基于Comet的同步协同Web表单模型研究

在电子表单操作中，不但有大量协同信息的传递，而且有对同一表单的同步处理操作，而传统的的Web电子表单系统提供的是一种简单的异步交互方式，不适合高度互动的交互方式．为此，笔者提出一个在B／S模式环境下基于Comet的实时协同Web模型：CoModel．CoModel在传统Web电子表单系统的基础上，在表单服务器和Web服务器之间增加CoModel服务器，用于将表单转换成XML数据格式，来解决大量表单信息的交换和协同；为了解决传统Web电子表单的实时同步协同问题，在Web服务器上增加Comet传输功能，不仅解决了表单的实时数据传输问题，而且解决了浏览器的兼容性和插件问题．

A COMET BASED MODEL FOR REALIZING LNSTANT SYNCHRONIZATION AND COLLABORATION OF WEB FORMS

In the operation of electronic forms, there is not only a large number of collaborative information delivery, but also exists synchronization operations on the same form. However, traditional Web electronic forms system provides a simple asynchronous interaction, and is not suitable for highly interactive way to interact. To realize real- time synchronous collaborative form in B/S context, a Comet based model called CoModel is proposed. CoModel server is added on the basis of the traditional Web electronic forms system, in form between the server and the Web server to add CoModel server and transform forms into XML data format, as a result to solve a large number of forms of information exchange and collaboration. In order to solve the traditional Web electronic form real - time synchronous collaborative problem, Comet transmission function is increased in the Web server, and the forms real -time data transmission problems and the browser compatibility and plugin problem are solved.