辑和电子白板。在协同机制的实现中,选取Node.js作为工具,利用WebSocket与客户端建立全双工的通信。用户的文档信息、光标状态和编辑操作等通过同步服务器实时地与他人共享,并且生成记录。为了实现多种资源的共享,本文设计了十多种消息类型和格式用于客户端之间发送和接收同步请求。此外,本文还使用OAuth2.0标准对系统进行鉴权,将用户的帐号信息作为同步会话的标识,提高了系统的安全性。本文将各个模块以Web服务的模式独立部署,调研并采用了一些较为新颖的跨域访问解决方案。最后,本文对系统进行了功能和性能上的测试,实验结果表明本资源共享子系统能够实现既定功能,完成实时地协同编辑。
[Abstract]:With the development of information technology, people gradually transfer the word editing work to the computer, which is carried on to the mobile device.Although the traditional electronic editor has more powerful editing function, it lacks convenient cooperative mechanism.Before using the software, users need to download, install and update manually, and copy, move and merge after editing.In this paper, a cooperative editing method based on Web is proposed. Users only need a device supporting HTML5 browser to access it.In the process of editing, we can share the editing operation with others in real time and see the editing results of everyone.After editing, the document is automatically saved in the cloud, the replacement device can also continue editing.The research content of this paper is the resource sharing subsystem in collaborative editing. Resource refers to a series of related software objects centered around user editable documents.In this paper, a document conversion module is designed to convert documents in various formats to HTML and pictures, which can be edited in Web.Then designed the front-end interactive function, called online editing and electronic whiteboard.In the implementation of cooperative mechanism, Node.js is chosen as a tool to establish full duplex communication between WebSocket and client.The user's document information, cursor status, and editing operations are shared with others in real time through the synchronization server, and records are generated.In order to share many kinds of resources, more than ten message types and formats are designed for sending and receiving synchronous requests between clients.In addition, the OAuth2.0 standard is used to authenticate the system, and the user's account information is used as the identification of the synchronous session, which improves the security of the system.In this paper, the modules are deployed independently as Web services, and some novel cross-domain access solutions are investigated and adopted.Finally, the function and performance of the system are tested. The experimental results show that the resource sharing subsystem can realize the established functions and complete real-time collaborative editing.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TP311.52;TP393.09

【参考文献】